U.S. patent application number 12/201441 was filed with the patent office on 2009-03-05 for method of preparing aseptic packaged cooked rice with black bean in aseptic packing system.
This patent application is currently assigned to CJ CHEILJEDANG CORPORATION. Invention is credited to Jun-bong Choi, Hyo-young Jeong, Chang-young Lee.
Application Number | 20090061058 12/201441 |
Document ID | / |
Family ID | 40372705 |
Filed Date | 2009-03-05 |
United States Patent
Application |
20090061058 |
Kind Code |
A1 |
Jeong; Hyo-young ; et
al. |
March 5, 2009 |
METHOD OF PREPARING ASEPTIC PACKAGED COOKED RICE WITH BLACK BEAN IN
ASEPTIC PACKING SYSTEM
Abstract
The present invention relates to a method of preparing aseptic
packaged cooked rice with black bean in an aseptic packing system
by washing, dipping and dewatering black rhynchosia nolubilis and
then mixing heat treated rhynchosia nolubilis, and in particular to
a method of preparing aseptic packaged cooked rice with black been
in an aseptic packing system capable of conserving the cooked rice
with black been with excellent taste and incense for a long time at
a normal temperature by improving conservative property. More
specifically, the present invention relates to a method of
preparing aseptic packaged cooked rice in an aseptic packing system
that can conserve the cooked rice for a long time exceeding at
least six months at a normal temperature and is excellent in safety
against microorganisms, the method comprising the steps of: sorting
uniform-sized black rhynchosia nolubilis through a size sorting
operation; washing the black rhynchosia nolubilis so as not to
allow their shells to be peeled off; dipping the washed rhynchosia
nolubilis into water of 5 to 25.degree. C. and dewatering them;
leaving the washed black beans at a cold store of 10.degree. C. or
less for one hour; putting the black rhynchosia nolubilis of 15 mm
or less in thickness into a packing material and sterilizing them
for about 20 to 50 minutes at a temperature of 110 to 130.degree.
C.; mixing the sterilized rhynchosia nolubilis with nonglutinous
rice at a ratio of 5 to 30% and automatically filling a
predetermined amount of the mixture of rhynchosia nolubilis and
nonglutinous rice into a heat-resistant plastic container;
repeatedly performing high temperature/high pressure sterilization
on the mixture of rhynchosia nolubilis and nonglutinous rice four
to ten times for 4 to 9 seconds at a temperature of 130 to
150.degree. C. in an sealed space; filling a predetermined amount
of water for cooked rice and cooking rice at certain conditions;
sealing and packing it in a aseptic space.
Inventors: |
Jeong; Hyo-young; (Seoul,
KR) ; Lee; Chang-young; (Seoul, KR) ; Choi;
Jun-bong; (Seoul, KR) |
Correspondence
Address: |
SWANSON & BRATSCHUN, L.L.C.
8210 SOUTHPARK TERRACE
LITTLETON
CO
80120
US
|
Assignee: |
CJ CHEILJEDANG CORPORATION
Seoul
KR
|
Family ID: |
40372705 |
Appl. No.: |
12/201441 |
Filed: |
August 29, 2008 |
Current U.S.
Class: |
426/392 |
Current CPC
Class: |
A23L 3/015 20130101;
A23L 11/00 20160801; A23B 9/02 20130101; Y02P 60/85 20151101; A23L
7/196 20160801; A23L 3/02 20130101 |
Class at
Publication: |
426/392 |
International
Class: |
B65B 55/14 20060101
B65B055/14 |
Foreign Application Data
Date |
Code |
Application Number |
Sep 5, 2007 |
KR |
10-2007-0089874 |
Claims
1. A method of preparing aseptic packaged cooked rice with black
bean capable of being conserved for a long time, comprising the
steps of: preprocessing the raw materials of bean by sorting black
rhynchosia nolubilis through a size sorting operation and dipping
and dewatering the sorted black rhynchosia nolubilis and then
small-sizely packing and heat-treating it; washing nonglutinous
rice as raw material rice and dipping it into water; uniformly
mixing the dipped raw material rice and the preprocessed bean and
filling them in a heat-resistant container; sterilizing the filled
container at a high temperature/high pressure and then, supplying a
separate water for cooked rice sterilized by UV and cooking rice
using steam; and packing the cooked rice with a lid film in a clean
room.
2. The method as set forth in claim 1, wherein the step of
preprocessing raw material of bean sets the black rhynchosia
nolubilis to 4.0 mm to 5.6 mm through a size sorting operation to
make its size uniform; dips the beans in purified water of 5 to
25.degree. C. for one hour to four hours and then dewaters them;
leaves the beans for one hour in a state of a cold storage; and
packs small-sizely the beans of 15 mm or less in thickness and
sterilizing the small-sized pack for 20 to 50 minutes at 110 to
130.degree. C. to control initial microorganism.
3. The method as set forth in claim 1, wherein the raw material
rice in the step of dipping the raw material rice is dipped in
purified water for one hour to two hours.
4. The method as set forth in claim 1, wherein the black rhynchosia
nolubilis is mixed with nonglutinous rice at a ratio of 5 to
30%.
5. The method as set forth in claim 1, wherein the sterilization in
the step of cooking rice is repeatedly performed four to ten times
for 4 to 9 seconds at a temperature of 130 to 150 .degree. C., and
cooking rice is performed with steam of 90 to 110.degree. C. for 30
to 40 minutes by supplying separate water for cooked rice.
6. The method as set forth in claim 1, wherein in the step of
dipping, black rice is added to the nonglutinous rice.
Description
RELATED APPLICATIONS
[0001] This application claims the benefit of KR 10-2007-0089874,
filed on Sep. 5, 2007, which is specifically incorporated herein by
reference in its entirety.
TECHNICAL FIELD
[0002] The present invention relates to a method of preparing
aseptic packaged cooked rice with black bean in an aseptic packing
system by washing, dipping and dewatering black rhynchosia
nolubilis and then mixing heat treated rhynchosia nolubilis, and in
particular to a method of preparing aseptic packaged cooked rice
with black been in an aseptic packing system capable of conserving
the cooked rice with black been with excellent flavor and incense
for a long time at a normal temperature by improving conservative
property.
[0003] More specifically, the present invention relates to a method
of preparing aseptic packaged cooked rice in an aseptic packing
system that can conserve the cooked rice for a long time exceeding
at least six months at a normal temperature and is excellent in
safety against microorganisms, the method comprising the steps of:
sorting uniform-sized black rhynchosia nolubilis through a size
sorting operation; washing the black rhynchosia nolubilis so as not
to allow their shells to be peeled off; dipping the washed
rhynchosia nolubilis into water of 5 to 25.degree. C. and
dewatering them; leaving the washed black beans at a cold store of
10.degree. C. or less for one hour; putting the black rhynchosia
nolubilis of 15 mm or less in thickness into a packing material and
sterilizing them for about 20 to 50 minutes at a temperature of 110
to 130.degree. C. mixing the sterilized rhynchosia nolubilis with
nonglutinous rice at a ratio of 5 to 30% and automatically filling
a predetermined amount of the mixture of rhynchosia nolubilis and
nonglutinous rice into a heat-resistant plastic container;
repeatedly performing high temperature/high pressure sterilization
on the mixture of rhynchosia nolubilis and nonglutinous rice four
to ten times for 4 to 9 seconds at a temperature of 130 to
150.degree. C. in an sealed space; filling a predetermined amount
of water for cooked rice and cooking rice at certain conditions;
sealing and packaging it in a aseptic space. Also, the present
invention allows the shell of bean to be less peeled off by using a
red bean, i.e., black rhynchosia nolubilis, rather than a soybean
as a black bean added in the packaged cooked rice. Furthermore, the
present invention includes a method of preparing a bean having soft
taste and spicy flavor, the method comprising the steps of: sorting
foreign materials and stones as well as using beans other than
beans of 4 mm or less and of 5.6 mm or more in size through a size
sorting operation so as to have uniform moisture content when
dipping; an when putting them into a packing material, thinly
spreading and heating the packing material to make the thickness of
bean 15 mm or less so that uniform bean stiffness and uniform
sterilization effect are given, thereby controlling the
microorganisms of bean.
BACKGROUND ART
[0004] Cooked rice with bean is the most popular boiled rice and
cereal of boiled rice and cereals that K4oreans eat.
[0005] Considering the science of nutrition, rice includes less
lysine that is essential amion acids and much more methionine that
is sulfur-containing amino acids, while bean includes much more
lysine and less methionine. Therefore, if rice is eaten with bean,
the nutrition effect of protein rises. Also, a bean has a lot of
vitamin B, which is relatively less in rice. Since early times
Koreans have eaten soybean paste fermenting beans as a rice side
dish and have popularly eaten cooked rice with bean. In particular,
a black bean contains anthocyanin pigments so that it has various
pharmacological effects.
[0006] It is not easy to apply a bean to aseptic packaged cooked
rice capable of being conserved for a long time. This is the reason
that since a bean has a shell and is hard, if the aseptic packaged
cooked rice is prepared by dipping a bean together with rice for
the same time without a separate process for the bean, the bean may
not be well cooked, and if the bean is not well cooked, it causes
beany flavor. Also, since a bean is larger than rice in size, if
the bean is put into rice and sterilized equally to the rice, it
may be in danger of non-sterilization. If the sterilization
temperature is risen up to be suitable for the bean, rice quality
is degraded. When rice is cooked with beans at home, the beans are
sufficiently soaked in the water and then are boiled with rice so
that the beans are softly cooked. However, in the preparing process
of the aseptic packaged cooked rice, owing to concern of
microorganism proliferation, decoloration, reduction of spicy taste
of beans, and excessive peeling off of shells, the dip time of the
bean cannot be lasted for a long time. For this reason, the sort of
beans is important, and it is difficult to implement the soft taste
of the bean without performing a pre-processing process on the
bean.
[0007] A black bean is largely sorted into a soybean [Selitae
(green inside thereof) and a black soybean (yellow inside thereof)]
and a redbean [phynchosia nulubilis (green inside thereof) and
black rhynchosia nolubilis (yellow inside thereof)]. Although the
Selitae is used as a bean commonly put into rice at home, its
shells are more easily peeled off as compared to those of the
redbean and its dip absorption rate is largely changed depending on
dip time and dip temperature so that it is difficult to control
moisture content. Also, the size of the Selitae is large to have a
large filled deviation. Therefore, it is difficult to use the
Selitae in producing commercial cooked rice. On the other hand, the
redbean is easy in production and is harder than the soybean so as
not to allow its shells to be easily peeled off. In the case of the
black rhynchosia nolubilis, it is more excellent than the Selitae
in various pharmacological effects.
[0008] As similar prior arts, there are Korean Patent Laid-Open
Publication No. 2004-0092833 relating to a method of cooked
nutrition rice in aseptic packing system and Korean Patent
Laid-Open Publication No. 2001-0079456 relating to a method for
manufacturing the aseptic packing nutrient cooked rice. The Korean
Patent Laid-Open Publication No. 2004-0092833 relates to a method
for manufacturing the packing cooked rice controlling
microorganisms on the raw materials, which are in danger of
microorganism proliferation, such as a ginseng, a jujube, a
chestnut, etc., through an organic acid treatment and a branching,
and more improving the effects of conservative property, in order
to manufacture cooked nutrition rice. The Korean Patent Laid-Open
Publication No. 2001-0079456 relating to a method for manufacturing
the aseptic packing nutrient cooked rice, relates to a method for
manufacturing the aseptic packing cooked rice comprising the steps
of performing a pre-processing process by dipping materials of
which grains are larger than those of rice, such as a chestnut, a
jujube, pine nuts, a gingko nut, a sliced ginseng, etc., at a
constant temperature for a predetermined time, and mixing them with
rice to perform a first sterilization thereon and then cooking rice
by putting the HTST sterilized seasoning liquid thereinto.
[0009] In order to prepare the aseptic cooked rice capable of being
conserved for a long time as in the prior arts, the pre-processing
method performing an organic acid treatment on the raw materials
which is in danger of microorganism proliferation or performing
sterilization thereon by dipping them at a high temperature for a
long time, may degrade the quality of the product, when the method
is applied to the bean put into the cooked rice with black bean as
shown in the present invention. These are the reasons: First, if
the black bean is dipped in the water for a long time, it has
disadvantages that its shells are easily peeled off and the spicy
taste compounds of the bean is eluted. Second, when an acid
treatment is performed, black of the black bean, that is
anthocyanin family, is decolored into red so that it is not good in
appearance.
[0010] Regarding a bean pre-processing process, a method for
manufacturing a bean in Korean Patent Laid-Open Publication No.
2000-0019145 relating to soybean for cooking with rice for
easy-to-cook and method thereof, relates to a bean processing
method capable of mixing it with rice without easily soaking the
bean in the water at home or performing a pre-processing process on
the bean. In this case, the invention uses Selitae and has no
separate size sorting operation of the beans. Also, the dip time is
very short and the bean is manufactured in an intermediate moisture
shape which is left in a package exceeding at least three hours for
water balance and is heated. However, this method is not suitable
for processing the bean used in commercial cooked rice. This is the
reason that although the stiffness and sterilization of the bean
should be uniform in order to make commercial cooked rice capable
of being conserved for a long time exceeding at least six months,
if the size of the bean is not constant, dip absorption rate is
changed and moisture content is also changed accordingly, so that
sterilization effect is also largely changed. Also, in the case of
Selitae, its shell is easily peeled off and its size is large so
that a filled deviation is large. Therefore, a new bean
pre-processing method is required.
DISCLOSURE OF THE INVENTION
[0011] It is an object of the present invention to provide a method
of preparing aseptic packaged cooked rice with black bean in an
aseptic packing system by mixing a bean made to be applied to
commercial cooked rice, that can conserve the cooked rice for a
long time exceeding at least six months at a normal temperature by
lowering the level of microorganisms of raw material, using a bean
having taste, incense, color and soft taste, and thereby, improving
conservative property, the method where the species of the bean is
prescribed as a redbean, i.e., black rhynchosia nolubilis, in order
to manufacture a bean applied to the commercial cooked rice,
comprising the steps of: sorting black rhynchosia nolubilis into 4
to 5.6 mm in size through a size sorting operation; washing,
dipping, and dewatering the black rhynchosia nolubilis; leaving the
washed black rhynchosia nolubilis at a cold store of 10.degree. C.
or less for one hour; and performing a heat treatment on the black
rhynchosia nolubilis.
[0012] In order to accomplish the above object, there is provided a
method of cooking rice that can satisfy the safety of product
during the process of cooking rice, the method comprising the steps
of: sorting uniform-sized black rhynchosia nolubilis through a size
sorting operation; washing the black rhynchosia nolubilis so as not
to allow their shells to be peeled off; dipping the washed
rhynchosia nolubilis into water of 5 to 25.degree. C. and
dewatering them; leaving the washed black beans at a cold store of
10.degree. C. or less for one hour; putting the black rhynchosia
nolubilis of 15 mm or less in thickness into a packing material and
sterilizing them for about 20 to 50 minutes at a temperature of 110
to 130.degree. C.; mixing the sterilized rhynchosia nolubilis with
dipped rice; performing high temperature/high pressure
sterilization on the mixed rhynchosia nolubilis and dipped rice in
an aseptic packaging process and providing a predetermined amount
of water for cooked rice, characterized in that it satisfies the
quality properties of the same texture, taste, incense, and color
as the existing home cooking method in a state where the final
process is completed.
BEST MODES FOR CARRYING OUT THE INVENTION
[0013] The present invention relates to a method of preparing
aseptic packaged cooked rice in an aseptic packing system that can
conserve the cooked rice for a long time exceeding at least six
months at a normal temperature and is excellent in safety against
microorganisms. The method comprises the steps of: sorting
uniform-sized black rhynchosia nolubilis through a size sorting
operation; washing the black rhynchosia nolubilis so as not to
allow their shells to be peeled off; dipping the washed rhynchosia
nolubilis into water of 5 to 25.degree. C. and dewatering them;
leaving the washed black beans at a cold store of 10.degree. C. or
less for one hour; putting the black rhynchosia nolubilis of 15 mm
or less in thickness into a packing material and sterilizing them
for about 20 to 50 minutes at a temperature of 110 to 130.degree.
C.; mixing the sterilized rhynchosia nolubilis with nonglutinous
rice at a ratio of 5 to 30% and automatically filling a
predetermined amount of the mixture of rhynchosia nolubilis and
nonglutinous rice into a heat-resistant plastic container;
repeatedly performing high temperature/high pressure sterilization
on the mixture of rhynchosia nolubilis and nonglutinous rice four
to ten times for 4 to 9 seconds at a temperature of 130 to
150.degree. C. in an sealed space; filling a predetermined amount
of water for cooked rice and cooking rice at certain conditions;
sealing and packaging it in a aseptic space.
[0014] More specifically, there is provided a method of preparing
aseptic packaged cooked rice with black bean comprising the steps
of: selectively sorting black rhynchosia nolubilis of 4.0 mm to 5.6
mm through a size sorting operation; preprocessing the raw
materials of bean by dipping and dewatering the sorted black
rhynchosia nolubilis and leaving them for one hour in a state of a
cold storage, and then small-sized packaging at a thickness of bean
with 15 mm or less and heat-treating them; washing nonglutinous
rice as raw material rice and dipping it into water; uniformly
mixing the dipped raw material rice and the preprocessed bean and
filling it in a heat-resistant container; sterilizing the filled
container at high temperature/high pressure; after the filled
container is sterilized at high temperature/high pressure,
supplying a separate water for cooked rice sterilized by UV and
cooking rice using steam; and packing it using a lid film in a
clean room.
[0015] The present invention sorts foreign materials in beans;
selectively sorts the beans of 4.0 mm to 5.6 mm through a size
sorting operation; dips the beans in water of 5 to 25.degree. C.
for one hour to four hours and allows the beans to be subjected to
a dewatering process; leaves the beans for one hour in a state of a
cold storage; and small-sized package the beans of 15 mm or less in
thickness and sterilizing it for about 20 to 50 minutes at 110 to
130.degree. C., and then stores it. If the bean is 4.0 mm or less,
since the bean is too small to be moisture infiltration under the
same dipping condition so that it remains in a hard state, the
beans are not sterilized despite the heat treatment so that final
products may be spoiled by means of microorganisms. If the bean is
5.6 mm or more, since the beans rapidly absorb moisture under the
same dipping condition, the shell of the bean is peeled off more
smoothly, and the bean is overriped in the heat treatment so that
it is impossible to maintain its shape. After the nonglutinous rice
as raw material rice is washed with purified water to remove starch
and other impurity stacked to the surface of a grain of rice, it is
dipped in the purified water for one hour to two hours and then
dewatered.
[0016] Preferably, the black rhynchosia nolubilis is mixed with
nonglutinous rice as raw material rice at a ratio of 5 to 30%. If
the ratio is too small, the bean is not uniformly mixed so that we
can not have the feeling of the cooked rice with bean and the color
of the cooked rice with beans is not good. If the ratio is too
large, the cooked rice with bean is dry and crumbling due to too
many beans.
[0017] The dewatered raw material rice is mixed with bean at a
certain ratio and a predetermined amount of the mixture of
dewatered raw material rice and bean is filled in the
heat-resistant plastic container. After the container filled with
the raw material is repeatedly sterilized at high temperature/high
pressure four to ten times for 4 to 9 seconds at a temperature of
130 to 150.degree. C., a predetermined amount of water for cooked
rice sterilized by UV is supplied and the cooking rice is performed
with steam of 90 to 110.degree. C. for 30 to 40 minutes.
[0018] When the cooking rice is completed, the cooked rice with
bean is sealed with a lid film in a clean room (up to class 100,
"cleanliness standard about clean room of National Aeronautics and
Space Administration, the number of particles of at least 0.5 .mu.m
within 1 ft.sup.3 is 100) and is steamed thoroughly and then is
subject to cooling and drying processes so that it is
commercialized.
[0019] The aseptic packaged cooked rice with black bean capable of
being conserved for a long time exceeding at least six months at a
normal temperature can be prepared.
[0020] Also, the present invention can improve flavor, nutrition,
and taste by adding black-rice to nonglutinous rice in the step of
dipping the raw material rice.
BRIEF DESCRIPTION OF THE DRAWINGS
[0021] FIG. 1 is a flow chart showing a process of preparing bean
used in the present invention;
[0022] FIG. 2 is a flow chart showing a process of preparing
aseptic packaged cooked rice with black bean according to the
present invention;
[0023] FIG. 3 is a graph showing the change in moisture content
according to dipping time;
[0024] FIGS. 4a to c are graph showing the change in L, a, and b
values according heat treatment time and dipping time; and
[0025] FIG. 5 is a graph showing the change in stiffness according
to heat treatment time and dipping time.
BEST MODE FOR CARRYING OUT THE INVENTION
[0026] Hereinafter, the present invention will be described in more
detail through Examples, experimental examples, and comparative
examples.
EXAMPLE 1
[0027] A microorganism level was verified in each step by dipping
black beans of 4.0 mm to 5.6 mm obtained through a size sorting
operation into water for one hour to four hours, small-sized
packing a predetermined amount of black beans, and heat-treating it
for 20 to 50 minutes at 121.degree. C.
EXAMPLE 2
[0028] After the moisture of beans in optimal conditions processed
according to the conditions of the Example 1 and dipped raw
material rice was removed, the beans and the dipped raw material
rice were mixed and were contained in a heat-resistant container,
and were then put into a high temperature/high pressure
sterilization apparatus. Thereafter, the high temperature/high
pressure sterilization apparatus is sealed and high pressure steam
was then injected into the high temperature/high pressure
sterilization apparatus to sterilize the mixture of the beans and
the dipped raw material rice for 8.5 seconds at a temperature of
140 to 143.degree. C. The high temperature steam sterilization
process was repeated seven times. After the high temperature steam
sterilization process was completed, rice was cooked for 35 minutes
by using the UV sterilized purified water as water for cooked rice
for every the sterilized container and constantly maintaining the
steam temperature of a rice cooking machine at 100.degree. C. After
the cooked rice was completed, it was sealed with a lid film in an
aseptic state and was leaved for about 12 minutes. Thereafter, the
cooked rice was cooked thoroughly and was cooled in water of
10.degree. C. for 15 minutes so that its preparation was completed.
The microorganism level of the prepared product was verified.
EXPERIMENTAL EXAMPLE 1
[0029] The processing conditions between the beans prepared by
means of the optima preprocessing method of beans used in Korean
Patent Laid-Open Publication No. 2000-0019145 of the prior art and
the beans prepared by means of the preprocessed beans according to
the Example 1 are compared (table 1). In order to confirm the
quality of processed bean, and the quality of cooked rice and the
safety of microorganisms when preparing the aseptic cooked rice, a
bacterial activity test was performed to confirm whether a
long-term distribution can be achieved. Also, the aseptic cooked
rice was mass-produced using production line for aseptic cooked
rice so that the problems in processes of two processed groups are
compared.
TABLE-US-00001 TABLE 1 Comparison processing conditions Prior art
Present invention Species of bean Soybean (selitae) Redbean (bean
rhynchosia nolubilis) Bean sorting process Sorting foreign material
Sorting foreign material Size sorting (4.0 mm~5.6 mm) Size of bean
after being 12.69 .times. 7.78 .times. 5.94 8.77 .times. 4.50
.times. 5.41 dipped (mm) (length .times. width .times. thickness)
Washing method Spraying washing Continuously washing three times
with being put into water Dipping 15 degree/30 minute 20 degree/120
minute temperature/dipping time Moisture content after 29~30%
40~45% being dipped Dewatering method Natural dewatering Natural
dewatering in a cold storage with being put into net shaped wagon
Packaging unit and method Vacuum package in 80 g Packaging bean
with unit thickness of 15 mm or less in 700 g unit Moisture balance
time At least 3 hours Not exist Heat treatment condition 121
degree/20 minute 121 degree/30 minute
EXPERIMENTAL EXAMPLE 2
[0030] In order to define the dipping time and the heat treatment
conditions of raw material, the moisture content (weight after
being dipped--weight before being dipped) with the passage of time
a dipping temperature of 20.degree. C. was measured and the color
and stiffness of bean are viewed, wherein the color of bean was
analyzed using Minolta Spectrophotometer CM-3500d and the stiffness
of bean was analyzed using Tensipresser and the optimal processing
conditions are determined through a sensory test.
[0031] Also, the microorganism level (the number of general
microorganisms, the number of heat resistant bacterial) of the raw
material processed according to the conditions of the Example 1 was
indicated in table 2.
[0032] Irrespective of the dipping time, when the heat treatment
was performed for 20 minutes at 121.degree. C., both of the general
bacteria and the heat resistant bacteria are not detected. This
shows that the microorganisms are effectively controlled through
the preprocessing process of bean.
TABLE-US-00002 TABLE 2 Heat treatment time Dipping time 0 min 20
min 30 min 40 min 2 hr Number of 1.2 .times. 10.sup.3 0 0 0 general
bacteria Heat resistant 2.0 .times. 10.sup.1 0 0 0 bacteria 3 hr
Number of 3.0 .times. 10.sup.3 0 0 0 general bacteria Heat
resistant 2.1 .times. 10.sup.1 0 0 0 bacteria 4 hr Number of 4.5
.times. 10.sup.3 0 0 0 general bacteria Heat resistant 3.0 .times.
10.sup.1 0 0 0 bacteria
EXPERIMENTAL EXAMPLE 3
[0033] The change in moisture content according to the dipping time
of raw material was shown in FIG. 3. It can be appreciated from
FIG. 3 that the moisture content was suddenly increased within two
hours and then smoothly increased.
EXPERIMENTAL EXAMPLE 4
[0034] In order to establish the optimal conditions of raw
material, the change in the quality of bean according to the
dipping time and the heat treatment conditions was reviewed through
a mechanical analysis and a sensory test. The change in the color
of bean and the results of measuring the stiffness of bean are
shown in FIGS. 4 and 5, respectively.
[0035] As the dipping time was long, the bean was decolored to show
that all of L (Lightness) value, a (Redness) value, and b
(Yellowness) value are increased. In particular, if the heating
time was long, it can be appreciated that the difference was
further increased.
[0036] Also, as the dipping time and the heating time are long, it
can be appreciated that the stiffness of bean was gradually lowered
and the difference was large in the dipping time of four hours.
EXPERIMENTAL EXAMPLE 5
[0037] The optimal conditions of bean prepared according to the
conditions of the Example 1 are derived through the sensory test.
The results are indicated in table 3. If the dipping time and the
heating time are long, the bean was soft, but the bean was heated
for a long time so that it was too soft to make taste bad and was
over cooked to generate soybean smell rather than spicy smell.
Consequently, when the bean was dipped for two hours and then
heat-treated for 30 minutes, the flavor of bean was the spiciest
and the bean having the external appearance of black color and soft
taste can be obtained.
TABLE-US-00003 TABLE 3 Heat treatment time Dipping time 20 min 30
min 40 min 2 hr Color Black Black Black Solid extent Strong Normal
Normal Spicy flaver exten Fishy taste Very spicy Weak soybean smell
3 hr Color Black Black Black Solid extent Normal Normal Weak
(Brittle) Spicy flaver exten Spicy Spicy Soybean smell 4 hr Color
Red Red Red Solid extent Weak Weak (Brittle) Weak (too brittle)
(Brittle) Spicy flaver exten Spicy Spicy Strong soybean smell
EXPERIMENTAL EXAMPLE 6
[0038] The results of bacterial activity experiment in aseptic
packaged cooked rice with black bean prepared according to the
method of the Example 2 by putting in the bean processed as each
condition according to the Experimental example 5 are indicated in
table 4. Reviewing the results, it was judged that each product was
stored and distributed for a long time since its bacterial activity
experiment was negative.
TABLE-US-00004 TABLE 4 Heat treatment time Dipping time 20 min 30
min 40 min 2 hr Negative Negative Negative 3 hr Negative Negative
Negative 4 hr Negative Negative Negative
COMPARATIVE EXAMPLE 1
[0039] The sensory test (five point scaling technique) was
conducted, involved 200 consumers, on the product prepared
according to the method of the Example 2 using the bean prepared
according to the optimal conditions derived from the Experimental
example 5 and the product prepared according to the Example 2 by
adding black rice in order to improve the external appearance and
flavor. The results are indicated in table 5. It was evaluated that
the black rice added product takes a high score in the external
appearance and flavor over the product that the black rice was not
added. The reason why the black rice added product takes favorable
evaluation was believed that the color of black rice was well
matched with the color of black bean and the inherent flavor of
black rice was added.
TABLE-US-00005 TABLE 5 Evaluation item Example 2 Comparative
example 1 General flavor preference 3.81 3.87 Tempting degree 3.87
3.93 Color preference 3.95 4.05 Savory preference 3.87 3.86
Preference of soft bean 3.88 3.82 General flavor of bean 3.58 3.48
Bean chewing feeling 3.61 3.54
[0040] The score of the sensory test use five point scaling.
[0041] In other words, it was evaluated that very good was 5, good
4, normal 3, bad 2, and very bad 1.
EXPERIMENTAL EXAMPLE 7
[0042] The bacterial activity experiment was conducted in order to
compare the quality of the cooked rice with bean prepared according
to Korean Patent Laid-Open Publication No. 2000-0019145 of the
prior art and the quality of the cooked rice with bean prepared
according to the conditions of the present invention and to check
the safety of microorganisms for the long-term distribution was
conducted (Table 6). Reviewing the results, in the aseptic cooked
rice with Selitae prepared according to the prior art, the
stiffness of bean was more slightly hard, the extent that the shell
of bean was peeled off was serious, and the external appearance of
the commercial cooked rice contained in a small container was bad
due to the size of bean. Also, the result of the bacterial activity
experiment in the cooked rice with bean prepared according to the
prior art was positive so that it was judged that it was impossible
to distribute it for a long time.
TABLE-US-00006 TABLE 6 Processing condition Prior art Present
invention Stiffness of bean Slightly hard Soft Peeled off extent of
shell of Many peeled off Little peeled off bean External appearance
of Bad in external Good cooked rice appearance due to too large
bean Result of bacterial activity Positive Negative experiment
EXPERIMENTAL EXAMPLE 8
[0043] The problems in mass-producing the aseptic cooked rice in an
actual production line for aseptic cooked rice using the bean
prepared according to the two conditions of the experimental
example 6 are analyzed (Table 7). Reviewing the results of mass
production, the deviation in the amount of bean used in the product
was larger as much as about twice than the case of using bean
according to the present invention due to the size of Selitae so
that the difference in the weight of product was large. Also, the
defect rate of a product was 0.88% due to a popping phenomenon
cause by the peeled off shell of bean so that the problems in mass
production are caused. Consequently, it can be confirmed that the
bean prepared according to the preprocessing conditions of the
prior art cannot be applied to the commercial cooked rice.
TABLE-US-00007 TABLE 7 Filled deviation Preprocessing (maximum-
Supplementary Defect rate in condition minimum) filling rate
sorting line Prior art 19.0 Gg 2.44% 0.88% Present invention 8.7 g
1.53% 0.00%
[0044] As above, it can be confirmed that the aseptic packaged
cooked rice according to a preparing method of the present
invention is good in flavor and incense as well as is excellent in
safety. Also, it can be confirmed that the species of bean and the
method of processing bean according to the present invention is
very suitable as the preprocessing process for preparing the
commercial cooked rice.
[0045] Those skilled in the art will appreciate that the
conceptions and specific Examples disclosed in the foregoing
description may be readily utilized as a basis for modifying or
designing other Examples for carrying out the same purposes of the
present invention. Those skilled in the art will also appreciate
that such equivalent Examples do not depart from the spirit and
scope of the invention as set forth in the appended claims.
INDUSTRIAL APPLICABILITY
[0046] A method of preparing aseptic packaged cooked rice with
black bean according to the present invention controls a
microorganism in a bean simultaneously with preparing the aseptic
packaged cooked rice with black bean by putting the bean securing
peculiar color and spicy taste into the cooked rice, through a
pre-processing process of the bean, making it possible to obtain
the aseptic packaged cooked rice that can conserve the cooked rice
for a long time exceeding at least six months at a normal
temperature and is excellent in safety against a microorganism,
keeping the same taste and incense as the cooked rice with black
bean cooked at home.
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