AU4880899A - Process for preparation of concentrated extract of beef - Google Patents

Process for preparation of concentrated extract of beef Download PDF

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AU4880899A
AU4880899A AU48808/99A AU4880899A AU4880899A AU 4880899 A AU4880899 A AU 4880899A AU 48808/99 A AU48808/99 A AU 48808/99A AU 4880899 A AU4880899 A AU 4880899A AU 4880899 A AU4880899 A AU 4880899A
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beef
concentrated extract
carried out
concentrated
enzymatic hydrolysis
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AU752341B2 (en
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Jae-Hoon Kim
Ho Bong Lee
Hee Sop Nam
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Nongshim Co Ltd
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Nongshim Co Ltd
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    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23LFOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L23/00Soups; Sauces; Preparation or treatment thereof
    • A23L23/10Soup concentrates, e.g. powders or cakes
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23LFOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L13/00Meat products; Meat meal; Preparation or treatment thereof
    • A23L13/30Meat extracts
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23LFOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L13/00Meat products; Meat meal; Preparation or treatment thereof
    • A23L13/40Meat products; Meat meal; Preparation or treatment thereof containing additives
    • A23L13/48Addition of, or treatment with, enzymes
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23LFOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L27/00Spices; Flavouring agents or condiments; Artificial sweetening agents; Table salts; Dietetic salt substitutes; Preparation or treatment thereof
    • A23L27/20Synthetic spices, flavouring agents or condiments
    • A23L27/26Meat flavours
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23LFOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L5/00Preparation or treatment of foods or foodstuffs, in general; Food or foodstuffs obtained thereby; Materials therefor
    • A23L5/51Concentration
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23VINDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
    • A23V2002/00Food compositions, function of food ingredients or processes for food or foodstuffs
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23VINDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
    • A23V2250/00Food ingredients
    • A23V2250/54Proteins
    • A23V2250/55Peptide, protein hydrolysate
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23VINDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
    • A23V2300/00Processes
    • A23V2300/50Concentrating, enriching or enhancing in functional factors

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Nutrition Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Microbiology (AREA)
  • Meat, Egg Or Seafood Products (AREA)
  • Seasonings (AREA)

Description

AUSTRALIA
Patents Act COMPLETE SPECIFICATION
(ORIGINAL)
Class Int. Class Application Number: Lodged: Complete Specification Lodged: Accepted: Published: Priority Related Art: be..
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Name of Applicant: Nong Shim Co., Ltd.
Actual Inventor(s): Ho Bong Lee Hee Sop Nam Jae-hoon Kim Address for Service: PHILLIPS ORMONDE FITZPATRICK Patent and Trade Mark Attorneys 367 Collins Street Melbourne 3000 AUSTRALIA Invention Title: PROCESS FOR PREPARATION OF CONCENTRATED EXTRACT OF BEEF Our Ref 600575 POF Code: 102155/371938 The following statement is a full description of this invention, including the best method of performing it known to applicant(s): -1- PROCESS FOR PREPARATION OF CONCENTRATED EXTRACT OF BEEF Field of the Invention The present invention relates to a process for preparation of concentrated extract of beef by extracting beef with hot water and then treating the residue with two enzymes, whereby degree of hydrolysis and yield are improved so that beef flavor and productivity is increased, and viscosity of the concentrate is reduced so that fluidity is improved.
Background of the Invention Concentrated extract of beef is used not only as raw material of "Ramyun" noodle soup, but also as important material in the field of seasoning industry and diverse food industry such as processed animal product.
o**Concentrated extract of beef is classified into two groups, "concentration beef" and "boiled beef" according to the process for ooot preparation for long-term reservation of beef or production of can product. The former is prepared by boiling beef and then concentrating the obtained extract under reduced pressure. The latter is prepared by hydrolyzing beef and then concentrating it under reduced pressure. The concentrated extract of beef is generally prepared with trimmed beef, which is obtained from the residue after meat is taken from butchered cattle.
In case of the concentration beef, beef flavor is good, however, there are problems that the price is subject to sharp fluctuations, and because of darkness of aqueous solution due to excessive concentration, it is not suitable to be used for product where clear color is required.
Furthermore, due to high viscosity workability is poor. In case of the boiled beef, it tastes of home-cooked beef soup, however, contents of creatine, amino acid, peptide, nucleic acid and so on, which are related to characteristic taste of beef, is low. Further, it has somewhat offflavor, and working efficiency for processing is reduced because of solation during cold storage due to high viscosity. Also, processing time is prolonged due to excessive concentration to high density and inhibition of vaporization and diffusion of moisture during drying process.
The method of hydrolysis of protein includes acid hydrolysis method and enzymatic hydrolysis method. The former is a method which hydrolyzes protein with hydrochloric acid of high concentration for long time at high temperature, resulting in mainly free amino acid unit. In case of the method, yield is good, however, color of the final hydrolysate is darkened and large amount of salt is produced during process of neutralization so that salty taste is caused. When lipid is present, material harmful to human body such as MCPD, DCP is produced. Furthermore, in this method, all of the characteristics of raw material are lost. On the other hand, enzymatic hydrolysis method provides the final product with natural property of raw material itself compared with the acid hydrolysis method. Further, in case of the enzymatic hydrolysis method, there is no possibility of production of harmful material due to chemical side reaction so that security is obtained. However, in this method, yield is low, especially bitter taste is caused and property of hydrolysate is changed according to type of enzyme, order of reaction and purpose of use.
In the conventional process for preparation of concentrated extract of boiled beef, there are usually used the method that spices such as onion, soysause, garlic, etc., is added to beef or extract thereof to make seasoning, or the method that beef is thermally reacted with soysause and sulfur containing amino acid such as methionine, cystine, etc.
There are also known the method in which beef is processed with lipid S hydrolysis enzyme in supercritical condition(Japanese Laid-Open Patent Publication No. Sho 61-021098), the method in which beef is mixed with bone and the mixture is extracted(Japanese Laid-Open o Patent Publication No.Hei 06-030732) and the method in which extract of beef is mixed with oil and the mixture is heated to produce smell of roast(Japanese Laid-Open Patent Publication No. Sho 59-06315), etc.
The method using protein hydrolysis enzyme such as endoprotease or endoprotease and exoprotease is also used industrially.
After comprehensive investigation to solve the above problems, inventors of the present invention found out that depending on how to combine treating order, concentration degree, type and reaction condition of enzymes, it is possible to obtain process for preparation of concentrated extract of beef having increased yield, improved taste with property of beef itself, decreased bitter taste and decreased viscosity. The present invention has been completed on the basis of the above findings.
Summary of the Invention An object of the present invention is to provide a process for preparation of concentrated extract of beef, whereby increased yield, improved taste with characteristic taste of beef itself, decreased bitter taste and decreased viscosity are obtained.
According to the invention, there is provided a process for S. preparation of concentrated extract of beef, comprising the steps of: a) carrying out hot water extraction of beef using 0.1 wt wt saline solution; b) separating the liquid extract and the solid residue; c) carring out the first enzymatic hydrolysis of the solid residue obtained from the step b) with a neutral protease originated from Bacillus Licheniformis; d) carring out the second enzymatic hydrolysis of the resultant of the step c) with another neutral protease originated from Aspergillus Oryzae; e) separating hydrolyte from the resultant of the step f) mixing hydrolyte obtained from the step e) with the liquid extract obtained from the step b) and then concentrating the mixture.
Detailed description of the Invention The invention is described below in more detail.
In the present invention, 1 2 times of 0.1 wt 0.5 wt saline solution based on beef is added to beef, and hot water extraction thereof is carried out at the temperature of 85 90 for 1 hour.
Through the hbt water extraction, nitrogen compound and nucleic acid which are very important components for beef flavor are extracted.
As shown in table 1, when the extraction process is carried out with saline solution having the aforementioned concentration, the content of total nitrogen and nucleic acid(5-IMP+5-GMP) in the obtained product is improved.
eo a a a.
Sea .a a
S.
Table 1 The content of total nitrogen compound and nucleic GMP) depending on the concentration of saline.
Saline solution Total nitrogen(%) Nucleic acid 0 6.7 363.7 0.1 10.5 662.7 0.3 8.8 678.2 7.5 419.7 1.0 5.2 303.2 1.5 3.8 305.8 After the extraction process is completed, surface filtration, centrifuge or surface filtration and centrifuge is carried out. And then, oil in the upper layer is removed from the filtrate or the supernatant.
The aqueous layer is stored in storage tank as it is or after the first concentration.
To the insoluble residue obtained, 0.5 wt% 1.0 wt% endopetidase based on the quantity of protein of the residue, which cleave internal peptide bonds of peptide chain, is added as the first enzyme, and then reaction is carried out in pH 6.0 7.0 at 50 for 2 4 hours, preferably 2 3 hours. After the first enzymatic hydrolysis is completed, 0.1 wt% 5.0wt% exopetidase based on the quantity of protein of the residue, which cleave external peptide bonds of peptide chain, is added as the second enzyme, and then hydrolysis is 8 carried out in pH 6.0 7.0 at 50 52 for 3 6 hours, preferably 3 4 hours.
As the first enzyme, for example, a neutral protease originated from Bacillus Licheniformis, an alkaline protease originated from Bacillus Subtilis, a neutral protease originated from Bacillus Subtilis, etc. could be used. As the second enzyme, for example, a neutral protease originated from Aspergillus Oryzae, an acidic protease originated from Aspergillus Oryzae, an alkaline protease originated from animal, etc. could be used. It is most preferable, a neutral i protease originated from Bacillus Licheniformis as the first enzyme, and a neutral protease originated from Aspergillus Oryzae as the second enzyme. It is confirmed by the test result demonstrated in following table.
o**o ft f C C C C C C C C Table 2 Comparision of yield, "amino type nitrogen/total nitrogen" endoprotease and exoprotease.
and flavor according to type of Amino type EndoproteaseI ExOPTotease Prep aration Yield
I
nitrogen/total nitr ogen( Flavor property Flavor of Bitter Beef taste A. a neutral protease originated from Bacillus Licheniformis an alkaline protease originated from Bacillus subl£i/is a neutral protease originated from Aspergillus Oryzcie an acidic protease originated 27 18 +44+4+ from Aspergillus Oryzae an alkaline protease originated from Animal
I
i t 1i a neutral protease originated fromn Aspergillus Oryzae 1 an acidic prolease originated from Aspergillus Oryzae 4 f i +44 an alkaline protease 22 2 originated from Animal .0 .00 r 1 1 £0
'V
*1* a neutral protease originated from Bacillus Subtilis a neutral protease originated from Aspergillus Oryzae L 0
LV
i It an acidic protease originated from Aspergillus Oryzae 1 an alkaline protease originated from Animal +--:strong, medium, weak 1 J As shown in the table, when a neutral protease originated form Bacillus Licheniformis and a neutral protease originated form Aspergillus Oryzae are used as the first enzyme and the second enzyme, respectively, "amino type nitrogen/total nitrogen" ratio which effects on yield and quality of concentrated extract of beef shows the highest value, and bitter taste which is drawback of enzymatic hydrolysis is not caused.
Through such enzymatic hydrolysis, since insoluble protein in S- the residue obtained by hot water extraction is hydrolyzed to amino S acid or peptide of low molecular weight, yield is increased and beef originated flavor is enriched.
After the reaction is completed, inactivation treatment of the enzymes is carried out at 85 for 10 minutes. And then, centrifuge or surface filtration and centrifuge of the mixture is carried out and the oil in the upper layer is removed from the filtrate or the supernatant.
The obtained solution is mixed with the solution obtained at the hot S water extraction and stored in the storage tank. It is also possible to add saline to the mixture. The mixture is concentrated to 65 70Bx at 60 in the degree of vacuum of 20 40mmHg, resulting in concentrated extract of beef.
The concentrated extract of beef according to process of the invention has the improved taste, the characteristic taste of beef itself and decreased bitter taste, and improved fluidity owing to decrease of viscosity. Moreover, according to the invention, the problem of solubility due to solation during cold storage is resolved and 12 improvement of productivity owing to increase of preparation is achieved.
Detailed description of the preferred embodiments The following example is provided to illustrate the present invention and as such is not to be considered as limiting the scope of the invention.
9.
9 Brief description of the Drawings Figure 1 shows amino type nitrogen/total nitrogen ratio of concentrated extract of beef according to the first embodiment of the S present invention depending on reaction time.
Figure 2 shows amino type nitrogen/total nitrogen ratio of concentrated extract of beef according to the second embodiment of the present invention depending on reaction time.
Figure 3 shows the results of sensory evaluation of concentrated extracts of beef according to a conventional process and the first embodiment of the present invention.
Figure 4 shows the results of sensory evaluation of concentrated extracts of beef according to a conventional process and the second embodiment of the present invention.
Example 1 times of 0.3 wt saline solution based on beef was added to beef and hot water extraction was carried out for 1 hour at the temperature of 85 90 Carrying out the centrifuge, the supernatant was separated and then transferred to bath for oil separation. After removal of oil by settling method, the supernatant was stored in storage tank. The solid residue was transferred to stirred bath. To the residue, 1.0wt% endopetidase(Flavorzyme' Novo, Denmark) based on the quantity of protein of the residue was added, and then enzymatic hydrolysis was carried out in pH 6.5 at for 2 hours. After completion of the first enzymatic hydrolysis, S wt% exopetidase(Flavorzyme
TM
Novo, Denmark) based on the quantity of protein of the residue was added as the second enzyme, and then reaction was carried out in pH 6.5 at 55 for 3 hours. After completion of enzymatic hydrolysis, inactivation of the enzymes was carried out at 85 for 10 minutes with stirring. Then, centrifuge of S. the mixture was carried out, and the upper oil was removed from the supernatant. The aqueous layer solution obtained was mixed with the solution obtained at the hot water extraction of the beef and stored in the storage tank. The mixture was concentrated to 65Bx at 55 in the degree of vacuum of 30mmHg and concentrated extract of beef was obtained.
Example 2 Concentrated extract of beef was prepared using the same procedure described in the example 1, except that Promod 194PTM(Biocatalyst, England) was used instead of Flavorzyme
T
as the second enzyme.
Example 3 Concentrated extract of beef was prepared using the same procedure described in the example 1, except that 1.0 wt Flavorzyme TM based on the quantity of protein was added as the second enzyme, and the reaction was carried out for 4 hours.
Example 4 Concentrated extract of beef was prepared using the same procedure described in the example 1, except that Corolase 7089M(Rohm, Germany) was used as the first enzyme, 1.0 wt Promod 194P T M based on the quantity of protein was added as the second enzyme, and reaction was carried out for 4 hours.
Example 1.5 times of 0.1 wt saline solution based on beef was added to beef, and hot water extraction thereof was carried out at 85 for 1 hour. The reactant was filtrated by 120 mesh vibrating surface filter and the filtrate was centrifuged. The supernatant was separated and then transferred to bath for oil separation. After removal of oil by S" settling method, the supernatant was concentrated. The solid residue was transferred to stirred bath. To the residue, 1.0wt% a neutral protease originated from Bacillus Licheniformis (Protamax
T
Novo, Denmark) based on the quantity of protein of the residue was added, and then enzymatic hydrolysis was carried out in pH 6.5 at 55 for 2 hours. After completion of the first enzymatic hydrolysis, 5.0 wt% a neutral protease originated from Aspergillus Oryzae (Flavorzyme T M Novo, Denmark) based on the quantity of protein of the residue was added as the second enzyme, and then reaction was carried out in pH at 55 for 4 hours. After completion of enzyme reaction, inactivation of the enzymes was carried out at 85 for 10 minutes with stirring. Then, filtration and centrifuge were carried out using vibrating surface filter and centrifuger, respectively. The oil in the upper layer was removed from the separated solution. The aqueous layer obtained was mixed with the concentrated supernatant obtained at the hot water extraction. Saline solution was added to the mixture until the salt ratio of the final product reached to 12 wt%(in the concentrated extract of beef of 65Bx). The mixture was concentrated to 65Bx at 55 in the degree of vacuum of 30mmHg, and concentrated extract of beef was obtained.
Example 6 times of 0.3 wt saline solution based on beef was added to beef, and hot water extraction thereof was carried out at 90 for 1 hour. The reactant was filtrated by 120 mesh vibrating surface filter
C
and the filtrate was centrifuged. The supernatant was separated and then transferred to bath for oil separation. After removal of oil by settling method, the supernatant was concentrated. The solid residue was transferred to stirred bath. To the residue, 0.5wt% a neutral protease originated from Bacillus Licheniformis (Protamax
T
Novo, Denmark) based on the quantity of protein of the residue was added, and then enzymatic hydrolysis was carried out in pH 6.5 at 55 for 3 hours. After completion of the first enzymatic hydrolysis, 3.5 wt% a neutral protease originated from Aspergillus Oryzae (Promod 1 94P
M
Biocatalyst, England) based on the quantity of protein of the residue was added as the second enzyme, and then reaction was carried out in pH 6.5 at 55 for 5 hours. After completion of enzyme reaction, inactivation of the enzymes was carried out at 85 for 10 minutes with stirring. Then, filtration and centrifuge were carried out using vibrating surface filter and centrifuger, respectively. The oil in the upper layer was removed from the separated solution. The aqueous layer obtained was mixed with the concentrated supernatant obtained at the hot water extraction. Saline solution was added to the mixture until the salt ratio of the final product reached to 12 wt%(in the concentrated extract of beef of 65Bx). The mixture was concentrated to 65Bx at 55 in the degree of vacuum of 30mmHg, and concentrated extract of beef was obtained.
Example 7 1.5 times of 0.5 wt saline solution based on beef was added to beef, and hot water extraOction thereof was carried out at 88 for 1 hour. The reactant was filtrated by 120 mesh vibrating surface filter and the filtrate was centrifuged. The supernatant was separated and then transferred to bath for oil separation. After removal of oil by settling method, the supernatant was concentrated. The solid residue was transferred to stirred, bath. To the residue, 0.8wt% a neutral protease originated from Bacillus Licheniformis (Pescalase
R
GIST-
BROCADE, the Netherlands) based on the quantity of protein of the residue was added, and then enzymatic hydrolysis was carried out in pH 6.5 at 55 for 2 hours. After completion of the first enzymatic hydrolysis, 5.0 wt% a neutral protease originated from Aspergillus Oryzae (Flavorzyme
TM
Novo, Denmark) based on the quantity of protein of the residue was added as the second enzyme, and then reaction was carried out in pH 6.5 at 55 for 4 hours. After completion of enzyiie reaction, inactivation of the enzymes was carried out at 85 for 10 minutes with stirring. Then, filtration and centrifuge were carried out using vibrating surface filter and centrifuger, respectively. The oil in the upper layer was removed from the separated solution. The aqueous layer obtained was mixed with the concentrated supernatant obtained at the hot water extraction.
Saline solution was added to the mixture until the salt ratio of the final product reached to 12 wt%(in the concentrated extract of beef of The mixture was concentrated to 65Bx at 55 in the degree of vacuum of 30mmHg, and concentrated extract of beef was obtained.
Comparative example 1 Concentrated extract of beef was prepared by a known method.
To beef(trimmed beef), 1.5 times of water based on beef was added, and hot water extraction thereof was carried out at 90 for hours. 0.2 wt% endopetidase and 0.1 wt% exopetidase based on the solid residue obtained were added thereto, and enzymatic hydrolysis was carried out at 55 for 3 hours. After completion of the reaction, inactivation of the enzymes was carried out at 85 for 15 minutes.
Then, centrifuge was carried out and the upper oil was removed from the supernatant. The aqueous layer obtained was concentrated, and concentrated extract of beef was obtained.
Comparative example 2 18 Beef was washed with water and 1.5 times of water based on the beef was added thereto. Heating and extraction were carried out at 100 for 3 hours. The extract was separated using solid-liquid seperator(decanter)' and was centrifuged. The upper oil was removed from the supernatant. The aqueous layer obtained was concentrated to at 55 in the degree of vacuum of 30mmHg, resulting in concentration beef.
Experimental test 1. Determination of amino type nitrogen/total nitrogen Amino type nitrogen/total nitrogen in the concentrated extracts of beef according to examples 1 and 5 of the present invention and comparative examples 1 and 2 was determined. Ratio of amino type nitrogen and total nitrogen were automatically analyzed using automatic titrator(Automatic titrator, Radiometer, Denmark) and sample analyzer(Kjeltec Auto Sampler System Analyzer, Tecator, Sweden), respectively.
In case of the concentrated extract of beef according to the comparative examples, amino type nitrogen/total nitrogen ratio was about 20 Concentrated extract of beef according to the present invention was prepared using the procedure described in examples 1 or and amino type nitrogen/total nitrogen ratio thereof was measured using endopeptidase, at process time varing from 0 to 6 hours. Results obtained using endopeptidase of examples 1 and 5 are shown in Figure 1 and Figure 2, repectively. Ratio of amino type nitrogen/total nitrogen of concentrated extract of beef according to examples 1 and was 37%(Figure 1) and 35%(Figure 2) in 3 hours, respectively.
2. Comparison of creatine contents, amino type nitrogen/total nitrogen ratio, viscosity and yield.
For concentrated extract of beef according to examples 1 and and comparative examples 1 and 2, creatine contents, amino type nitrogen/total nitrogen ratio, viscosity and yield were measured and compared.
Creatine contents was measured by the method as described below.
*go 1) Removal of protein of high molecular weight from the sample: of 2/3N H 2 S0 4 and 10% NaWO 3 was added to 5g of sample and the mixture was stirred. Surface filatration was carried out using filter paper(Whatman paper No.4) and then the filtrate was messed up to 100ml with water.
2) Color reaction: of IN HCI was added to Iml of the sample obtained from the step The mixture was autoclaved at 121 for 10 minutes and neutralized with 10ml of IN NaOH. 20ml of 1% picric acid and of 10% NaOH were added thereto and then it was messed up to 100ml with water. Absorbance was measured at 520 nm.
3) Preparation of standard sample: 0.05%, 0.15%, 0.2% and 0.3% creatine solutions were prepared and color reaction thereof was carried out using the process of the above 2).
Viscosity of the samples were measured with Brookfield viscometer at the following conditions; p
C
a concentration of the each concentrated extract of beef: temparature: 40 spindle number: No. 2, revolution: 10. pm.
Yield was calculated using the formula: [weight of concentrated extract of beef, g/weight of beef, g]xl00.
Table 3 Comparison of concentrated extract of beef according to example 1 and comparative example 1.
Creatine(%) Viscosity(cp) Preparation yield(%) concentrated extract of beef 1.4 2092 22 according to comparative example 1 concentrated extract of beef 10.5 656 33 according to example 1 As shown in table 3, compared with the conventional concentrated extract of beef, concentrated extract of beef according to the present invention has content of creatine(taste component) of at least 7 times higher, viscosity(fluidity factor) of at least 3 times lower and yield increased by 50%. The productivity was improved.
Table 4 Comparison of concentrated extract of beef according to example and comparative example 1 and 2.
C.
C
C. *9 Amino type Viscosity(cp) Preparation nitrogen/total yield(%) nitrogen(%) concentrated extract-of beef 20 2092 22 according to comparative example 1 concentrated extract of beef 33 1800 8 according to comparative example 2 concentrated extract of beef 35 656 according to example As shown in table 4, compared with the conventional concentrated extract of beef, concentrated extract of beef according to the present invention has increased taste, viscosity(fluidity factor) of at least 3 times lower and yield increased by 50% or more, allowing improved productivity.
3. Sensory evaluation Smell, taste, bitter taste and beef flavor were evaluated with concentrated extract of beef according to the examples 1 and 5, and comparative examples 1 and 2. The evalution was carried out by professional panel using 7 score method.
As shown in figures 3 and 4, concentrated extract of beef according to the present invention was excellent with about 5% of significant difference.
Effect of the present invention According to the present invention, there is provided a process for preparation of concentrated extract of beef, whereby, in concentrated extract of beef, amino type nitrogen/total nitrogen ratio and concentration of creatine are increased so that taste is improved and viscosity is decreased so that diffusion of moisture is improved during evaporation and drying process, allowing shortening of time for preparation. Also, solation of the concentrated extract is inhibited so that fluidity and working efficiently is improved and yield is increased so that productivity is improved.
Throughout the description and claims of the specification the word "comprise" and variations of the word, such as "comprising" and "comprises", is not intended to exclude other additives, components, integers or steps.
a..
*a.
a.
C:WINWORDIANNAMNODELETEXSPECIESIB00575.DOC

Claims (4)

1. A process for preparation of concentrated extract of beef, comprising the steps of: a) carrying out hot water extraction of beef using 0.1 wt wt saline solution; b) separating the liquid extract and the solid residue; c) carring out the first enzymatic hydrolysis of the solid residue obtained from the step b) with a neutral protease originated from Bacillus Licheniformis; d) carring out the second enzymatic hydrolysis of the resultant of the step c) with another neutral protease originated from Aspergillus Oryzae; c* e) separating hydrolyte from the resultant of the step d); f) mixing hydrolyte obtained from the step e) with the liquid extract obtained from the step b) and then concentrating the mixture.
2. The process according to claim 1, wherein in the step wt% 1.0 wt% the neutral protease originated from Bacillus Licheniformis based on the quantity of protein of the residue is added as the first enzyme, and the enzymatic hydrolysis is carried out in pH 6.0 7.0 at 50 55 for 2 4 hours.
3. The process according to claim 1, wherein in the step wt% 5.0 wt% the neutral protease originated from Aspergillus Oryzae based on the quantity of protein of the residue is added as the second enzyme, and the enzymatic hydrolysis is carried out in pH
7.0 at 50 52 for 3 5 hours. 4. The process according to any one of claims 1 to 3, wherein the step the mixture is concentrated to 65 70Bx at 50 60 0 C in the degree of vacuum of 20 5. The process according to any one of claims 1 to 3, wherein in the steps b) and the separation process is carried out by surface filtration, centrifuge or surface filtration and centrifuge. 6. A concentrated extract of beef when prepared by a process according to any one of the preceding claims. 7. A process according to claim 1 substantially as hereinbefore described with reference to any of the drawings. 9 S. 00 0@S@ SO S 0S 0 0 0 0 S Seine S S 5* 0 @5 S. S S OOS@ SOS. S *555 S. S 5S S. DATED: 17 September 1999 PHILLIPS ORMONDE FITZPATRICK 20 Attorneys for: NONG SHIM CO., LTD. C:%INWORDANNAU4DELETESPECIES%005.DOC
AU48808/99A 1998-09-21 1999-09-20 Process for preparation of concentrated extract of beef Ceased AU752341B2 (en)

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KR100830886B1 (en) * 2006-07-25 2008-05-21 단국대학교 산학협력단 Method of making beef seasoning powder with strong beefy aroma and without bitter taste
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