• 한국축산식품학회지
• /
• 제18권4호
• /
• pp.301-306
• /
• 1998

Four low fat ground beef groups containing 10% fat plus 0, 5, 10 and 20% additional cooked lod rice and a control ground beef containing 30% fat were prepared and the analysis for microbiological and oxidative stability were conducted. During 6 days of storage at 4$^{\circ}C$ microbial analysis including total plate count and coliform groups were performed and 2-thiobarbituric acid reactive substance (TBARS) absorbances were measured. The growth rate of total aerobic bacteria and coliform groups tended to increase with the increase in fat content and the amount of added cooked lod rice. Development of oxidative rancidity were not significantly different between 10 and 30% fat ground beef but among the 10% ground beef the rancidity development significantly(p<05) decreased with the in-crease in the amount of added cooked old rice. Low fat ground beef groups were not stable over 3 days during storage at 4$^{\circ}C$.

• Food Science and Biotechnology
• /
• 제17권3호
• /
• pp.495-500
• /
• 2008

This study assessed the role of fatty acids on beef preference of 2 consumer groups from South Korea and Australia. Three muscles (longissimus dorsi, triceps brachii, and semimembranosus) were obtained from 36 carcasses (18 Hanwoo steers and 18 Angus steers) and the cooked beef samples were evaluated by 1,080 consumers (720 Korean consumer panels and 360 Australian consumer panels). The cluster analysis showed that the Korean consumers had more significant relationship with fatty acid composition of beef than that of the Australian consumers when evaluated Australian Angus beef Only C20:5(n-3), and C22:5(n-3) affected preference clustering for Australian consumers; while saturated (C16:0 and C 18:0) as well as unsaturated fatty acids [C16:1(n-7), C18:2(n-6), C18:3(n-3), C20:3(n-6), C20:4(n-6), C20:5(n-3), C22:4(n-6), C22:5(n-3)] affected preference clustering for Korean consumers (p<0.05). In the discriminant analysis of Korean consumer's preference clustering, C20:5(n-3) was a significant fatty acid for Australian Angus beef while the C20:4(n-6) and C 18:0 for Korean Hanwoo beef to evaluate the palatability (p<0.05). Therefore, fatty acid compositions impact Korean consumer's preference of beef.

• 한국축산식품학회지
• /
• 제37권3호
• /
• pp.464-468
• /
• 2017

The identification of pork in commercially processed meats is one of the most crucial issues in the food industry because of religious food ethics, medical purposes, and intentional adulteration to decrease production cost. This study therefore aimed to develop a method for the detection of pork adulteration in meat products using primers specific for pig mitochondrial DNA. Mitochondrial DNA sequences for pig, cattle, chicken, and sheep were obtained from GenBank and aligned. The 294-bp mitochondrial DNA D-loop region was selected as the pig target DNA sequence and appropriate primers were designed using the MUSCLE program. To evaluate primer sensitivity, pork-beef-chicken mixtures were prepared as follows: i) 0% pork-50% beef-50% chicken, ii) 1% pork-49.5% beef-49.5% chicken, iii) 2% pork-49% beef-49% chicken, iv) 5% pork-47.5% beef-47.5% chicken, v) 10% pork-45% beef-45% chicken, and vi) 100% pork-0% beef-0% chicken. In addition, a total of 35 commercially packaged products, including patties, nuggets, meatballs, and sausages containing processed chicken, beef, or a mixture of various meats, were purchased from commercial markets. The primers developed in our study were able to detect as little as 1% pork in the heat treated pork-beef-chicken mixtures. Of the 35 processed products, three samples were pork positive despite being labeled as beef or chicken only or as a beef-chicken mix. These results indicate that the developed primers could be used to detect pork adulteration in various processed meat products for application in safeguarding religious food ethics, detecting allergens, and preventing food adulteration.

• 한국축산식품학회지
• /
• 제42권6호
• /
• pp.953-967
• /
• 2022

The objective of this study was to determine effects of aging methods (wet-aged, dry-aged, and packaged dry-aged) during 60 d on quality traits and microbial characteristics of beef. Wet-aged beef was packed by vacuum packaging and stored in a 4℃ refrigerator. Dry-aged beef was used without packaging. Packaged dry-aged beef was packaged in commercial bags. Dry-aged and packaged dry-aged samples were stored in a meat ager at 2℃-4℃ with 85%-90% relative humidity. Meat color, crust thickness, aging loss, cooking loss, Warner-Bratzler shear force (WBSF), texture profile analysis, Torrymeter, meat pH, water activity, volatile basic nitrogen (VBN), thiobarbituric acid reactant substances (TBARS), and microbial analysis were measured or performed every 15 d until 60 d of aging time. Meat color changed significantly with increasing aging time. Differences in meat color among aging methods were observed. Aging losses of dry-aged and packaged dry-aged samples were higher than those of wet-aged samples. Wet-aged beef showed higher cooking loss, but lower WBSF than dry-aged and packaged dry-aged beef. VBN and TBARS showed an increasing tendency with increasing aging time. Differences of VBN and TBARS among aging methods were found. Regarding microbial analysis, counts of yeasts and molds were different among aging methods at the initial aging time. Packaged dry-aged and dry-aged beef showed similar values or tendency. Significant changes occurred during aging in all aging methods. Packaged dry aging and dry aging could result in similar quality traits and microbial characteristics of beef.

• 한국식생활문화학회지
• /
• 제7권3호
• /
• pp.237-244
• /
• 1992

1943년 이전의 문헌을 통하여 우리나라 쇠고기 ${\ulcorner}$포(脯)${\lrcorner}$의 종류와 조리법, 조리법의 변천에 대하여 고찰하였다. 쇠고기포는 조리법의 빈도 면에서 42회(12.2%)로 1위이고, 연대적으로도 가장 오래된 조리법이다. 옛 문헌에 기록된 쇠고기포의 종류는 산포(散脯), 편포(片脯), 약포(藥脯), 장포(醬脯) 등이 있었다. 조리법과 모양에 따라 세분하면 9종류로 산포, 편포에는 다식모양, 네모진 모양, 대추모양의 작은 모양의 편포와 참기(塹機)모양, 반원주(半圓株)모양의 큰 덩어리 모양의 편포가 있고 약포에는 다져서 만든 약포와 얇게 저며서 만든 약포, 장포 등이 있다. 기록된 빈도면에서는 편포가 가장 많고 다음이 약포이며 산포, 장포의 순이다. 16세기 후반 처음에는 "고기 말리고 오래 두는 법"으로 기록되었으나 18C말부터는 포(脯)로 표현되어 일관성있게 19세기까지 포(脯)로 기록되어 있다. 17-18세기의 기록된 조리법이 거의 19세기까지 큰 변화 없이 같은 내용으로 이어지고는 있으나 더러는 만드는 과정에서 시간과 정성이 많이 드는 옛 것은 사라지고, 현대로 오면서 간편화되고 있다. 쇠고기포에 사용한 주재료는 모두 힘줄과 기름기를 없이한 쇠고기이고 부재료로 꿩을 19C중엽까지 4 문헌에서만 이용하였다. 양념은 19종이며 그 중 많이 이용된 것은 소금, 참기름, 후추, 간장의 순이고, 보통 육류에 사용하는 갖은 양념(간장, 후추, 참기름, 설탕, 깨소금, 파, 마늘)중에서 가장 적게 쓰인 것은 마늘이다. 고명은 3종이며 주로 잣가루를 이용하였고, 찍어 먹는 양념장은 진장과 초장이었다.

• 한국축산식품학회지
• /
• 제21권1호
• /
• pp.10-17
• /
• 2001

The effect of trisodium phosphate and chitosan on aerobic plate counts, generation time, pH, shear force, and sensory evaluations in Korean beef loins stored at 4 or 10$^{\circ}C$ was assessed. The beef loins were treated with 5∼7.5% (w/v) trisodium phosphate and 1% (w/v) chitosan at exposure times of 10 min. The generation time of aerobic microorganisms on the beef loins increased with higher trisodium phosphate levels during storage at 4$^{\circ}C$. During storage at 10$^{\circ}C$, treatments of 5% trisodium phosphate and 1% chitosan were the most effective for preventing the growth of aerobic spoilage microorganisms. Shear values of the beef loins treated with trisodium phosphate and chitosan or chitosan alone were lower than those of trisodium phosphate during storage at 4$^{\circ}C$. The results of sensory evaluation indicated that the beef loins treated with trisodium phosphate and chitosan were in the \"liked less to typical\" category for odor and appearance scores compated to the controls during storage at 4$^{\circ}C$.

• 한국응용과학기술학회지
• /
• 제24권2호
• /
• pp.190-195
• /
• 2007

The transesterifications of beef tallow and the mixture of beef tallow and rapeseed oil were conducted at $65^{\circ}C$ respectively using TMAH, NaOH and their mixed catalysts. The reactants were emulsified with 1vol% emulsifier and propylene glycol. The overall conversion of beef tallow was 95% at such optimum conditions as the 1:8 of molar ratio and 0.8 wt% TMAH. The overall conversion of mixed fat at the 1:8 of molar ratio and mixed catalyst of 70 wt% TMAH 30 wt% NaOH was close to 97% which appeared at 0.8 wt% TMAH in 80min. And the kinematic viscosity of biodiesel mixture using the mixed catalyst was $6.5mm^2/s$ at $40^{\circ}C$.

• 한국동물위생학회지
• /
• 제27권1호
• /
• pp.1-6
• /
• 2004

It was conducted to evaluate the microbiological quality on the surface of slaughtered beef and pork products in Seoul from January 2003 to December 2003. Two hundreds four beefs and 284 pork carcasses were surveyed on generic E coli, total bacterial count for microbiological quality, and Salmonella spp as food-borne pathogen. The prevalence of the excellent or good grade(10$^4$ CFU/$\textrm{cm}^2$ in SPC) of beef and pork carcasses were 99.7% and 97.9%, respectively. The frequency of beef carcasses with less than 10$^2$ CFU/$\textrm{cm}^2$ of E coli was 100%, while that of pork carcasses was 98.2%. Salmonella spp was not recovered from all of beef and pork carcasses.

• 한국식생활문화학회지
• /
• 제30권3호
• /
• pp.313-323
• /
• 2015

One of the main processes of tenderizing beef in Joseon Dynasty was chemical methods involving Apricot seeds, manchu cherry twig and leaves, bamboo skins, mulberry tree bark, mangsa (硭砂), salmiacum (磠砂), alcohol, fermented malt, and original honey. This study analyzed and compared the effect of broussonetia papyrifera, fermented malt, cherry trees, and mulberry tree bark from old cookbooks. Tenderizing beef with cherry trees was most effective in the experiment on shearing force, TPA, and electrophoresis of beef. According to sensory evaluation and electrophoresis test results, tenderized beef with mulberry tree bark was slightly more preferred over the method using cherry trees. However, in accordance with the above mentioned experiment, quantitative descriptive analysis showed that the most common tenderizing material was derived from morus alba powder.

• 한국식품조리과학회지
• /
• 제6권1호
• /
• pp.27-31
• /
• 1990

These experiments were carried out to compared with components of AGM and raw beef. The results obtained were summarized as follows: 1) In proximate compositions of raw beef and AGM, water, protein, and fat were 71.21% and 48.47%, 29.35% and 21.85%, 5.36% and 14.95%, respectively. 2) Total amounts of amino acids of AGM were higher than raw beef, and glutamic acid was the highest in both, but methionine was the lowest in AGM, and cystine, in raw beef. 3) In fatty acids composition, unsaturated fatty acids were 90.4%, and linoleic acid (57.63%), among them, was the highest in AGM. But in raw beef, saturated fatty acids were 35.2%, and oleic acid, among them, was the highest content.