• Title, Summary, Keyword: Meat quality

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Effect of Dietary Supplementation of Yeast Culture on the Performance, Nutrient Digestibility and Physico-Chemical characteristics of the Pork in Growing-Finishing Pigs (효모배양물의 수준별 급여가 육성·비육돈의 생산성, 영양소 소화율, 돈육의 이화학적 특성 및 지방산 조성에 미치는 영향)

  • Park, J. H.;Lim, O. C.;Na, C. S.;Ryu, K. S.
    • Journal of Animal Science and Technology
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    • v.45 no.2
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    • pp.219-228
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    • 2003
  • Two experiments were conducted to investigate the influence of dietary supplementation of yeast culture on the nutrient digestibility, performance and meat quality in growing-finishing pigs. Corn-soy basal diets contained 20, 18, and 16% CP and 3,265kcal/kg ME at different growth stages. One hundred and twenty pigs(8wk-old) were allocated into four supplementation levels of yest culture (0, 0.1, 0.2, 0.4%) in Expt 1. Weight gain, feed intake and feed efficiency were periodically recorded for 112 days. A metabolic feeding trial was conducted to measure the nutrient digestibility. Physical and chemical characteristics of the Longissimus Dorsi muscle(LM) from the pigs were measured at the end of experiment (Expt 2). In Expt 1, weight gain and feed efficiency were not different among the dietary treatment groups during the overall period. The digestibilities of protein and fiber were greater in 0.1% and 0.2% yeast culture-supplemented groups than in control (P<0.05). However, fat and ash digestibilities were not improved by the dietary treatment. In Expt 2, the LM protein content in 0.1% yeast culture-supplemented group, but not in 0.2% or 0.4%-supplemented group, was greater than that in the control group (P<0.05). The LM pH, purge loss, cooking loss and color were not affected by the dietary treatment. The LM shearing force was less in 0.2% yeast culture-supplemented group than in the control group (P<0.05). Other LM physicochemical properties did not differ between the dietary treatment groups. Total saturated and unsaturated fatty acids percentages and total cholesterol content of the LM did not differ across the dietary treatment groups.

Studies of Sausages in Korea -Comparison of Nutritive Components of Korean Commercial Sausages and Foreign Sausages- (한국산(韓國産) SAUSAGE에 관(關)한 연구(硏究) (시판(市販) SAUSAGE의 영양성분(營養成分)과 외국(外國) SAUSAGE와의 비교(比較)))

  • Woo, Soon-Ja;Lee, Hye-June
    • Korean Journal of Food Science and Technology
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    • v.10 no.2
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    • pp.173-180
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    • 1978
  • The sensory test and analysis of the proximate composition and hydroxyproline content of 4 kinds of Korean commercial sausage products (Beef, Hamburger, Frank, Hotdog) were carried out and the results were compared one another. The qualities of these sausage products were compared one another. The qualities of these sausage products were compared on the basis of the nutritive value of foreign sausages and according to the Korea Food Law. The results obtained were as follows. 1. The general conclusion drawn from the results of the proximate analysis was that the average composition of commercial sausages was adequate in view of the limits set by the Food Law. 2. The evaluation factors of sausages based on moisture-to-protein and protein-to-fat ratios were proposed tocompare the qualities of Korean commercial sausages with those of foreign commercial sausages. 3. Content of collagen as connective tissues in total protein of Korean commercial sausages were $2.1{\sim}15%$. The results of the present study appeared to suggest that meat contents of Korean commercial sausages used in this study were less than those of foreign sausages. 4. Among the 4 different kinds of sausages studied the qualities of Frank sausages were the best whereas those of Hotdog sausages were of the lowest quality. Beef sausages appeared better than Hamburger sausages from the view point of nutritive components.

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Development of Samgyetang Broth from Air-dried and Oven-roasted Chicken Feet (열풍건조 및 오븐구이 닭발로부터 추출한 삼계탕 육수 제조)

  • Kim, Juntae;Utama, Dicky Tri;Jeong, Hae Seong;Heidar, Barido Farouq;Jang, Aera;Pak, Jae In;Kim, Yeong Jong;Lee, Sung Ki
    • Korean Journal of Poultry Science
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    • v.46 no.3
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    • pp.137-154
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    • 2019
  • This study was conducted to develop and compare Samgyetang broth from extract of pre-treated chicken feet. Chicken feet were subjected to non-heating (control), heating at $70^{\circ}C$ for 12 h in a hot air dryer, and heating at $180^{\circ}C$ for 1 h in an oven. The heat-treated chicken feet were extracted at $121^{\circ}C$ for 1 h and 2 h, respectively. The extract was placed in a pouch with whole chicken carcass ($470{\pm}10g$). The sealed Samgyetang retort was made according to the industrial method. The pH of the extract from preheated chicken feet was lower than that extracted from fresh chicken feet. The Thiobarbituric Acid Reactive Substances (TBARS) value of the preheated chicken feet extract was significantly lower (P<0.05) than that of fresh chicken feet extract, but there were no significant differences among the broths. As the extraction time increased, the pH and TBARS value decreased in the extract (P<0.05) but increased in the broth (P<0.05). According to the sensory evaluation test, the extract from 1 h hot air heating and drying was significantly better in appearance, aroma, and overall preference than the other treatments (P<0.05). The GC-MS results showed that benzaldehyde and benzothiazole, which are widely known to give meat and nuts flavor, were detected in those treatments (P<0.05). The Samgyetang broths prepared from 1 h hot air heating and drying extract were significantly higher in the overall acceptability according to the sensory test (P<0.05). In summary, the quality of retort Samgyetang broth can be improved by adding chicken feet extract which is subjected to heating and drying for 1 h.

Effect of Dry Aging Condition on Yield, Microbial Growth and Storage Stability of Bottom Round Muscle from Hanwoo Beef (건조숙성 조건이 한우 설도육의 건조수율, 미생물 성장 및 저장성에 미치는 영향)

  • Cho, Soohyun;Kang, Sun Moon;Ahn, Dalrae;Kim, Yunseok;Lee, Eunmi;Van Ba, Hoa;Kim, Youngchun;Seong, Pilnam;Kim, Jinhyoung;Park, Beomyoung
    • ANNALS OF ANIMAL RESOURCE SCIENCES
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    • v.29 no.3
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    • pp.106-114
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    • 2018
  • The objective of this study was to investigate changes in drying yield, pH, water activity, microbial growth, and storage stability of bottom rounds of Hanwoo beef under four different dry-aging treatments (T1-T4) as temperature ($2{\sim}4^{\circ}C$), relative humidity (65~86%) and dry-aging period (20~90 d). The drying yield decreased by 83.13-97.05% as the drying period increased. Among the four treatments, there were no significant differences in drying yield after 60 d of dry-aging. The total plate aerobic counts (TPC) increased by 1.07-4.39 log colony-forming units (CFU)/g as the dry-aging period increased. Of the four treatments, T4 at 40, 60, and 90 d had significantly higher TPCs than those observed for the other treatments on the same days (p<0.05). As the period of dry-aging increased, pH values increased by 5.35-5.88 for knuckle and 5.34-5.62 for sirloin muscle, and water activity values decreased. For knuckle and sirloin muscle, the water activity values at 40 d and 60 d of T1 and T4 were significantly higher than those of the other treatments on the same days (p<0.05). The thiobarbituric reactive substances and volatile basic nitrogen values of the aged products increased as the dry-aging period increased. The results of this study showed that dry-aging conditions such as those in the T2 or T3 treatments (with a gradual increase in temperature and humidity) for less than 60 d would be best for yield, reduction of microbial growth and storage stability by dry the muscle surface quickly at the beginning period. Further research should include meat quality and economic analysis for these conditions that examines the benefits of these dry-aged products for the end processor.

Production Performance of 12 Korean Domestic Chicken Varieties Preserved as National Genetic Resources (국가 보존 유전자원 한국토종닭 12종의 생산능력 고찰)

  • Kim, Ki Gon;Choi, Eun Sik;Kwon, Jae Hyun;Jung, Hyun Chul;Sohn, Sea Hwan
    • Korean Journal of Poultry Science
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    • v.46 no.2
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    • pp.105-115
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    • 2019
  • In this study, viability, growth performance and egg production performance were investigated to determine the productive characteristics of 12 Korean domestic chicken varieties which have been collected and conserved for over 25 years in National Institute of Animal Science, Rural Development Administration, Korea. The 1,134 hens were tested and their production traits including survival rate, body weight, age at first egg laying, hen-day and hen-housed egg production, egg weight, and egg quality were measured. Survival rate was the highest in Korean Rhode-D and Korean Native Chicken (KNC) White and the lowest in Korean Cornish Brown (92.2% and 54.3%, respectively). Body weights from 4 to 50 wks were consistently high in the order of Korean Cornish, Korean Rhode, KNC, Korean Ogye, and Korean Leghorn breeds. There was no significant difference in weight between varieties within a breed. Age at first egg laying was the shortest in Korean Leghorn, while it was the longest in Korean Cornish. The hen-day egg production from $1^{st}$ egg to 57 wks was the highest in Korean Leghorn-K, and the lowest in Korean Cornish Brown. Egg weight was the heaviest in Korean Leghorn-F and the lightest in KNC White. The Haugh unit was the highest in Korean Rhode-C and the lowest in Korean Ogye. Taken together, these results suggest that it is desirable that the Korean Cornish variety is improved as the Korean meat breed because of its excellent growth ability, the Korean Leghorn variety is improved as the Korean layer breed because of its good laying performance, and the Korean Rhode and KNC varieties are improved as strong viable breeds because of their good survival rate.

Changes in Quality Characteristics of Venison Jerky Manufactured under Different Dry Time during Storage (건조시간을 달리하여 제조한 사슴고기 육포의 저장 중 품질 특성 변화)

  • Kim Il-Suk;Jin Sang-Keun;Park Ki-Hoon;Kim Dong-Hoon;Hah Kyung-Hee;Park Seok-Tae;Kwuak Kyung-Rak;Park Jung-Kwon;Kang Yang-Su
    • Food Science of Animal Resources
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    • v.26 no.2
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    • pp.166-174
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    • 2006
  • To determine the proper processing and storage conditions, physico-chemical, microbial and sensory properties of venison jerky under different dry times were measured during storage at $30^{\circ}C$ for 28 days. Samples were dried for 3 hr (T1), 4 hr (T2) and 5 hr (T3) at $75^{\circ}C$ in the smoke chamber, respectively. The pH of T1 was slightly lower than those of T2 and T3 as storage time increased. As dry and storage time increased, TBARS of T2 and T3 were significantly higher (p<0.05) than that of T1. In meat color, $L^*$ values of T3 showed slightly higher than those of T1 and T2, while at values were not clearly tendency by the passage of storage time. $b^*$ values of T2 and T3 were higher than that of T1. The water activity were significantly lower (p<0.05) in ,the order of T3$log_{10}$ CFU/g until 28 days and its number were accepted by sensory evaluation. In conclusions, T2 and T3 showed slightly high overall acceptability and lipid oxidative stability compared to T1 conditions. These results indicated that longer dry time ($4{\sim}5 hr$) of venison jerky would be better characteristics as compared to shorter dry time (3 hr) with increased storage time at $30^{\circ}C$.

Preparation and Keeping Quality of Canned Sea Mussel using Tomato Paste (토마토 페이스트 첨가 홍합통조림의 제조 및 저장중의 품질 안전성)

  • Noe, Yn-Ni;Kong, Cheung-Sik;Toon, Ho-Dong;Lee, Sang-Bae;Nam, Dong-Bae;Park, Tae-Ho;Kwon, Dae-Geun;Kim, Jeong-Gyun
    • Journal of Fisheries and Marine Sciences Education
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    • v.23 no.3
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    • pp.410-424
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    • 2011
  • This study was investigated for the purpose of obtaining basic data which can be applied to processing of canned sea mussel using tomato paste. Shell were washed, and then steamed and shucked. Sea mussel meat was prepared with ratio of sea mussel 90g, tomato paste sauce 65g(tomato paste 42%, gum guar 1.0%, salt 2.0%, starch syrup 2.0%, cooking wine 1%, water 52%). The sea mussel meats were packed with vacuum seamer in 301-3 can, and then sterilized for various F0 value(F0 8-12 min.) in a steam system retort at $118^{\circ}C$. The factors such as pH, VBN, amino-N, total amino acid, free amino acid, chemical composition, color value (L, a, b), texture profile, TBA value, mineral, sensory evaluation and viable bacterial count of the canned sea mussel produced with various sterilization condition(F0 8-12 min.) were measured. The same element was also measured during preservation. The results showed that the product sterilized at F0 8 min. and preserved for 90 days were the most desirable.

The Estimation of Environmental Effect and Genetic Parameters on Carcass Traits in Hanwoo (한우 도체형질의 환경효과 및 유전모수 추정)

  • Sun, Du-Won;Kim, Byeong-Woo;Moon, Won-Gon;Park, Jae-Chan;Park, Cheol-Hyeon;Koo, Yang-Mo;Jeoung, Yeoung-Ho;Lee, Jae-Youn;Jang, Hyun-Gi;Jeon, Jin-Tae;Lee, Jung-Gyu
    • Journal of agriculture & life science
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    • v.44 no.6
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    • pp.83-89
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    • 2010
  • The objective of this study was to investigate the effect of the environmental and genetic factors on the carcass traits of Korean cattle. We have used the data of 22,954 Korean cattle slaughtered from 2005 to 2009 in Gyeongnam region and estimated the genetic parameters of 36,868 cattle including the pedigree individuals by means of EM-REML analytical method. In summary, the heritability of the carcass weight, eye muscle area, backfat thickness and marbling score was 0.39, 0.30, 0.33 and 0.62, respectively. The carcass weight and the eye muscle area showed high correlation between them with the genetic correlation of 0.86 and the phenotypic correlation of 0.72. The high heritability of marbling score is assumed to be the result of focusing the breed improvement on the quality of the meat. Through this study, it is considered that the Korean cattle in Gyeongnam region are improving, which will thus contribute to the increase of the farmer's income. Additional study on the economic trait must be carried out to obtain clearer results that will lead to further improvement of Korean cattle.

Estimation of Food Commodity Intakes from the Korea National Health and Nutrition Examination Survey Databases: With Priority Given to Intake of Perilla Leaf (국민건강영양조사 자료를 이용한 식품 섭취량 산출 방법 개발: 들깻잎 섭취량을 중심으로)

  • Kim, Seung Won;Jung, Junho;Lee, Joong-Keun;Woo, Hee Dong;Im, Moo-Hyeog;Park, Young Sig;Ko, Sanghoon
    • Food Engineering Progress
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    • v.14 no.4
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    • pp.307-315
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    • 2010
  • The safety and security of food supply should be one of the primary responsibilities of any government. Estimation of nation's food commodity intakes is important to control the potential risks in food systems since food hazards are often associated with quality and safety of food commodities. The food intake databases provided by Korea National Health and Nutrition Examination Survey (KNHANES) are good resources to estimate the demographic data of intakes of various food commodities. A limitation of the KNHANES databases, however, is that the food intakes surveyed are not based on commodities but ingredients and their mixtures. In this study, reasonable calculation strategies were applied to convert the food intakes of the ingredients mixtures from the KNHANES into food commodity intakes. For example, Perilla leaf consumed with meat, raw fish, and etc. in Korean diets was used to estimate its Korean intakes and develop algorithms for demographic analysis. Koreans have consumed raw, blanched, steamed, and canned perilla leaf products. The average daily intakes of the perilla leaf were analyzed demographically, for examples, the intakes by gender, age, and etc. The average daily intakes of total perilla leaf were 2.03${\pm}$0.27 g in 1998, 2.11${\pm}$0.26 g in 2001, 2.29${\pm}$0.27 g in 2005, 2.75${\pm}$0.35 g in 2007, and 2.27${\pm}$0.20 g in 2008. Generally, people equal to or over 20 years of age have shown higher perilla leaf intakes than people below 20. This study would be contributed to the estimation of intakes of possible chemical contaminants such as residual pesticides and subsequent analysis for their potential risk.

Evaluation of Genetic Ability for Meat Quality in Hanwoo Cow (육질개량을 위한 한우번식우의 유전능력평가)

  • Won, Jung-Il;Kim, Jong-Bok;Lee, Jeong-Koo
    • Journal of Animal Science and Technology
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    • v.52 no.4
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    • pp.259-264
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    • 2010
  • This study was carried out to estimate genetic parameters and breeding values of Hanwoo cows for carcass traits. Carcass records were collected from Korean steers raised at the private farms located in rural area of Gangwon-do and slaughtered from December 2004 to June 2008 at the three slaughter houses near fattening farm. The results obtained in this study were summarized as follows; The means and standard deviations of the carcass traits were $5.57{\pm}2.01$ for marbling score (MS), $10.87{\pm}4.06mm$ for backfat thickness (BFT), $87.87{\pm}9.07cm^2$ for eye muscle area (EMA), $426.75{\pm}49.27kg$ for carcass weight (CW), and $65.80{\pm}3.80$ for yield index (YI). Heritability estimates using single trait analyses were 0.36 for MS, 0.35 for BFT, 0.24 for EMA, 0.29 for CW, and 0.40 for YI, respectively. Genetic correlation coefficients of MS with BFT, EMA, CW, and YI were -0.21, 0.30, -0.21 and 0.30, and those of BFT with EMA, CW and YI were -0.12, 0.57 and -0.97, and those of EMA with CW and YI were 0.32 and 0.27, respectively. And genetic correlation of CW with YI was -0.62. Single trait selection for MS might lead to reducing BFT, but might be an obstacle to increase CW due to negative genetic correlations of MS with BFT and CW.