• 한국축산식품학회지
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• 제37권2호
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• pp.153-161
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• 2017

Fatty acid profiles in relation to meat quality traits and sensory palatability of grain-fed and grass-fed beef from Hanwoo, American, and Australian crossbred cattle were examined in this study. There were significant (p<0.001) differences in fat content and fatty acid compositions between grain-fed and grass-fed beef. Grain-fed Hanwoo had significantly (p<0.001) lower saturated fatty acid (SFA) proportion but higher monounsaturated fatty acid (MUFA) proportion compared to grass-fed cattle. The proportion of oleic acid in grain-fed Hanwoo was significantly (p<0.001) higher than that in grass-fed Hanwoo, Australian crossbred, or American crossbred cattle. Grain-fed Hanwoo had significantly (p<0.001) lower percentages of drip loss and cooking loss compared to other cattle. Overall palatability panel scores of grain-fed cattle were significantly (p<0.001) higher than those of grass-fed cattle. Consequently, sensory overall palatability was negatively correlated with proportions of SFA and polyunsaturated fatty acid (PUFA), but positively correlated with the proportion of MUFA. In particular, the proportion of oleic acid was strongly and positively correlated with fat content (r=0.91, p<0.001) and overall palatability (r=0.92, p<0.001). These results implied that high-concentrate grain-fed could increase intramuscular fat (IMF) content and the proportion of oleic acid, thus increasing the sensory palatability of Hanwoo beef.

• Asian-Australasian Journal of Animal Sciences
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• 제4권1호
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• pp.25-29
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• 1991

Performance and production of twenty lactating Holstein cows fed diets containing either soybean meal or fish meal as the primary protein source were compared in a continuous or split feeding scheme. At 1 wk prepartum four groups of five animals were placed on each experimental diet. Animals assigned to the continuous feeding scheme were continued on these diets for 10-wk postpartum. At 4 wk postpartum, the diets for the groups assigned to switching protein sources were changed. These treatments were continued for another 6 wk. Milk production and dietary intakes were recorded daily. Milk constituents were measured every 2 d. Cows weights, rumen fluid samples and jugular blood samples were collected weekly. Data showed no effect of early lactation diet on cow performance or milk characteristics. Overall, compared to the soybean meal diet, the fish meal diet lowered the milk fat percent and increased production of milk per unit of dry matter ingested. No differences were observed for volatile fatty acid content of rumen fluid, blood mineral content, milk protein, somatic cell count, 4%-fat corrected milk, dry matter intake, or body weight.

• 한국포장학회지
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• 제25권2호
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• pp.47-50
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• 2019

식품과 포장재의 상호 작용 정도를 나타내는 분배 계수는 포장재의 구조 및 특성은 물론이고 내용물의 구조적 특성 그 중에서도 결정도 (crystallinity)에 의해서도 많이 좌우되고 있다. 온도의 상승에 따른 식품 성분의 결정도 상실은 내용물과 포장재의 상호 작용 증가를 초래하고 있다. 따라서, 최근 가공 식품 개발의 큰 부분을 차지하고 있는 즉석 식품의 경우 제조시 가열은 물론 소비자에 의해 한번 더 가열된다는 점에서 내용물과 포장재의 상호 작용에 의한 이취 발생 및 식품 안전성에 부정적인 요인이 될 수 있다는 점에서 이에 대한 체계적인 연구가 필요하다고 하겠다.

• 한국가금학회지
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• 제26권2호
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• pp.97-108
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• 1999

The consumer demands for quality of meats has become diverse in recent years. The present paper describes mainly the technology to improve the broiler meat quality with special reference to reducing fat contents in edible meats which is the heart of the quality constraints. Abdominal fat deposition in broilers was reduced by feeding of medium-chain triglycerides(MCT), suggesting MCT feeding is useful to produce broiler meat with low fat content. A phase feeding system to aim at improving meat quality that is mainly comprised with partial replacement of dietary protein into phase during 4∼6 weeks increased edible meat yields and reduced abdominal fat deposition and fat contents in breast and thigh meats. Whiteness of fat tissue was intensified by feeding beef tallow or lard in place of yellow grease. Feeding Phaffia yeast containing astaxanthin increased redness of breast and thigh meats and improved visual appearance of meats which may be preferential for consumers. Feeding fish oil reduced abdominal fat deposition and increased EPA and DHA contents of fat tissues. These procedures could be used for manipulation of meat quality to meet consumer demands.

• Asian-Australasian Journal of Animal Sciences
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• 제27권7호
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• pp.1019-1025
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• 2014

This study was conducted to observe the effects of crossbreeding and gender on the carcass traits and meat quality of Korean Native Black Pig (KNP) and $KNP{\times}Duroc$ crossbred ($KNP{\times}D$). A total of 50 pigs comprising seven KNP barrows, eight KNP gilts, twenty $KNP{\times}D$ barrows and fifteen $KNP{\times}D$ gilts were used in this study. Animals were reared in the same housing condition with same feed diet for six months prior to slaughter. After an overnight chilling, the carcasses were graded, and samples of Musculus longissimus dorsi were obtained for meat quality analysis. The slaughter and carcass weights and dressing percentage of $KNP{\times}D$ were higher (p<0.001) than those of KNP. The slaughter and carcass weights and backfat thickness of barrows were higher (p<0.01) than those of gilts. There were no significant difference in carcass conformation and quality grade between KNP and $KNP{\times}D$ as well as barrow and gilt. Fat content of $KNP{\times}D$ was higher (p<0.001) than that of KNP. Fat content of barrow was higher (p<0.001) than that of gilt. There was interaction between crossbreeding and gender on the fat content. KNP gilt showed higher fat content than KNP barrow whereas $KNP{\times}D$ barrow showed higher fat content than $KNP{\times}D$ gilt. Lightness, redness, yellowness, chroma and hue angle values and color preference of meat of $KNP{\times}D$ were lower (p<0.001) than those of KNP. Redness, yellowness and chroma values of meat of barrow were lower (p<0.05) than those of gilt. It is concluded that crossbreeding KNP with Duroc increases carcass productivity and meat fat but decreases meat color values and preference. Crossbreeding of KNP with Duroc produces a better fat deposition in meat of barrows than in gilts.

• 생명과학회지
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• 제22권7호
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• pp.928-935
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• 2012

본 연구는 동물성지방 대체물질로서 홍화씨(Carthamus tinctorius L.)의 첨가가 분쇄돈육의 이화학적 품질특성에 미치는 영향을 검토하였다. 분쇄돈육은 돈육등심 68%, 냉수 10%, 소금 2%에 돼지지방 20%(control), 돼지지방 10%와 홍화씨 10%(10% SS) 그리고 홍화씨 20%(20% SS)를 첨가하여 제조하였다. 생육 및 가열육의 수분, 단백질 및 회분함량은 20% SS가 가장 높았고, 지방함량은 대조군이 가장 높았다(p<0.05). 수율, 수분보유율, 지방보유율 및 보수력은 20% SS가 가장 높았으며, 직경감소율은 대조군이 가장 높았다. 외부 및 내부의 명도(L-value), 적색도(a-value) 및 황색도(b-value)는 대조군이 10% SS 및 20% SS보다 유의하게 높았다(p<0.05). 콜레스테롤 함량은 대조군, 10% SS 및 20% SS가 각각 50.85, 21.77 및 17.91 mg/100 g으로 20% SS가 가장 낮았다(p<0.05). Linoleic acid 함량은 대조군, 10% SS 및 20% SS가 각각 28.68%, 41.04% 및 54.26%이었다. 전체 불포화지방산 함량은 대조군, 10% SS 및 20% SS가 각각 50.53%, 55.76% 및 64.93%이었다. 지방산 조성에서 linoleic acid 및 전체 불포화지방산 함량은 20% SS가 가장 높았다(p<0.05). 아미노산 조성은 시료들 사이에 유의한 차이가 없었다.

• 한방재활의학과학회지
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• 제30권4호
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• pp.41-53
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• 2020

Objectives The purpose of this study was to investigate the effects of Silbi-san on the antioxidant and fat accumulation inhibition and to analyze the anti-obesity effect by analyzing the changes in serum lipid composition in obese mice. Methods We compared contents of phytochemicals like total polyphenols and total flavonoid and antioxidant activities such as 2,2-dipheny-1-picrylhydrazyl and 2.2'-azino-bis (3-ethylbenzothiazoline-6-sulphonic acid) radical scavenging activity. After Silbi-san in 3T3-L1 cells in vitro and mouse adipose tissue ex vivo, we quantified intracellular triglyceride accumulation and lipolysis. Moreover, the anti-obesity activity though inhibiting pancreatic lipase were analyzed. In 3T3-L1 cells, morphological changes showed that control cells had many lipid while cells treated with Silbi-san had less lipid accumulation. 30% EtOH Silbi-san treatment also suppressed the fat absorption by inhibiting the activity of pancreatic lipase and led to high lipolysis through promoting glycerol release. The experimental group was divided into four groups: Normal group fed normal feed, Control group fed 60% high fat diet (HFD) and distilled water, drug group fed 60% high fat diet and 200 mg/kg of Silbi-san water extract, drug group fed 60% HFD and 200 mg/kg of Silbi-san 30% ethanol extract. Results Serum total cholesterol content and serum low density lipoprotein-cholesterol content were significantly decreased in the Silbi-san extract group compared to the control group, serum high density lipoprotein-cholesterol content was significantly increased in Silbi-san extract group. Conclusions In this study, the antioxidant and fat accumulation inhibitory effects of Silbi-san were confirmed.

• 생명과학회지
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• 제22권1호
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• pp.31-35
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• 2012

비육 전(12개월령) 후(27개월령)기 한우 등심육을 대상으로 단백체 연구를 통하여 succinate dehydrogenase (SDH) 및 triosephosphate isomerase (TPI) 단백질의 발현 차이가 관찰되었다. 따라서 본 연구는 근내지방함량의 차이를 보이는 비육 전 후기 한우 등심육 내 차등발현을 보이는 SDH 및 TPI 유전자를 대상으로 근내지방함량과의 관련성 규명을 위하여, 비육 전 후기 및 한우 동기우 집단 50두를 대상으로 유전자 발현분석 및 통계분석을 수행하였다. 비육 전 후기 시료를 대상으로 유전자 발현분석을 수행한 결과 SDH 유전자는 12개월령에서 27개월령보다 4배 발현이 높은 것으로 확인되었으며, 한우 동기우 집단 50두 등심육을 대상으로 유전자 발현량과 근내지방함량과의 관련성을 분석한 결과에서도 근내지방함량과 고도의 통계적 유의성(p<0.001)이 있음을 확인하 다. 그러나 TPI의 경우 근내지방함량과의 관련성은 확인되지 않았다. 이러한 결과로 볼 때 SDH 유전자는 한우 등심육 내에서 근내지방함량과 관련된 유전자로 판단되며, 지속적으로 유전자구조 변이연구 등을 통한 유전자 마커로의 개발이 필요할 것으로 생각된다.

• Journal of Nutrition and Health
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• 제24권2호
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• pp.104-113
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• 1991

This research was to examine the correlation between body composition and life style including nutrients intake and physical activities of male and female athletes and nonathletes who are attending college. The percent of body fat with a skinfold caliper was measured higher in female than male. The body fat of the female students in the nonathletic group was the highest and male students in the nonathletic group showed the lowest in body fat. On the correlation between skinfold thickness and body composition the skinfold thick-ness showed negative correlation with the body density. However it showed positive correla-tion with the percent of body fat. According to this result it can be defined that skinfold thickness is in proportion to the body fat. dietary intakes of male and female athletes exceeded the need for their excessive physical activity. Concerning the correlation between calorie intake and body fat was high. From this we conclude that the more one consumes calorie intake the higher one's body fat content will be. On the correlation of physical activity and body composition the lean body mass showed high positive correlation with physical activity.

• 한국축산식품학회지
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• 제18권4호
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• pp.301-306
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• 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$^{\circ}C$.