• 제목/요약/키워드: metmyoglobin

검색결과 58건 처리시간 0.031초

The effect of a finishing diet supplemented with γ-aminobutyric acids on carcass characteristics and meat quality of Hanwoo steers

  • Barido, Farouq Heidar;Lee, Chang Woo;Park, Yeon Soo;Kim, Do Yeong;Lee, Sung Ki
    • Animal Bioscience
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    • 제34권4호
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    • pp.621-632
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    • 2021
  • Objective: This study was conducted to investigate the effects of supplementation with rumen-protected γ-aminobutyric acid (GABA) on carcass characteristics and meat quality of Hanwoo steers. Methods: Eighteen Hanwoo steers with an average initial weight of 644.83±12.91 kg were randomly allocated into three different groups. Each group consisted of 6 animals that were treated with different diets formulated based on the animals' body weights. The control (C) group was fed a basal diet consisting of concentrate and rice straw with 74% total digestible nutrients (TDNs) and 12% crude protein (CP). The two other groups were treatment groups; one group was fed a basal diet (74% TDNs and 12% CP) supplemented with rumen-protected GABA at a dose of 150 mg/kg feed, and the other group was fed a basal diet (74% TDNs and 12% CP) supplemented with GABA at a dose of 300 mg/kg feed. Results: The GABA supplementation significantly contributed to better growth performance (p<0.05), especially the weight gain and average daily gain. It also contributed to the lower cooking loss (p<0.05), improvements in essential antioxidant enzymes and stable regulation of antioxidant activities in the longissimus lumborum of Hanwoo steers, as represented by the lower formation of malondialdehyde content within the meat, the inhibition of myoglobin oxidation indicated by the retention of the oxymyoglobin percentage, and the suppression of metmyoglobin percentage during cold storage (p<0.05). Conclusion: Higher doses of GABA may not significantly promote better animal performance and meat quality, suggesting that dietary supplementation with GABA at a dose of 100 ppm is sufficient to improve the meat quality of Hanwoo steers.

Quality attributes and shelf-life of freshly cut beef coated with waste feather keratin-ginger starch composite enriched with avocado peel polyphenolic-rich extract

  • Olarewaju M Oluba;Samuel I Ojeaburu;Opeyemi A Bayo-Olorunmeke;Georgina Erifeta;Sunday J Josiah
    • 한국식품저장유통학회지
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    • 제31권1호
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    • pp.1-14
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    • 2024
  • The utilization of coatings composed of bio-based materials in the processing and preservation of meat presents an environmentally conscious, secure, cost-effective, and superior method for prolonging the storage life of meat while also preserving its nutritional value. In this study, changes in physical, chemical, and microbiological characteristics of freshly cut beef coated with distilled water (control) and keratin-starch composites (K-S) functionalized with 0.0-, 0.2-, 0.6-, and 1.0-mL avocado peel polyphenolic-rich extract (APPPE) kept at 4℃ for 12 days were evaluated periodically at 3-day interval using standard techniques. Keratin was extracted from waste feathers, while starch was obtained from ginger rhizomes. Following a 12-day storage period, beef coated with APPPE-enriched K-S composites exhibited a significant (p<0.05) improvement in shelf life by minimizing deteriorative changes in pH and color (as determined by metmyoglobin level) in addition to inhibiting oxidative changes in lipids (as determined by TBARS level) and proteins (protein carbonyl level) in comparison to control and K-S composite without APPPE. Furthermore, microbial growth was significantly (p<0.05) suppressed in meat coated with K-S composite functionalized with APE at 0.6 and 1.0 mL compared to the control. The study suggested that APPPE-enriched K-S composite could offer an eco-friendly and safe food preservation technique for fresh meat.

Impact of Humectants on Physicochemical and Functional Properties of Jerky: A Meta-Analysis

  • Shine Htet Aung;Ki-Chang Nam
    • 한국축산식품학회지
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    • 제44권2호
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    • pp.464-482
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    • 2024
  • This study aimed to determine the effects of humectants on moisture content, water activity, tenderness, color, microbiological analysis, protein denaturation, and oxidation of jerky. A thorough search for papers published in scientific journals that examined the impacts of humectants on jerky was carried out using Web of Science, Google Scholar, PubMed, and Science Direct. Only 14 studies matched inclusion requirements. They were used in the meta-analysis to synthesise quantitative findings. In the current investigation, jerky produced with beef, poultry, goat, or pork was used. The standardised mean difference (SMD) between treatments with humectants and controls was examined to investigate the effects of humectants using random-effects models. Heterogeneity was investigated using meta-regression. A subgroup analysis was carried out for significant factors. Results revealed that the addition of humectants had no significant impact on water activity, pH, fat, ash, CIE L*, or CIE a* (p>0.05). However, humectant addition significantly increased moisture (SMD=1.28, p<0.05), CIE b* (SMD=1.67, p<0.05), and overall acceptability (SMD=1.73, p<0.05). It significantly decreased metmyoglobin (SMD=-0.96, p<0.05), shear force (SMD=-0.84, p<0.05), and protein (SMD=-1.61, p<0.05). However, it was difficult to get a firm conclusion about how humectants affected the myofibrillar fragmentation index, total plate count, and 2-thiobarbituric acid-reactive substances because there were fewer than ten studies. To sum up, the proper use of humectants in jerky demands careful attention to both type and quantity, needing a delicate balancing act with other contributing factors.

옻나무 추출물의 침지가 가스조절포장으로 저장한 한우고기 스테이크의 총환원력, 단백질산화 및 육색소산화에 미치는 영향 (Effect of Immersion in Rhus verniciflua Stokes Extract on the Total Reducing Ability, Protein Oxidation and Myoglobin Oxidation of Hanwoo Beef Steak Stored with Modified-atmosphere Packaging)

  • 강선문;송영한;정천순;조수현;박범영;정석근;이성기
    • 한국식품저장유통학회지
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    • 제19권3호
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    • pp.420-427
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    • 2012
  • 본 연구는 옻나무 추출물(Rhus verniciflua Stokes extract, RVSE)의 침지가 가스조절포장(modified-atmosphere packaging, MAP)으로 저장한 한우고기 스테이크의 총환원력, 단백질산화 및 육색소산화에 미치는 영향을 구명하고자 실시하였다. 시료(Hanwoo longissimus muscle)는 옻나무 추출물의 침지 여부에 따라 처리한 후 high oxygen-MAP(HOMAP; 75% $O_2$+20% $CO_2$+5% $N_2$)와 low oxygen-MAP (LOMAP; 0% $O_2$+20% $CO_2$+80% $N_2$)으로 포장하여 $4^{\circ}C$에서 9일 동안 저장하였다. 총환원력은 RVSE의 침지에 의해 증가되었으며(p<0.05), LOMAP에 의해 저장기간 동안 높게 유지되었다. Carbonyl 함량은 RVSE의 침지와 LOMAP에 의해 억제되었다. Metmyoglobin의 축적은 RVSE의 침지에 의해 증가되었으나, HOMAP에 의해 낮게 유지되었다. 이와 반대로 oxymyoglobin에 의한 적색 강도의 지표인 R630-R580은 RVSE의 침지에 의해 감소되었던 반면, HOMAP에 의해 높게 유지되었다. 명도($L^*$), 적색도($a^*$) 및 chroma($C^*$)는 RVSE의 침지에 의해 감소되었으나, HOMAP에 의해 높게 유지되었다. 반면에 hue-angle($H^{\circ}$)은 RVSE의 침지에 의해 증가되었으나, HOMAP에 의해 낮게 유지되었다. 따라서 RVSE의 침지는 한우고기 스테이크의 총환원력과 단백질산화 안정성을 증가시켰으나, 육색소산화 안정성 감소시켰다. 또한 HOMAP는 총환원력과 단백질산화 안정성을 감소시켰으나, 육색소산화 안정성은 증가시켰다.

Comparison of Meat Color and Nutritional Composition of m. longissimus lumborum from Domestic Fed Hanwoo, Holstein and Imported Angus Steers

  • Oh, Mi-Ra;Park, Beom-Young;Seong, Pil-Nam;Cho, Soohyun;Kang, Keun-Ho;Kim, Jin-Hyung;Jeong, Seok-Geun;Lee, Jun-Soo;Jeong, Dawoon
    • Journal of Animal Science and Technology
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    • 제54권6호
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    • pp.455-462
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    • 2012
  • This study was conducted to investigate the carcass characteristics and nutritional composition of longissimus lumborum (LL) muscle of domestic steer beef (Hanwoo and Holstein born and raised in Korea) and imported beef (Angus imported from Australia, raised for about 6 months in Korea). A total of twelve steers (4 steers per each breed and quality grade 2) were slaughtered, LL muscles were separated and stored at $4^{\circ}C$ for 7 days. The pH values of Holstein meat were notably higher than those of Hanwoo, and WHC values were similar between Hanwoo and Holstein, but Angus showed some differences. The WHC of the LL muscle from Hanwoo was better than those from Holstein and Angus when stored for fourteen days. The CIE $a^*$, $b^*$, and $h^0$ values of the LL muscle from Hanwoo were significantly higher than those of Angus at day 7 (p<0.05). Oxymyoglobin and metmyoglobin contents were not significantly different among three breeds at days 7 and 14. In the intra-muscular fat contents, the LL muscle of Hanwoo was significantly higher than Holstein, whereas the moisture and ash contents tended to be lower than the others. In mineral contents, P and Zn contents in the LL muscle of Holstein were higher than the other breeds, and K contents was higher in Hanwoo and Holstein meat than Angus.

냉장저장 중 돼지 저지방 부위 근육의 육색소, POV, TBARS, 유리지방산 함량 및 지방산 조성 변화 (Changes in Haem Pigments, Peroxide Value, TBARS, Free Fatty Acid Contents and Fatty Acid Composition of Muscles from Low Fat Pork Cuts during Chilled Storage)

  • 성필남;조수현;김진형;강근호;박범영;이종문;김동훈
    • 한국축산식품학회지
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    • 제30권3호
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    • pp.427-434
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    • 2010
  • 돼지고기 저지방 부위를 구성하고 있는 근육들 중 지방함량이 높은 5개 근육들의 냉장유통 중 품질변화를 예측하고자 냉장상태에서 14일 동안 저장하면서 근육별 이화학적 품질변화를 조사하였다. 육색소(oxy-myoglobin, metmyoglobin, total-myoglobin) 함량은 저장기간에 따른 차이가 없었다(p>0.05). 냉장저장 중 구이용으로 가능한 근육들의 저장성에서 POV 값은 모든 근육들에서 냉장저장 14일간 유의적인 변화가 없었지만(p>0.05), TBARS 값은 모든 근육들은 냉장저장 기간이 경과할수록 유의적으로 증가하였다(p<0.05). 유리지방산은 longissimus dorsi 근육이 냉장저장 기간이 경과함에 따라 유의적으로 높아졌다(p<0.05). 지방산 조성에서 냉장저장 14일까지는 모든 근육들에서 포화지방산, 불포화지방산, 단일불포화지방산, 다중불포화지방산에 유의적인 변화가 없었다(p>0.05).

셀레늄 급여가 쇠고기 육색 안정성에 미치는 영향 (Effect of Selenium Supplementation on Beef Color Stability)

  • 박범영;조수현;성필남;김진형;강근호;이성훈;김완영;이종문;김동훈
    • 한국축산식품학회지
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    • 제29권5호
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    • pp.627-632
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    • 2009
  • 유기태 셀레늄 급여가 쇠고기의 육색의 안정성에 미치는 영향을 구명하기 위하여 유기태 셀레늄(효모, 미국 Sel-Plex)군, 유기태 셀레늄 강화버섯을 생산하고 폐기되는 셀레늄이 다량 함유되어 있는 폐배지(Se-SMC : Se-spent mushroom compost)를 급여한 쇠고기와 급여하지 않은 쇠고기의 육색 안정성을 비교한 결과는 다음과 같다. 육색(Hunter $L^*$, $a^*$, $b^*$), chroma(채도, 색도), hue(색조, 색상) 및 총색차(${\Delta}E$)값을 측정한 결과 처리구간에 차이가 없는 것을 볼 때 최대 홍화시점으로 알려진 절개 후 30분이 경과한 육색측정 값으로는 유기태 셀레늄의 급여효과를 구명하기 어려웠다. 반면 냉장($4{\pm}1^{\circ}C$) 14일 및 21일 저장한 시료를 분쇄한 후, $20^{\circ}C$의 항온기에서 48시간 산화시킨 후 육색소의 화학적 조성을 비교한 결과, OxyMb은 저장 14일차 대조구 26.04, 유기태 셀레늄 효모급여구 28.52, 셀레늄 강화 버섯폐배지 급여구 33.78이었고, 21일차는 대조구 12.65, 유기태 셀레늄 급여구 18.98, 셀레늄 강화 버섯폐배지 급여구 18.72로 대조구에 비하여 유기태 셀레늄 효모급여구와 셀레늄 강화 버섯폐배지 급여구가 높은(p<0.05) 결과를 보였다. MetMb의 함량에 있어서는 대조구가 유기태 셀레늄 효모급여구와 셀레늄 강화 버섯폐배지 급여구에 비하여 높은(p<0.05) 결과를 보여 셀레늄 급여 쇠고기는 Mb의 산화 및 갈변화를 억제하고 선홍색의 육색을 유지하는데 효과적인 것으로 판단된다.

돈육 뒷다리부위와 닭가슴살을 활용하여 제조한 수리미의 특성에 미치는 pH 조절의 영향 (Effects of pH Adjustment on Characteristics of Surimi Using Pork Leg and Chicken Breast.)

  • 진상근;김일석;양한술;박구부;최영준;신택순;김병균
    • 생명과학회지
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    • 제17권5호
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    • pp.728-734
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    • 2007
  • 원료육(돈육 뒷다리 및 닭가슴살)에 따라 pH 조절법(3.0 또는 11.0)으로 제조한 수리미의 이화학적 및 관능적 특성을 비교 분석한 결과, 돈육 뒷다리를 활용한 pH 3.0으로 조절한 수리미는 높은 조단백질 함량, 수율, 보수력을 보였으나, 적색도, 황색도, Mb 및 metMb 함량이 높고(P<0.05) 백색도, 근원섬유단백질, 파괴강도, 변형값 및 겔강도가 낮아(P<0.05) 품질에 나쁜 영향을 미쳤다. 돈육 뒷다리를 활용한 pH 11.0으로 조절한 수리미는 높은 조직 특성과 낮은 Mb 및 metMb 함량으로 인해 양호한 결과를 얻었으나, 가열감량이 낮고 파괴강도, 변형값 및 겔강도가 낮게 나타났다(P<0.05). 또한 닭가슴살을 활용한 pH 3.0으로 조절한 수리미는 높은 조단백질 함량, 수율, pH, 파괴강도, 변형값, 겔강도 및 명도를 보여 양호한 결과를 얻었으나(P<0.05), 근원섬유단백질, 적색도 및 metMb 함량이 높고 수리미의 조직 특성이 낮아 품질에 나쁜 영향을 미쳤다(P<0.05). 닭가슴살을 활용한 pH 11.0으로 조절한 수리미는 근원섬유단백질, 변형 값, 명도, 백색도 및 응집성이 높고 Mb 함량, 가열감량, 조단백질 함량, 수율 및 파괴강도 값이 낮게 나타났다(P<0.05). 따라서 색 및 겔 특성을 기준으로 수리미의 품질 특성을 비교하면, 돈육 뒷다리에 비해 닭가슴살의 활용이 명도, 백색도, 파괴강도, 변형값 및 겔강도 값이 높게 나타났으며, pH 3.0에 비해 pH 11.0으로 회수한 수리미에서 높은 백색도, 근원섬유단백질 함량 및 응집성을 보였다. 그러나 모든 수리미 샘플의 관능평가 항목에서 유의적인 차이가 나타나지 않아, 돈육 뒷다리 및 닭가슴살을 활용한 pH 조절법으로 회수한 수리미의 제조가 가능할 것으로 판단된다..