State Key Laboratory of Animal Nutrition, Collage of Animal Science and Technology, China Agricultural University, Beijing, China.
Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China.
Anim Sci J. 2021 Jan-Dec;92(1):e13556. doi: 10.1111/asj.13556.
The effect of alfalfa saponins (AS) supplementation on the meat quality especially the color for growing lamb was investigated. Fifty Hu male lambs with body weights (BW, 19.21 ± 0.45 kg) were divided into five groups and supplemented AS with 0, 500, 1,000, 2,000, and 4,000 mg/kg of dietary dry matter intake. After 90 days, all lambs were slaughtered. The longissimus thoracis muscle in lamb displayed significant changes in the content of intramuscular fat, especially n-3 polyunsaturated fatty acids, and drip loss within AS treatment (p < .05) between control and treatments groups. Redness (a*) significantly improved in both 0-day and 7-day storage with the AS supplementation coupled with the percentage of met-myoglobin reduction (p < .05). The redness (a*) change may result from improved met-myoglobin reducing activity, antioxidant enzymes, lactate dehydrogenase, and succinate dehydrogenase (p < .05) by AS supplementation in muscle. These enzymes may help to protect mitochondria function and reduce met-myoglobin, which bring a bright and red meat color.
研究了苜蓿皂苷（AS）补充剂对生长羊肉质，特别是颜色的影响。将 50 只体重（BW，19.21±0.45kg）为 19.21±0.45kg 的雄性胡羊分为五组，分别用日粮干物质摄入量 0、500、1000、2000 和 4000mg/kg 的 AS 进行补充。90 天后，所有羔羊均被屠宰。在 AS 处理组（p<.05）内，与对照组相比，羔羊背最长肌中的肌肉内脂肪含量，特别是 n-3 多不饱和脂肪酸和滴水损失均发生了显著变化。随着 AS 补充剂的添加，红色度（a*）在 0 天和 7 天的贮藏期都有显著改善，同时伴随着高铁肌红蛋白还原率的提高（p<.05）。AS 补充剂可提高肌肉中高铁肌红蛋白还原活性、抗氧化酶、乳酸脱氢酶和琥珀酸脱氢酶（p<.05），这可能导致红色度（a*）的变化。这些酶有助于保护线粒体功能，减少高铁肌红蛋白，从而使肉质呈现出鲜艳的红色。
