Mate extract as feed additive for improvement of beef quality
Mate extract as feed additive for improvement of beef quality
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DOI：
10.1016/j.foodres.2017.05.033
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发表时间：
2017-09-01
影响因子：
8.1
通讯作者：
Cardoso, Daniel R.
中科院分区：
文献类型：
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作者：
de Zawadzki, Andressa;Arrivetti, Leandro O. R.;Cardoso, Daniel R.
Mate(Ilex pardiuariensis A.St.-Hil.)通常被认为是安全的(GRAS状态)，并含有高含量的生物碱、皂苷和酚酸。在肉鸡饲料中添加配偶提取物可提高鸡肉的氧化稳定性，但其对肉鸡肉质的影响尚未见报道。在饲养场日粮中添加0.5%、1.0%或1.5%(w/w)的玉米/大豆标准饲料，可提高鲜肉中肌苷、肌酸和肌氨酸的含量。随着饲料中配合物浓度的增加，肉中总共轭亚油酸的含量增加。EPR自旋捕捉法测定的肉浆中自由基形成的趋势随着饲料中配合物添加量的增加而降低，特别是在肉类储存后，这表明更高的氧化稳定性。在日粮中添加配偶不会影响动物的性能和屠体特征，但这些动物的肉更嫩，因此更容易被消费者接受。马尾草提取物是一种很有前途的牛饲料添加剂，可以改善牛肉的氧化稳定性、营养价值和感官品质。
Mate (Ilex paraguariensis A.St.-Hil.) is generally recognized as safe (GRAS status) and has a high content of alkaloids, saponins, and phenolic acids. Addition of mate extract to broilers feed has been shown to increase the oxidative stability of chicken meat, however, its effect on beef quality from animals supplemented with mate extract has not been investigated so far. Addition of extract of mate to a standard maize/soy feed at a level of 0.5, 1.0 or 1.5% w/w to the diet of feedlot for cattle resulted in increased levels of inosine monophosphate, creatine and camosine in the fresh meat. The content of total conjugated linoleic acid increased in the meat as mate extract concentration was increased in the feed. The tendency to radical formation in meat slurries as quantified by EPR spin-trapping decreased as increasing mate extract addition to feed, especially after storage of the meat, indicating higher oxidative stability. Mate supplementation in the diet did not affect animal performance and carcass characteristics, but meat from these animals was more tender and consequently more accepted by consumers. Mate extract is shown to be a promising additive to feedlot diets for cattle to improve the oxidative stability, nutritive value and sensory quality of beef.