在植物和动物蛋白质中托芬的真实消化能力
Sindhu Kashyap1, Sarita Devi2, Roshni M Pasanna2
1Centre for Doctoral Studies, Manipal Academy of Higher Education, Manipal, India; Division of Nutrition, St. John's Research Institute, St. John's National Academy of Health Sciences (A Unit of CBCI Society for Medical Education), Bengaluru, India.
The Journal of nutrition
|September 22, 2024
概括
这项研究使用双同位素追踪技术测量了各种植物和动物蛋白质中托的真实消化能力. 动物蛋白质的托芬消化能力明显高于植物蛋白质.
科学领域:
- 营养生物化学 营养生物化学
- 人类营养人类营养
- 蛋白质代谢 蛋白质代谢
背景情况:
- 蛋白质质量评估依赖于可消化不可或缺的氨基酸评分 (DIAAS),这需要以叶叶氨基酸消化的数据.
- 真正的叶酸盐 (Trp) 消化能力在人类中很少被测量,这限制了准确的DIAAS计算.
研究的目的:
- 量化人类内在标记的植物和动物蛋白质来源的真实Trp消化能力.
- 通过使用双同位素追踪器技术来确定这些蛋白质来源的DIAAS.
主要方法:
- 使用双同位素标记技术与2H内在标记的蛋白质.
- 与参考蛋白 (螺旋藻或晶体Trp) 相比,测量了真正的Trp消化能力.
- 通过将蛋白质特异性IAA分数与成人IAA要求进行比较来计算DIAAS.
主要成果:
- 真正的Trp消化率从67.6% (整个豆) 到95.9% (肉) 不同.
- 与动物蛋白质来源相比,植物蛋白质来源的Trp真正消化能力明显较低 (P < 0.05).
- 在任何测试的蛋白质来源中,托芬并未被确定为限制不可或缺的氨基酸.
结论:
- 该研究为各种植物和动物蛋白质提供了必要的真实Trp消化率数据.
- 这些发现有助于建立一个更准确的数据库来计算DIAAS和评估蛋白质质量.
- 与评估的植物蛋白相比,动物蛋白显示出优越的Trp消化能力.
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