Bergner H, Seidler W, Simon O, Schmandke H
Ann Nutr Metab. 1984;28(3):156-63. doi: 10.1159/000176798.
N digestibility and the dietary quality of a Vicia faba protein isolate as well as of two protein fractions from this isolate, acetylated and nonacetylated, were estimated in 15N-labelled adult rats. For reference, whole egg, casein and wheat were studied. The diets were fed at maintenance energy intake level. Daily metabolic fecal nitrogen estimated by an isotopic method was 5 mg/100 g body weight in animals receiving whole egg, casein, or Vicia faba proteins. When wheat was included in the diet metabolic fecal nitrogen was increased to 140% of this value. True N digestibility of reference proteins was 91-92% and of Vicia faba proteins 95-97%. Protein quality for maintenance was high and similar for all proteins. Acetylation affected neither N digestibility nor protein quality under maintenance conditions.
在15N标记的成年大鼠中评估了蚕豆分离蛋白以及该分离物的两种蛋白组分（乙酰化和非乙酰化）的氮消化率和膳食质量。作为参考，对全蛋、酪蛋白和小麦进行了研究。日粮按维持能量摄入水平投喂。通过同位素法估计，摄入全蛋、酪蛋白或蚕豆蛋白的动物每日代谢粪氮为5mg/100g体重。当日粮中包含小麦时，代谢粪氮增加到该值的140%。参考蛋白的真氮消化率为91-92%，蚕豆蛋白为95-97%。维持状态下的蛋白质质量很高，且所有蛋白质相似。在维持条件下，乙酰化既不影响氮消化率也不影响蛋白质质量。
