Borum P R, York C M, Broquist H P
Am J Clin Nutr. 1979 Nov;32(11):2272-6. doi: 10.1093/ajcn/32.11.2272.
Radioisotopic analyses for carnitine content were done on infant formula, formulas for tube feeding, food supplements, and chemically defined diets. The carnitine content of the diets depend on the protein source. Products whose main protein source is soy protein isolate, casein, or egg white solids contain 4 nmole carnitine per milliliter or less, with most of them containing undetectable amounts of carnitine. Products based on milk or beef contain 50 to 656 nmole carnitine per milliliter. The daily requirement of the body for carnitine is unknown. Evidence is discussed that indicates that the possible use of carnitine as a supplement to formula diets intended for long-term care needs to be considered.
对婴儿配方奶粉、管饲配方奶粉、食品补充剂和化学成分明确的饮食进行了肉碱含量的放射性同位素分析。这些饮食中的肉碱含量取决于蛋白质来源。主要蛋白质来源为大豆分离蛋白、酪蛋白或蛋清固体的产品，每毫升含4纳摩尔或更少的肉碱，其中大多数产品的肉碱含量检测不到。以牛奶或牛肉为基础的产品每毫升含50至656纳摩尔肉碱。人体对肉碱的每日需求量尚不清楚。文中讨论了相关证据，表明需要考虑将肉碱作为长期护理用配方饮食补充剂的可能性。
