| 单词 | biological value |
| 释义 | > as lemmasbiological value biological value n. [after German biologische Wertigkeit (K. Thomas 1909, in Archiv f. Physiologie 219)] the proportion of the nutrients from a food, esp. a protein, that can become incorporated into the tissues of the body, or be used by it as energy; spec. the percentage of nitrogen from a particular protein source absorbed by the body that is not excreted. ΘΚΠ the world > food and drink > food > [noun] > food value food value1859 fuel-value1886 biological value1915 1915 Jrnl. Biol. Chem. 23 252 Heating casein in a moist condition for one hour in an autoclave at 15 pounds' pressure destroys its biological value as a complete protein. 1960 A. E. Bender Dict. Nutrition & Food Technol. 17/2 The biological value of a protein is the amount, when fed under standard conditions, that is retained in the body for synthesis of body protein. 1993 Flex Feb. 29/2 A bodybuilder weighing 200lbs would require 200 grams of protein. Even more, if some of the protein..was of low biological value. 2006 Dogs Monthly July 25/2 Foods are described as having a biological value—the higher the percentage the better the quality of the protein it provides. < as lemmas |
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