| 单词 | L-tryptophan |
| 释义 | L-tryptophan L-tryp.to.phan AHD: [µl”tr¹p“t…-f²n”] D.J. [7el6tr!pt*7f#n]K.K. [7Wl6tr!pt*7f#n]n.（名词）The biologically active form of the amino acid tryptophan, which is capable of being incorporated into proteins, such as the neurotransmitter serotonin. It has not been available as a dietary supplement in the United States since 1989 but is sold commercially outside of the United States.L-色胺酸：能与蛋白质合成的色胺基酸生物活化形式，如神经传递素5-羟色胺。直到1989年美国才将其列入辅助食品，但也只在美国以外地区贩卖 |
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