| 单词 | nicotic acid |
| 释义 | > as lemmasnicotic acid nicotic acid n. Chemistry malic acid, as obtained from the tobacco plant, Nicotiana tabacum, where it occurs in combination with nicotine; (occasionally also, by confusion) nicotinic acid. ΚΠ 1860 C. Knight Eng. Cycl.: Arts & Sci. V. 938 Nicotic acid, a peculiar acid allied with oxalic acid, and said to be contained in tobacco juice. 1872 J. R. Nichols Fireside Chem. 42 Nicotine..is..found in tobacco in chemical combination with an acid. The acid is identical with the malic, found in fruits; but in tobacco it is called nicotic acid. 1882 Jrnl. Chem. Soc. 82 311 Cinchomeric acid when heated decomposes into γ-pyridinecarboxylic and nicotic acids. 1995 New Straits Times (Malaysia) (Nexis) 31 Aug. 8 It is possible that 250mg of vitamin B3 (nicotic acid) can cause slight headaches in sensitive people. < as lemmas |
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