| 释义 |
ˈpollenin Chem.
[ad. F. pollénine, f. pollen: see -in1.]
A supposed peculiar substance obtained from pollen, and from the spores of Lycopodium: see quots. Cf. sporopollenin.
Quot. 1931 does not represent a new sense.
1816Thomson's Ann. Philos. VII. 49 The pollen, he [Professor John] finds, always contains a peculiar substance, which has hitherto been considered as albumen; but to which he has given the name of pollenin. 1819J. G. Children Chem. Anal. 293 Pollenin is obtained from the pollen of the pinus sylvestris; it is yellow, and has neither taste nor smell. 1895Syd. Soc. Lex., Pollenin, name incorrectly given to the combustible substance which forms the residue after treatment of Lycopodium powder with dilute alcoholic solution of potash. Lycopodium powder is formed of spores, and is not composed of pollen. 1931Chem. Abstr. XXV. 2455 Qual[itative] tests on many pollens showed that their hulls or membranes are similar chemically to lycopodium-sporenin [sic], and the name pollenin is proposed for such compds. 1964[see sporonin]. 1971Chaloner & Orbell in J. Brooks et al. Sporopollenin 274 In terms of modern usage, both John and Braconnot were using the word pollenin not only for the exine, but also for the underlying intine of cellulose—in fact the whole of the sporoderm or spore coat. 1974Stanley & Linskens Pollen ix. 138 Early studies..reported pollen to contain about 40% pollenin. |