| 释义 |
osmophore|ˈɒzməʊfɔə(r)|
[f. osmo-1 + -phore; in sense 1 a back-formation from osmophoric a.]
1. A chemical group whose presence in the molecules of a substance causes it to have a smell.
1919Perfumery & Essent. Oil Rec. 21 May 105/1 Both Rupe and Majewski and Cohn point out that one osmophore can often replace another without distinctly changing the odour. 1944R. W. Moncrieff Chem. Senses ix. 185 The ether group is only a weak osmophore and is easily overpowered by other features of the molecule. 1963W. Summer Methods Air Deodorization i. 66 One and the same osmophore appearing with different molecules usually causes different odours.
2. [ad. It. osmoforo (G. Arcangeli 1883, in Nuovo Giornale Bot. Ital. XV. 75).] A scent gland found in the flowers of certain plants belonging to the families Orchidaceæ, Araceæ, Aristolochiaceæ, and Asclepiadaceæ.
1966S. Vogel in Proc. 5th World Orchid Conf. 254/1 We could find such glands, called osmophores, in many different orchidaceous groups... A genuine scent organ or osmophore..may be defined as a glandular, multicellular and clearly differentiated tissue within the floral region, which is well exposed to the atmosphere. 1967New Scientist 22 June 725/2 Several orchids and a few other flowers have..developed glands (osmophores) producing scent substances (terpenes) in liquid form. 1974C. L. Withner et al. in C. L. Withner Orchids vi. 305 The scent tissue is ultimately organized into scent glands, or osmophores.
So osmoˈphoric a. [ad. G. osmophor (Rupe & Majewski 1900, in Ber. d. Deut. Chem. Ges. XXXIII. 3402)], of, pertaining to, or being an osmophore (in either sense).
1901Jrnl. Chem. Soc. LXXX. i. 103 (heading) Osmophoric groups. 1922G. H. Parker Smell, Taste, & Allied Senses iii. 79 Osmophoric groups are such as the hydroxyl, aldehyde, keton, ester, nitro, and nitril groups. None of these..is associated with a particular odor, but any one may be the occasion of odor, if it occupies an appropriate place on a benzene ring. 1968W. McCartney Olfaction & Odours 133 These investigations suggest that the quality of the odour of a compound depends largely on the steric structure and is modified..by the presence of osmophoric groups. 1974C. L. Withner et al. in C. L. Withner Orchids: Sci. Stud. vi. 305 The richness of the osmophoric cells in reserve materials relates to their production of fragrant terpene oils. |