期刊
COLLOIDS AND SURFACES B-BIOINTERFACES
卷 45, 期 3-4, 页码 174-180出版社
ELSEVIER
DOI: 10.1016/j.colsurfb.2005.08.010
关键词
Raman spectroscopy; leaf; cuticle; wax; evanescent wave
The use of total internal reflection (TIR)-Raman spectroscopy to examine cuticular wax layers in vivo at the surface of barley leaves (Hordeum vulgare L. cultivar Pastoral) is demonstrated. The limited penetration depth (40 nm) of the evanescent wave compared to the thickness of the wax layer eliminates problems arising from fluorescence from underlying pigments. Epicuticular wax crystals are observed to be more crystalline than the amorphous wax layer, which is analysed after removal of the wax crystals by cellulose acetate stripping. Carotenoids are detected as trace species in the cuticular waxes. (c) 2005 Elsevier B.V. All rights reserved.
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