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Leaf wax of oats
Author(s) -
Tulloch A. P.,
Hoffman L. L.
Publication year - 1973
Publication title -
lipids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.601
H-Index - 120
eISSN - 1558-9307
pISSN - 0024-4201
DOI - 10.1007/bf02533144
Subject(s) - wax , epicuticular wax , chemistry , organic chemistry , botany , chromatography , biology
Leaf wax of oats (Kelsey variety) consists of hydrocarbons (5%), esters (10%), free alcohols (45%), free acids (2.5%), β‐diketone (5.5%), hydroxy‐β‐diketones (2.5%), and unidentified (29%). Wax on leaf blades contains more free alcohols than wax on leaf sheaths, and wax on the flag leaf sheath contains more β‐diketone than wax on the rest of the plant. Principal hydrocarbons are C 29 , C 31 , and C 33 . The esters, mainly C 44 –C 48 and C 52 , are probably C 18 –C 22 and C 26 esters of hexacosanol. Free alcohols are almost entirely hexacosanol. The β‐diketone is hentriacontane‐14, 16‐dione. Hydroxy β‐diketones are a mixture of 5‐, 6‐ and 7‐hydroxyhentriacontane‐14, 16‐diones in the proportions 58∶35∶7. The wax also contains a small amount (0.5%) of 1,16‐hexacosanediol.