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Changes in the composition of coffee leaf wax with development

by Stocker, H; Wanner, H.
Publisher: 1975Subject(s): COFFEA ARABICA | COMPOSICION | HOJAS | ANALISIS QUIMICO | ETAPAS DE DESARROLLO DE LA PLANTA | BIOQUIMICA | BOURBON | COMPOSICION FOLIAR | COFFEA ARABICA | LEAVES | PLANT DEVELOPMENTAL STAGES | BIOCHEMISTRY | COFFEA ARABICA | FEUILLE | STADE DE DEVELOPPEMENT VEGETAL | BIOCHIMIE In: Phytochemistry (RU) v. 14(9) p. 1919-1920Summary: Coffee leaf wax contains alkanes, free primary alcohols and free acids, together with unidentified substances. The relative amounts of each fraction varied with age: alkanes from 22-35 alcohols from 28-25, and free acids from 22-14. The major homologues of the alkane fraction were C29 and C31 of the alcohol fraction C30 and C32 and of the acid fraction C28, C30 and C32. The ratio of both C29:C31 alkanes and C30:C32 alcohols changed from 1:1 to 1:2 during development although their combined sum in each case remained constant at 90 (for alkanes) and 73 (for alcohols) of the weight of the respective fractions
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++Dat. num. 12 ref. Sum. (En)

Coffee leaf wax contains alkanes, free primary alcohols and free acids, together with unidentified substances. The relative amounts of each fraction varied with age: alkanes from 22-35 alcohols from 28-25, and free acids from 22-14. The major homologues of the alkane fraction were C29 and C31 of the alcohol fraction C30 and C32 and of the acid fraction C28, C30 and C32. The ratio of both C29:C31 alkanes and C30:C32 alcohols changed from 1:1 to 1:2 during development although their combined sum in each case remained constant at 90 (for alkanes) and 73 (for alcohols) of the weight of the respective fractions

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