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Changes in the glucose: Fructose ratio during the growth period of the razaki grape
Author(s) -
Soulis Theodossios P.,
Avgerinos Asterios S.
Publication year - 1984
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740350509
Subject(s) - fructose , vitis vinifera , cultivar , table grape , horticulture , chemistry , period (music) , food science , botany , zoology , biology , physics , acoustics
The fructose content of table grapes is of importance, especially for cultivars growing in cold climates. The glucose: fructose ratio (G: F ratio) in the table grape Vitis vinifera L, cv. Razaki during the entire growth period was determined by polarimetric and volumetric methods, This ratio was found to be 1.95 at the beginning of the growth period and 1.55 in the final stage of growth (over‐ripe), with an excess of glucose throughout. The G:F ratio decreased until the middle of August and was almost constant thereafter, Acidity decreased until mid‐September, when the berries reached maximum weight.