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Measurement of seasonal variation of fructan in the haplocorm of timothy ( Phleum pratense , L.)
Author(s) -
Sheard R. W.
Publication year - 1967
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.2740180803
Subject(s) - fructan , fructose , food science , chemistry , phleum , sucrose , zoology , botany , biology
A simple colorimetric procedure was used for the determination of fructose in decolorised ethanol extracts of non‐polymer fructose and in hot‐water extracts of fructan fructose from lyophilised haplocorms of timothy. Positive errors in estimates of non‐polymer fructose resulted from pigments not being removed and from heat‐drying, whereas negative errors in fructan fructose resulted from oven‐drying. Fructan was located primarily in the haplocorm and stubble of timothy and consisted of 84‐98% of the total fructose in the haplocorm, depending on the time of sampling.