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Studies on Varagu Starch
Author(s) -
Paramahans S. V.,
Wankhede D. B.,
Tharanathan R. N.
Publication year - 1980
Publication title -
starch ‐ stärke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.62
H-Index - 82
eISSN - 1521-379X
pISSN - 0038-9056
DOI - 10.1002/star.19800320403
Subject(s) - amylose , starch , swelling , solubility , retrogradation (starch) , solvent , dimethyl sulfoxide , chemistry , hildebrand solubility parameter , fractionation , granule (geology) , chemical engineering , polymer chemistry , chromatography , organic chemistry , materials science , composite material , engineering
Abstract Starch has been isolated from the millet varagu in 63% yield. Study of the physical properties revealed: moderate swelling and low solubility power in water; extensive solubility in dimethyl sulfoxide, probably indicative of easy solvent penetration due to labile and heterogeneous bonding forces within the granule. Brabender amylogram indicated little retrogradation on cooling, owing to strong bonding between the linear and branched molecules of starch. The amylose content of the starch was 24% as determined by paper chromatographic fractionation and “Blue value” method.