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Dyeing properties of silk produced by silkworms reared on artificial and mulberry leaf diets
Author(s) -
Sasaki* Hiroaki,
Donkai Nobuo,
Ito Hiraku,
Imamura Katustoshi,
Morikawa Hideaki
Publication year - 2000
Publication title -
coloration technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 1472-3581
DOI - 10.1111/j.1478-4408.2000.tb00012.x
Subject(s) - fibroin , sericin , dyeing , silk , acid dye , bombyx mori , chemistry , orange (colour) , nuclear chemistry , materials science , polymer chemistry , food science , composite material , organic chemistry , biochemistry , gene
The dyeing properties were investigated for silk proteins produced by silkworms reared entirely on an artificial diet (A) and a mulberry leaf diet (M). The dyeing experiments were carried out with CI acid orange 7 at pH 3.9 and 60°C. The sericin contents of the A and the M raw silk samples were determined to be 26.0% and 23.7%, respectively. The equilibrium dye uptake and the dyeing rate of the A silk fibroin were almost the same as those of the M silk fibroin. The equilibrium dye uptake on each silk sericin was 3–4 times higher than that of the silk fibroin. On the other hand, the equilibrium dye uptake of the A silk sericin was higher than that of the M silk sericin, but the dyeing rate of the former was slower than that of the latter.