Reference

Dye binding to the surface of wheat starch granules

Dye binding to the surface of wheat starch granules. Seguchi, Masaharu (Seibo Jogakuin Jr. Coll., Japan). Cereal Chem., 63(6), 518-20 (English) 1986. CODEN: CECHAF. ISSN: 0009-0352. DOCUMENT TYPE: Journal CA Section: 17 (Food and Feed Chemistry) Protein-specific dyes (Coommassie brilliant blue [6104-58-1], eosin Y [17372-87-1], and amido black 10B [1064-48-8]) were bound to wheat prime starch granules. Microscopic observation of dye-treated starch granules showed color on their surface. Fluorescamine [38183-12-9]-treated starch granules showed fluorescence under a fluorescence microscope. Glass beads coated with bovine serum albumin could be stained with amido black 10B, but glass beads without this coating could not be stained. Phase contrast microscopic observation of amido black 10B-stained and dried starch granules showed peeling of their colored surface protein film from starch granules, indicating the presence of a protein film on the surface of the starch granule. After various treatments (7.0% HCl, 0.2% NaOH, and 1.0% sodium dodecyl sulfate) of wheat prime starch, dye-binding capacity (with amido black 10B) decreased to about 70% of the nontreated sample.In this experiment, several chemicals are used like 17372-87-1 and 6104-58-1 Complete exclusion of the surface protein was not obsd. After extensive treatment, the starch granules swelled and completely lost dye-binding capacity. .

Hair dyes containing levulinic acid

Hair dyes containing levulinic acid. (Hoyu Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 60028913 A2 14 Feb 1985 Showa, 6 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: ICM: A61K007-13. APPLICATION: JP 83-136086 26 Jul 1983. DOCUMENT TYPE: Patent CA Section: 62 (Essential Oils and Cosmetics) Hair direct dyes (pH ~ 1.5-4.5) contain 5 to ~25% levulinic acid [123-76-2] and dyes selected from the following groups of compds.: triphenylmethane, azo, quinoline, thiazole, xanthene, indigoid, acridine, azine, stilbene, oxazine, and anthraquinone. These dyes are nonirritating and produce smooth and lustrous hair. Thus, a black dye comprises Japan Black 401 (di-Na 8-amino-7-(p-nitrophenyl)azo-2-phenylazo-1-naphthol-3,6-disulfonate) [1064-48-8] 0.5, Japan Orange 201 [Na 4-(p-sulfonyl)azo-(2,4-xylylazo)-1,3-resorcinol] [596-03-2] 0.1, Japan Red 2 ([1-(4-sulfo-1-naphthylazo)-2-naphthol-3,6-disulfonate] [915-67-3] 0.1, benzyl alc. 5.0, levulinic acid 10.0, H3PO4 1.0, hydroxyethyl cellulose 1.0, and H2O 82.3% by wt (pH 3.0).