Hair Colorants

Formulation and evaluation of commonly used natural hair colorants

Loss of colour in hair is due to varied reasons like genetic influence, effect of environmental factors, use of alcoholic preparations, etc. Though the permanent synthetic hair dyes are available in different colour ranges and retain natural lustre, they have the chief disadvantage of producing hypersensitive reactions in some individuals. In the present investigation various combinations of po...

Natural Food Colorants

Photochromic and Thermochromic Colorants in Textile Applications

Commercial photochromic and thermochromic colorants that change rapidly and reversibly from colorless to colored state when activated by stimuli like ultraviolet irradiation, temperature or pH are well established class of colorants for manufacturing of niche products. Use of photochromic and thermochromic systems in applications like medical thermography, plastic strip thermometers, photochrom...

Non-invasive Analyses of Ancient Ceramics Colorants

Present research exploits the benefits of the non-invasive and non-destructive spectroscopic methods in order to characterize the pigments which constitute the colorants found on ancient ceramic pieces. A red colorant, which occurs on the outer surfaces of the ceramic pieces excavated from archaeological finding sites Čepin-Ovčara and Kneževi Vinogradi-Osnovna škola and in earth piece from Aljm...

Squid Pen Chitin Chitooligomers as Food Colorants Absorbers

One of the most promising applications of chitosanase is the conversion of chitinous biowaste into bioactive chitooligomers (COS). TKU033 chitosanase was induced from squid pen powder (SPP)-containing Bacillus cereus TKU033 medium and purified by ammonium sulfate precipitation and column chromatography. The enzyme was relatively more thermostable in the presence of the substrate and had an acti...