Green Natural Colorants

Natural Food 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 deep eutectic solvents providing enhanced stability of natural colorants from safflower (Carthamus tinctorius).

A certain combination of natural products in the solid state becomes liquid, so called natural deep eutectic solvents (NADES). Recently, they have been considered promising new green solvents for foods, cosmetics and pharmaceuticals due to their unique solvent power which can dissolve many non-water-soluble compounds and their low toxicity. However, in addition to the features as solvents, the ...

Colorimetric and spectral properties of natural colorants used in handmade traditional Persian carpets

Ozone fading of natural organic colorants: mechanisms and products of the reaction of ozone with indigos.