Today, natural colorants are emerging globally due to their safety and environmental friendly characteristics. Natural dyes have been employed in dyeing Persian carpet piles for many years. Food and fruit industry wastes are one of the main sources of colorants which can be employed for textile coloration. Eggplant (Solanum melongena), a member of the family Solanaceae, is used in food recipes....

The removal of dyes from wastewater is one the biggest problems in textile industry for
 both environment and manufacturers. This study examined possibility applying ozone 
 (O3) O3 combination with ultraviolet (UV) to treat a mixture synthetic containing five different (Acid Red 17, Acid Yellow 11, Direct 12, Blue 86 Mordant Violet 40) for decolorization efficiency chromophore anchor...

For studying the morphology of bacteria in fixed smears, Knaysi (J. Bact., 49, 375) demonstrated the value of staining by a method showing the cell wall. Knaysi (J. Bact., 41, 141) developed a tannin alum fuchsin method which stains differentially the cytoplasm, cell wall, and capsule. It is the purpose of this note to report another cell wall stain in which the cell wall is positively charged ...

Indigo blue is a natural organic color from the Indigofera tinctoria plant. It insoluble in water and does not require mordant to fix color; therefore, due its nature it can be considered as pigment or dye. The identification of indigo cultural heritage very difficult complexity chemical formula changes that undergo certain conservation exposition conditions. For this reason, characterization p...

Sophora japonica L. of 10-20 m tall is a popular ornamental tree in Europe, North America and South Africa, grown for its white flowers, borne in late summer after most other flowering trees have long finished flowering. Phellodendron amurense Ruprecht commonly called the Amur cork tree is a major source of huáng bò used in traditional Chinese medicine as a painkiller. In this study, staining p...

The surface chemistry of a commercial AC (AC(0)) was selectively modified, without changing significantly its textural properties, by chemical oxidation with HNO(3) (AC(HNO3)) and O(2) (AC(O2)), and thermal treatments under H(2) (AC(H2)) or N(2) (AC(N2)) flow. The effect of modified AC on anaerobic chemical dye reduction was assayed with sulphide at different pH values 5, 7 and 9. Four dyes wer...