Definition of Orcein. Meaning of Orcein. Synonyms of Orcein

- Orcein, also archil, orchil, lacmus and C.I. Natural Red 28, are names for dyes extracted from several species of lichen, commonly known as "orc****a weeds"...
- same as those of the related mixture known as orcein but in different proportions. In contrast with orcein, the prin****l constituent of litmus has an average...
- O-methylation with dimethylsulfate. It is used in the production of the dye orcein and as a reagent in some chemical tests for pentoses, such as Bial's Test...
- belonging to the family Roccellaceae, commonly called orc****a weed or orchil. Orcein and other lichen dyes have largely been replaced by synthetic versions....
- presence of HBsAg is more commonly demonstrated by the use of the Shikata orcein technique, which uses a natural dye to bind to the antigen in infected liver...
- cochineal, so Medieval violet colors were inclined toward red.[citation needed] Orcein, or purple moss, was another common purple dye. It was known to the ancient...
- dye with powder; woad or indigo dye for blue and cochineal dye for red. Orcein, or purple moss, was another common violet dye. It was known to the ancient...
- the EU. E175 Gold Gold Approved in the EU. E180 Pigment Rubine, Lithol Rubine BK Red Approved in the EU. E181 Tannin Brown E182 Orcein, Orchil Purple...
- orcein-positive granules, whereas the grade of necroinflammatory activity is based on cholangitis and interface hepatitis. The ac****ulation of orcein-positive...
- black color), but aldehyde fuchsin stains, Weigert's elastic stains, and orcein stains also work. These fibers give elastic cartilage great flexibility...