WebJul 20, 2024 · NATURE:- Greenish grey or Blue colour, It is insoluble in water,HCl & Sulphuric acid. CHEMICAL CONSTITUENTS:- Natrolite, Albite, Serpentine, Joaquinite. USES:- It is used as gel in ointment & Cream, It is used as a suspending and emulsifying agent BENTONITE. WebDefinition, history and scope of Pharmacognosy including indigenous system of medicine. Various systems of classification of drugs of natural origin. Adulteration and drug …
Extracts: Catechu - The Pharmacognosy
WebDec 17, 2024 · Black Catechu Synonyms:- Gambier, Catechu Biological source:-It is an aqueous extract prepared from the leaves and young shoots of Uncaria gambier … WebThe tannins derived from gallic acid are known as gallitannins and from that of ellagic acid are known as gallitannins. The gallic acid is found in rhubarb, clove and ellagic acid is found in eucalyptus leave and myrobalans and pomegranate bark. These tannins treated with ferric chloride to produced blue or black colour. 2. Condensed tannins: santa claus sleigh png
Black Catechu: Sources, Macroscopical Characters and Uses
WebMcq in Pharmacognosy - Free download as PDF File (.pdf), Text File (.txt) or read online for free. Pharmacognosy MCQs. Pharmacognosy MCQs ... Ashoka c) Pale catechu d) Black catechu Ans: c. 9. Black catechu contains about percentage of acacatechin: a) One percentage b) Three percent c) Seven percent d ) Ten percent Ans: d. CHOOSE THE … WebCutch or black catechu resembles pale catechu or gambier in its composition. It contains about 2–12% of catechin and about 25 to 33% of phlobatannin catechutannic acid. The … WebMay 15, 2024 · d) Black. 98. Gambir flurescin test is used for drug: a) Arjuna b) Ashoka c) Pale catechu d) Black catechu. 99. Black catechu contains about percentage of acacatechin: a) One percentage b) Three percent c) Seven percent d) Ten percent. 100. Composition of Molisch reagent is a) Alpha napthol + sulphuric acid b) Beta napthol + … short orange bridesmaid dresses