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Determination of Extractive Value = Water & Alcohol Soluble Extractive Value & Calculation (English)

This video is also available in HINDI- Extractive Value = Water Soluble Extractive Value (HINDI) By Solution Pharmacy    • Extractive Value | Determination of W...   Download "Solution Pharmacy" Mobile App to Get All Uploaded Notes, Model Question Papers, Answer Papers, Online Test and other GPAT Materials - https://play.google.com/store/apps/de... EXTRACTIVE VALUE Water-soluble extractive value plays an important role in the evaluation of crude drugs. The less extractive value indicates the addition of exhausted material, adulteration, or incorrect processing during drying or storage or formulating. Extractive value is of two types- water-soluble and alcohol soluble that depends on the solvent used. if the water is used as a solvent it will be known as water-soluble extractive value and if alcohol is used in the place of water than it will know as alcohol soluble extractive value. Determination of Extractive values These are useful for the evaluation of a crude drug. Gives an idea about the nature of the chemical constituents present in the crude drug. Useful for the estimation of constituents extracted with the solvent used for extraction. Employed for material for which as yet no suitable chemical or biological assay exists. Preparations of the extracts Cold Maceration 1. Macerate 5g of the powdered crude drug with 100 ml of solvent in a closed flask for 24 hours, shaking frequently during first 6 hours and allowing to stand for 18 hours. 2. Filter rapidly taking precaution against loss of solvent, evaporate 25ml of filtrate to dryness in an evaporating dish to avoid the decomposition of natural metabolites, dry at 105 degree C, and weigh. 3. Calculate the percentage of water, alcohol, chloroform and petroleum ether soluble extractive value with reference to the air dried drug. Importance of Extractive values: - Extractive values are primarily useful for the determination of exhausted or adulterated drugs. The extractive value of the crude drug determines the quality as well as purity of the drug. Thus, alcohol and water soluble extractive values were determined. After watching this video you will be able to answer- what is extractive value, the importance of extractive value, what is extraction, how to extract plant part, the importance of extraction value, how to determine extraction value, Get in touch with the solution by just clicking following links- Facebook Group-   / solutionpharamcy   Facebook Page-   / pharmavideo   New channel (Pharmacy Dictionary) -    / @pharmacydictionary   Instagram-   / solutionpharmacy   E-Mail for official and other work - [email protected] LinkedIn-   / pushpendrakpatel   #solutionpharmacy #Pharmacologyclass #GPATonlinetest