Phenolic constituents in major fractions of tropical rapeseed

✍ Scribed by Bibi, Nizakat ;Sattar, Abdus ;Chaudry, M. A.

• Book ID: 102218703
• Publisher: John Wiley and Sons
• Year: 1991
• Tongue: English
• Weight: 381 KB
• Volume: 35
• Category: Article
• ISSN: 0027-769X
• DOI: 10.1002/food.19910351013

✦ Synopsis

Phenolic constituents in major fractions such as seed, cotylendons and hulls of commercial rapeseed varieties Ganyou-5, Westar, Raya-brown and Raya yellow grown under tropical conditions in Pakistan, were determined. Quantitative determination in percentage of sinapine, catechin, tannic acid and total phenolics as well as in absorption units at 550 nm of procyanidine, proanthwyanidine and flavan-4-01s in relation to different extractants such as methanol, methanol-HCI and their totals, were made. These varieties and their fractions widely varied in different phenolic constiiuents in respect of extractants used. Hulls of all cultivars contained highcr levels of catechin, procyanidine, pronanthocyanidine and flavan-4-01s while lower amounts of sinapine, tannic acid and total phenols than the cotylendons. Cotylendons and hulls in seeds of raya-brown were exceptionally high in procyanidine.