Antioxidant activities of methanol extracts of Malaysian medicinal plants Koushik Saha; Nordin H. Lajis, Putra Malaysia Univ. (UPM), 43400 UPM Serdang, Selangor (Malaysia). Institute of BioScience. Phytomedical Laboratory; Ahmad Sazali Hamzah, Teknologi Mara Univ. (UiTM), 40450 Shah Alam, Selangor (Malaysia). Faculty of Applied Sciences. Dept. of Chemistry ...
2004
Conference Proceeding
Eight methanol extracts of 7 Malaysian medicinal plants were screened for antioxidant activity using FTC and TBA methods. The plants are : Lasianthus oblongus, Psychotria rostrata, Spermacoce exilis, ...Chasalia chartacea, Hedyotis vertic illata, Spermacoce articularis and Leea indica. All the plant extracts showed strong activity comparable with or higher than that of alpha-tocopherol, BHT and quercetin in both methods.
Chemical constituents of Ardisia elliptica Thunb Juriyati Jalil, Kebangsaan Malaysia Univ. (UKM), Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur (Malaysia). Faculty of Allied Health Sciences. Dept. of Pharmacy; Ibrahim Jantan; Khozirah Shaari, Putra Malaysia Univ. (UPM), 43400 UPM Serdang, Selangor (Malaysia). Institute of BioScience
2004
Conference Proceeding
Ardisia elliptica Thunb. belongs to the plant family Myrsinaceae. Phytochemical study on the ethyl acetate fraction of the leaves of A. elliptica has resulted in the isolation of three compounds, ...5-pentadecylbenzene-l,3-diol or 5-pentadecylresorcinol (1), alpha-amyrin (2) and taraxerone (3). The chemical structures were established using modem spectroscopic techniques. This is the first report of the isolation of 5-pentadecylbenzene-l,3-diol from this species.
Primary study of nitrate removal Urano, Y.(Gunma-ken. Livestock Experiment Station, Fujimi (Japan)); Yamada, M; Suzuki, M ...
Bulletin of the Gunma Prefectural Livestock Experiment Station (Japan),
20/Mar
8
Journal Article
This paper presents study results of the effects of the grapevine cultivar (27 cultivars for white and 21 cultivars for red wines) as well as effects of the degree of ripeness of the grape (17-18% ...and 20-21% of sugar) and its health condition (10 and 40% spread over by Botritis cinerea) on the content of methanol in wines. It has been found out that methanol content varies depending on the cultivar, study year and the method of vinification, but that it was in all wines below the borderline maximum allowable content regulated by OIV. Ripening of grapes results in the methanol content increase in white wines and decrease in red wines. Wines produced from the grapes spread over by Botrytis cinerea to the extent of 10 and 40% have higher content of methanol compared with wines produced from the healthy grapes.
