Majalah Obat Tradisional
Vol 15, No 1 (2010)

PENGARUH CARA PENGERINGAN TERHADAP PEROLEHAN EKSTRAKTIF, KADAR SENYAWA FENOLAT DAN AKTIVITAS ANTIOKSIDAN DARI DAUN DEWA (Gynura pseudochina (L.) DC.)

Harrizul Rivai (Faculty of Pharmacy, University of Andalas)
Hazli Nurdin (Faculty of Mathematics and Science, University of Andalas)
Hamzar Suyani (Faculty of Mathematics and Science, University of Andalas)
Amri Bakhtiar (Faculty of Pharmacy, University of Andalas)

Article Info

Publish Date
01 Jan 2010

Abstract

Effects of drying methods in gaining of extractive, phenolic content and antioxidant activity in Gynura pseudochina (Lour.) DC leaves have been investigated. The drying methods tested were air-drying at ± 25 oC, oven-drying at 40 OC,  oven-drying at 60 OC, microwave oven-drying and fresh samples as control. Results revealed that drying of the fresh plant caused the decrease of extractive obtainability, phenolic content and antioxidant activity. There were significant differences among drying methods (P < 0.05). Among the drying methods tested, the highest  extractive obtainability was by microwave oven-drying, whereas the highest phenolic concentration and antioxidant activity were by air-drying at ± 25 oC.

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Journal Info
Majalah Obat Tradisional
Website

Abbrev

TradMedJ

Publisher

Universitas Gadjah Mada

Subject

Health Professions Medicine & Pharmacology Public Health

Description

raditional Medicine Journal (Majalah Obat Tradisional), or Trad. Med. J. (ISSN 1410-5918 (print) and ISSN 2406-9086 (online)), is an international scientific journal published by Faculty of Pharmacy, Universitas Gadjah Mada, three times annually. Collaborating with Indonesian Pharmacist Association, ...