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Mardius Syarif
Sekolah Tinggi Ilmu Farmasi (STIFARM) Padang
Medicine & Pharmacology

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Pengaruh Perebusan Terhadap Kadar Senyawa Fenolat Total dan Daya Antioksidan Dari Daun Kol (Brassica oleracea L. Var. capitata L.) Mardius Syarif; Mutiara Vani; Mahyuddin Mahyuddin
Jurnal Farmasi Higea Vol 1, No 1 (2009)
Publisher : STIFARM Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (175.159 KB) | DOI: 10.52689/higea.v1i1.7

Abstract

A determination of total phenolic compounds and antioxidant activity from cabbage leaves (Brassica olerace L var capitata L,) using spectrophotometry has been done. The determinan of total phenolic compounds was carried out according to Folin-Ciocalteu method and antioxidant activity was evaluated by DPPH method. Result of total phenolic compounds determinant showed that a fresh sample, sample boiled for 10 minutes, sample boiled for 20 minutes, sample boiled for 30 minutes were 363.395 μg/g, 44.198 μg/g, 39.510 μg/g, 33.156 μg/g while antioxidant activity at fresh sample were 60.55% in 0,1 g/mL fresh extract and for 10 minutes, sample boiled for 20 minutes, sample boiled for 30 minutes were 75.16%; 45.65%; 44.40%. Based on result of this research, concluded that treatment of boiling can reduce total phenolic compounds and antioxidant activity from cabbage leaves (Brassica olerace L. var capitata L,).
Pengaruh Cara Pengeringan terhadap Perolehan Kadar Senyawa Fenolat dan Aktivitas Antioksidan dari Daun Jambu Biji (Psidium guajava Linn.) Harrizul Rivai; Hasnah Hasnah; Mardius Syarif
Jurnal Farmasi Higea Vol 1, No 1 (2009)
Publisher : STIFARM Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (183.518 KB) | DOI: 10.52689/higea.v1i1.9

Abstract

A determination of phenolic compounds and antioxidant activity from Psidium guajava leaf by UV–Visible spectrophotometry has been done. The determination of phenolic compounds was carried out according to Folin-Ciocalteau method and antioxidant activity was evaluated by DPPH method, calculated as gallic acid equivalent (GAE). The determination of phenolic compound showed that the fresh sample , air drying, oven drying 40C and oven drying 60C contained 11.207; 4.129; 4.525 and 8.357 mg GAE/g Sample, IC50 of these sample were 0.218; 0.515; 0.50 and 0.315 mg/g, respectively.
Co-Authors Harrizul Rivai Hasnah Hasnah Mahyuddin Mahyuddin Mutiara Vani