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All Journal Indonesian Journal of Cancer Chemoprevention Pharmaceutical Sciences and Research (PSR)
Herry Cahyana
Universitas Indonesia
Biochemistry, Genetics & Molecular Biology Medicine & Pharmacology

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Antioxidant Activity of Garcinia cf bancana Miq Hartati, Sri; Triyem, .; Cahyana, Herry
Indonesian Journal of Cancer Chemoprevention Vol 1, No 2 (2010)
Publisher : Indonesian Research Gateway

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Abstract

Guttiferron F and essential oil were isolated from extract  n-hexane of  Garcinia cf bancana  Miq. Antioxidant activity was done by DPPH method to   n-hexane, methanol, ethyl acetate, n-butanol extracts and Guttiferron F, showed activity with IC50 24.5, 22.4, 29.2, 37.6 and 25.8 µg/mL respectively. The structure elucidation of Guttiferon F  based on spectroscopy data of IR, NMR of 1H and 13C.
Sintesis Ramah Lingkungan Senyawa Imina Turunan Vanilin dan 2-Hidroksi Asetofenon Serta Uji Aktivitas Biologi dan Antioksidan Cahyana, Herry; Pratiwi, Putri
Pharmaceutical Sciences and Research Vol. 2, No. 1
Publisher : UI Scholars Hub

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Abstract

Eco-friendly synthesis of imine derivative compound from 2-hydroxy acetophenone and vanillin had been conducted by using a method of stirring (with stirrer) in a water solvent. The whole experiment began with the synthesis of imine compounds, followed by purification and characterization of the synthesis products and finally analysis on their biological and antioxidant activities. The experiments showed that imine compounds could be synthesized by a chemical reaction of 4-amino antipirin aqueous solution with 2-hydroxy acetophenone and vanillin at magnetic stirrer speed of 250 and 450 rpm, respectively, which produced product A, (E)-4-(1-(2-hydroxyphenyl) ethylideneamino)-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H) -one and product B, (E)-4-(4-hydroxy-3-(vinyloxy) benzylideneamino)-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one. Yield percentage (%) obtained from the synthesis of product A and B were 40.68% and 19.76% respectively. Toxicity and antioxidant activity tests showed that the product B were toxic and more active as an antioxidant than product A. While the antibacterial activity test showed that both products had a response to Staphyllococcus aureus bacteria and Escherechia coli bacteria.
Co-Authors . Triyem Putri Pratiwi Sri Hartati