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Supriyatna Supriyatna
Universitas Padjadjaran
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Aktivitas Antioksidan Minyak Atsiri dan Ekstrak Etanol Kulit Batang Sintok (Cinnamomum sintoc Bl.) terhadap 1,1-difenil-2-pikrilhidrazil (DPPH) Sri Adi Sumiwi; Anas Subarnas; Supriyatna Supriyatna; Marline Abdassah Bratadiredja
Indonesian Journal of Applied Sciences Vol 1, No 1 (2011)
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (718.443 KB) | DOI: 10.24198/ijas.v1i1.1803

Abstract

Sintoc (Cinnamomum sintoc Bl.) is a plant which is used as medicine. This plant has been known to have an analgesic antiinflamatory activity, therefore it is predicted to have an antioxidant activity. An investigation on antioxidant activity of sintoc essential oils and ethanolic extract of its cortex using ascorbic acid as standard has been carried out. Essential oils and ethanol extract of sintoc cortex was tested using DPPH (1,1-diphenyl-2-pikril-hidrazil) by measuring absorbance using visible spectrophotometer at 518 nm. The methods of this research were distillation of essential oils and extraction of sintoc cortex, determination of the essential oil and extract concentrations required for 50% inhibition of DPPH radical scavenging effect (IC50) with ascorbic acid as the possitive control. The variation concentration  of essential oils are 15, 5, 1, 0.1, 0.5 ppm and 25, 20, 17, 15, 10 ppm for ethanolic extracts. The results showed that the essential oil showed antioxidant activity with IC50 value was 16.29 ppm (5 times lower than ascorbic acid) and then ethanolic extract showed IC50 value 38.89 ppm (11 times lower than ascorbic acid, IC50 of ascorbic acid was 3.35 ppm).
Studi Hubungan Struktur dan Aktivitas Senyawa Antioksidan dari Kulit Batang Kandis Gajah (Garcinia griffithii T. Anders) ELFITA ELFITA; DACHRIYANUS DACHRIYANUS; SUPRIYATNA SUPRIYATNA; HUSEIN H. BAHTI
JURNAL ILMU KEFARMASIAN INDONESIA Vol 9 No 1 (2011): JIFI
Publisher : Fakultas Farmasi Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1347.253 KB)

Abstract

Four xanthones and two benzophenones from the stem bark of kandis gajah (Garcinia griffithii) by extraction and chromatographic methods have been isolated. The six compounds were determined as: 1,7-dihydroxyxanthone (1), 1,6,7-trihydroxyxanthone (2), 1,6-dihydroxy-3-methoxy-4,7-di-(3-methylbut-2-enyl)xanthone (3), 1,5-dihydroxy-3,6-di-methoxy-2,7-di-(-3-methylbut-2-enyl)xanthone (4), guttipherone I (5), and isoxanthochymol (6). All of the isolated compounds were submitted to antioxidant activity assay using three methods: (i) free radical scavenging method, (ii) xanthine-xanthine oxidase (XO) method, and (iii) nitroblue tetrazolium xanthine oxidase (NBT/ XO). Guttipherone I (5) and isoxanthochymol (6) have strong antioxidant activity (IC50 ≤10.2 µg/mL), 1,6,7-trihydroxyxanthone (2) and 1,6-dihydroxy-3-methoxy-4,7-di-(3-methylbut-2-enyl)xanthone (3) as active compounds (IC50 ≤ 100 µg/mL), while 1,7-dihydroxyxanthone (1) and 1,5-dihydroxy-3,6-dimethoxy-2,7-di-(3-methylbut-2-enyl)xanthone (4) were inactive (IC50 > 100 µg/mL). Base on the data, antioxidant activity of isolated compounds was inhuenced by dihydroxyl groups at ortho position, number of hydroxyl group, and hydroxyl group at para position to C carbonyl at heterocyclic.
Co-Authors Anas Subarnas Dachriyanus Elfita Husein Hernadi Bahti Marline Abdassah Bratadiredja Sri Adi Sumiwi