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Rosita Melannisa
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Biochemistry, Genetics & Molecular Biology Medicine & Pharmacology

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KORELASI KANDUNGAN FENOLIK DAN AKTIVITAS ANTIOKSIDAN DAUN JAMBU METE Ika Trisharyanti Dian Kusumowati; Rosita Melannisa; Kartikaning Ratri
Biomedika Vol 3, No 2 (2011): Biomedika Agustus 2011
Publisher : Universitas Muhamadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/biomedika.v3i2.251

Abstract

The ethanolic extract of Anacardium occidentale L. leaves contains phenolic compounds,  avonoids, alkaloids, saponins, tannins, and steroids that could have antioxidant activity. The aim of this research was to determine the correlation between the antioxidant activity and the phenolic compounds of the ethanol extract of Anacardium occidentale L. leaf. The DPPH methode was used to determine the antioxidant activity. The total phenolic determined using Folin-Ciocalteu reagent. There was a positive correlation between antioxidant activity and total phenolic content in the ethanolic extract of cashew leaf with correlation coef cient R2 = 0.5888.Keywords: Anacardium occidentale L., antioxidant, phenolic compounds
DAYA ANTIBAKTERI EKSTRAK ETANOL DAUN SENGGANI (Melastoma affine D. Don) Ika Trisharyanti Dian Kusumowati; Rosita Melannisa; Angga Prasetyawan
Biomedika Vol 6, No 2 (2014): Biomedika Agustus 2014
Publisher : Universitas Muhamadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/biomedika.v6i2.278

Abstract

Melastoma affine D. Don had some activities such as anthelmintic, antibacteria, antiinfiammation, antifungal, and antitumor. The aims of this research was determine antibacteria activity of ethanolic extract of Melastoma affine D. Don. The antimicrobial activity was tested by solid dilution method to get Minimum Inhibition Concentration (MIC). The compounds in Melastoma affine D. Don was analyzed by tube test method and Thin Layer Chromatography (TLC) with chloroform : methanol : formic acid (8,5:1,5:0,5) as mobile phase and silica gel GF254 as stationary phase. The result showed ethanolic extract of Melastoma affine D. Don contains alkaloid, polyphenol, fiavonoid, saponin, and essential oil. The MIC of Senggani against Staphylococcus aureus was 2% and 3% against Escherichia coli and the extract could not inhibit Staphylococcus aureus and Escherichia coli multiresistant until concentration 7% extract ethanol.Keywords: Melastoma affine D. Don, Staphylococcus aureus, Escherichia coli
Co-Authors Angga Prasetyawan Ika Trisharyanti Dian Kusumowati Kartikaning Ratri