Article Per Year (5 Year)
p-Index From 2019 - 2024
0
P-Index
This Author published in this journals
All Journal PROSIDING SEMINAR KIMIA Jurnal Kimia Mulawarman
Ritson Purba
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
Chemistry

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
UJI AKTIVITAS SENYAWA ANTIOKSIDAN DARI DAUN ANDONG ( Cordyline Frutycosa (L.) A. Chev. ) DENGAN MENGGUNAKAN METODE DPPH Anton Gunawan; Daniel Tarigan; Ritson Purba
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2013
Publisher : PROSIDING SEMINAR KIMIA

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Has done antioksidan’s activity test of various fraction one that stem of andong leaf (Cordyline Fruticosa (L.) A. Chev.) that indigenous botanical samarinda’s garden. Andong leaf sample at extraction with etanol then concentrated by rotary evaporator. Extract afterwards ethanol at fraction crude with n-hexane and acetat ethyl. Base of antioksidan activity test with DPPH radical scavenging method by spectrophotometer, showed thet the most active fraction is the fraction of ethylacetate which have antioxidant activity EC 50 = 157.72 µg / mL. It is classified as moderate when compared with vitamin E that has antioxidant activity about EC 50 = 37.3 µg / mL.
UJI BIOAKTIVITAS PADA EKSTRAK KASAR ETANOL, FRAKSI n-HEKSAN, ETIL ASETAT DAN ETANOL-AIR DARI DAUN ANDONG (Cordyline terminalis Kunth) Ritson Purba; Enos Tangke Arung; Teddy Tranoto
JURNAL KIMIA MULAWARMAN Vol 11 No 2 (2014)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Phytochemical, brine shrimp lethality and antibacterial activity tests in each fraction from Andong leaves extract(Cordyline terminalis Kunth) that came fromUnmul Samarinda botanical garden, Kalimantan Timur has been carried out. The leaf was extracted with ethanol andconcentrated by using rotaryevaporator. The crudeethanol extract was fractioned with n-hexane, and ethyl acetate. Based on the secondary metabolites phytochemical test of the Cordyline terminalis Kunth leaves show that crudeethanol extract is contain phenol, saponin and steroid.n-hexane fraction iscontain steroid.Ethylacetate fraction is contain phenol and steroid. And ethanol-water fraction is contain phenol and saponin. Brine shrimp lethality test exhibit mortality rate of Artemiasalina (L) by Probit SAS analysis to determine lethal concentration 50% (LC 50 ) value. The test showed that the most active wascrudeethanol extract with LC 50 value of 26.8788 ppm. Antibacteria activity test of extracts for Bacillus cereus bacteria (positiveGram) andEscherichia coli (negativeGram) were carried out by paper disk method. The test showed that the most active were ethyl acetate extract with minimum inhibitor consentration of 2-10% which clear zone diameter was 6,4 mm on Bacillus cereus bacteria and 6 mm on Escherichia colibacteria.Keywords: Phytochemical, Antibacteria activity, LC 50
ISOLASI DAN IDENTIFIKASI SENYAWA STEROID DARI KULIT BATANG TUMBUHAN ANDONG (Cordyline fructicosa [L] A. Cheval) Annisa Aisya; Ritson Purba; Saibun Sitorus
JURNAL KIMIA MULAWARMAN Vol 9 No 2 (2012)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The isolation of steroid compounds from the bark of Andong plant (Cordyline fructicosa [L] A. Cheval) that come from Samarinda have been done. Their air-dried powdered from bark of Andong plant (Cordyline fructicosa [L] A. Cheval) (250 gram) were extracted by methanol at room temperature (27oC) and fractioned with n-hexane-water (1:1). Separation of steroid compounds in n-hexane fraction by column chromatography with silica gel 60 (35-70 mesh) based on the Isocratic method and produce six fractions, that fractions were 1, 2, 3, 4, 5 and 6 fractions. Fraction 3 gave a blue fluorescent staining that was observed after under UV light and with the Lieberman Burchard produces a green stain, then the fraction 3 was tested for steroid and produces a blue color indicates a positive steroid that has a yield of 0.0536 gram. Purification of the fraction 3 produces greenish-yellow crystals with Rf value of 0.72 with eluent chloroform (100%) while the value of Rf in n-hexane = 0.68 and Rf in ethyl acetate = 0.42. the UV-Vis spectrum of the crystalline isolate results provide absorption at wavelenght of 252 nm, 263 nm and 334 nm. While the result of FT-IR spectrum gives absorption at wave numbers: 689.63; 768.03; 800.79; 901.81; 977.32; 1052.32; 1201.45; 1273.35; 1358.76; 1463.11; 1662.32; 2853.02; 2926.19; 3056.42 and 3456.33. The bark of Andong plant (Cordyline fructicosa [L] A. Cheval) contains steroid compounds.Keywords: Andong (Cordyline fructicosa [L] A. Cheval), Steroid, Isocratic, Isolation
Co-Authors Annisa Aisya Anton Gunawan Daniel Tarigan Enos Tangke Arung, Enos Tangke Saibun Sitorus Teddy Tranoto