Andi Hairil Alimuddin
Program Studi Kimia, Fakultas MIPA, Universitas Tanjungpura

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KARAKTERISASI STRUKTUR TRITERPENOID DARI AKAR TANAMAN LANGSAT (Lansium domesticum) (CHARACTERIZATION OF TRITERPENOID STRUCTURE FROM LEAN PLANT (Lansium domesticum)) Rizki Triadi; Rudiyansyah Rudiyansyah; Andi Hairil Alimuddin
Indonesian Journal of Pure and Applied Chemistry Vol 4, No 1 (2021)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (732.088 KB) | DOI: 10.26418/indonesian.v4i1.45237

Abstract

Langsat root is a part of Lansium domesticum which is still rarely explored for its secondary metabolites. Triterpenoids are dominantly isolated from langsat plants. This research was conducted to isolate and characterize a triterpenoid structure by doing maceration and partition, phytochemical test, chromatography, and analysis of 1H-NMR spectrum. GKGT2 isolate is a white powder with a mass of 4 mg. 1H-NMR spectrum data (CD3OD, 500 MHz) shows an oxiran proton signal at H 4.13. The hydroxyl proton at C-1 with a chemical shift of 7.83 (1H, s) is a sharp singlet because a hydrogen bond strongly with the carbonyl at C-16. The presence of a singlet proton at H 5.85 (1H) and signals below 2 ppm are typical for terpenoid compounds. On the basis of a phytochemical test and chemical shift data in 1H-NMR spectrum, it can be concluded that a structure of GKGT2 isolate showed many similarities to Dukunolida C.
ISOLASI DAN KARAKTERISASI SENYAWA FENOLIK DARI DAUN PUTAT (Planchonia valida Blume) (ISOLATION AND CHARACTERIZATION OF PHENOLIC COMPOUND FROM PUTAT LEAVES (Planchonia valida Blume)) syafri syamsudin; Andi Hairil Alimuddin; Berlian Sitorus
Indonesian Journal of Pure and Applied Chemistry Vol 5, No 2 (2022)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (376.476 KB) | DOI: 10.26418/indonesian.v5i2.56554

Abstract

Gallic acid have been isolated from the leaves of the Putat plant (Planchonia valida Blume). This study aimed to isolate and characterize isolates from Putat leaves by phytochemical and FTIR spectrophotometry. The research procedures included extraction by maceration, partitioning by fractionation, vacuum liquid chromatography (KCV), gravity column chromatography (KKG), thin layer chromatography (TLC), and FTIR analysis. A total of 1400 grams of putat leaf powder was macerated to produce 159.243 grams (11.38%) of methanol extract. A total of 101 grams of methanol extract was dechlorophyllated to obtain 21.430 grams (21.21%) of dechlorophyllated extract. The dechlorophyllated extract was partitioned gradually with n-hexane and ethyl acetate to produce n-hexane fractions of 0.341 grams (1.591%), and ethyl acetate of 10.143 grams (47.33%), and methanol of 9.170 grams (42.79%). A phytochemical test showed that in the dechlorophyllated extract, the methanol and ethyl acetate fractions contained alkaloids, phenolics, flavonoids, and terpenoids while the n-hexane fraction contained alkaloids and flavonoids. A total of 7 grams of ethyl acetate fraction was fractionated by vacuum liquid chromatography to produce fractions B1 to B8. The B4 fraction was continued to the separation step by gravity column chromatography so that the fractions S1 to S9 were obtained. The S4 fraction was continued to the separation stage using preparative thin layer chromatography (TLC) to produce isolates S4.1 to S4.5. Isolate S4.1 was tested for purity by two-dimensional TLC showed that the isolate was not pure. The results of the phytochemical test with 5% FeCl3 spray reagent indicated a positive phenolic compound which was strengthened by FTIR characterization of the presence of –OH, -CH aromatic, -CH aliphatic, C=C, C=O and C-O goups. Based on these results, it was concluded that the isolate from the dechlorophyllated extract of Putat leaves belonged to phenolic compounds.