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AKTIVITAS ANTIOKSIDAN KOMBINASI EKSTRAK ETANOL 70% DAUN MELINJO (Gnetum gnemon L.) DAN BUAH BELIMBING WULUH (Averrhoa bilimbi L.) Faujiah, Sifa; Sumiati, Triyani; Sulastri, Lilik
PROSIDING SEMINAR KIMIA Vol 2 No 2 (2024): Prosiding SNKT III 2023
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Melinjo leaves (Gnetum gnemon L.) and Star Fruit (Averrhoa bilimbi L.) is a plant that can be used as traditional medicine. Melinjo leaves contain alkaloids, saponins, tannins, phenols, flavonoids, triterpenoids and steroids. Star fruit contains alkaloids, flavonoids and triterpenoids. These compounds function as antioxidants to counteract free radicals. The purpose of this study was to determine the secondary metabolites and determine the antioxidant activity of the combination of 70% ethanol extract of melinjo leaves and star fruit. The simplicia powder was extracted by maceration using 70% ethanol solvent, then a phytochemical test was carried out, after which the single antioxidant test and the combination of extracts were tested at a ratio of 1:3, 3:1, 1:1 with concentration series 5, 10, 20, 40, 80 ppm, the determination of antioxidants was carried out using DPPH (1,1-diphenyl-2-picrylhydrazyl) by measuring the absorbance of DPPH at a wavelength of 515 nm. The results of this study indicate that the value of IC50 for the ethanol extract of melinjo leaves was 7.86 μg/mL, the ethanol extract of star fruit was 33.70 μg/mL and the IC50 value from each combination of ethanol extract of melinjo leaves and star fruit at a ratio of 1:3 obtained 32.1 μg/mL, a ratio of 3:1 obtained 5.91 μg/mL and a ratio of 1:1 obtained 19.49 μg /mL. Based on the results of the study, it can be concluded that the antioxidant activity of the combination of 70% ethanol extract of melinjo leaves and star fruit in a ratio of 3:1 has an IC50 value the best was 5.91 μg/mL which was included in the very strong category. Keywords: Antioxidants, Melinjo Leaves, Star Fruit, Phytochemicals, DPPH

Penambatan Molekul Senyawa Swietemacrophyllanin dari Kulit Batang Mahoni (Swietenia macrophylla King,) sebagai Inhibitor Enzim Alfa Glukosidase Arini Khaerunnisa; Ratna Djamil; Lilik Sulastri; Tarso Rudiana; Partomuan Simanjuntak
Pharmaceutical and Biomedical Sciences Journal (PBSJ) Vol 5, No 2 (2023)
Publisher : UIN Syarif Hidayatullah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/pbsj.v5i2.32926

Mahogany (Swietenia macrophylla King.) is one of the plants used as an antidiabetic agent. 96% ethanol extract of S. macrophylla stem bark can inhibit the α-glucosidase enzyme. Methanol and aqueous extracts of S. macrophylla stem bark can reduce rat blood glucose levels induced by streptozotocin. Molecular docking is one of the most widely used structural-based drug design strategies due to its wide application in the analysis of binding energy and molecular interactions between drug compounds and receptors. This study aims to identify the compounds in the stem bark of S. macrophylla and analyze the molecular anchoring of the compounds produced by the aid. The research was carried out by means of the water fraction of the stem bark of S. macrophylla and was purified by column chromatography. Fraction 2 was identified by LCMS-MS. Molecular docking using AutoDock 4.2.6. The results of Fraction 2 showed the presence of catechins, evodionol, swietemacrophyllanin, swietenitin K and β-sitosterol. The results of an in-silico study showed that swietemacrophyllanin provided a better affinity than acarbose with a binding energy value of -8.57 kcal/mol and an inhibition constant of 0.52 µM. Forms hydrogen bonds with catalytic residues (Glu277 and Asp352) from the active site of the α-glucosidase enzyme. Swietemacrophyllanin has potential as an antidiabetic agent

Total Phenolics and Flavonoids Content of Pemphis acidula Leaves Extract, In Vitro Antioxidant and Antidiabetic Activity, and Characterization of The Extract Towards Standardized Antidiabetic Herbal Medicine Mardianawati, Nurlita; Sulastri, Lilik; sinaga, ernawati
Jurnal Tumbuhan Obat Indonesia Vol. 17 No. 2 (2024): December 2024
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/jtoi.v18i1.1852

Diabetes mellitus is a prevalent metabolic disorder that still remains a threat to public health all over the world. Oxidative stress is a critical factor in the pathogenesis and progression of diabetes mellitus and its associated complications. Plants contain many antioxidant compounds that can provide protection against free radical-related diseases. The present study aims to evaluate the potential of ethanol extract of Pemphis acidula leaves as antidiabetic agent by measuring its total phenolics and flavonoids content, and its antioxidant and α-amylase inhibitor activity as well. The total phenols content was determined using Follin-Ciocalteu method and total flavonoids content was determined using the AlCl3 colorimetric method, while in vitro antioxidant activity was evaluated using DPPH method. Results of the study showed that ethanol extract of Pemphis acidula leaves contains total phenolics and total flavonoids equivalent to 5390mg GAE/100 grams of extract and 581.66mg QE/100 grams of extract respectively, and it had also been proven that the extract has strong antioxidant and α-amylase inhibitor activity with IC50 of 57.71 ppm and IC50 of 70.05 ppm respectively. From these results, it can be concluded that ethanol extract of Pemphis acidula leaves has the potential as an anti-diabetic agent.

BIOPRODUKSI SENYAWA KIMIA ANTIDIABETES OLEH ISOLAT KAPANG ENDOFIT KUMIS KUCING (Orthosiphon spicatus B. B. S.) Sulastri, Lilik; Kartika, Rudi; Simanjuntak, Partomuan
PROSIDING SEMINAR KIMIA Vol 3 No 1 (2024): Prosiding SNK 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Kumis kucing plant (Orthosiphon spicatus B. B. S.) are one of the plants that have been used as diuretic, antidiabetic and antihypertensive drugs. Identification of chemical compounds, and antidiabetic activity assay of bioproduction of endophytic fungi with code B.Os.1F that isolated from the stems of kumis kucing have been carried out. Two fermentation methods (dynamic and static fermentation) to determine the pH. The tlc profile analysis and pH showed that B.Os.1F isolate by dynamic fermentation for 12 days had the potential to produce chemical compounds as antidiabetics at pH 4 ~ 6. The product of fermentation are extracted with ethyl acetate, then fractionated by column chromatography (SiO2): (i) n-hexane-ethyl acetate [10:1 ~ 1:1]; (ii) chloroform-methanol (20:1 ~ 1:1) based on “bioassay guided fractionation” with a-glucosidase enzyme inhibition assay. The isolate of B.Os.1F.2-3 had an activity of 76 %, and identify based on UV-Vis, Fourier-Transform Infra Red (FT-IR) spectroscopies and gas chromatography-mass spectrometer (GC-MS) are estimated to be Ergosta-5,7,9(11),22-tetraen-3-ol compounds. Keywords : Endophytic fungus, Orthosiphon spicatus B.B.S., α-glucosidase enzyme, ergosta-5,7,9(11),22-tetraen-3-ol.

SENYAWA KIMIA STEROL DARI KULTUR JARINGAN KELADI TIKUS (Typhonium divaricatum Decne) Lilik Sulastri; Partomuan Simanjuntak
Jurnal Ilmiah Manuntung Vol 5 No 2 (2019): Jurnal Ilmiah Manuntung
Publisher : jurnal ilmiah manuntung sekolah tinggi ilmu kesehatan samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51352/jim.v5i2.264

Keladi tikus (Typhonium divaricatum Decne) is one of Aracaceae family which a plant that’s very popular in Indonesian society because it contains anti-cancer substances. Nowadays, keladi tikus plants have been cultivated in tissue culture widely. The simplicia used in this study was keladi tikus from tissue culture which was separated into the upper part (leaves and petioles) and the bottom (tubers) dried in the sun. Dry simplicia was extracted with methanol at a temperature of 60-70 oC and the methanol extract was partitioned with ethylacetate then with n-BuOH solvents, and all extracts were tested for cytotoxic tests using the Brine Shrimp Lethality test (BSLT) method. The active fraction of ethylacetate extract, which is the tuber parts was carried out by column chromatography (SiO2; i). n-hexane: ethylacetate = 10: 1 ~ 1: 1; ethylacetate; MeOH; ii). n-hexane-ethylacetate = 5: 1) give one pure isolate. The results of identification based on Infrared (IR) spectra, and gas chromatography-mass spectra (GC-MS) are b-sitosterol which LC50 is 76.2 ppm

Total Phenolics and Flavonoids Content of Pemphis acidula Leaves Extract, In Vitro Antioxidant and Antidiabetic Activity, and Characterization of The Extract Towards Standardized Antidiabetic Herbal Medicine Mardianawati, Nurlita; Sulastri, Lilik; sinaga, ernawati
Jurnal Tumbuhan Obat Indonesia Vol. 17 No. 2 (2024): December 2024
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/jtoi.v18i1.1852

Diabetes mellitus is a prevalent metabolic disorder that still remains a threat to public health all over the world. Oxidative stress is a critical factor in the pathogenesis and progression of diabetes mellitus and its associated complications. Plants contain many antioxidant compounds that can provide protection against free radical-related diseases. The present study aims to evaluate the potential of ethanol extract of Pemphis acidula leaves as antidiabetic agent by measuring its total phenolics and flavonoids content, and its antioxidant and α-amylase inhibitor activity as well. The total phenols content was determined using Follin-Ciocalteu method and total flavonoids content was determined using the AlCl3 colorimetric method, while in vitro antioxidant activity was evaluated using DPPH method. Results of the study showed that ethanol extract of Pemphis acidula leaves contains total phenolics and total flavonoids equivalent to 5390mg GAE/100 grams of extract and 581.66mg QE/100 grams of extract respectively, and it had also been proven that the extract has strong antioxidant and α-amylase inhibitor activity with IC50 of 57.71 ppm and IC50 of 70.05 ppm respectively. From these results, it can be concluded that ethanol extract of Pemphis acidula leaves has the potential as an anti-diabetic agent.

Qualitative Profiling of Antimalarial Compounds from Endophytic Fungi Associated with Rhizophora mucronata Suhendar, Usep; Fawziah, Rieskha; Lohita Sari, Bina; Yoshida Srie Rahayu, Sata; Sulastri, Lilik; Wulandari, Ratna; Anisa, Dede; Namira, Raisa
Sains Natural: Journal of Biology and Chemistry Vol. 15 No. 3 (2025): Sains Natural
Publisher : Universitas Nusa Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31938/jsn.v15i3.816

Malaria remains one of the deadliest infectious diseases worldwide, underscoring the urgent need for novel antimalarial sources. Endophytic fungi associated with mangrove roots of Rhizophora mucronata represent promising candidates, as they are capable of synthesizing secondary metabolites such as alkaloids, flavonoids, and terpenoids with known antiplasmodial activity. This study aimed to qualitatively identify antimalarial bioactive compounds from endophytic fungal extracts previously exhibiting the highest heme polymerization–inhibition activity. Fungal isolates were fermented in liquid medium for 21 days and extracted with ethyl acetate. The extracts were profiled by Thin-Layer Chromatography (TLC) using two solvent systems: n-hexane : ethyl acetate (5:1) and dichloromethane : methanol (10:1). Band visualization was performed under UV light (254 nm and 366 nm) and with semi-specific reagents (Dragendorff and citro-boric), followed by Rf value comparison. TLC analysis revealed blue-green fluorescent bands corresponding to flavonoids and brown-orange bands indicative of alkaloids, with optimal Rf values of 0.46 (n-hexane : ethyl acetate) and 0.54 (dichloromethane : methanol). These findings confirm the presence of key antimalarial compound classes in the endophytic fungal extract, supporting its potential as a coastal bioresource for drug discovery and development.

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