scholarly journals Identification and antioxidant activity test of bioactive compound produced from ethanol extract of temukunci (Boesenbergia rotunda)

2017 ◽  
Author(s):  
Sri Atun ◽  
Sri Handayani ◽  
Luthfi Fitri Frindryani
Keyword(s):  
Antioxidant Activity ◽  
Ethanol Extract ◽  
Bioactive Compound ◽  
Activity Test ◽  
Boesenbergia Rotunda

scholarly journals Isolation of Ferulic Acid from Leaves of Mindi (Melia azedarach L.) and Its Antioxidant Activity Test

2018 ◽  
Vol 3 (1) ◽  
pp. 30
Author(s):  
Andriyani Budi Listyo ◽  
Dewi Kusrini ◽  
Enny Fachriyah
Keyword(s):  
Antioxidant Activity ◽  
Ferulic Acid ◽  
Phenolic Acid ◽  
Acid Content ◽  
Ethanol Extract ◽  
Bioactive Compound ◽  
Base Hydrolysis ◽  
Melia Azedarach ◽  
Dpph Radical ◽  
Activity Test

<p>Mindi (<em>Melia azedarach </em>L.) is one of a plant from <em>Meliaceae </em>family and has been known for its bioactive compound, such as ferulic acid. On this study, the isolation of ferulic acid and antioxidant activity test has been conducted. The aim of this study was to isolate the ferulic acid on ethanol extract of <em>Melia azedarach </em>L. leaves, determine the ferulic acid content and antioxidant activity test qualitatively. The method used in this research was isolation with hydrolysis (acid and base) and without hydrolysis, determining the phenolic acid content using TLC scanner instrument and antioxidant activity test qualitatively using DPPH radical reduction method. According to the identification using TLC and TLC scanner, the base hydrolysis fraction (HB), acid hydrolysis (HA), and without hydrolysis (HA) of ethanol extract from <em>Melia azedarach </em>L. was suspected contain the ferulic acid compound. The analysis result using TLC scanner was known to have ferulic acid content on HB, HA, and TH fraction of 15.57%,12.17%, and 9.56%, respectively. This study showed that hydrolysis affected the phenolic acid content where the HB fraction produced higher ferulic acid than HA and TH fraction. The antioxidant activity test that has been conducted qualitatively showed that ferulic acid isolates contained on each fraction actively reduce the DPPH radical.</p>

Antioxidant Activity, Inhibition α-Glucosidase of Ethanol Extract of Strychnos nitida G. Don and Identification of Active Compounds

2019 ◽  
Vol 5 (3) ◽  
pp. 11-20
Author(s):  
Stefani Dhale Rale ◽  
Hasim Hasim ◽  
Syamsul Falah
Keyword(s):  
Antioxidant Activity ◽  
Ethyl Acetate ◽  
Ethanol Extract ◽  
Ethyl Acetate Fraction ◽  
Inhibition Activity ◽  
Active Compounds ◽  
Activity Inhibition ◽  
Activity Test ◽  
Ic50 Value ◽  
Treatment Of Diabetes

This study aims to find the treatment of diabetes using natural materials by exploring plants in the province of East Nusa Tenggara. his research was conducted out by extracting the Strychnos nitida G.Don stem using a method of maceration by ethanol 70%. Ethanol extract was then fractionated using n-hexane and ethyl acetate. Simplicia from maceration and fractionation results were then tested for antioxidant activity, α-glucosidase inhibition activity and identification of active compounds. The results showed that ethyl acetate fraction had the lowest IC50 value of 86.83 μg / ml. Results of the α-glucosidase activity test showed that ethyl acetate fraction and n-heksan fraction at 900 ppm had the highest percentage of inhibition of 34.23% and 33.89%. Identification using LCMS/MS method showed that ethyl acetate fraction consist of Benzenemethamine, N, N-dioctyl- as an antioxidantcompound and compound 24-methyl-5-cholestone-hexol as an antidiabetic compound. From the results of this study, we concluded that the extract of kayu ular Strychnos nitida G.Don stem has inhibition activity toward α-glucosidase enzyme.

scholarly journals Aktivitas Antioksidan Ekstrak Etanol Daun Ganitri (Elaeocarpus Ganitrus Roxb.) dengan Metode DPPH (2,2 Difenil-1-Pikrilhidazil)

2021 ◽  
Vol 18 (1) ◽  
pp. 60-67
Author(s):  
Naelaz Zukhruf Wakhidatul Kiromah ◽  
Sadam Husein ◽  
Titi Pudji Rahayu
Keyword(s):  
Antioxidant Activity ◽  
Free Radicals ◽  
Leaf Extract ◽  
Ethanol Extract ◽  
Antioxidant Compounds ◽  
Synthetic Antioxidant ◽  
Activity Test ◽  
Impaired Liver ◽  
Ic50 Value ◽  
Dpph Method

Free radicals are one of the cause of various diseases. The use of synthetic antioxidant compounds could prevent the effect of the free radicals, however may cause adverse effects on the human body such as impaired liver, lung, intestinal and poisoning. Therefore antioxidant from natural resources needs to be developed. The purpose of this research was to determine the antioxidant activity and IC50 value of the ethanol extract of ganitri (Elaeocarpus ganitrus Roxbs.) leaves. Ganitri leaf ethanol extract activity test was carried out using DPPH method with vitamin C as a standard. Antioxidant activity was determined as a decreas in the absorbance of DPPH at 517 nm wavelength after an addition of the extract with the concentrations of 20, 40, 80, and 100 ppm. The antioxidant acitivity measurement of the ganitri leaf extract showed that the linier regression equation obtained was y = 0.3669x + 29.546, r = 0.4573 while the IC50 value was 54,12 ppm. Based on the result, it is concluded that the ethanol extract of ganitri (Elaeocarpus ganitrus Roxb.) leaf showed was categorized as strong antioxidant.

scholarly journals AKTIVITAS ANTIOKSIDAN EKSTRAK TUMBUHAN PAKU EKOR KUDA (Equisetum debile L.) TERHADAP PEROKSIDASI LIPID PLASMA DARAH MENCIT (Mus musculus)

2017 ◽  
Vol 4 (1) ◽  
pp. 48
Author(s):  
Riana Dyah Suryaningrum ◽  
Ni Made Puspawati ◽  
Ni Putu Adriani Astiti
Keyword(s):  
Antioxidant Activity ◽  
Statistical Analysis ◽  
Free Radical ◽  
Blood Plasma ◽  
Mus Musculus ◽  
Radical Scavenging ◽  
Ethanol Extract ◽  
Free Radical Scavenging ◽  
Activity Test ◽  
Dpph Method

The purpose of this research was to study the antioxidant activity from ethanol extract of horstail (Equisetum debile L.) in the free radical scavenging in mice blood plasma. The antioxidant activity test was conducted with the DPPH method and measuring the MDA concentration in mice blood. The antioxidant activity test with the DPPH results showed that the ethanol extract of horstail (Equisetum debile L.) had the antioxidant activity of IC50 which was 1.604 mg/mL or 1,604 ppm. The statistical analysis result of the MDA blood plasma in mice with various doses (125 mg/kgBM, 250 mg/kgBM, 375 mg/kgBM and 500 mg/kgBM) showed that the 500 mg/kgBM dose extract was able to reduce the MDA concentration in mice blood which given the most amount of exercise.

AKTIVITAS ANTIOKSIDAN EKSTRAK UMBI SUWEG (Amorphophallus paeoniifolius) DARI BERBAGAI TINGKAT POLARITAS PELARUT

KOVALEN ◽  
2016 ◽  
Vol 2 (1) ◽  
Author(s):  
Deddy Firman ◽  
Nurhaeni Nurhaeni ◽  
Ahmad Ridhay
Keyword(s):  
Antioxidant Activity ◽  
Vitamin C ◽  
Ethyl Acetate ◽  
Polar Solvent ◽  
Ethanol Extract ◽  
Hexane Extract ◽  
Activity Test ◽  
Ic50 Value ◽  
Tuber Type

ABSTRACT Has done research about antioxidant activity of suweg tuber (Amorphophallus campamulatus) based on the level of polar solvent. This research begins with in phased maceration extraction using n-hexane, ethyl acetate dan ethanol. Next step was antioxidant activity test with tyocyanate to n-hexane extract and DPPH methods to ethanol extract, ethyl acetate and vitamin C. The result showed antioxidant activity in n-hexane extract i.e. 14,96 %, end 77,13 % BHT while in ethyl acetate, ethanol and vitamin C reached IC50 value are 458,102 ppm, 223,268 ppm dan 26,76 ppm. Keywords: Suweg tuber, type of solvent, maceration, antioxidant

scholarly journals Isolation of Flavonoid Compounds from Eceng Gondok (Eichhornia crassipes) and Antioxidant Tests with DPPH (1,1-Diphenyl-2-Picrylhydrazyl) Method

2018 ◽  
Vol 21 (4) ◽  
pp. 187-192 ◽  
Author(s):  
Kautsar Elvira ◽  
Enny Fachriyah ◽  
Dewi Kusrini
Keyword(s):  
Antioxidant Activity ◽  
Water Hyacinth ◽  
Eichhornia Crassipes ◽  
Preparative Thin Layer Chromatography ◽  
Ethanol Extract ◽  
Basic Structure ◽  
Flavonoid Compounds ◽  
Activity Test ◽  
Dpph Method ◽  
Layer Chromatography

The research had been conducted of the isolation of flavonoid compounds from water hyacinth plants (Eichhornia crassipes) and antioxidant activity test by DPPH (1,1-diphenyl-2-picrylhydrazyl) method. This research starts from maceration of water hyacinth with ethanol solvent. Ethanol extract was hydrolyzed with HCl. Flavonoid separation is carried out by column chromatography and preparative thin layer chromatography. The obtained isolates were analyzed by UV vis spectrophotometer and FTIR spectrophotometer. Antioxidant activity was carried out by DPPH method. Flavonoid isolates were obtained as heavy as 4.5 mg (0.006%). The results of the analysis of flavonoid isolates A4a with UV vis spectrophotometer appear at a wavelength of 368 nm (band I) and 260 nm (band II). The results of the analysis with FTIR shown that the isolates had functional groups O-H, aliphatic C-H, CH3, C =O, aromatic C = C, and C-O ether, it was suspected that flavonoid isolates had a basic structure of quercetin 7-methyl ether compounds. The results of antioxidant activity test of flavonoid isolates shown IC50 price of 254.66 mg / L

scholarly journals PENENTUAN AKTIVITAS TABIR SURYA DAN ANTIOKSIDAN EKSTRAK ETANOL BENALU (Henslowia frutescens) INANG JERUK BALI SECARA IN VITRO

2021 ◽  
Vol 6 (1) ◽  
pp. 124-132
Author(s):  
Rusdiati Helmidanora ◽  
◽  
Henny Nurhasnawati ◽  
Yullia Sukawaty ◽  
Andri Priyoherianto ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Ethanol Yield ◽  
Ethanol Extract ◽  
Parasitic Plant ◽  
Phytochemical Screening ◽  
Activity Test ◽  
Measurement Results ◽  
High Antioxidant Activity ◽  
Yield Calculation

Henslowia frutescens is a semi-parasitic plant, although considered harmful, it has medicinal and cosmetic potential. This plant has secondary metabolite compounds, namely phenolic compounds, flavonoids, saponins, tannins, and steroids which have high antioxidant activity. The purpose of this study was to determine the sunscreen activity of the ethanol extract of Henslowia frutescens based on the in vitro SPF (Sun Protecting Factor) value and to determine its antioxidant activity. The research stages included sampling, sampling, maceration extraction with 95% ethanol, yield calculation, phytochemical screening, sunscreen activity test based on SPF value, and antioxidant activity test. Data analysis was carried out descriptively based on the measurement results processed according to the calculation formula. The results showed that the sunscreen activity of the ethanol extract of Henslowia frutescens based on the in vitro SPF value was 14.57 - 25.20 with moderate protection category. The antioxidant activity of the ethanol extract of Henslowia frutescens showed a very strong category with an IC value of 22.82 ± 1.33.

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