scholarly journals Antioksidan Daun Kumpai Mahung (Eupathorium inulifolium H.B&K)

2021 ◽  
Vol 8 (1) ◽  
pp. 94
Author(s):  
Dwi Rizki Febrianti ◽  
Rakhmadhan Niah ◽  
Novia Ariani
Keyword(s):  
Antioxidant Activity ◽  
Free Radicals ◽  
Secondary Metabolites ◽  
Traditional Medicine ◽  
Leaf Extract ◽  
Methanol Extract ◽  
Endemic Plants ◽  
Ic50 Value ◽  
Dpph Method

Daun Kumpai Mahung (Eupathorium inulifolium H.B & K) merupakan salah satu tumbuhan endemik Kalimantan Selatan. Secara turun temurun digunakan sebagai obat tradisional Dayak Meratus sebagai obat diare, demam, dan malaria. Tanaman ini dicurigai memiliki nilai antioksidan tinggi karena mengandung metabolit skunder fenolik. Tujuan penelitian ini untuk mengetahui aktivitas antioksidan ekstrak metanol daun E. inulifolium serta nilai IC50-nya. Penelitian ini menggunakan metode DPPH dengan instrumen spektofotometri UV-vis dengan panjang gelombang 517 nm. Dari hasil perhitungan dan replikasi nilai IC50 yang didapat sebesar 38,9 ppm. Ekstrak daun E. inulifolium memiliki aktivitas antioksidan yang sangat kuat dalam meredam radikal bebas. Kata Kunci: Daun, Potensi Antioksidan, Endemik, IC50, Ekstrak Etanol, Fenolik Kumpai Mahung (Eupathorium inulifolium H.B & K) leaves are one of the endemic plants of South Kalimantan. From generation to generation it is used as a traditional medicine for Dayak Meratus as a medicine for diarrhea, fever, and malaria. This plant is suspected of having high antioxidant value because it contains phenolic secondary metabolites. The purpose of this study was to determine the antioxidant activity of the methanol extract of E. inulifolium leaves and its IC50 value. This study used the DPPH method with spectophotometer UV-vis instrument at wavelength of 517 nm. From the calculation and replication, the IC50 value obtained is 38.9 ppm. E. inulifolium leaf extract has very strong antioxidant activity in reducing free radicals. 

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.

Antioxidant and Anti-Melanogenic Activities of Pakoba Leaves (Syzygium sp) from North Celebes

2019 ◽  
Vol 2 (2) ◽  
pp. 79-83
Author(s):  
Dela Rosa ◽  
Catherine Roeroe ◽  
Agustina Susanti
Keyword(s):  
Antioxidant Activity ◽  
Crude Extract ◽  
Leaf Extract ◽  
Methanol Extract ◽  
Chloroform Fraction ◽  
Aqueous Fraction ◽  
Ic50 Value ◽  
Dpph Method ◽  
Good Potential ◽  
Crude Methanol Extract

In this research the potential of Pakoba leaf extract to be used as antioxidant and skin whitening (anti-melanogenic agent) is investigated. The antioxidant activity of Pakoba leaves were studied using DPPH method and the result showed that the 80 percent methanol crude extract has strong antioxidant activity with an IC50 value of 22.66 ± 1.02 μg/ml. The aqueous fraction of the sample has an IC50 value of 53.30 ± 1.42 μg/ml, followed by n-butanol fraction (53.63 ± 1.45 μg/ml) and chloroform fraction (511.54 ± 1.59 μg/ml). The anti-melanogenic activity of the crude methanol extract showed IC50 value of 316.56 ± 11.04 μg/ml. Thus, it isconcluded that crude extract of Pakoba leaves shows good potential as the antioxidant source although it does not show good anti- melanogenic activity.

scholarly journals ANTIOXIDANT ACTIVITY OF METHANOL EXTRACT NATUNA MARINE SPONGE (PORIFERA) WITH DPPH METHODE

2021 ◽  
pp. 109-112
Author(s):  
DELLADARI MAYEFIS ◽  
SRI HAINIL ◽  
SISKA WIDIASTUTI
Keyword(s):  
Antioxidant Activity ◽  
Secondary Metabolites ◽  
Marine Sponge ◽  
Methanol Extract ◽  
Marine Animal ◽  
Phytochemical Content ◽  
Ic50 Value ◽  
Dpph Method ◽  
Wide Range ◽  
Measured Absorption

Objective: Natuna sponge is a marine animal that contains a wide range of secondary metabolites that can be utilized in the field of pharmacy. The research aims to test the phytochemical content and antioxidant activity of the Natuna methanol marine sponge extract. Sample extraction is done by the maceration method with methanol solvent. Methods: Phytochemical tests include alkaloid testing, flavonoids, steroids, saponins, and tannins. Test antioxidant activity using the immersion DPPH method (1.1-diphenyl-2-picryl hydroxyl) measured absorption at a wavelength of 517 nm. Results: The phytochemical test results showing the sponge of Natuna contain secondary metabolites including alkaloids, flavonoids, steroids, saponins, and tannins. Conclusion: This Natuna sponge methanol extract has an antioxidant activity that is very strong with an IC50 value of 52.91 ppm, and the comparator used is Vitamin C with an IC50 value of 43,51 ppm.

scholarly journals Limpasu Pericarpium : an Alternative Source of Antioxidant From Borneo with Sequential Maceration Method

2021 ◽  
Vol 15 (1) ◽  
Author(s):  
Irfan Zamzani ◽  
Nita Triadisti
Keyword(s):  
Antioxidant Activity ◽  
Free Radicals ◽  
Ethyl Acetate ◽  
Methanol Extract ◽  
Oxidation Process ◽  
Antioxidant Activities ◽  
Alternative Source ◽  
Dpph Method ◽  
Indigenous Plant ◽  
Ic50 Values

Antioxidants are substances that can slow down the oxidation process of free radicals. Limpasu plant (Baccaurea lanceolata (Miq) Muell. Arg), an indigenous plant of Borneo, is a natural antioxidant source. The purpose of this study was to determine the antioxidant activity of the limpasu pericarpium extract. The extraction of the limpasu pericarpium was done by maceration method using solvents with increasing polarity ranging from n-hexane, ethyl acetate, and methanol. Antioxidant activities of the three extracts were measured by the DPPH and FRAP methods. The IC50 values of n-hexane, ethyl acetate, and methanol extracts, as well as quercetin using the DPPH method were 517,45 µg/mL, 530,64 µg/mL, 10,63 µg/mL and 6,83 µg/mL, respectively. Meanwhile, the IC50 values obtained from FRAP method were 198,96 µg/mL, 190,07 µg/mL, 661,36 µg/mL, and 7,09 µg/mL, respectively. The results revealed that the methanol extract is more potent than other extracts tested for antioxidant activity.

scholarly journals Aktivitas Antioksidan Ekstrak Metanol Daun Alpukat Menggunakan Metode DPPH

2021 ◽  
Vol 11 (2) ◽  
pp. 104-110
Author(s):  
Alfin Surya ◽  
Zaiyar Nazir ◽  
Anggun Syazulfa
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Free Radicals ◽  
Methanol Extract ◽  
Natural Antioxidants ◽  
Positive Control ◽  
Phytochemical Screening ◽  
Bioactive Components ◽  
Ic50 Value ◽  
Ic50 Values

Free radicals are molecules that lose electrons in their outer orbitals so that the number of electrons becomes odd and unstable. Free radicals can damage various macromolecule cells including proteins, carbohydrates, fats. Antioxidants are compounds that can donate one or more electrons to free radicals. Avocado leaves contain high bioactive components that can be used as a source of natural antioxidants. Avocado leaves that have been dried, mashed and then shifted with methanol. The extracts were tested by phytochemical screening, including flavonpoid, phenolic, tannin and antioxidant activity using the DPPH (2,2-diphenyl-1-picrylhidrazyl) method. This method is based on the reduction of 2,2-diphenyl-1-picrylhydrazyl (DPPH) against free radicals which causes a change from purple to yellow 2,2-diphenyl-1-picrylhydrazyl) (DPPH). From the research, the IC50 values ​​in avocado leaves were 118.8056 µg / mL and 7,276 µg / mL on ascorbic acid as a positive control. From the IC50 value obtained, it is known that the methanol extract of avocado leaves has strong antioxidant activity to fight free radicals.

scholarly journals Phytochemistry and Antioxidant Activities of the Methanolic Leaf Extract of Clerodendrum splendens (Lamiaceae)

2018 ◽  
pp. 12-20
Author(s):  
Nganso Ditchou Yves Oscar ◽  
Amang A Ngoung GA ◽  
Soh Desire ◽  
Simo Nemg Fredy Brice ◽  
Nyasse Barthelemy
Keyword(s):  
Antioxidant Activity ◽  
Natural Products ◽  
Secondary Metabolites ◽  
Vitamin C ◽  
Leaf Extract ◽  
Antioxidant Activities ◽  
Maximum Activity ◽  
Hepatic Lipids ◽  
Ic50 Value ◽  
Ic50 Values

This paper aimed at studying the antioxidant efficacy of the methanolic leaf extract of Clerodendrum splendens, a plant of the Lamiaceae family. Phytochemical tests carried out on extracts of Clerodendrum splendens leaves have been able to detect the presence of secondary metabolites such as Flavonoids, Tannins, Saponins and Terpenoids. The results of the antioxidant activity have shown that CSF2, CSF3 fractions and CSB, CSG fractions similarly inhibited hepatic lipids but significantly less than vitamin C. Compared to all fractions, the CSB fraction shows the best inhibitor on the peroxidation of hepatic lipids because at 150 μg/mL, there is a maximum activity (2.5 μg/mL of protein). However, it is found that CSF3, CSF2 and CSG have higher IC50 values than vitamin C (5.613±0.117) while CSEB, CSB and CSC fractions showed lower IC50 values than vitamin C, which is used as the reference reducing compound. The lower the IC50 value compared to vitamin C, the greater the antioxidant capacity of the plant extract. The results of this study suggest that Clerodendrum splendens represents an untapped source of compounds with potential antioxidant activity that could be explored in the development of new therapeutic natural products.

scholarly journals POTENSI EKSTRAK ETANOL DAUN ANDONG MERAH (Cordyline fruticosa (L.) A. Cheval) SEBAGAI ANTIOKSIDAN PENANGKAL RADIKAL DPPH

2021 ◽  
Vol 4 (1) ◽  
pp. 24
Author(s):  
Yuri Pratiwi Utami
Keyword(s):  
Antioxidant Activity ◽  
Free Radicals ◽  
Vitamin C ◽  
Leaf Extract ◽  
Radical Scavenging ◽  
Chemical Compounds ◽  
Antioxidant Potential ◽  
Traditional Medicinal Plants ◽  
Ic50 Value ◽  
Cordyline Fruticosa

AbstractAndong leaf is one of the traditional medicinal plants that is proven to have various properties including as a (natural) medicinal ingredient. Andong plants contain several chemical compounds including saponins, tannins, flavonoids, polyphenols, steroids. The purpose of this study was to determine the potential of red andong leaf extract (Cordyline fruticosa (L.) A. Cheval) as a radical scavenging antioxidant for DPPH. In this study red andong leaves (Cordyline fruticosa (L.) A. Cheval) were extracted using maceration method with 70% ethanol as solvent. The results showed that anthocyanins were cyanidin. Antioxidant activity was measured by reducing DPPH free radicals with UV-Vis spectrophotometry at a wavelength of 517 nm. The results showed that red andong red leaf extract had strong antioxidant potential with an IC50 value of 64.5197 g/mL against free radicals DPPH and vitamin C as a comparison showed a very strong antioxidant potential with an IC50 value of 2.12 g/mL.Keywords : Andong leaf, antioxidant, DPPH AbstrakDaun andong merupakan salah satu tanaman obat tradisional yang terbukti memiliki berbagai khasiat diantaranya sebagai bahan obat (alami). Tanaman andong mengandung beberapa senyawa kimia diantaranya yaitu saponin, tanin, flavonoid, polifenol, Steroida. Tujuan dari penelitian ini adalah untuk mengetahui potensi  ekstrak daun andong merah (Cordyline fruticosa (L.) A. Cheval) sebagai antioksidan penangkal  radikal DPPH. Pada penelitian ini daun andong merah (Cordyline fruticosa (L.) A. Cheval) diekstraksi dengan menggunakan metode maserasi dengan pelarut etanol 70%. Hasil penelitian menunjukkan  antosianin jenis  sianidin. Aktivitas antioksidan diukur melalui peredaman radikal bebas DPPH dengan spektrofotometri UV-Vis pada panjang gelombang 517 nm. Hasil Penelitian menunjukkan ekstrak daun andong merah   memiliki potensi  antioksidan  kuat dengan nilai IC50 64.5197 µg/mL terhadap radikal bebas  DPPH dan vitamin C sebagai pembanding menunjukkan potensi antioksidan sangat kuat dengan nilai  IC50 2.12 µg/mL.Kata Kunci : Daun andong merah, antioksidan, DPPH

scholarly journals Antioxidant activity of extracted green algae silpau (Dyctyosphaeria versluysii)

2019 ◽  
Vol 11 (2) ◽  
Author(s):  
ENDANG S SRIMARIANA ◽  
DAN APITULEY
Keyword(s):  
Antioxidant Activity ◽  
Free Radicals ◽  
Green Algae ◽  
Standard Method ◽  
Nutritional Value ◽  
Methanol Extract ◽  
Traditional Food ◽  
Phytochemical Content ◽  
Comprehensive Information ◽  
Ic50 Value

Abstract. Srimariana ES, Apituley DAN. 2019. Antioxidant activity of extracted green algae silpau (Dyctyosphaeria versluysii). Nusantara Bioscience 11: 153-156. Silpau (Dictyosphaeria versluysii) is a green algae that is widely available in Southwest Moluccas regency, living on coral reefs and not classified as seasonal plants. Silpau has long been used by local people, generally in the form of processed vegetables or colo-colo (traditional food). Except for its nutritional value, comprehensive information about silpau still unknown. Therefore, this study was carried out to determine its potential as an antioxidant. The phytochemical content of silpau was analyzed according to the standard method. The antioxidant activity of green algae silpau extract was carried out by reducing DPPH (1,1-diphenyl-2-picrylhydrazyl) free radicals. Phytochemical test of silpau revealed that silpau contain terpenoid compounds. The result of the study showed that the IC50 value of methanol extract of silpau was 547.97 ppm, indicated that silpau methanol extract categorized as a weak antioxidant.

AKTIVITAS ANTIOKSIDAN DAN FLAVONOID EKSTRAK BIJI KURMA

EKOLOGIA ◽  
2020 ◽  
Vol 19 (1) ◽  
pp. 34-38
Author(s):  
Siti Warnasih ◽  
Diana Widiastuti ◽  
Uswatun Hasanah ◽  
Laksmi Ambarsari ◽  
Purwantiningsih Sugita
Keyword(s):  
Antioxidant Activity ◽  
Ethyl Acetate ◽  
Methanol Extract ◽  
Soxhlet Extraction ◽  
Ethyl Acetate Fraction ◽  
Positive Control ◽  
Palm Fruit ◽  
Ic50 Value ◽  
Dpph Method ◽  
Fruit Processing

Date seeds are waste from palm fruit processing that has not been utilized optimally. Date seeds contain flavonoids which are known to act as antioxidants. The aim of this study was to determine the antioxidant activity and flavonoid of methanol extract which was carried out by soxhletation and its fractionation results. Date seeds are made into simplicia, soxhlet extraction with methanol, then the methanol extract is fractionated in stages by liquid-liquid partition with n-hexane, ethyl acetate, and n-butanol. Each fraction and extract was determined by its antioxidant activity with the DPPH method and its flavonoid was determined by spectrophotometry. Ethyl acetate fraction has the strongest antioxidant activity with the lowest IC50 value, that is equal to 5.74 ± 0.05μg/mL, followed by methanol extract of 9.55±0.53 μg/mL, n-butanol fraction 19.73±0,58 μg/mL, and n-hexane fraction of 289.59±10.52 μg/mL, while the IC50 value for vitamin C as a positive control was 4.29±0.74 μg/mL. The highest flavonoids were produced from ethyl acetate fractions which amounted to 1484.33 ± 161.47 mg Quercetin Equivalent (QE) / 100 g, followed respectively by methanol extract of 282.84±13.72 mg QE/100 g.

scholarly journals The Antioxidant Activity of Pagoda Flower (Clerodendrum paniculatum L.) Ethanol Extract using Visible Spectrophotometric Method

2019 ◽  
Vol 2 (2) ◽  
pp. 14-19
Author(s):  
Ihsanul Hafiz ◽  
Mandike Ginting ◽  
Yuermaileni Yuermaileni
Keyword(s):  
Antioxidant Activity ◽  
Traditional Medicine ◽  
Plant Species ◽  
Spectrophotometric Method ◽  
Ethanol Extract ◽  
Number Of Species ◽  
Ic50 Value ◽  
Dpph Method ◽  
Vit C

Abstract. Pagoda flower is one of the plant species included in the genus Clerodendrum which has a number of different species of 580 species, and is spread evenly in Asia, Africa, America, and Australia. A number of species of this genus have been used in traditional medicine in Asia and Africa. India, China, Korea, Thailand and Japan. The antioxidant activity of this plant is known to be very strong, so in this article the antioxidant activity of the flower part of the Clerodendrum paniculatum L. species will be described. The ability of antioxidant activity was measured by the DPPH method (1,1-diphenyl-2-picrylhydrazyl) which was measured using a Visible spectrophotometer using Vit C as a comparison. The results showed that the ethanol extract of pagoda flowers has antioxidant activity with an IC50 value of 64.889 ppm (strong). The Vit C comparison has an IC50 value of 8.539 ppm (very strong). Keyword: Antioxidant, Clerodendrum Paniculatum L., Visible Spectrophotometric. Abstrak. Bunga Pagoda merupakan salah satu spesies tanaman yang termasuk dalam genus Clerodendrum yang memiliki jumlah spesies yang berbeda sejumlah 580 spesies, dan tersebar merata di Asia, Afrika, Amerika, dan Australia. Sejumlah spesies dari genus ini telah digunakan dalam pengobatan tradisional di kawasan Asia dan Afrika. India, China, Korea, Thailand, dan Jepang. Aktivitas antioksidan dari tanaman ini diketahui  sangat kuat, sehingga dalam artikel ini akan dipaparkan aktivitas antioksidan yang dimiliki oleh ekstrak etanol bagian bunga dari spesies Clerodendrum paniculatum L. Pengujian aktivitas antioksidanya dilakukan dengan metode DPPH (1,1-diphenyl-2-picrylhydrazyl) yang diukur menggunakan spektrofotometer Visibel dengan menggunakan Vit C sebagai pembanding. Hasil penelitian menjukkan bahwa ekstrak etanol bunga pagoda memiliki aktivitas antioksidan dengan nilai IC50 sebesar 64,898 ppm (kuat). Pembanding Vit C memiliki nilai IC50 sebesar  8,539 ppm (sangat kuat). Kata Kunci: Antioksidan, Clerodendrum paniculatum L., DPPH, Spektrofotometri Vis.

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