UJI AKTIVITAS ANTIOKSIDAN SENYAWA PIRAZOLIN 3-(2- METOKSI-FENIL)-5-NAFTALEN-1-IL-4,5-DIHIDRO-1H-PIRAZOL

Pyrazoline compounds are reported to have many useful biological activities such as antimicrobials, antihyperglycemia, antioxidants, anti-inflammatory, anticancer and anticonvulsants. The pyrazoline analogues of 3- (2-methoxy-phenyl) -5-naphthalene-1-yl-4,5-dihydro-1H-pyrazol were synthesized usingglacial acetic acid as catalyst and assisted by microwave irradiation. The structures of the compounds were obtainedby UV, IR and HRMS spectroscopy data. Antioxidant activity test using DPPH method showed that pyrazoline compound had IC50 value of 27.41 μg/mL.

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Ekstraksi Protein dari Rhodophyta dan Chlorophyta Dari Perairan Pulau Pari Sebagai Alternatif Antioksidant

Jurnal Jaring SainTek ◽

10.31599/jaring-saintek.v1i1.186 ◽

2020 ◽

Vol 1 (1) ◽

pp. 24-31

Author(s):

Elvi Kustiyah ◽

Bungaran Saingin ◽

Hernowo Widodo ◽

Viriya Piti

Keyword(s):

Antioxidant Activity ◽

Low Temperature ◽

Protein Content ◽

Green Algae ◽

Red Algae ◽

Marine Resources ◽

Activity Test ◽

Ic50 Value ◽

Dpph Method ◽

Lowry Method

Indonesia has millions island and big part of Indonesia is sea that is rich in marine biological resources and has the potential to be developed and optimized. One of the abundant marine resources in Indonesia is algae. Algae are plant-like protists. Algae have several important compounds, including protein, carbohydrates, fats, minerals and other useful elements. Proteins contained in algae have the potential to be used as antioxidants. In this study, the levels of protein in red and green algae were tested by using the lowry method and testing the antioxidant activity of red and green algae extracts using the Diphenylpicrylhydrazyl (DPPH) method. Algae extraction was done by maceration, which is soaking the sample in low temperature with phosphate buffer saline (PBS) pH 7. From the extraction results it can be concluded that the red algae (Rhodophyta) has the highest protein content of 5.115 ± 0.126% and the lowest protein content in green algae (Chloropytha) as big as 1.686 ± 0.430%. And from the results of the antioxidant activity test showed that all positive algae showed antioxidant activity but the green algae (Chlorophyta) had the highest antioxidant activity of 71.5946 ± 0.01612% with IC50 value 1.6114.

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Aktivitas Antioksidan Ekstrak Etanol Buah, Daun, Batang Dan Rimpang Pada Tanaman Wualae (Etlingera Elatior (Jack) R.M Smith)

Jurnal Farmasi Galenika (Galenika Journal of Pharmacy) ◽

10.22487/j24428744.2019.v5.i2.13671 ◽

2019 ◽

Vol 5 (2) ◽

pp. 189-197 ◽

Cited By ~ 1

Author(s):

Asriullah Jabbar ◽

Wahyuni Wahyuni ◽

Muh Hajrul Malaka ◽

Apriliani Apriliani

Keyword(s):

Antioxidant Activity ◽

Vitamin C ◽

Typhoid Fever ◽

Skin Diseases ◽

Activity Test ◽

Ic50 Value ◽

Dpph Method ◽

Ic50 Values ◽

Ethanol Extracts ◽

Etlingera Elatior

Wualae (Etlingera elatior (Jack) R.M Smith) is one of the plants in the Zingiberaceae family, widely used in medicine ranging from rhizomes, fruits, and flowers. Empirically Wualae are usually used by people for treating skin diseases, flavoring food, a natural soap, and in Southeast Sulawesi, it is used to treat typhoid fever. This study aims to examine the antioxidant activity of Wualae (Etlingera elatior) plant. The plant extracts were extracted by maceration method, antioxidant activity test was performed by 2,2-Diphenyl-1-picrylhydrazyl (DPPH) method. The results showed that ethanol extracts of fruits, leaves, stems and rhizomes of Wualae (Etlingera elatior) has the potential antioxidant activity with the IC50 values of 72.518 mg/L, 99.890 mg/L, 52.345 mg/L and 58.638 mg/L, respectively. and Vitamin C has IC50 value of 3,787 mg/L.

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UJI AKTIVITAS ANTIOKSIDAN DAN PENENTUAN TOTAL KANDUNGAN FENOLIK EKSTRAK ETANOL DAUN NANAMUHA (Bridelia monoica Merr)

PHARMACON ◽

10.35799/pha.9.2020.29268 ◽

2020 ◽

Vol 9 (2) ◽

pp. 178

Author(s):

Julia Elsa Lakoro ◽

Max R. J. Runtuwene ◽

Paulina V. Y. Yamlean

Keyword(s):

Antioxidant Activity ◽

Extraction Method ◽

Total Phenol ◽

Total Phenolic ◽

Total Phenol Content ◽

Phenol Compounds ◽

Activity Test ◽

Ic50 Value ◽

Dpph Method ◽

Ethanol Extracts

ABSTRACTNanamuha (Bridelia monoica Merr.) is a plant that was used as a cancer and tumor drug by the Sangihe Islands community. This plant contains phenol compounds, flavonoids, alkaloids and tannins. The purpose of this study was to determine the potential of nanamuha leaves that grow in the Sangihe Island to have antioxidant activity and determine the total phenolic ethanol extracts of nanamuha leaf. The extraction method used is maceration with ethanol solvent p.a. The extracts obtained was determined total phenolic and antioxidant activity test using DPPH method. Based on the results obtained, the ethanol extracts of nanamuha leaves has antioxidant activity with an IC50 value of 75,03 µg / mL and the result showed that the total phenol content the ethanol extracts of nanamuha leaves of 53,34 mg / L. Keywords : Nanamuha leaf, total phenol, antioxidant activity, DPPH ABSTRAKNanamuha (Bridelia monoica Merr.) merupakan tanaman yang dimanfaatkan sebagai obat kanker dan tumor oleh masyarakat Kepulauan Sangihe. Tanaman ini memiliki kandungan senyawa fenol, flavonoid, alkaloid dan tanin. Tujuan dari penelitian ini adalah unutuk mengetahui potensi dari daun nanamuha yang tumbuh di Kepulaun Sangihe ini memiliki aktivitas antioksidan dan menentukan total fenolik dari ekstrak etanol daun nanamuha. Metode ekstraksi yang digunakan adalah maserasi dengan pelarut etanol p.a. Ekstrak yang diperoleh ditentukan total fenolik dan uji aktivitas antioksidan dengan metode DPPH. Berdasarkan hasil yang didapatkan ekstrak etanol daun nanamuha memiliki aktivitas antioksidan dengan nilai IC50 75,03 µg/mL dan hasil penelitian menunjukan total kandungan fenolik ekstrak etanol daun nanamuha sebesar 53,34 mg/L. Kata kunci : Daun Nanamuha, Total fenol, Aktivitas antioksidan, DPPH

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Uji Aktivitas Antioksidan N-Metil Kitosan Berkelarutan Tinggi

ALCHEMY Jurnal Penelitian Kimia ◽

10.20961/alchemy.14.1.15100.107-118 ◽

2018 ◽

Vol 14 (1) ◽

pp. 107

Author(s):

Mardiyah Kurniasih ◽

Purwati Purwati ◽

Ratna Stia Dewi ◽

Susi Fatimah

Keyword(s):

Antioxidant Activity ◽

Acetic Acid ◽

High Solubility ◽

Chitosan Concentration ◽

Ferric Thiocyanate ◽

Activity Test ◽

Dpph Method

Telah dilakukan uji aktivitas antioksidan dari N-metil kitosan yang memiliki kelarutan tinggi. Uji aktivitas antioksidan dilakukan dengan menggunakan metode DPPH (1,1-diphenyl-2-pikrilhidrazil) dan metode FTC (ferric thiocyanate). Optimasi sintesis dilakukan untuk memperoleh N-metil kitosan dengan kelarutan tinggi. Hasil penelitian menunjukkan bahwa N-metil kitosan yang berkelarutan paling tinggi adalah N-metil kitosan yang disintesis dengan 1,7 mL formaldehid 10%. Berdasarkan hasil uji aktivitas antioksidan menggunakan metode DPPH dapat diketahui bahwa N-metil kitosan merupakan antioksidan sedang dengan nilai IC50 sebesar 145,398 ppm. Hasil pengujian antioksidan metode FTC menunjukkan bahwa N-metil kitosan memiliki kemampuan menghambat terbentuknya senyawa radikal bebas yang disebabkan oleh oksidasi asam lemak.An Antioxidant Activity Test of High Solubility N-Methyl Chitosan. An antioxidant activity test of high solubility N-methyl chitosan has been performed. The antioxidant activity test was performed using DPPH (1,1-diphenyl-2-pikrilhidrazil) and FTC method (ferric thiocyanate). The synthesis optimization was performed to obtain high N-methyl chitosan solubility. The results showed that N-methyl chitosan with the highest solubility in 1% acetic acid solvent was N-methyl chitosan which was synthesized with 1.7 mL formaldehyde 10%. Based on the results of antioxant activity test using DPPH method can be seen that N-methyl chitosan is a medium antioxidant with IC50 value of 145.398 ppm. The result of antioxidant test of FTC method showed that N-methyl chitosan has antioxidant activity with tendency to increase along with the increase of N-methyl chitosan concentration.

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

Pharmacon Jurnal Farmasi Indonesia ◽

10.23917/pharmacon.v18i01.12161 ◽

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.

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STUDI OPTIMASI EKSTRAKSI KANDUNGAN SENYAWA FENOLIK TOTAL DAN UJI AKTIVITAS ANTIOKSIDAN DARI DAUN MANGGIS (Garcinia mangostana Linn.)

Jurnal Riset Kimia ◽

10.25077/jrk.v12i2.308 ◽

2019 ◽

Vol 10 (1) ◽

pp. 36

Author(s):

Emil Salim ◽

Yogi Afritunando ◽

Nindi Antika Febriana ◽

Mai Efdi

Keyword(s):

Antioxidant Activity ◽

Phenolic Compounds ◽

Total Phenolic Content ◽

Phenolic Content ◽

Total Phenolic ◽

Total Phenolic Compounds ◽

Garcinia Mangostana ◽

Activity Test ◽

Ic50 Value ◽

Dpph Method

This study aims to determine antioxidant activity and total phenolic content of mangosteen leaves in several different solvents. The antioxidant activity test of the extract was determined by the DPPH method and the total phenolic content was determined by the Folin-Ciocalteu method. The phytochemical test of mangosteen leaves showed the presence of phenolic compounds, saponins, triterpenoids and alkaloids. The extraction results increase with increasing water content in methanol, ethanol and acetone. The highest amount of extract was obtained using 50% acetone solvent (34.98 ± 0.17%). Extraction using 100% ethanol showed the highest total phenolic content (614.25 ± 5.58 mg GAE / g extract) and the lowest IC50 value (5.81 mg / L). The results of this study indicate that the use of 50% acetone solvent can optimize the amount of extract and 100% ethanol can optimize the content of total phenolic compounds and antioxidant activity of mangosteen leaves.

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DETERMINATION OF BIOLOGICAL ACTIVITIES OF THREE MARINE ALGAE COLLECTED FROM VISAKHAPATNAM COAST

Asian Journal of Pharmaceutical and Clinical Research ◽

10.22159/ajpcr.2017.v10i12.20857 ◽

2017 ◽

Vol 10 (12) ◽

pp. 274 ◽

Cited By ~ 2

Author(s):

Satya Lakshmi S

Keyword(s):

Antioxidant Activity ◽

Marine Algae ◽

Biological Activities ◽

Radical Scavenging ◽

Reducing Power ◽

Inflammatory Activity ◽

Diffusion Method ◽

Dpph Method ◽

Anti Inflammatory

Objective: Determination of biological activities of marine algae collected from the Visakhapatnam coastal region.Methods: Antibacterial activity of algal extracts determined by the well diffusion method, antioxidant activity was determined by reducing power (RP) method and 1, 1-diphenyl-2-picryl-hydrazil (DPPH) radical scavenging method finally anti-inflammatory activity was determined by human red blood cell stabilization method and egg albumin method.Results: Methanolic extracts of three algae have potential inhibition activity against Escherichia coli, Bacillus subtilis, Pseudomonas aeruginosa, and Staphylococcus aureus. Green alga Enteromorpha compressa has better antioxidant activity compared to the Gracilaria arcuata and Ulva fasciata when tested in RP and DPPH method. U. fasciata found good anti-inflammatory activity among the selected three algae.Conclusion: The three tested algae exhibited significant antibacterial and antioxidant activity compared to anti-inflammatory activity. These bioactive compounds containing macroalgae may find their commercial potential in medicine, food, and cosmetic industry

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Uji Aktivitas Antioksidan N-Metil Kitosan Berkelarutan Tinggi

ALCHEMY Jurnal Penelitian Kimia ◽

10.20961/alchemy.14.1.15100.124-135 ◽

2018 ◽

Vol 14 (1) ◽

pp. 124

Author(s):

Mardiyah Kurniasih ◽

Purwati Purwati ◽

Ratna Stia Dewi ◽

Susi Fatimah

Keyword(s):

Antioxidant Activity ◽

Acetic Acid ◽

High Solubility ◽

Chitosan Concentration ◽

Ferric Thiocyanate ◽

Activity Test ◽

Dpph Method

Telah dilakukan uji aktivitas antioksidan dari N-metil kitosan yang memiliki kelarutan tinggi. Uji aktivitas antioksidan dilakukan dengan menggunakan metode DPPH (1,1-diphenyl-2-pikrilhidrazil) dan metode FTC (ferric thiocyanate). Optimasi sintesis dilakukan untuk memperoleh N-metil kitosan dengan kelarutan tinggi. Hasil penelitian menunjukkan bahwa N-metil kitosan yang berkelarutan paling tinggi adalah N-metil kitosan yang disintesis dengan 1,7 mL formaldehid 10 %. Berdasarkan hasil uji aktivitas antioksidan menggunakan metode DPPH dapat diketahui bahwa N-metil kitosan merupakan antioksidan sedang dengan nilai IC50 sebesar 145,398 ppm. Hasil pengujian antioksidan metode FTC menunjukkan bahwa N-metil kitosan memiliki kemampuan menghambat terbentuknya senyawa radikal bebas yang disebabkan oleh oksidasi asam lemak.An Antioxidant Activity Test of High Solubility N-Methyl Chitosan. An antioxidant activity test of high solubility N-methyl chitosan has been performed. The antioxidant activity test was performed using DPPH (1,1-diphenyl-2-pikrilhidrazil) and FTC method (ferric thiocyanate). The synthesis optimization was performed to obtain high N-methyl chitosan solubility. The results showed that N-methyl chitosan with the highest solubility in 1 % acetic acid solvent was N-methyl chitosan which was synthesized with 1.7 mL formaldehyde 10 %. Based on the results of antioxant activity test using DPPH method can be seen that N-methyl chitosan is a medium antioxidant with IC50 value of 145.398 ppm. The result of antioxidant test of FTC method showed that N-methyl chitosan has antioxidant activity with tendency to increase along with the increase of N-methyl chitosan concentration.

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SINTESIS DAN UJI AKTIVITAS ANTIOKSIDAN SENYAWA 3-(4-METOKSIFENIL)-5-NAFTALEN-1-IL-1-FENIL-4,5-DIHIDRO-PIRAZOL

Photon: Jurnal Sain dan Kesehatan ◽

10.37859/jp.v8i01.520 ◽

1930 ◽

Vol 8 (01) ◽

pp. 1-5

Author(s):

Aisyah ◽

Jasril ◽

Hilwan Yuda Teruna

Keyword(s):

Antioxidant Activity ◽

Acetic Acid ◽

Microwave Irradiation ◽

1H Nmr ◽

13C Nmr ◽

Glacial Acetic Acid ◽

Intermolecular Cyclization ◽

Dpph Method ◽

Result Show

A pyrazoline analog, 3-(4-methoxy-phenyl)-5-naphtalen-1-yl-1-phenyl-4,5-dihydro-pyrazole (PF CA-4OMe) has been synthesized via intermolecular cyclization between substituted chalcones and phenylhydrazine using glacial acetic acid as a catalyst under microwave irradiation. The structure of the compound was characterized based on the interpretation of UV, FTIR, HRMS, 1H-NMR, 13C-NMR, HSQC and HMBC spectra. The antioxidant test was carried out by 2,2-diphenyl-1-picrylhydrazyl (DPPH) method. The result show that PF CA-4OMe was proved to have antioxidant activity with IC50 387,64 µg/mL.

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Aktivitas Antioksidan Ekstrak Etanol Akar Kalakai (Stenochlaena palustris Bedd) Asal Kalimantan Tengah

Jurnal Pharmascience ◽

10.20527/jps.v5i1.5788 ◽

2018 ◽

Vol 5 (1) ◽

Author(s):

Rabiatul Adawiyah ◽

Muhammad Ikhwan Rizki

Keyword(s):

Antioxidant Activity ◽

Inhibitory Concentration ◽

Peat Soil ◽

Sandy Soils ◽

Root Extract ◽

Peat Soils ◽

Sand Soil ◽

Activity Test ◽

Ic50 Value ◽

Dpph Method

ABSTRAK Tanaman khas Kalimantan yang banyak digunakan sebagai tanaman obat adalah kalakai atau sering juga disebut paku haruan (Stenochlaena palustris Bedd) atau pakis. Kalakai mengandung beberapa senyawa bioaktif seperti fenolik, flavonoid, alkaloid dan keluarga terpenoid yang telah terbukti sangat efektif sebagai antioksidan. Kalakai merupakan tumbuhan yang tumbuh subur di tanah gambut dan juga ditemukan tumbuh baik di tanah berpasir. Penelitian ini bertujuan mengetahui aktivitas antioksidan dari akar kalakai (Stenochlaena palustris) yang tumbuh pada tanah gambut dan tanah berpasir berdasarkan parameter Inhibitory Concentration 50 (IC50). Aktivitas antioksidan diuji menggunakan metode DPPH (2,2-difenil-1-pikril-hidrazil) dan kuersetin sebagai pembanding. Nilai IC50 untuk ekstrak akar kalakai pada tanah gambut yaitu sebesar 19,06 ppm dan pada ekstrak akar kalakai pada tanah pasir didapat IC50 sebesar 24,40 ppm. Hasil uji aktivitas antioksidan pada ekstrak etanol akar kalakai yang tumbuh pada tanah pasir dan tanah gambut memiliki aktivitas antioksidan yang sangat kuat. Kata Kunci : Akar, Antioksidan, Kalakai, Stenochlaena palustris Bedd ABSTRACT Borneo plants that are widely used as medicinal plants are kalakai or often also called paku Haruan (Stenochlaena palustris Bedd). Kalakai contains several bioactive compounds such as phenolics, flavonoids, alkaloids and terpenoid that have been shown to be very effective as antioxidants. Kalakai is a plant that thrives on peat soils and is also found to grow well in sandy soils. This study aims to determine the antioxidant activity of kalakai root (Stenochlaena palustris) that grows on peat soil and sandy soil based on Inhibitory Concentration 50 (IC50). Antioxidant activity was tested using DPPH method (2,2-diphenyl-1-picryl-hydrazil) and quercetin as a comparison. IC50 value for kalakai root extract on peat soil that is 19,06 ppm and at kalakai root extract on sand soil obtained IC50 that is 24,40 ppm. The results of antioxidant activity test on kalakai root extract that grow on sand and peat soil have very strong antioxidant activity. Keywords: Antioxidant, Kalakai, Root, Stenochlaena palustris Bedd

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