PENENTUAN POTENSI EKSTRAK KULIT BATANG TUMBUHAN SIKKAM (Bischofia javanica Blume) SEBAGAI ANTIOKSIDAN DENGAN METODE DPPH DAN SITOTOKSIK DENGAN METODE BSLT

This study aims to determine the level of antioxidant activity of Sikkam bark extract (Bischofia javanica Blume) and its potential as an anticancer agent. This research was conducted in November 2018 - April 2019 in the Laboratory of Chemical Education Guidance and Counseling and Basic Science Laboratory, University of Bengkulu. The sample in this study was obtained from Gunung Mariah village in Simalungun district, North Sumatra. The method used in this study was extraction using maceration, liquid-liquid fractionation, phytochemical test, DPPH (Diphenylpicrylhiydrazyl) test and BSLT test (Brine Shrimp Lethality Test). Extraction maceration using ethanol 96%, fractionation using a solvent n-hexane and ethyl acetate, phytochemical tests using Mayer's reagent, Lieberman-Burchard, FeCl3 1% and H2SO4 2N, antioxidant test using DPPH (1,1-diphenyl-2-picrylhydrazyl) and cytotoxic tests using shrimp Artemia salina Leach larvae. The results of the study on maceration of 800 grams of Sikkam bark obtained a crude extract of 53.6 grams (6.7%). Fractionation from 10 grams of crude extract obtained 7.24 gram ethanol fraction (72.4%), ethyl acetate fraction 2.14 gram (21.4%) and n-Hexane fraction 0.39 gram (3.9%). Phytochemical test results obtained the content of alkaloids, flavonoids, tannins, saponins and terpenoids with the highest yield on tannin compounds. The antioxidant activity test results obtained IC50 values in crude extracts of 20.94 ppm, ethanol fraction 36.29 ppm, ethyl acetate fraction 83.28 ppm and n-Hexane fraction 39.13 ppm which showed that crude extract, ethanol fraction, n-Hexane fraction were categorized as very strong antioxidants and Ethyl acetate fraction is categorized as a strong antioxidant. The cytotoxic test results using crude extract obtained an LC50 value of 54,827 ppm which showed that Sikkam bark extract was toxic so that it was potential as an anticancer agent.

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TOXICITY STUDY OF PARE LEAF EXTRACTS (MOMORDICA CHARANTIA) TO CULEX PIPIENS MOSQUITO LARVAE

Journal of Islamic Pharmacy ◽

10.18860/jip.v2i2.4506 ◽

2017 ◽

Vol 2 (2) ◽

pp. 13

Author(s):

Rahmi Annisa ◽

Muhammad Amir ◽

Hadi Kuncoro

Keyword(s):

Ethyl Acetate ◽

Crude Extract ◽

Culex Pipiens ◽

Ethyl Acetate Fraction ◽

Momordica Charantia ◽

Hexane Fraction ◽

Test Results ◽

Potential Toxicity ◽

Leaf Extracts ◽

Toxic Concentration

This study aims to determine the yield, toxicity, and toxic concentration of crude extracts of ethanol, n-hexane fraction extract, ethyl acetate fraction extract and n-butanol fractions extract pare leaf (Momordica charantiaL.) larvae Culex pipiens. The method used to determine the toxicity of extract larvasida test larvae Culex pipiens to obtain the LC99 values obtained using the analysis of Reed and Muench. Extraction and fractionation processis known to yield a ethanol crude extract obtained 8.86%, n-hexane fraction extract of 1%, ethyl acetate fraction extract 1.80% and n-butanol fractions extract of 0.80% and the toxicity obtained test results that pare leaf (Momordica charantia L.) have the potential toxicity larvae larvae of Culex pipiens as indicated by the value by Lethality Concrentation 99 % (LC99) in the crude extract ethanol 7416.52 ppm, n-hexane fraction extract of 2564.48 ppm, ethyl acetate fraction extract 2702.09 ppm and n-butanol fractions extract of 2665.63 ppm. Keywords: Pare leaf (Momordica charantia L.), toxicity, larvae Culex pipiens

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Comparative Antioxidant Activity on The Ficus benjamina and Annona reticulata Leaves

International Journal of Public Health Science (IJPHS) ◽

10.11591/ijphs.v4i1.4707 ◽

2015 ◽

Vol 4 (1) ◽

pp. 21

Author(s):

Nyi Mekar Saptarini ◽

Irma Erika Herawati

Keyword(s):

Antioxidant Activity ◽

Ethyl Acetate ◽

Ethanolic Extract ◽

Natural Antioxidants ◽

Ethyl Acetate Fraction ◽

Hexane Fraction ◽

Ficus Benjamina ◽

Water Fraction ◽

Free Radical Formation ◽

Annona Reticulata

Antioxidants can prevent free radical formation. Natural antioxidants found in many plants, such as Ficus benjamina and Annona reticulata. The study aimed to compare the antioxidant activity of extracts and fractions of Ficus benjamina and Annona reticulata leaves against 1,1-diphenyl-2-picrilhydrazyl. The steps of this study consist of extraction, fractionation with n-hexane, ethyl acetate and water, phytochemical screening, antioxidant activity determination, and comparing the IC50 values. Percentage scavenging activity of the extracts and fractions against DPPH was calculated to determine the antioxidant activity. The IC50 value of Ficus benjamina was 127.86 ppm for ethanolic extract, 94.01 ppm for water fraction, 115.48 ppm for ethyl acetate fraction, and 335.50 ppm for n-hexane fraction. The IC50 value of Annona reticulata was 274.31 ppm for ethanolic extract, 211.42 ppm for water fraction, 367.91 ppm for ethyl acetate fraction, and 741.08 ppm for n-hexane fraction. The results showed that the Ficus benjamina water fraction was the best antioxidant compared to other extract and fraction.

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Comparative Antioxidant Activity on The Ficus benjamina and Annona reticulata Leaves

International Journal of Public Health Science (IJPHS) ◽

10.11591/.v4i1.4707 ◽

2015 ◽

Vol 4 (1) ◽

pp. 21

Author(s):

Nyi Mekar Saptarini ◽

Irma Erika Herawati

Keyword(s):

Antioxidant Activity ◽

Ethyl Acetate ◽

Ethanolic Extract ◽

Natural Antioxidants ◽

Ethyl Acetate Fraction ◽

Hexane Fraction ◽

Ficus Benjamina ◽

Water Fraction ◽

Free Radical Formation ◽

Annona Reticulata

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THE ANTIOXIDANT ACTIVITY AND PHYTOCHEMICAL SCREENING OF ETHANOL EXTRACT, FRACTIONS OF WATER, ETHYL ACETATE AND n-HEXANE FROM MISTLETOE TEA (SCURRULA ATROPURPUREABL. DANS)

Asian Journal of Pharmaceutical and Clinical Research ◽

10.22159/ajpcr.2017.v10i2.15724 ◽

2017 ◽

Vol 10 (2) ◽

pp. 343 ◽

Cited By ~ 4

Author(s):

Resmi Mustarichie

Keyword(s):

Antioxidant Activity ◽

Ascorbic Acid ◽

Ethyl Acetate ◽

Antioxidant Activities ◽

Ethanol Extract ◽

Ethyl Acetate Fraction ◽

Hexane Fraction ◽

Phytochemical Screening ◽

Water Fraction ◽

Ic50 Values

Objective: The aim of this study is to investigate antioxidant activity and phytochemical screening of ethanol extract, fractions of water, ethyl acetate, and n-hexane from mistletoe tea (Scurrula atropurpurea Bl. Dans).Methods: Simplicia extracted using soxhlet equipment with 96% ethanol. Fractionation was conducted using liquid-liquid extraction using a solvent of water, ethyl acetate and n-hexane. Screening of phytochemical and antioxidant activity was performed against these fractions. Antioxidant activity was determined by 2,2-diphenyl-1-picrylhydrazyl method using ultraviolet-visible spectrophotometry with ascorbic acid as standard. Phytochemical screening was conducted based on the method of Farnsworth.Results: The IC50 values of ethanol extract, water fraction, fraction of ethyl acetate, and n-hexane fraction were 21.92 ppm, 89.57 ppm, 14.08 ppm, and 162.09 ppm, respectively, whereas for ascorbic acid was 4.41 ppm. The ethanol extract and ethyl acetate fraction contained compounds were the same group, polyphenolic, tannins, flavonoids, monoterpenoid, steroids, triterpenoids, and quinones. Fraction of water contained compounds such as polyphenolic group, flavonoids, monoterpenoids, sesquiterpenoids, steroids, and triterpenoids. n-hexane fraction compounds contained steroids and triterpenoids.Conclusion: The ethanol extract, water fraction, ethyl acetate fraction, and n-hexane fraction showed antioxidant activities. The ethanol extract, fractions of water, and ethyl acetate fraction contained flavonoids and polyphenolic potential as antioxidants.Keywords: Mistletoe tea, Scurrula atropurpurea, Antioxidant, 2,2-diphenyl-1-picrylhydrazyl, Ascorbic acid.

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ANTIOXIDANT ACTIVITY OF TARENNA POLYCARPA (MIQ.) KOORD. LEAF

Asian Journal of Pharmaceutical and Clinical Research ◽

10.22159/ajpcr.2018.v11i4.21929 ◽

2018 ◽

Vol 11 (4) ◽

pp. 224

Author(s):

Rika Puspita Sari ◽

Marline Nainggolan ◽

Rosidah Rosidah

Keyword(s):

Antioxidant Activity ◽

Ethyl Acetate ◽

Leaf Extract ◽

Inhibitory Concentration ◽

Ethanol Extract ◽

Ethyl Acetate Fraction ◽

Antioxidant Potential ◽

Hexane Fraction ◽

Dpph Assay

Objective: The objective of this study is to evaluate the antioxidant activity of Tarenna polycarpa (Miq.) koord. Ex Valenton. Leaf extract and fractions.Methods: Antioxidant activity was examined by DPPH method.Results: Ethanol extract, n-hexane fraction, and ethyl acetate fraction with DPPH assay measured as half maximal inhibitory concentration were 55.21, 109.73, and 42.04 μg/mL, respectively.Conclusions: The results reveal that T. polycarpa extract and fractions have strong antioxidant potential. Our further study is to isolate compounds responsible for antioxidant components.

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Determination of Total Phenolic, Total Flavonoid and Antioxidant Activity of Karamunting Leaves (Rhodomyrtus tomentosa (Aiton) Hassk) Extract and Fraction

Jurnal Penelitian Farmasi Indonesia ◽

10.51887/jpfi.v9i2.975 ◽

2021 ◽

Vol 9 (2) ◽

pp. 72-78

Author(s):

Rahma Dona

Keyword(s):

Antioxidant Activity ◽

Ethyl Acetate ◽

Ethanol Extract ◽

Ethyl Acetate Fraction ◽

Total Flavonoid ◽

Hexane Fraction ◽

Total Phenolic ◽

Water Fraction ◽

Ic50 Value

Karamunting (Rhodomyrtus tomentosa (Aiton) Hassk) is a family of Myrtaceae which has been used by the community as traditional medicine. The purpose of this research is determine total phenolic and total flavonoid level and test antioxidant activity of Karamunting Leaves. Determination of total phenolic using gallic acid standard by the Folin Ciocalteu method. The results obtained total phenolic in water fraction of 99 mgGAE/g, ethanol extract 94,1 mgGAE/g, ethyl acetate fraction 83,3 mgGAE/g and n-hexane fraction 41,4 mgGAE/g. Determination of total flavonoid using standard quersetin with AlCL3 complex formation method, the results obtained total flavonoid in water fraction of 156,8 mgQE/g, ethanol extract 192,6 mgQE/g, ethyl acetate fraction 89,4 mgQE/g and n-hexane fraction 31,3 mgQE/g. Determination of antioxidant activity was determined by DPPH radical capture test (1,1-diphenyl-2-picrylhydrazyl), the results obtained in water fraction with IC50 value 15,02 µg/mL, ethanol extract 14,06 µg/mL, ethyl acetate fraction 14,48 µg/mL with very strong activity of antioxidant, whereas in the n-hexane fraction was categorized as weak antioxidant activity with an IC50 value of 264,02 µg/mL.

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AKTIVITAS ANTIOKSIDAN DAN ANTIBAKTERI EKSTRAK DAUN Jatropha gossypifolia L

Alotrop ◽

10.33369/atp.v1i1.2707 ◽

2017 ◽

Vol 1 (1) ◽

Author(s):

Nia Sapitri Pangestu ◽

Nurhamidah Nurhamidah ◽

Elvinawati Elvinawati

Keyword(s):

Antioxidant Activity ◽

Ethyl Acetate ◽

Leaf Extract ◽

Propionibacterium Acnes ◽

Inhibition Zone ◽

Ethyl Acetate Fraction ◽

Activity Test ◽

Dpph Method ◽

Jatropha Gossypifolia ◽

Ethanol Fraction

This study was conducted to determine the activity of Jatropha gossypifolia L (jarak merah’s) leaf extract as an antioxidant and antibactery against acne causing bacteria (Propionibacterium acnes). To obtain an J. gossypifolia L jarak merah’s leaf extract by maceration using 96% ethanol, and then fractionated with n-hexane and ethyl acetate. Testing of antioxidant activity by DPPH method and antibactery activity test by the paper disc method. Antioxidant activity test has done for ethanol fraction, ethyl acetate fraction and n-hexane fraction, while testing for antibacterial activity performed on fractions active as antioxidant. The test results demonstrate the antioxidant activity of ethyl acetate fraction and the ethanol fraction as a fraction very strong with IC50 value of 22.33 ppm for ethyl acetate fraction and 41.04 ppm for ethanol fraction. Then the fraction of ethyl acetate and ethanol fraction antibactery activity test, the result is known that both factions have the ability to inhibit the growth of bacteria Propionibacterium acnes demonstrated by the inhibition zone is formed. In 1000 ppm is formed diameter of the greatest inhibition zone that is equal to 6 mm for ethyl acetate fraction and 5 mm for ethanol fraction.

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Phytochemical Screening, Antibacterial and Cytotoxic Activity of Dendobium lasianthera J.J.Sm. from Papua

JURNAL BIOLOGI PAPUA ◽

10.31957/jbp.1289 ◽

2020 ◽

Vol 12 (2) ◽

pp. 93-101

Author(s):

Verena Agustini ◽

Eva S. Simaremare ◽

Elsye Gunawan ◽

Jane Awom ◽

Susan Wopi

Keyword(s):

Ethyl Acetate ◽

Ethanol Extract ◽

Inhibition Zone ◽

Ethyl Acetate Fraction ◽

Hexane Fraction ◽

Diffusion Method ◽

Phytochemical Screening ◽

Cytotoxic Potential ◽

Stem Extract ◽

Ethanol Fraction

The aims of the study are to evaluate bioactive compounds, antibacterial and cytotoxic potential of D. lasianthera. This orchid grows well all over New Guinea Island as an ornamental plant because of their beautiful flowers. Orchids also known rich of its phytochemical compounds which already used as a traditional medicine in many countries around the world. However, research in pharmacological fields is still limited. In this study, leaves and stem of D. lasianthera were powdered and extracted with ethanol followed by fractionated using n-hexane, ethyl acetate, and ethanol solvent. Extract as well as fraction were tested for phytochemical screening and determined antibacterial activity against Escherichia coli and Staphylococcus aureus using Disc Diffusion Method. Brine Shrimp Lethality Test (BSLT) was used to observe cytotoxic potential of leaves and stem extract and fraction at 10, 50, 100, 250, 500, 750, and 1000 ppm. The results showed that the leaves and stem extract contained tannin and alkaloids, separately. The ethanol extract of D. lasianthera showed 7.35 mm (leaves) and 7.43 mm (stem) inhibition zone against S. aureus Furthermore, the maximum inhibition zone of ethanol fraction of leaves and n-hexane fraction of stem were 8.42 mm and 8.10 mm separately. The LC50 of stem extract and fractions in these study were 699.3 ppm (ethanol extract), 602.1 ppm (ethyl acetate), 329.6 ppm (n-hexane fraction) and 676 ppm (ethanol fraction), whereas for leaves, only ethyl acetate fraction has toxict activity with an average LC50 833.2 ppm. Key words: D. lasianthera; phytochemical screening; antibacterial; cytotoxicity; Papua.

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ANTIOXIDANT ACTIVITY OF ETHYL ACETATE EXTRACT OF NUTMEG (Myristica fragrans Houtt) STEM BARK

Jurnal Natural ◽

10.24815/jn.v19i3.12618 ◽

2019 ◽

Vol 19 (3) ◽

pp. 58-63

Author(s):

Ilham Maulana ◽

Binawati Ginting ◽

Nurdin Nurdin ◽

Saiful Fakri

Keyword(s):

Antioxidant Activity ◽

Ethyl Acetate ◽

Ethyl Acetate Extract ◽

Stem Bark ◽

Bark Extract ◽

Test Results ◽

Myristica Fragrans ◽

Ic50 Value ◽

Stem Bark Extract ◽

Myristica Fragrans Houtt

Antioxidant activity test for the extract of ethyl acetate nutmeg stem bark (Myristica fragrans Houtt) was carried out using 2,2-diphenyl-1picrylhydrazil (DPPH). The test results of antioxidant activity of ethyl acetate nutmeg stem bark extract with DPPH method at a concentration of 25 ppm, 50 ppm and 100 ppm obtained IC50 value = 68.14 ppm with IC50 value of vitamin C (as positive control) 3.657 ppm. The results of column chromatographic separation of ethyl acetate nutmeg stem bark extract obtained 5 combined fractions namely MFEK 1, MFEK 2, MFEK 3, MFEK 4 and MFEK 5. The test results of the fraction antioxidant activity in a good category were the MFEK 1 fraction. The MFEK 2 fraction to MFEK 5 showed an antioxidant activity lower than compared to the ethyl acetate extract. This shows that the ethyl acetate nutmeg stem bark extract has a better inhibitory activity, because there are several active compounds contained in the extract which can inhibit free radicals, so the IC50 value of the extract is better than the fractions.

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AKTIVITAS ANTIOKSIDAN EKSTRAK ETANOL DAN FRAKSI AKAR TABAR KEDAYAN (Aristolochia foveolata Merr.) DENGAN METODE DPPH (2,2 DIPHENYL-1-PICRILHYDRAZIL)

JFL : Jurnal Farmasi Lampung ◽

10.37090/jfl.v8i1.81 ◽

2019 ◽

pp. 8-14

Author(s):

Risa Supringrum ◽

Siti Jubaidah

Keyword(s):

Antioxidant Activity ◽

Free Radicals ◽

Ethyl Acetate ◽

Ethanol Extract ◽

Ethyl Acetate Fraction ◽

The Body ◽

Hexane Fraction ◽

High Dose ◽

Water Fraction ◽

Dpph Method

Antioxidants are substances that can neutralize free radicals, thus protecting the body from various diseases by binding to free radicals and highly reactive molecules that can damage cells. The use of high-dose synthetic antioxidants is reported to be toxic and carcinogenic. Tabar Kedayan root (Aristolochia foveolata Merr) is one of the native plants from North Kalimantan, which is empirically used as an anti-poison, containing secondary metabolites including alkaloids, tannins, flavonoids. Flavonoids are powerful antioxidants. Some studies report that the function of flavonoids can be to prevent and treat cancer. This study aims to determine the antioxidant activity of ethanol extract and n-hexane fraction, the ethyl acetate fraction of Tabar Kedayan root with 2.2 Diphenyl- 1-Picrilhydrazil (DPPH) method as a free radical compound. The results of the study obtained IC50 values for each sample, at ethyl acetate fraction 267.48 ppm, ethanol extract at 603.80 ppm, ethanol-water fraction 705.43 ppm, n- hexane fraction 1500 ppm. The antioxidant activity tests indicate that ethyl acetate fraction is categorized as weak antioxidant, while the ethanol-water fraction and n-hexane fraction exhibit no antioxidant activity. Keywords : Tabar Kedayan, Antioxidants, 2.2 Diphenyl-1-Picrilhydrazil

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