scholarly journals IN VITRO ANTINEPHROLITHIASIS EFFECT OF BREADFRUIT (ARTOCARPUS ALTILIS (PARK) FOSBERG) LEAF EXTRACT BY ATOMIC ABSORPTION SPECTROPHOTOMETRY

2018 ◽  
Vol 11 (13) ◽  
pp. 206
Author(s):  
Effendy De Lux Putra ◽  
Nahitma Ginting ◽  
Nahitma Ginting ◽  
Nazliniwaty Nazliniwaty ◽  
Nazliniwaty Nazliniwaty ◽  
...  
Keyword(s):  
Calcium Oxalate ◽  
Ethyl Acetate ◽  
Atomic Absorption ◽  
Leaf Extract ◽  
Ethyl Acetate Extract ◽  
Ethanol Extract ◽  
Hexane Extract ◽  
Phytochemical Content ◽  
Extract Solution

 Objective: The objective of this study is to observe the solubility calcium oxalate as a prototype of kidney stone in breadfruit leaf extract solution (n-hexane extract solution, ethyl acetate extract solution, and ethanol extract solution) by atomic absorption spectrophotometry.Methods: Research was conducted qualitatively to analyze calcium oxalate solubility in breadfruit leaf extract solution. The solubility of calcium was known by measuring the levels of calcium in extract solution before and after incubation with calcium oxalate. Potassium as a factor that can enhance the solubility of calcium oxalate also measured by atomic absorption spectrophotometry.Results: The higher concentration of extract solution used in incubation with calciumoxalate, the higher dissolving activity of calcium oxalate. The highest activity was found in ethyl acetate extract to dissolve calcium oxalate. Potassium has a small effect on the activity of dissolving calcium oxalate. Activity may be due to the phytochemical content present in the ethyl acetate extract.Conclusion: Ethyl acetate extract solution has the highest activity to dissolve calcium compared to n-hexane extract and ethanol extract solution.

scholarly journals Potential of Malacca leaf (Phyllanthus emblica) against Salmonella sp

2020 ◽  
Vol 151 ◽  
pp. 01029
Author(s):  
Nuzul Asmilia ◽  
Mahdi Abrar ◽  
Yudha Fahrimal ◽  
Amalia Sutriana ◽  
Yobeswi Husna
Keyword(s):  
Ethyl Acetate ◽  
Leaf Extract ◽  
Ethyl Acetate Extract ◽  
Ethanol Extract ◽  
Average Diameter ◽  
Positive Control ◽  
Hexane Extract ◽  
Clear Zone ◽  
Inhibitory Property

Malacca is one of traditional medicine that possesses a potent antimicrobial activity. This study aims to determine the inhibitory activity of Malacca leaf extract on the growth of Salmonella sp in vitro. The bacteria was obtained from Microbiology Laboratory of the Faculty of Veterinary Medicine, Universitas Syiah Kuala. The study was conducted using n-hexane extract, ethyl acetate extract and ethanol of malacca leaves with dilution concentrations of 5%, 25%, and 50%.The inhibitory property of malacca leaf was tested using Kirby-Bauer method. Data were analyzed descriptively. The results of this study indicate that n-hexane extract, ethyl acetate extract and ethanol extract of malacca leaves can inhibit the growth of Salmonella sp. The n-hexane extract of malacca leaves showed a greater inhibition than the ethyl acetate and ethanol extract of malacca leaves. n-hexane extract with a concentration of 5%, 25%, and 50% showed average diameter inhibition of 1.35 mm (weak), 4.97 mm (moderate), and 12.87 mm (strong), respectively ethyl acetate extract with a concentration of 5%, 25%, and 50% showed average diameter inhibition of 2.00 mm (weak), 5.72 mm (moderate), and 7.58 mm (moderate), whereas in ethanol extract were 0.47 mm (weak), 2.58 mm (weak), and 4.35 mm (weak), repectively. The clear zone areas in negative and positive control were 0.00 mm 20.00 mm, respectively. Malacca leaf extract possess inhibitory property against the growth of the Salmonella sp.

scholarly journals The Dose Effect of Mangrove Leaf Extract (Rhizophora apiculata) on Anticancer Activity in HeLa Cells

2021 ◽  
Vol 5 (1) ◽  
pp. 1
Author(s):  
Dwi Mahfud Maulana
Keyword(s):  
Hela Cell ◽  
Cell Viability ◽  
Ethyl Acetate ◽  
Leaf Extract ◽  
Ethyl Acetate Extract ◽  
Ethanol Extract ◽  
Hexane Extract ◽  
Rhizophora Apiculata ◽  
Ic50 Value ◽  
Ethyl Acetate Extracts

Disease cancer caused by abnormal growth of tissue where there has been an error, fast and out of control. Judging from the fact of gender, more than 270,000 women die every year caused by cervical cancer. To inhibit the growth of cancer cells, a compound is needed that causes the cell cycle to stop so that the ability of cell proliferation decreases. Alkaloid compounds can inhibit proliferation through oxidative inhibition processes that can cause cancer. Mangrove plants have potential as anticancer, antimicrobial, and antioxidant. The content of chemical compounds found in mangroves are flavonoids, steroids, alkaloids, phenolites, saponins and tannins. These compounds show high antioxidant activity and are shown to have a real relationship with the properties of the material's bioactivity against cancer cells. One of the mangrove species is Rhizophora apiculata. The purpose of this study was to determine the IC50 value produced by Rhizophora apiculata mangrove leaf extract on HeLa cell viability and to see the effect of Rhizophora apiculata mangrove leaf extract dosage on HeLa cell viability. The method used in this research is the experimental method. The research parameters included yield, proximate test, phytochemical test, toxicity test, total phenol test, cytotoxicity test and LC-MS test. The experimental design used was a simple and complex completely randomized design (CRD) with the Tukey test.The results of this study showed that the highest yield was in the ethanol extract of 5.91%, while the n-hexane and ethyl acetate extracts respectively had yields of 1.18% and 1.31%. The results of the proximate test on the water content of leaves and powder were 64.53% and 13.86%, respectively, the results of the ash content in the leaves and powder of Rhizophora apiculata were 3.94% and 8.41%, respectively. while the water content in the extract obtained the highest yield in the ethanol extract of 21.42%, while the n-hexane extract and ethyl acetate extract were 11.08% and 15.42%, respectively. For phytochemical results, it was found that n-hexane extract only contained alkaloids, flavonoids and steroids. Ethyl acetate extract contains steroid compounds. Meanwhile, the ethanol extract contains the most bioactive compounds, namely saponins, flavonoids, tannins and triterpenoids. The toxicity test using the Brine Shrimp Lethality Test (BSLT) method resulted in the lowest IC50 of ethanol extract at 49.45 ppm while the n-hexane and ethyl acetate extracts were 251.63 ppm and 920.45 ppm respectively. In the total phenol test, the n-hexane extract was 66.79 mg GAE / 100 gr, 222.97 mg GAE / 100 gr ethyl acetate extract and 929.04 mg GAE / 100 gr ethanol extract. HeLa cell cytotoxicity testing using the MTT method (3- (4,5-dimethiltiazol-2-yl) -2,5-dipheniltetra zolium bromide) assay resulted in the highest cell viability value at a dose of 125 ppm of 46.97%. As for the doses of 250 ppm, 500 ppm 1000 ppm, and 2000 ppm resulted in a percentage of viability of 42.95% 37.70% 35.82% and 32.12%, respectively. The IC50 value of Rhizophora apiculata leaf extract was 64.42 ppm. This value indicates that the Rhizophora apiculata extract is toxic to HeLa cells.

scholarly journals UJI AKTIVITAS ANTIOKSIDAN EKSTRAK DAUN DARUJU (Acanthus ilicifolius L.) DENGAN METODE PEREDAMAN RADIKAL BEBAS 1,1-DIPHENYIL-2-PICRYLHIDRAZIL (DPPH)

2018 ◽  
Vol 5 (2) ◽  
pp. 299-308
Author(s):  
Selpida Handayani ◽  
Ahmad Najib ◽  
Nurul Purnama Wati
Keyword(s):  
Antioxidant Activity ◽  
Free Radical ◽  
Ethyl Acetate ◽  
Extraction Method ◽  
Leaf Extract ◽  
Ethyl Acetate Extract ◽  
Ethanol Extract ◽  
Hexane Extract ◽  
Acanthus Ilicifolius ◽  
Ic50 Value

Sea holly leaves (Acanthus ilicifolius L.) belongs to Acanthaceae family, contain flavonoid compounds, alkaloids, an phenols. This research aimed to determine the antioxidant activity of sea holly leaf extract by free radical damping method 1,1-Diphenyl-2-Picrylhydrazil (DPPH). The extraction method multilevel maseration using n-hexane extract, ethyl acetate extract, and ethanol extract is 1,55%, 0,65% and 4,97% respectively. On each extract, the antioxidant activity was assayed by DPPH free radical inhibition method by measuring is absorbance at the maximum wavelength of 515nm using UV-VIS spectrophometer with quercetin compound as comparator. The result of antioxidant assay showed that IC50 value, ethanol extract is 34,659 μg/mL (strong antioxidant), ethyl acetate extract is 162,512 μg/mL (weak antioxidant), n-hexane extract is361,730 μg/mL (not active as antioxidant).

scholarly journals KLT BIOAUTOGRAFI HASIL PARTISI EKSTRAK ETANOL HERBA BANDOTAN (Ageratum conyzoides L.) TERHADAP Shigella dysentriae

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Surya Sumantri Abdullah ◽  
Natsir Djide ◽  
Sartini Natsir
Keyword(s):  
Ethyl Acetate ◽  
Incubation Time ◽  
Ethyl Acetate Extract ◽  
Ethanol Extract ◽  
Hexane Extract ◽  
Diffusion Method ◽  
Diameter Measurement ◽  
Steroid Compound ◽  
Ageratum Conyzoides ◽  
Bioassay Method

Penelitian uji daya hambat dan analisis KLT bioautografi hasil partisi ekstrak etanol herba bandotan (Ageratum conyzoides L.) terhadap Shigella dysentriae  telah dilakukan. Penelitian ini bertujuan untuk mengetahui kemampuan ekstrak tersebut dalam menghambat pertumbuhan S.dysentriae dan membandingkan daya hambat ekstrak dengan tingkat kepolaran yang berbeda yaitu pada ekstrak n-heksana, larut etil asetat, dan tidak larut etil asetat berdasarkan  pengukurandiameter hambatan yang terbentuk. Herba tersebut diekstraksi dengan etanol menggunakan metode maserasi, lalu dipartisi dengan pelarut n-heksana dan etil asetat. Pengukuran dilakukan dengan menggunakan metode difusi pada medium Miller Hinton Agar (MHA) dengan waktu inkubasi 24 jam pada suhu 37oC dan memberikan diameter daerah hambatan terbesar pada ekstrak tidak larut etil asetat herba bandotan yaitu 9,3 dan 10,3 mm. Pemisahan secara KLT pada ekstrak n-heksana, ekstrak etil asetat, dan ekstrak tidak larut etil asetat dengan cairan pengelusi berturut-turut, n-heksana:etil asetat (3:1), n-heksana:etil asetat (1:1), dan etil asetat:etanol (10:1) dengan jumlah bercak noda berturut-turut 4, 5, dan 2. Nilai Rf pada ekstrak n-heksana 0.25, 0.41, 0.52, dan 0.71 sedangkan pada ekstrak etil asetat 0.34, 0.53, 0.65, 0.81, dan 0.92 pada ekstrak tidak larut etil asetat 0.33 dan 0.64. Hasil KLT bioautografi diperoleh komponen antibakteri yang diidentifikasi ekstrak n-heksana adalah golongan steroid dan pada tidak larut etil asetat golongan polifenol ABSTRACTInhibition test research and TLC bioautographic bioassay method of the partition results of the ethanol extract of bandotan (Ageratum conyzoides L.) herb against Shigella dysentriae have been conducted. This study aims to determine the ability of these extracts to inhibit S.dysentriae growth and to compare the inhibition of extracts with different polarity levels, n-hexane soluble, ethyl acetate soluble, and ethyl acetate insoluble extracts based on the diameter measurement of the formed resistance. The herbs were extracted with ethanol using the maceration method, then partitioned with n-hexane and ethyl acetate solvents. Measurements were carried out using the diffusion method on Miller Hinton Agar (MHA) medium with an incubation time of 24 hours at 37oC and gave the largest diameter area of resistance to the ethyl acetate insoluble extract of bandotan herb, value 9.3 and 10.3 mm. Separation by TLC on n-hexane extract, ethyl acetate extract, and ethyl acetate insoluble extract with elusive liquid respectively, n-hexane: ethyl acetate (3: 1), n-hexane: ethyl acetate (1: 1), and ethyl acetate: ethanol (10: 1) with the number of stains 4, 5, and 2, respectively. 0.81, and 0.92 in ethyl acetate insoluble extracts 0.33 and 0.64. The results of the bioautography TLC bioassay method showed that the antibacterial component identified in the n-hexane extract was a steroid compound and ethyl acetate insoluble was a polyphenol compound.

In Vitro Tracing of Cytotoxic Compounds in Jarak Cina Stem Bark (Jatropha Multifida Linn.)

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Sista Werdyani ◽  
Annisa Fitria ◽  
Sari Rakhmawati
Keyword(s):  
Ethyl Acetate ◽  
Cytotoxic Activity ◽  
Cancer Cells ◽  
Cancer Cell ◽  
Ethyl Acetate Extract ◽  
Soxhlet Extraction ◽  
Ethanol Extract ◽  
Jatropha Multifida ◽  
Mcf 7

Cancer remains one of the diseases with increasing number of sufferers, but research on compounds that act as anti-cancer is also ongoing. Terpenoids have been known as a compound that can inhibit the proliferation of cancer cells. One of the medical plants that produce terpenoids is Jarak cina (Jatropha multifida Linn.). Therefore, the possibility of Jarak cina (Jatropha multifida Linn.) to have an cytotoxic activity on cancer cell proliferation is reasonably high. This study was conducted to determine the cytotoxic activity of Jarak cina (Jatropha multifida Linn.) bark extracts against cancer cell MCF-7. Jarak cina bark was extracted using the multilevel soxhlet extraction method with n-hexane, ethyl acetate, and ethanol as the solvents. All the three extracts were then tested against MCF-7 cancer cells using MTT (3-(4,5-dimethylthiazol-2-yl) - 2,5-diphenyltetrazolium bromide) method. Data analysis was performed for IC50 (ppm) parameter. The results showed that the IC50 of n-hexane extract was 313.21 ppm, while the ethyl acetate extract reached 258.38 ppm of IC50, and the IC50 of ethanol extract was 418.51 ppm. The highest potential of cytotoxicity was found in the ethyl acetate extract, so further testing would be required to optimize the proliferation inhibitory activity.

scholarly journals Antimicrobial Activity of Few Medicinal Plants against Clinically Isolated Human Cariogenic Pathogens—An In Vitro Study

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
H. Shyla Jebashree ◽  
S. Jayasurya Kingsley ◽  
Emmanuel S. Sathish ◽  
D. Devapriya
Keyword(s):  
Ethyl Acetate ◽  
Inhibitory Concentration ◽  
Ethyl Acetate Extract ◽  
In Vitro Study ◽  
Ethanol Extract ◽  
Psidium Guajava ◽  
Terminalia Chebula ◽  
Zone Of Inhibition ◽  
Mimusops Elengi

Hexane, ethyl acetate, ethanol and methanol extracts of Psidium guajava, Terminalia chebula, Mimusops elengi and Achyranthes aspera were tested against the dental caries causing bacteria Streptococcus mutans and fungus Candida albicans isolated from caries infected patients. All the four extracts of P. guajava showed activity against both S. mutans and C. albicans. Maximum zone of inhibition was observed in ethyl acetate of P. guajava. The four extracts of T. chebula and M. elengi showed antibacterial activity against S. mutans. M. elengi extracts and ethanol extract of T. chebula did not show any antifungal activity against C. albicans. Except for the hexane extract of A. aspera, the other three extracts showed activity against the tested microbes. The ethyl acetate P. guajava leaf extract showed the minimum inhibitory concentration (MIC) against S. mutans to be <0.076 mg/mL in both MHB and BHI. The P. guajava ethyl acetate extract was subjected to GC-MS.

scholarly journals Evaluation Patch of Rhizoma Extract Kencur (Kaempferia galanga L.) as Anti-Inflammatory with Enhancer

2019 ◽  
Vol 6 (2) ◽  
pp. 59
Author(s):  
Hesti Riasari ◽  
Revika Rachmaniar ◽  
Sri Wahyuni
Keyword(s):  
Ethyl Acetate ◽  
Propylene Glycol ◽  
Ethyl Acetate Extract ◽  
Diclofenac Sodium ◽  
Pharmaceutical Preparations ◽  
Ethanol Extract ◽  
Negative Control ◽  
Hexane Extract ◽  
Kaempferia Galanga ◽  
Anti Inflammatory

Kencur (Kaempferia galanga L.) is a family of Zingiberaceae. Several studies have shown that kencur can help reduce inflammation because kencur is known to contain anti-inflammatory compounds, namely marker compounds from flavonoids, kaempferol. For the development of pharmaceutical preparations, research on anti-inflammatory plasters containing 96% ethanol extract, n-hexane extract, ethyl acetate extract and 70% ethanol extract from ginger rhizome with the addition of penetration enhancer (enhancer), namely propylene glycol. This anti-inflammatory plaster was tested for its activity in 5 groups of Wistar strain rat feet which had been induced 1% carrageenan (negative control); positive control (diclofenac sodium), ethanol96% extract, n-hexane extract, ethyl acetate extract and 70% ethanol extract from kencur rhizome and compared with plaster of kencur rhizome ethanol extract without enhancer. The results showed the effect of adding enhancers 30 minutes after administration. 96% ethanol extract and ethyl acetate extract had reduced inflammation by 79.99% in rat test animals compared to plaster ethanol extract of rhizome kencur without the addition of enhancers. Keywords :  Kaempferia galanga. L., patch, anti-inflammatory, enhancer, propylene glycol

scholarly journals ANTI-TYROSINASE ACTIVITY FROM VARIOUS SOLVENTS OF PEANUT SHELL (ARACHIS HYPOGAEA L.) EXTRACTS IN VITRO

2019 ◽  
pp. 150-152
Author(s):  
RISHA FILLAH FITHRIA ◽  
MELLA DWI KRISDIANA ◽  
ETIKA MUSLIMAH ◽  
SARIF MUSYAFA ◽  
NINING SUGIHARTINI
Keyword(s):  
Ethyl Acetate ◽  
Kojic Acid ◽  
Ethyl Acetate Extract ◽  
Ethanol Extract ◽  
Tyrosinase Activity ◽  
Peanut Shell ◽  
Microplate Reader ◽  
Tyrosinase Enzyme ◽  
Better Than

Objective: This study aimed to determine in vitro anti-tyrosinase activity from various solvents of peanut shell extracts and to find out if the activityis better than kojic acid which is a conventional compound used as anti-hyperpigmentation agent.Methods: Extraction was done by maceration method with various solvents of ethyl acetate, n-hexane, and 70% ethanol. Extracts were made into theseries concentration of 25, 50, and 75 μg/ml. Kojic acid with concentration of 50 μg/ml used as positive control and 5% dimethyl sulfoxide used asnegative control. Tyrosinase enzyme will react with L-3,4-dihydroxyphenylalanine substrate to produce dopachrome compound. The absorbance ofdopachrome read by microplate reader at λ = 492 nm. If the absorbance read by the microplate reader is low, means that the inhibition power of thepeanut shell extract against the tyrosinase enzyme is high. Anti-tyrosinase activity seen by the percentage inhibition value. The percentage inhibitionvalue was analyzed with Kruskal–Wallis test followed by Mann–Whitney U-test; all tests were carried out with a confidence level of 95%.Results: The mean of percentage inhibition value of n-hexane extract ranged from 12.44 ± 1.66% to 39.82 ± 1.33%, 70% of ethanol extract rangedfrom 39.98 ± 0.85% to 70.19 ± 1.98%, and ethyl acetate extract ranged from 17.85 ± 0.78% to 60.30 ± 0.97%. Kojic acid has mean percentageinhibition value of 78.19 ± 1.97%. IC50 of ethanol, ethyl acetate, and n-hexane extracts was, respectively, 40.53 μg/ml, 63.49 μg/ml, and 91.95 μg/ml.Ethanol extract contains flavonoid, tannin, and saponin. Ethyl acetate extract contains flavonoid.Conclusion: All various solvents of peanut shell extracts have anti-tyrosinase activity but not better than kojic acid. Ethanol extract with concentrationof 75 μg/ml has the greatest anti-tyrosinase activity.

scholarly journals Antioxidant Activity of n-Hexane, Ethyl Acetate and Ethanol Extract from Lakoocha Leaves (Artocarpus lacucha Buch.-Ham) using DPPH Method

2018 ◽  
Vol 1 (2) ◽  
pp. 41-47
Author(s):  
Poppy Anjelisa Zaitun Hasibuan ◽  
Mardiana
Keyword(s):  
Antioxidant Activity ◽  
Ethyl Acetate ◽  
Ethyl Acetate Extract ◽  
Radical Scavenging ◽  
Ethanol Extract ◽  
Positive Control ◽  
Hexane Extract ◽  
Phytochemical Screening ◽  
Ic50 Value ◽  
Dpph Method

This study aimed to investigate phytochemical screening and antioxidant activity of n–hexane, ethyl acetate and ethanol extract from lakoocha leaves. The powdered simplicia was macerated with n–hexane, ethyl acetate and ethanol 96% successively, filtered, then concentrated using rotary evaporator to obtain n–hexane extract, ethyl acetate extract and ethanol extract. Phytochemical screening and antioxidant activity was performed against these extracts. Antioxidant activity was determined by DPPH (1,1-diphenyl-2-picrylhydrazyl) radical scavenging method using ultraviolet-visible spectrophotometer at wavelength of 516 nm after incubated for 60 minutes in dark place. Quercetin was used as positive control. The result of phytochemical screening showed n-hexane extract contains steroid, ethyl acetate extract contain steroid, tannin, glycoside, flavonoid and saponin, whereas ethanol extract contain tannin, glycoside, flavonoid and saponin. The IC50 value of n–hexane, ethyl acetate and ethanol extract was 1062.03±1.42 ppm, 323.18±0.02 ppm and 99.23±0.07 ppm respectively, whereas for quercetin was 2.32±0.01 ppm. This study showed that ethanol extract had antioxidant activity with strong category whereas n-hexane extract and ethyl acetate extract had inactive antioxidant activity with very weak categories.       Keyword: Antioxidant Activity, DPPH, Lakoocha leaf

scholarly journals POTENSI ANTI OKSIDAN DAN ANTI BAKTERI Chromolaena odorata TERHADAP Vibrio harveyi PENYEBAB PENYAKIT BLACK BODY SYNDROME PADA KAKAP PUTIH (Lates calcarifer)

2021 ◽  
Vol 16 (2) ◽  
pp. 117
Author(s):  
Nurbariah Nurbariah ◽  
Sukenda Sukenda ◽  
Muhammad Zairin Junior ◽  
Sri Nuryati ◽  
Dinamella Wahjuningrum
Keyword(s):  
Ethyl Acetate ◽  
Leaf Extract ◽  
Vibrio Harveyi ◽  
Ethanol Extract ◽  
Black Body ◽  
Total Flavonoid ◽  
Chromolaena Odorata ◽  
Asian Seabass ◽  
Antibacterial Potential

Kandungan bahan bioaktif pada tanaman memiliki beragam potensi aktivitas biologis dan dimanfaatkan dalam budidaya ikan sebagai alternatif untuk pencegahan dan pengobatan penyakit ikan. Serapoh (Chromolaena odorata) diketahui memiliki bahan bioaktif namun penerapan untuk pencegahan dan pengobatan penyakit pada kakap putih belum pernah diteliti. Penelitian ini bertujuan untuk mengevaluasi potensi antioksidan dan antibakteri daun serapoh secara in vitro terhadap Vibrio harveyi penyebab penyakit black body syndrome pada benih kakap putih. Penelitian secara in vitro melingkupi analisis fitokimia, uji antioksidan dan antibakteri. Hasil uji menunjukkan bahwa ekstrak daun serapoh mengandung flavonoid, tannin, saponin, dan steroid. Rendemen dari hasil maserasi dengan pelarut akuades, etanol, etil asetat, dan n-heksan berturut-turut adalah 11,34%; 9,13%; 4,21%; dan 1,48%. Ekstrak etil asetat memiliki kandungan total fenol yang tertinggi (212,8 mg/g) dibanding ekstrak yang lain. Kandungan total flavonoid yang tertinggi terdapat pada ekstrak etanol (195,5 mg/g) diikuti dengan ekstrak etil asetat (20,2 mg/g), n-heksan (10,6 mg/g), dan akuades (8,1 mg/g). Nilai potensi antioksidan ekstrak etanol lebih tinggi (86,59%) dibanding ekstrak yang lain namun potensi antioksidan ekstrak etanol, etil asetat, dan akuades tidak berbeda nyata dengan asam askorbat sebagai pembanding. Ekstrak etanol, etil asetat, dan n-heksan dapat menghambat pertumbuhan V. harveyi. Ekstrak etanol bersifat bakteriostatik (1,25 mg/mL) dan bakterisidal (5 mg/mL), serta menyebabkan kerusakan sel sehingga metabolit seluler seperti asam nukleat dan protein dapat keluar dari sel. Hasil penelitian menunjukkan bahwa ekstrak daun serapoh memiliki potensi antioksidan dan antibakteri terhadap V. harveyi sehingga dapat digunakan untuk pencegahan dan pengobatan penyakit black body syndrome pada benih kakap putih.Bioactive compounds in plants have various potential biological activities and are commonly used in fish farming as alternatives to prevent and treat fish diseases. Serapoh (Chromolaena odorata) is known to have bioactive compounds, yet its application to prevent disease in Asian seabass has not been studied. This study aimed to evaluate the antioxidant and antibacterial potential of serapoh leaves in vitro against Vibrio harveyi, causing black body syndrome disease in Asian seabass. The performed tests in this study consisted of phytochemical analysis, antioxidant, and antibacterial tests. The results showed that serapoh leaf extract contains flavonoids, tannins, saponins, and steroids. The yields obtained from maceration with aquadest, ethanol, ethyl acetate, and n-hexane solvents were 11.34%; 9.13%; 4.21%; and 1.48%, respectively. Ethyl acetate extract had the highest total phenol content (212.8 mg/g) compared to the other extracts. Ethanol extract has the highest total flavonoid content (195.5 mg/g) followed by ethyl acetate (20.2 mg/g), n-hexane (10.6 mg/g), and aquadest (8.1 mg/g). The highest antioxidant potential value was shown by ethanol extract (85.59%), but the antioxidant potentials of ethanol, ethyl acetate, and aquadest extracts were not significantly different from ascorbic acid. Ethanol, ethyl acetate, and n-hexane extracts can inhibit the growth of V. harveyi. Ethanol extract has bacteriostatic (1.25 mg/mL) and bactericidal (5 mg/mL) properties. The exposure of V. harveyi to ethanol extract resulted in cellular damage that can release cellular metabolites such as nucleic acids and proteins. In conclusion, serapoh leaf extract had antioxidant and antibacterial potential against V. harveyi and could be used to prevent or treat black body syndrome in Asian seabass.

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