2020
DOI: 10.35799/pha.9.2020.30033
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UJI AKTIVITAS ANTIOKSIDAN EKSTRAK ETANOL ASCIDIAN Herdmania Momus DENGAN METODE DPPH (1,1-difenil-2-pikrilhidrazil)

Abstract: Ascidian Herdmania momus is one of the components of coral reef biota that has bioactive potential. Bioactive compounds function as self-defense and also function for human life, one of which can be used as a source of antioxidants. The purpose of this study is to determine the antioxidant activity from the ethanol extracts of the Ascidian Herdmania momus. Ascidian Herdmania momus was extracted using maceration method with ethanol as a solvent. As a parameter, testing of antioxidant activity was carried out by… Show more

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Cited by 22 publications
(25 citation statements)
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“…This method was chosen because it is simple, easy, fast, sensitive, and requires only small sample. The comparator used in this method is vitamin C because it functions as a secondary antioxidant that has free hydroxy groups that act as free radical scavengers, and has very high antioxidant activity (Damanis et al, 2020). As an initial step, the maximum wavelength is determined first using a blank solution with a wavelength range of 400-800nm using a UV-Vis spectrophotometer.…”
Section: Antioxidant Activitymentioning
confidence: 99%
“…This method was chosen because it is simple, easy, fast, sensitive, and requires only small sample. The comparator used in this method is vitamin C because it functions as a secondary antioxidant that has free hydroxy groups that act as free radical scavengers, and has very high antioxidant activity (Damanis et al, 2020). As an initial step, the maximum wavelength is determined first using a blank solution with a wavelength range of 400-800nm using a UV-Vis spectrophotometer.…”
Section: Antioxidant Activitymentioning
confidence: 99%
“…Metode DPPH yaitu dengan mengukur daya peredaman ekstrak terhadap DPPH (1,1-difenil-2-pikrilhidrazil) yang merupakan radikal bebas. DPPH akan bereaksi dengan atom hidrogen yang terdapat dalam antioksidan dan membentuk DPPH yang stabil (Faisal, 2019). Selain itu digunakan juga metode ABTS (2,2'azino-bis(3ethylbenzathiazolin-6-sulfonic acid) yang merupakan metode eksperimental untuk mengukur jumlah radikal bebas yang dapat ditangkap oleh antioksidan yang dikenal dengan aktivitas antioksidan (Serlahwaty and Sevian, 2016).…”
Section: E Aktivitas Antioksidanunclassified
“…Prinsip dasar metode ini adalah penangkapan radikal hidrogen dari sampel yang diujikan kepada radikal bebas DPPH, sehingga akan menjadi senyawa non radikal yang diketahui dari perubahan warnanya dari ungu pekat menjadi kuning [36] Berdasarkan Tabel 5 diketahui bahwa, jika konsentrasi sampel yang digunakan semakin besar, maka nilai absorbansinya akan semakin kecil dan berbanding terbalik dengan nilai persen inhibisi yang didapatkan semakin besar. Sesuai dengan pernyataan Damanis [37] yang menjelaskan bahwa presentase inhibisi akan semakin besar seiring dengan bertambahnya konsentrasi sampel. Persen inhibisi menyatakan kemampuan dari suatu ekstrak dalam memperhambat aktivitas radikal yang dihubungkan dengan konsentrasi ekstrak [5].…”
Section: Hasil Uji Aktivitas Antioksidanunclassified