UJI AKTIVITAS ANTIOSIDAN MIKROALGA SPIRULINA PLATENSIS DENGAN METODE DPPH DAN FRAP

NABIILA, JIHAAN and Agustiarini, Vitri and Mulyani, Laida Neti (2023) UJI AKTIVITAS ANTIOSIDAN MIKROALGA SPIRULINA PLATENSIS DENGAN METODE DPPH DAN FRAP. Undergraduate thesis, Sriwijaya University.

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Abstract

Spirulina platensis contains flavonoids and carotenoids which have pharmacological activity as antioxidants. This study aims to determine the content of phenolic and carotenoid compounds and antioxidant activity contained in Spirulina platensis microalgae using the DPPH (1,1-diphenyl-2-pikrihidrazyl) and FRAP (Ferric-Reducing Antioxidant Power) methods. The content of phenolic compounds obtained were total phenols and flavonoids of 7.25 mg GAE/g and 13.59 mg QE/g and carotenoid beta carotene of 1.771 mg/g. The IC50 value of Spirulina platensis microalgae extract obtained by the DPPH method was 240.931 µg/mL and by the FRAP method was 1431.008 µg/mL. The results of this study indicate that the FRAP method affects the IC50 value of the extract due to the process of reducing the reduction of antioxidant compounds due to acid protonation. Based on the research, it was concluded that the extract of Microalgae Spirulina platensis has potential as an antioxidant with weak antioxidant activity.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Spirulina platensis, FRAP
Subjects:	R Medicine > RS Pharmacy and materia medica > RS1-441 Pharmacy and materia medica R Medicine > RS Pharmacy and materia medica > RS189-190 Assay methods. Standardization. Analysis
Divisions:	08-Faculty of Mathematics and Natural Science > 48201-Pharmacy (S1)
Depositing User:	Jihaan Nabiila
Date Deposited:	29 May 2023 02:48
Last Modified:	29 May 2023 02:48
URI:	http://repository.unsri.ac.id/id/eprint/105639

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