Antioxidant Activity of Red Rice (Oryza Nivara. L) Through the DPPH (2,2-Diphenyl-1pilkrilhidrazil) Method

Lia Puspitasari, Made Dira, Ni Dari

2022

Abstract

Free radicals are one of the causes of various degenerative disease that can be overcome with the use of antioxidant. One antioxidant source is a plant that contains high polyphenol and flavonoids. Red rice (Oryza nivara L.) is known to be rich in anthocianin pigment, polyphenol, flavonoids, protein, and vitamins. Due to these contents, red rice was developed to be tea, as a drink consumed for the treatment of some degenerative diseases. Antioxidant activity tests were conducted on red rice tea harvested and processed from Apuan, Baturiti, Tabanan, Bali. The antioxidant activity test utilized the DPPH method by observing colour changes after DPPH incubation. If all DPPH electrons paired with electrons from red rice samples, the sample colour changed from dark purple to bright yellow. The absorbed sample was then measured with a Uv-Vis-spectrophotometer in 515.6 nm. Infused red rice tea had an IC level of 50 for 3,635.72 ppm with the regression equation y = 13.328x – 1.5431 and r2 = 0.9834. It can be concluded that infused red rice tea had weak antioxidant activity.

Paper Citation

in Harvard Style

Puspitasari L., Dira M. and Dari N. (2022). Antioxidant Activity of Red Rice (Oryza Nivara. L) Through the DPPH (2,2-Diphenyl-1pilkrilhidrazil) Method. In Proceedings of the 2nd Bali Biennial International Conference on Health Sciences - Volume 1: Bali BICHS; ISBN 978-989-758-625-5, SciTePress, pages 5-7. DOI: 10.5220/0011937600003576

in Bibtex Style

@conference{bali bichs22,
author={Lia Puspitasari and Made Dira and Ni Dari},
title={Antioxidant Activity of Red Rice (Oryza Nivara. L) Through the DPPH (2,2-Diphenyl-1pilkrilhidrazil) Method},
booktitle={Proceedings of the 2nd Bali Biennial International Conference on Health Sciences - Volume 1: Bali BICHS},
year={2022},
pages={5-7},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0011937600003576},
isbn={978-989-758-625-5},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 2nd Bali Biennial International Conference on Health Sciences - Volume 1: Bali BICHS
TI - Antioxidant Activity of Red Rice (Oryza Nivara. L) Through the DPPH (2,2-Diphenyl-1pilkrilhidrazil) Method
SN - 978-989-758-625-5
AU - Puspitasari L.
AU - Dira M.
AU - Dari N.
PY - 2022
SP - 5
EP - 7
DO - 10.5220/0011937600003576
PB - SciTePress