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Journal : Pharmaceutical Reports

Comparison of Antioxidant Activity Based on Temperature Variables of Avocado Seed Extract from Maumere by 1,1-Diphenyl-2-Picrylhdrazy Method Pratama, Mamat; Kusuma, Andi Trihadi; Rahmat, Sri Rahayu; Safitri, Dewi; Efendi, Nurmaya
Pharmaceutical Reports Vol 3, No 2 (2024): (October) Pharmaceutical Reports
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/pharmrep.v3i2.308

Abstract

Avocados are plants that can grow well in tropical environments like Indonesia. People love this fruit because of its high antioxidant content and its delicious taste. The aim of this study was to measure the antioxidant activity of three extracts of ethyl acetate of avocado seeds (Percea americana Mill.) using the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging method. The measurement was done using a quersetin as a reference standard with a maximum wavelength of 516 nm. The results of the study showed that the sample's half inhibitory concentration (IC50) value was 1,653.89 g/mL, 1,202.56 g/ mL, and 903.08 g/mL for two, four, and six hours, respectively.
Determination of Total Flavonoid Content of Red Fruit Juice (Pandanus conoideus Lam) by a UV–Vis Spectrophotometer Sulaeman, Nur Rachmi; Pratama, Mamat; Kusuma, Andi Trihadi
Pharmaceutical Reports Vol 4, No 1 (2025): (March) Pharmaceutical Reports
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/pharmrep.v4i1.360

Abstract

Red fruit (Pandanus conoideus Lam) belongs to the pandanacea family. This plant contains compounds such as tannins, flavonoids, steroids, triterpenoids and alkaloids and has properties in curing various diseases such as diabetes, coronary heart disease, hypertension, cancer and HIV/AIDS. This study aims to determine the total flavonoid content of red fruit juice (Pandanus conoideus Lam) using a UV - Vis spectrophotometer. The stages carried out in this research began with sample preparation, qualitative testing of flavonoid compounds and determining the total flavonoid content of red fruit (Pandanus conoideus Lam) samples. The results obtained in this study based on a qualitative test using NaOH reagent stated that red fruit juice (Pandanus conoideus Lam) was positive for containing flavonoids and in a quantitative test using a UV - Vis spectrophotometer the percent concentration obtained in the red fruit juice sample was 8.7258%.