Epi Supri Wardi

Total Phenolic Content and Antioxidant Activity of Ethanolic Extract from Cotton Fruit Peel (Gossypium hirsutum L.)

Epi Supri Wardi, BA Martinus, Riska Fauziah, Yuliawati & Bastian Nova · Asian Journal of Research in Biochemistry · 2026

Background and Aims: Cotton (Gossypium hirsutum L.), a plant in the Malvaceae family, contains a number of secondary metabolites with antioxidant qualities, such as flavonoids, tannins, saponins, and steroids. This study aims to determine the total phenolic content and antioxidan...

Open access Research Article 10.9734/ajrb/2026/v16i1474

Determination of Total Tannin Content and Antioxidant Activity of the Ethanol Extract from Senduduk Leaves (Melastoma malabathricum L.)

Epi Supri Wardi, Roslinda Rasyid, Maida Soniamarta, Yuliawati & Bastian Nova · Asian Journal of Research in Biochemistry · 2025

Background: Antioxidants are molecules capable of donating one or more electrons to free radicals, thereby stabilizing and neutralizing them. By doing so, antioxidants help protect the body from oxidative stress and its associated health risks. Aims: This study aims to determine...

Open access Research Article 10.9734/ajrb/2025/v15i4411

Antioxidant Activity of Ethyl Acetate Extract from Endohytic Bacteria of Mangosteen (Garcinia mangostana L.) Roots

Bastian Nova, Epi Supri Wardi, Ria Afrianti & Aldo Maihendra · Asian Journal of Research in Biochemistry · 2024

Aims: This study aims to obtain isolates of endophytic bacteria found in mangosteen roots, determine information regarding the chemical contents of secondary metabolites from endophytic bacteria, and obtain antioxidant activity data using the DPPH (1,1-Diphenyl-2-Picrylhydrazyl)...

Open access Research Article 10.9734/ajrb/2024/v14i4291