Karakterisasi Senyawa Fitokimia dan Aktivitas Antioksidan Ekstrak Etanol Umbi Gembili (Dioscorea esculenta)
(1) Program Studi Teknologi Pangan Universitas Muhammadiyah Palembang, Sumatera Selatan
(*) Corresponding Author
Abstract
Lesser yam (Dioscorea esculenta) is one of the Indonesian local food resources with potential as a source of natural bioactive compounds. This study aimed to evaluate the effect of different extract concentrations on tannin, alkaloid, steroid contents, and antioxidant activity using the ABTS method.
The study employed a Completely Randomized Design (CRD) with five extract concentrations (1000, 1500, 2000, 2500, and 3000 ppm), each with three replications. Phytochemical analyses included tannin, alkaloid, and steroid determination, while antioxidant activity was evaluated using the ABTS.
The results showed that increasing extract concentration significantly (p < 0.05) increased tannin, alkaloid, and steroid contents. Antioxidant activity also increased with higher extract concentrations, as indicated by higher ABTS radical scavenging activity. The highest antioxidant activity was observed at 3000 ppm.
It can be concluded that lesser yam extract has potential as a natural antioxidant source influenced by its phytochemical composition. These findings support the utilization of Dioscorea esculenta as a functional food ingredient derived from local resourcesKeywords
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