IDENTIFIKASI KANDUNGAN FITOKIMIA DAN AKTIVITAS ANTIOKSIDAN EKSTRAK ETANOL TALI PUTRI (Cuscuta australis) PADA KETINGGIAN TEMPAT YANG BERBEDA

Rangga, Arnelio (2025) IDENTIFIKASI KANDUNGAN FITOKIMIA DAN AKTIVITAS ANTIOKSIDAN EKSTRAK ETANOL TALI PUTRI (Cuscuta australis) PADA KETINGGIAN TEMPAT YANG BERBEDA. S2 thesis, Univeristas andalas.

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Abstract

Tali putri (Cuscuta australis) is a parasitic weed that obtains nutrients, water, and minerals from its host plants to sustain its life. One of the host plants that is easily parasitized by tali putri is rumput israel (Asystasia gangetica), due to its soft stem tissue, which allows the haustorial structures of tali putri to more easily absorb nutrients from the host. Despite being harmful as a parasitic plant, tali putri has potential health benefits due to its content of secondary metabolites and antioxidant activity, which play important roles in the treatment of various diseases.This study aimed to examine the effect of altitude on the phytochemical content, antioxidant activity, moisture content, and ash content of tali putri and its host plant. The research was conducted using a survey method at three different altitudinal zones: lowland, mid-altitude, and highland, with seven replications at each altitude. The analyses were carried out at the Plant Physiology Laboratory, Faculty of Agriculture, Andalas University, and the Laboratory of the Higher Education Service Institute (LLDIKTI). This study employed a survey method with elevation categorized as lowland, midland, and highland. Data were analyzed using analysis of variance (ANOVA) with an F-test under a Completely Randomized Design (CRD), where the treatment was the difference in elevation. If the calculated F-value exceeded the F-table value at the 5% significance level, the analysis was continued using Duncan’s New Multiple Range Test (DNMRT). The results showed that tali putri growing in the highland exhibited the best antioxidant activity, moisture content, and ash content, with values of 173.35 µg/ml, 9.06%, and 5.16%, respectively. Likewise, rumput israel growing in the highland showed the highest antioxidant activity, moisture content, and ash content, recorded at 64.39 µg/ml, 8.82%, and 7.07%, respectively. Altitude did not affect the phytochemical composition of tali putri and rumput israel, both of which were found to contain flavonoids, alkaloids, phenolics, terpenoids, and triterpenoids.

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