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Total phenol levels and antioxidant activity in whole limes from Palopo, Luwu Regency, as well as the relationship between total phenol content and antioxidant activity, were determined. Maceration of dried whole lime fruit yielded the methanol extract (Citrus aurentifolia). Phytochemical screening was used to determine the presence of alkaloids, phenolic compounds, and flavonoids in the extract’s secondary metabolites. The total phenol extract was determined using the Folin-Ciocalteu method, yielding a value of 8.37 mgGAE/g. Antioxidant activity was determined using the DPPH method, and the IC50 value was 1793.06 g/mL. Total phenol content of whole fruit extract lime and IC50 show a linear relationship y = -168,11x + 3211 with a determination R2 = of 0.9780.

Total Phenol Content and Activities of Antioxidant Extracts Methanol Limes(Citrus Aurentifolia)By Uv-Vis Spectrophotometry