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This study was aimed at finding out the antioxidant potential of mangrove Sonneratia albayoung leaf collected from Wori village, Wori district, North Sulawesi. The extract was obtained from dry powder of young leaf of S.albausing 2 extration methods (soxhlet and maceration), and2 solvents (methanol and ethanol). Phytochemical analyses were qualitatively done to detect the presence of phenols, flavonoid, tanin, steroid, triterpenoid,and alkaloid, total phenols using Folin Ciocalteau and antioxidants using DPPH (1-1-diphenil-2pikrihidrasil) method. Results found that the extract rendement was higher in soxhlet extraction using 9.77% methanol or 9.18% ethanol than in maceration method using 2.61% methanol and2.51% ethanol.Phytochemical analyses found that soxhlet extraction with either methanol or ethanol detected all phytochemical components tested, while maceration extraction did not detec the presence of alkaloid. The highest total phenol was recorded in the maceration extract with ethanol (34.2 mgGAE/g extract) followed by soxhlet extraction with methanol (33.6 mgGAE/g), metanol maceration (31.7 mgGAE/g), and ethanol maceration (28.6 mgGAE/g). Higher antioxidant activity was found in 2 samples macerated with ethanol (IC50 DPPH=5.01μg/mL) and sokhlet with methanol (IC50 DPPH=5.16μg/mL) than that of vitamin C (IC50 DPPH=5.21μg/mL), while 2 other samples had lower antioxidant activity than that of vitamin C, soxhlet ethanol extract (IC50 DPPH=6.23μg/mL) and methanol maceration (IC50=7.45μg/mL). As a whole, this study concluded that young leaf extract of S.albais potential as natural antioxidant source.

Phytochemical Content, Total Phenols, and Antioxidant Activity of MangroveSonneratia albaYoung Leaf Through Different Extraction Methods and Solvents