ABSTRAKPenelitian ini bertujuan untuk menentukan senyawa antioksidan teh hijau dan menjelaskan efektifitas teh hijau daun mangrove sebagai anticholesterol pada mencit. Senyawa kimia bahan antioksidaan teh hijau pada daun mangrove Bruguiera gymnorrhiza, B. parviflora, Rhizophora stylosa, R. mucronata, Lumnitzera racemosa, Ceriops tagal dan C. decandra dianalisis dengan GCMS, sedangkan khasiat teh hijau daun mangroves sebagai antikolesterol di ujikan pada mencit. Hasil penelitian menunjukan bahwa senyawa bahan teh hijau bervariasi diantara daun mangrove yaitu polifenol sederhana ditemukan pada daun semua jenis mangrove yang menjadi sampel penelitian dengan konsentrasi yang bervariasi. Senyawa katekin hanya ditemukan pada daun mangrove Ceriops decandra, L. racemosa, R. mucronata dan R. apiculata. Di sisi lain, flavonoid terdeteksi hanya pada daun C. tagal, B. gymnorrhiza dan R. stylosa, sedangkan senyawa T-flavin hanya ditemukan pada daun B. parviflora. Teh hijau daun mangrove mampu menurunkan kadar kolesterol mencit dengan kisaran 33,33 sampai 53,67% mengindikasikan besarnya potensi daun mangrove sebagai bahan  teh hijau antikolesterol.Kata kunci: bahan teh hijau, polifenol sederhana, katekin, flavonoid, antikolesterol, daun mangroveABSTRACTThis study aimed to determine the antioxidant properties of green tea material in mangrove leaves and elucidate their capacity on reducing the cholesterol of mice. The chemical properties in  leaves of Bruguiera gymnorrhiza, B. parviflora, Rhizophora stylosa, R. mucronata, Lumnitzera racemosa, Ceriops tagal and C. decandra were analyzed by GCMS, while their capability as anticholesterol of mice were examined. The results showed that simple polyphenols were found in all sampled mangrove leaves with different concentration, while the chatechine was found only in leaves of four mangroves including Ceriops decandra, L. racemosa, R. mucronata and R. apiculata. On the other hand, flavonoids was detected only in leaves of C. tagal,  B. gymnorrhiza and R. stylosa. Meanwhile, T-flavine was detected only in leaves of B. parviflora. However, green tea material for all of sampled mangroves showed high capacity to reduce cholesterol of mice that ranging from 33.33% to 53.67%, which indicated high potentitiality of mangroves leaves as green tea material of anticholesterol.Keywords: Green tea material, simple polyphenol, cathechin, flavonoid, anticholesterol, Mangroves leaves

Vigna marina has potential to use as productive legume in salty areas of southeast Sulawesi. The study aimed to know the adaptation of V. marina grown under higher salinity condition, and elucidate their potential uses as salt tolerant legume in salty land. The germinated seeds were placed in polybags. Five polybags were taken as control, while five polybags watered by NaCl 200mM, and five polybags watered by NaCl 400mM for every day during 2 months. The dry biomass, chlorophyll and antioxidant (Vitamin C, anthocyanin and alkaloid) contents were determined. The results showed that dry biomass of marine bean was not significantly different among treatment indicating similar growth ability of marine bean at different treatment. On the other hand, the contents of chlorophyll a and chlorophyll b, as well as antioxidant were significantly higher at salinity concentration of NaCl 400mM, indicating higher salt concentration induced the marine bean to produce higher chlorophyll and antioxidant contents as mechanisms to grow and withstand in the salty land. Therefore, the results of this study indicated that this legume is salt tolerant and is potential to use as productive legume at coastal salty land.