PERBANDINGAN KADAR FLAVONOID TOTAL EKSTRAK ETANOL DAN INFUSA DAUN SALAM (Syzygium polyanthum) SECARA SPEKTROFOTOMETRI UV-Vis

Rehniwulan, Ningtyas (2019) PERBANDINGAN KADAR FLAVONOID TOTAL EKSTRAK ETANOL DAN INFUSA DAUN SALAM (Syzygium polyanthum) SECARA SPEKTROFOTOMETRI UV-Vis. Diploma thesis, Sekolah Tinggi Ilmu Kesehatan Nasional.

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Abstract

Bay leaves contain a chemical composition that can be used as traditional medicine. The purpose of this research was to study the total flavonoid level in extracts and infusion of bay leaves (Syzygium polyanthum) by UV-Vis spectrophotometry method. The method used in the research of the determination of total flavonoids in the extract and leaf infusion of UV-Vis spectrophotometry. Identification of flavonoid with alkali test using NaOH reagent and Wilstater Cyanidin test using concentrated Mg and HCL metal reagents to compare the absence of available flavonoid in the sample with discoloration. The results of the study contained flavonoid compositions which showed thick extracts and bay leaf infusions which positively contained flavonoid. The results of the determination of total flavonoid level contained in the extract and bay leaf infusion with an average concentration of thick extract flavonoids of 1.6531% b/b ± 0,0594 and infusa extract of 0.9173% b/b ± 0,0380. The comparison test with the Independent Samples Test analysis showed that there was a significant difference between the total flavonoid content of ethanol extract and the infusion of bay leaves.

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