PENETAPAN KADAR FLAVONOID TOTAL PADA EKSTRAK KACANG KEDELAI PUTIH (Soja max piper) DENGAN METODE SPEKTROFOTOMETRI UV-VISIBEL

Hikmatul, Lutfiana Hafidah (2018) PENETAPAN KADAR FLAVONOID TOTAL PADA EKSTRAK KACANG KEDELAI PUTIH (Soja max piper) DENGAN METODE SPEKTROFOTOMETRI UV-VISIBEL. Diploma thesis, Sekolah Tinggi Ilmu Kesehatan Nasional.

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Abstract

Soybean is one of the plants of the family Fabaceae scattered in the tropics, including Indonesia. Soybeans contain chemical compounds that can be used as a traditional medicine. The aim of the researcher is to know the total flavonoid level in white soybean (Soja max piper) with UV-Visible spectrophotometric method. The method used in the research determination of total flavonoid content in white soybean extract by UV-Visible Spectrophotometric method. Identification of flavonoids using concentrated HCl reagents and magnesium metals to detect the presence or absence of flavonoids contained in the sample in the presence of color change. The results of determination of total flavonoid content contained in the extract of white bean seed with an average flavonoid level of 0.11425 ppm. The identification of flavonoids with concentrated HCl reagents and magnesium metals leads to a red color change that signifies positive samples containing flavonoids.

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