KEDELAI HITAM (Glycine soja) TERHIDROLISIS SEBAGAI SUMBER FLAVONOID TOTAL

Abstract

Flavonoids are natural phenolic compounds found in almost all plants that have potential as antioxidants. Based on previous research, stating that black soybeans contain compounds of flavonoids. This analysis aims to establish the levels of total flavonoids on ethanol extract of black soybean hydrolyzed. Determination of total flavonoid levels of ethanol extract of black soybean hydrolyzed has been made with UV-Vis spectrophotometry method. Black soybean hydrolyzed using HCl and extracted using ethanol 70%. The extracts obtained were analyzed qualitative by the method of coloring reaction and quantitative analysis using UV-Vis spectrophotometer, where quercetin is used as a reference standard. Measurements were performed at maximum wavelength of 444.45 nm. The research showed the average level of total flavonoids is 11.83 mgQE / g extract or 1,163 %. In conclusion extract of black soybean hydrolyzed rich of total flavonoids, and it is related to the activity as antioxidant.

EFIKASI PEMBERIAN SUSU KACANG KEDELAI HITAM (Glycine soja) TERHADAP KADAR KOLESTEROL TOTAL LANSIA

“…Kadar flavonoid total yang terkandung dalam kedelai hitam sebesar 1,78 mg RE/g, lebih tinggi daripada kadar flavonoid total dalam kedelai kuning sebesar 0,57 mg RE/g. 11,12 Isoflavon berperan sebagai antioksidan, mampu meningkatkan kadar High Density Lipoprotein (HDL), berfungsi sebagai estrogenik, dan antiaterosklerosis. 8 Penggunaan susu kedelai dipilih sebagai salah satu bentuk olahan kedelai karena proses pembuatan susu kedelai lebih mudah dibandingkan produk olahan kedelai lainnya seperti tahu, tempe, dan yoghurt.…”

Cytotoxic effects of parijoto (Medinilla speciosa Reinw. Ex. Bl.) methanol extract combined with cisplatin on WiDr colon cancer cells through apoptosis induction

“…The absorbance value obtained from the PME was then calculated with linear regression. Quercetin levels measurement was carried out using UV-Vis spectrophotometry at 400-600 nm (Fawwaz et al 2017). Determination of the maximum wavelength en sures the wavelength required to produce maximum ab sorption.…”

Karakteristik Minuman Sinbiotik Soyghurt Kedelai Kuning (Glycine max ) dan Kedelai Hitam (Glycine soja L.) dengan Penambahan Inulin pada Konsentrasi yang Berbeda

“…Jenis kedelai dan interaksinya berpengaruh nyata sedangkan konsentrasi inulin tidak memberikan pengaruh nyata (Tabel 1). Penelitian yang dilakukan Fawwaz et al, (2017) menyatakan bahwa kedelai hitam memiliki kandungan senyawa antioksidan yang lebih tinggi dibandingkan kedelai kuning. Kandungan antioksidan dalam 100 gram kedelai hitam terdiri dari 222,49 mg antosianin dan 367,00 mg isoflavon (Dewi, 2017), sedangkan kedelai kuning memiliki kandungan sebesar 183 mg/100g (Sulistiani et al, 2010).…”