Effect of rice bran storage on the antioxidant activity of a hydrophilic extract
Enny Purwati Nurlaili1), Sri Hartati2), Retno Widyastuti2) dan Febbi Nurahmawati2)
1)Study Program of Agricultural Product Technology, Faculty of Agricultural Technology, Universitas 17 Agustus 1945 Semarang, Jl. Pawiyatan Luhur Bendan Dhuwur Semarang
2)Study Program of Agricultural Product Technology, Faculty of Agricultural, Universitas Veteran Bangun Nusantara Sukoharjo, Jl. Letjend S. Humardani No. 1 Sukoharjo 57521
Abstract
The utilization of rice bran in rice milling in Java, in general, is not as soon as after leaving the mill. The research aims to determine whether the duration of rice bran storage affects the antioxidant activity, yield and total phenols of hydrophilic extracts. The study was conducted with rice bran treatment stored for 0, 1, and 2 weeks. Each sample was extracted hydrophilic component with ethanol solvent. The extracts obtained were tested including yield, total phenol, and antioxidant activity. The results showed that the increase in yield experienced a significant difference, especially in the second week. Total phenol and antioxidant activity increased significantly in the first week and decreased again in the second week. The conclusions from this study indicate that the duration of rice bran storage needs to be considered the optimal limit.
Keywords: antioxidant activity, hydrophilic extracts, rice bran, total phenols, yield
Topic: Agricultural Engineering