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Study of Hydrolysis and Non-Hydrolysis Treatment of Rice Bran and The Solvent Type on antioxidant activity of hydrophilic extract
Sri Hartati1), Retno Widyastuti1), Indah Sanny Larasati1) and Enny Purwati Nurlaili2)

1)Study Program of Agricultural Product Technology, Faculty of Agricultural, Universitas Veteran Bangun Nusantara Sukoharjo, Jl. Letjend S. Humardani No. 1 Sukoharjo 57521

2)Faculty of Agricultural Product Technology Universitas 17 Agustus 1945 Semarang.


Abstract

Rice bran is known having bioactive antioxidant compounds that are hydrophilic and lipophilic. Rice bran extraction on hydrophilic bioactive compounds need to be optimized. This study aims to determine the impact of hydrolysis and non-hydrolysis treatments to bran as well as the solvent type on the antioxidant activity of hydrophilic bioactive compounds in bran extract. The study was conducted by varying the treatment of bran extraction to obtain the best hydrophilic extract. Variation in treatments include with or without hydrolyzing rice brans. In addition, there were variations on the solvent type to dissolve the hydrophilic bioactive compounds by using 96% of ethanol and ethyl acetate. Parameters of the observation consist of yield, total phenol and antioxidant activity scavenging free radicals (DPPH). The results showed that the treatment of hydrolyzed and un hydrolyzed rice brans and the solvent type provided a significant difference to the yield, total phenol and antioxidant activity of hydrophilic bioactive compounds from rice bran. The highest yield (1.72%), total phenol (12.37 mg EAG/g) and antioxidant activity (68.74%) were resulted from the bran treatment without hydrolysis and using ethanol as the solvent type. Extraction of hydrophilic bioactive compounds can be done by using a method without hydrolyzing the rice brand and using ethanol as the solvent.

Keywords: rice bran, bioactive compound, antioxidant, hydrophilic extract

Topic: Agricultural Engineering

Link: https://ifory.id/abstract/uzxtMETArkFQ

Conference: The 4th International Conference on Green Agro-industry UPN Veteran Yogyakarta (ICGAI 2019)

Plain Format | Corresponding Author (Sri Hartati)

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