Production Optimization of the Extract with High Phenolic Content and Radical Scavenging Activity from Defatted Rice Bran by Subcritical Water Treatment

Jintana Wiboonsirikul, Pramote Khuwijitjaru, Yukitaka Kimura, Hisahiro Morita, Takuo Tsuno, Shuji Adachi

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

The optimum conditions for subcritical water treatment to produce an extract with a high phenolic content and radical scavenging activity from defatted rice bran were determined using response surface methodology. The effects of the weight ratio of bran to water from 0.05 to 0.2 and treatment time from 20 to 120 min on the total phenolic content and DPPH radical scavenging activity were evaluated using the Design-Expert program. Both the total phenolic content and DPPH radical scavenging activity increased with an increase in the bran/water ratio, but decreased with the treatment time. The optimum bran/water ratio and treatment time were 0.2 and 20 min, respectively, to attain a relatively highest total phenolic content and DPPH radical scavenging activity.

Original languageEnglish
Pages (from-to)311-315
Number of pages5
Journalnihon shokuhin kougakukaishi (japan journal of food engineering)
Volume8
Issue number4
DOIs
Publication statusPublished - 2007

Keywords

  • DPPH radical scavenging activity
  • Response surface methodology
  • rice bran
  • subcrical water
  • total phenolic content

ASJC Scopus subject areas

  • Food Science
  • Industrial and Manufacturing Engineering

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