Production and characterization of functional substances from a by-product of rice bran oil and protein production by a compressed hot water treatment

Jintana Wiboonsirikul, Yukitaka Kimura, Yumi Kanaya, Takuo Tsuno, Shuji Adachi

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

A by-product of rice bran oil and protein production was treated with water and compressed hot water at 20°C to 260°C for 5 min, and at 200°C and 260°C for 5 to 120 min. Each extract was evaluated for its yield, radical scavenging activity, carbohydrate, protein, total phenolic and furfural contents, molecular-mass distribution and antioxidative activity. The maximum yield was obtained at 200°C. The radical scavenging activity and the protein, total phenolic and furfural contents of the extract increased with increasing temperature. However, the carbohydrate content abruptly decreased when treated at above 200°C. The extract treated at 260°C for 5 min exhibited suppressive activity toward the autoxidation of linoleic acid. Each extract obtained at temperatures lower than or equal to 200°C exhibited emulsifying ability.

Original languageEnglish
Pages (from-to)384-392
Number of pages9
JournalBioscience, Biotechnology and Biochemistry
Volume72
Issue number2
DOIs
Publication statusPublished - Mar 13 2008
Externally publishedYes

Keywords

  • Antioxidative activity
  • Compressed hot water
  • Emulsifying ability
  • Radical scavenging activity
  • Rice bran

ASJC Scopus subject areas

  • Biotechnology
  • Analytical Chemistry
  • Biochemistry
  • Applied Microbiology and Biotechnology
  • Molecular Biology
  • Organic Chemistry

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