Bioactives from Crude Rice Bran Oils Extracted Using Green Technology

  • Donporn Wongwaiwech
    Department of Agro-Industry, Rajamangala University of Technology Lanna Tak, 41/1 Moo 7, Mai Ngam, Mueang, Tak 63000, Thailand
  • Sudthida Kamchonemenukool
    Department of Agro-Industry, Naresuan University, 99 Moo 9, Tha Pho, Mueang, Phitsanulok 65000, Thailand
  • Chi-Tang Ho
    Department of Food Science, Rutgers University, 65 Dudley Road, New Brunswick, NJ 08901, USA
  • Shiming Li
    Department of Food Science, College of Life Sciences, Huanggang Normal University, Huanggang 438000, China
  • Nutthaporn Majai
    Department of Agro-Industry, Naresuan University, 99 Moo 9, Tha Pho, Mueang, Phitsanulok 65000, Thailand
  • Tepsuda Rungrat
    Department of Agricultural Science, Faculty of Agriculture, Natural Resources and Environment, Naresuan University, 99 Moo 9, Tha Pho, Mueang, Phitsanulok 65000, Thailand
  • Kawee Sujipuli
    Department of Agricultural Science, Faculty of Agriculture, Natural Resources and Environment, Naresuan University, 99 Moo 9, Tha Pho, Mueang, Phitsanulok 65000, Thailand
  • Min-Hsiung Pan
    Institute of Food Science and Technology, National Taiwan University, No.1, Section 4, Roosevelt Road, Taipei 10617, Taiwan
  • Monthana Weerawatanakorn
    Department of Agro-Industry, Naresuan University, 99 Moo 9, Tha Pho, Mueang, Phitsanulok 65000, Thailand

抄録

<jats:p>Crude rice bran oils from different rice cultivars and extraction methods bear different contents of nutraceuticals. The health benefits of lowering cholesterol activity of rice bran oil being confirmed by many reports are partly attributed to non-nutrient nutraceuticals, especially γ-oryzanol, phytosterols, and policosanols. As the world has been facing the global warming crisis, green extraction technology is gaining attention from many sectors. The current study aims to compare the nutraceutical composition with respect to γ-oryzanol, phytosterol, and policosanol content as well as the antioxidant properties of crude rice bran oils extracted from white and red rice bran using three green technologies, comparing with conventional hexane extraction. The data show that the traditional solvent extraction gave the highest oil yield percentage (26%), but it was not significantly different from subcritical liquefied dimethyl ether extraction (24.6%). Subcritical liquefied dimethyl ether extraction gave higher oil yield than supercritical CO2 extraction (15.5–16.2%). The crude rice bran oil extracted using subcritical liquefied dimethyl ether extraction produced the highest total phenolic contents and antioxidant activities. The highest γ-oryzanol content of the crude rice bran oil was found in oil extracted by conventional cold press (1370.43 mg/100 g). The γ-oryzanol content of the oil obtained via subcritical liquefied dimethyl ether extraction was high (1213.64 mg/100 g) compared with supercritical CO2 extraction. The red rice bran yielded the crude rice bran oil with the highest total phytosterol content compared with the white bran, and the oil from red rice bran extracted with subcritical liquefied dimethyl ether generated the highest total phytosterol content (1784.17 mg/100 g). The highest policosanol content (274.40 mg/100 g) was also found in oil obtained via subcritical liquefied dimethyl ether extraction.</jats:p>

収録刊行物

  • Molecules

    Molecules 28 (6), 2457-, 2023-03-07

    MDPI AG

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