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<p>This study analyzed the chemosensory and metabolite profiles of rice bran oil (RBO) using an E-tongue (electronic tongue), an E-nose (electronic nose), high-performance liquid chromatography (HPLC), and gas chromatography (GC). The results demonstrated that total phenolic content (TPC) and total flavonoid content (TFC) significantly increased with roasting, while <i>γ</i>-oryzanol showed a decreasing trend. The fatty acids identified in RBOs were palmitic acid (C16:0), oleic acid (C18:1), and linoleic acid (C18:2). Color analysis revealed a significant reduction in <i>L*</i>, <i>a*</i>, and <i>b*</i> values, with an increase in the browning index (BI) in roasted RBOs. E-tongue analysis indicated enhanced sourness, saltiness, sweetness, and bitterness in roasted RBOs. E-nose results showed increased ketones, pyrazines, alcohols, and furan derivatives upon roasting. Multivariate analysis confirmed a distinct separation between raw and roasted samples. This study contributes to reducing by-products and promoting sustainable agriculture, emphasizing the potential of RBO as a valuable resource.</p>

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Chemosensory and metabolite insights into roasted rice (Oryza sativa L.) bran oil: analyzing its flavor, bioactive potential, and sustainable utilization

  • 期刊论文

  • 发表日期：

    2025年7月29日

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  • Hyeonjin Park,
  • Younglan Ban,
  • Se Young Yu,
  • Hee Sung Moon,
  • Eui-Cheol Shin

摘要

This study analyzed the chemosensory and metabolite profiles of rice bran oil (RBO) using an E-tongue (electronic tongue), an E-nose (electronic nose), high-performance liquid chromatography (HPLC), and gas chromatography (GC). The results demonstrated that total phenolic content (TPC) and total flavonoid content (TFC) significantly increased with roasting, while γ-oryzanol showed a decreasing trend. The fatty acids identified in RBOs were palmitic acid (C16:0), oleic acid (C18:1), and linoleic acid (C18:2). Color analysis revealed a significant reduction in L*, a*, and b* values, with an increase in the browning index (BI) in roasted RBOs. E-tongue analysis indicated enhanced sourness, saltiness, sweetness, and bitterness in roasted RBOs. E-nose results showed increased ketones, pyrazines, alcohols, and furan derivatives upon roasting. Multivariate analysis confirmed a distinct separation between raw and roasted samples. This study contributes to reducing by-products and promoting sustainable agriculture, emphasizing the potential of RBO as a valuable resource.