Effect of Subcritical Water-Treated Wheat Bran on Lipid Metabolism in Rats Fed High-Cholesterol Diets

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  • Wakita Yoshihisa
    Department of Product Innovation, Hyogo Prefectural Institute of Technology School of Humanities for Environmental Policy and Technology, Himeji Institute of Technology
  • Harada Osamu
    Department of Product Innovation, Hyogo Prefectural Institute of Technology
  • Suzuki Makoto
    School of Humanities for Environmental Policy and Technology, Himeji Institute of Technology
  • Kuwata Minoru
    Department of Product Innovation, Hyogo Prefectural Institute of Technology
  • Fujimura Taira
    Department of Product Innovation, Hyogo Prefectural Institute of Technology
  • Tsuji Keisuke
    School of Humanities for Environmental Policy and Technology, Himeji Institute of Technology

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Other Title
  • 高コレステロール食投与ラットの脂質代謝に及ぼす亜臨界水処理小麦フスマの影響
  • コウコレステロールショク トウヨ ラット ノ シシツ タイシャ ニ オヨボス アリンカイ スイ ショリ コムギ フスマ ノ エイキョウ

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Abstract

Wheat bran was hydrolyzed in subcritical water to increase the soluble dietary fiber (SDF). The SDF contents in wheat bran (WB) and subcritical water-treated wheat bran (SC-WB) were 10.4 and 23.2%, respectively, showing that SC-WB had about 2-fold higher SDF content than WB. Rats were fed a high-cholesterol (control) diet, or a control diet supplemented with WB (WB diet) or SC-WB (SC-WB diet) at 5% for 4 weeks. There were no significant differences in the concentrations of serum total cholesterol, HDL-cholesterol, and phospholipid among three groups. Although there was no significant difference between WB and SC-WB, both WB and SC-WB significantly prevented the elevation of serum triacylglycerol concentration and weight of mesenteric adipose (p<0.05). These results suggested that subcritical water treatment cause the increase of water soluble dietary fiber without the significant elevation of physiological activities for lipid metabolism.

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