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Immunomodulatory Activities of Oat Bran Extracts with Different Extraction Conditions  

Park, Hee-Joeng (Department of Food Science and Technology, Chungbuk National University)
Kim, Yun-Bae (College of Veterinary Medicine, Chungbuk National University)
Kang, Tae-Su (Department of Food Science and Biotechnology, Chungbuk Provincial University)
Jung, Ick-Soo (Technical Research Institute, Bolak Company Limited)
Kim, Kwang-Yup (Department of Food Science and Technology, Chungbuk National University)
Jeong, Heon-Sang (Department of Food Science and Technology, Chungbuk National University)
Publication Information
Korean Journal of Food Science and Technology / v.37, no.1, 2005 , pp. 103-107 More about this Journal
Abstract
Immunomodulatory activities of crude ${\beta}$-glucans extracted from oat bran under different conditions, fractions A ($55^{\circ}C,\;5%,\;pH\;6$), B ($45^{\circ}C,\;15%,\;pH\;6$), C ($50^{\circ}C,\;20%,\;pH\;7$), D ($50^{\circ}C,\;0%,\;pH\;7$), and E ($50^{\circ}C,\;10%,\;pH\;9$) were investigated. All crude ${\beta}$-glucan fractions stimulated macrophages, producing nitric oxide dose-dependently, and, efficiently promoted nitric oxide production in presence of IFN-${\gamma}$. Except for fraction C, in vivo test indicated fractions B, D, and E (100 mg/kg) substantially enhanced carbon-phagocytic indices of blood macrophages by oral administration of crude ${\beta}$glucan for 7 days prior to carbon injection. These immunomodulatory effects could be determined with extraction conditions of crude ${\beta}$-glucan.
Keywords
oat bran; crude ${\beta}$-glucan; murine peritoneal macrophages; nitric oxide; carbon clearance;
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