Journal
FOOD CHEMISTRY
Volume 132, Issue 2, Pages 739-743Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2011.11.010
Keywords
GC/MS; Immunomodulatory activity; Dictyophora indusiata; Polysaccharide
Funding
- National Natural Science Foundation of China [31071638]
- National 863 project key program of China [2007AA1013404]
- Science and Technology Program of Guangdong Province [2009A030700007]
- Guangdong Industry-University [2010A090200041]
- Innovation Promotion Society for Yound Scientist of Chinese Academy of Sciences
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The acid- and alkali-soluble polysaccharides (DIPs I and II) were extracted from the fruiting body of Dictyophora indusiata in this work. DIP I comprised of Glc (glucose), Fru (fructose) and Man (mannose), whereas DIP II was of Glc and Fru. Glc was the dominant monosaccharide in both DIPs with relatively molar percentage of >60%, which constructed the backbone of polysaccharide chain. The analysis of the glycosidic linkages indicated that Glc occurred as Glc 1 -> 6 in DIP II. The immunological assays showed that both DIPs I and II had a noticeable effect on the hemolysis antibody level in the tested dosage range. However, DIP I could improve the weight of thymus organ and phagocytosis of monocyte. DIP II could restore delayed-type hypersensitivity reaction to dinitrofluorobenzene (DNFB). improving the activity of natural killer cells and the proliferation of splenocytes at high dose. (C) 2011 Elsevier Ltd. All rights reserved.
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