Journal
ARCHIVES OF PHARMACAL RESEARCH
Volume 37, Issue 12, Pages 1530-1537Publisher
PHARMACEUTICAL SOC KOREA
DOI: 10.1007/s12272-014-0391-8
Keywords
Ganoderma lucidum; Submerged culture; Polysaccharide; Adlay oil; Purification; Bioactivity
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Funding
- Zhejiang Provincial Natural Science Foundation of China [Y3100711]
- Program for New Century Excellent Talents in University [NCET-13-1046]
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Polysaccharides from Ganoderma lucidum showed multiple biological activities, such as immuno-modulating, antitumor, antioxidant, and hepatoprotective activity, etc. Adlay oil was added into the media to enhance polysaccharide production by submerged culture of G. lucidum in this work. The results revealed the optimal concentration of adlay oil was 1.5 % for polysaccharide production of G. lucidum. Analysis of the polysaccharide components confirmed that no novel components were biosynthesized by the addition of adlay oil. The main fraction of extracellular polysaccharide, GLEP-2, was isolated from the submerged culture broth of G. lucidum by ethanol precipitation, filtration, DEAE cellulose-52 and Sepharose CL-6B chromatography. GLEP-2, which was composed of glucose, galactose, mannose, arabinose, and rhamnose in a ratio of 332:55:32:13:3 respectively, had an average molecular weight of similar to 2.08 x 10(4) Da. The bioactivity tests demonstrated that GLEP-2 enhanced the T lymphocyte proliferation significantly at a concentration of 200 mu g/mL and B lymphocyte proliferation at lower concentrations of 50 mu g/mL. The results suggest polysaccharides from the submerged culture of G. lucidum are potential candidates for further development and possible commercial applications, especially in the pharmaceutical and functional foods industries.
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