Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/28854
Title: Extraction, antimicrobial, and antioxidant activities of crude polysaccharides from the wood ear medicinal mushroom Auricularia auricula-judae (higher basidiomycetes)
Authors: Cai, M
Lin, Y
Luo, YL
Liang, HH 
Sun, PL
Keywords: Antimicrobial
Antioxidant
Auricularia auricula-judae
Crude polysaccharides
Medicinal mushrooms
Issue Date: 2015
Publisher: Begell House
Source: International journal of medicinal mushrooms, 2015, v. 17, no. 6, p. 591-600 How to cite?
Journal: International journal of medicinal mushrooms 
Abstract: In this study, crude polysaccharides of culinary-medicinal mushroom Auricularia auricular-judae were extracted by hot water extraction and alcohol precipitation, and their antimicrobial and antioxidant activities were investigated. An optimum extraction condition was obtained at a ratio of liquid to solid 70 mL/g, temperature 90°C, time 4 h and extraction number 4. Accordingly, the best yield of crude polysaccharides was 6.89% with 76.12% in purity. Some bacteria and fungi were used for antimicrobial studies. It was found that crude A. auricula-judae had great antimicrobial activities against Escherichia coli and Staphylococcus aureus, but no activities on the others. The inhibitory diameters of antimicrobial zones for the two were 5.55 ± 0.182 and 9.84 ± 0.076 mm, respectively. Moreover, crude A. auricula-judae had significant antioxidant activities in scavenging free radicals, reducing power assays, and Fe2+ chelating ability assay. Results revealed that crude A. auricula-judae has a great potential as antimicrobial and antioxidant, and it can be a supplementary food for human health.
URI: http://hdl.handle.net/10397/28854
ISSN: 1521-9437
EISSN: 1940-4344
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