Extraction, antimicrobial, and antioxidant activities of crude polysaccharides from the wood ear medicinal mushroom Auricularia auricula-judae (higher basidiomycetes)

Ming Cai, Yang Lin, Yin Long Luo, Hanhua Liang, Pei Long Sun

Research output: Journal article publicationJournal articleAcademic researchpeer-review

38 Citations (Scopus)


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.
Original languageEnglish
Pages (from-to)591-600
Number of pages10
JournalInternational Journal of Medicinal Mushrooms
Issue number6
Publication statusPublished - 2 Jul 2015


  • Antimicrobial
  • Antioxidant
  • Auricularia auricula-judae
  • Crude polysaccharides
  • Medicinal mushrooms

ASJC Scopus subject areas

  • Applied Microbiology and Biotechnology
  • Pharmacology
  • Drug Discovery

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