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Isolation and Identification of Mycotoxin-Producing Fungi in Wine Grapes from Hexi Corridor in Gansu

SONG Rui, HAN Shun-yu, LI Min, WANG Jing, YANG Xue-shan   

  1. 1. College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China;
    2. Grape and Wine Engineering Laboratory of Gansu Province, Lanzhou 730070, China;
    3. Wine Industry Technology Development Center of Gansu Province, Lanzhou 730070, China;
    4. College of Life Science and Technology, Gansu Agricultural University, Lanzhou 730070, China
  • Online:2014-10-15 Published:2014-10-17

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Abstract:

Objective: To understand the dominant groups of contaminant fungi and analyze the potential fungal contaminants
on wine grapes from Hexi Corridor in Gansu. Methods: A primary investigation was conducted on wine grapes from
different regions in Hexi Corridor. Samples were separated and identified. The toxin-producing ability of the isolated strains
was analyzed by high performance liquid chromatography (HPLC). Results: Penicillium decumbens, Penicillium expansum,
Aspergullus versicolor, and Aspergillus fumigatus were identified as the dominant contaminating fungi on wine grapes.
Penicillium expansum was found to be able to produce patulin. Conclusion: Based on the fungal contamination of wine
grapes, the grape-growing areas of Hexi Corridor are at risk of patulin contamination.

Key words: Hexi Corridor in Gansu, wine grape, mycotoxin-producing fungi, patulin

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