Fungal diversity and mycotoxin contamination in dried fish products in Zhanjiang market, China

Dried fish are important dietary protein and income sources in Zhanjiang, China. Mycotoxins produced by pathogenic fungi that contaminate during processing can cause considerable hazard to consumer health. This study reports fungal diversity, total counts mycotoxin contamination of dried sold at the seafood market Zhanjiang. Seven products (Hemibarbus maculatus, Pseudosciaena crocea, Lutjanus erythopterus, Thunnus thynnus, Scomberomorus niphonius, Eleutheronema tetradactylum, Trichiurus lepturus, n = 10) from seven retailers were analyzed for contaminated species, occurrence frequency residues analysis four mycotoxins. Using potato dextrose agar (PDA) plate purification, morphology observation, internal transcribed spacer (ITS) sequence analysis, 25 strains representing 12 genera systematically isolated identified. Three dominant Fusarium sp. (80.4%), Penicillium (70.7%) Aspergillus sp.(63.9%). Other Neoscytalidium sp.(38.1%), Cutaneotrichosporon (38.1%), Trichoderma sp.(20.3%), Naganishia sp.(15.3%), Kodamaea (10.8%), Phialemoniopsis sp.(9.2%), Nigrospora sp.(7.3%), Ceriporia sp.(6.3%), Phellinus sp.(4.5%). flavus was higher ranged 1.10 × 103 2.40 104 cfu/g. The mean other species 1.07 102 4.58 1.09 2.11 cfu/g, but is relatively high. Liquid chromatography-tandem mass spectrometry (LC-MS/MS) analyses showed present out tested. Aflatoxin B1 (AFB1) most frequently detected concentration 0.03 3.52 ?g/kg. T-2 toxin (T-2), ochratoxin A (OTA), deoxynivalenol (DON) concentrations 0.21 1.53, 0.03–2.21 0.71 ?g/kg respectively. High populations mycotoxins Zhanjiang pose a potential threat It recommended future, advanced methods controlled storage condition need be used minimize if possible eliminate processing.