イランにおけるピスタチオナッツ生産の現状  [in Japanese] Present situation for production of pistachio nuts in Iran  [in Japanese]

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Abstract

イランのヤズド,ケルマンにて,ピスタチオナッツの収穫から製造工程における<i>Aspergillus flavus</i>と<i>A. parasiticus</i>のアフラトキシン産生菌の分布について調査を行った.その結果,畑土壌からは検出されなかったが,畑で収集された開裂果実,虫害果実,あるいは製造工程の洗浄水,製品貯蔵庫内空気のいずれからも<i>A. flavus</i>が検出された.このことは,アフラトキシン汚染を防ぐには,栽培から最終製品の貯蔵に至るまでの全体を通した微生物管理,衛生管理が必要であることを示した.水による洗浄・選別工程で除外された1区分(floating nuts,閉殻粒を除く)と目視により選別除外された5区分,計6区分について,菌学的検査とアフラトキシンの分析を行った.Floating nuts 区分と目視により除外されたdark stained 区分では全粒から<i>A. flavus</i> 検出されたが,閉殻(closed mouth)群からはほとんど検出されなかった.アフラトキシンはdark stained 区分のみから検出された.このことは,目視による選別が有効である可能性を示したが完全な減毒法ではないことから,更に今後の検討が必要である.

Distribution of <i>A. flavus</i> and <i>A. parasiticus</i> were examined in the steps from harvest to air of warehouse for final products after processing in Yazd and Kerman, Iran in 2000. <i>A. flavus</i> was isolated from the some of split fruits and insect-damaged fruits dropped on the growing field of the nuts, and running water and still water for washing and sorting of the nuts as well as air in the warehouse although none from the field soil. These results indicated that fungus control throughout the steps from growing to storage of the nuts was important to prevent aflatoxin contamination in Iranian pistachio nuts. One sample separated by floating process and 5 samples sorted by hand picking on basis of appearence were examined for mycological study and also for aflatoxin analysis. <i>A. flavus</i> were detected in both samples of all the kernels tested in the floating nuts separated by the floating and dark stained nuts sorted by hand picking. B and G aflaftoxins were detected only in the sample of stained nuts in this study. These results suggested that the hand picking by apperenece is useful for sorting to detoxify aflatoxin contamination lots of the nuts although further study is needed.

Journal

  • JSM Mycotoxins

    JSM Mycotoxins 51(2), 95-102, 2001-07-31

    Japanese Society of Mycotoxicology

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Codes

  • NII Article ID (NAID)
    10008018232
  • NII NACSIS-CAT ID (NCID)
    AN00334513
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    02851466
  • Data Source
    CJP  CJPref  J-STAGE 
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