生薬中の微生物分布と放射線殺菌効果 Distribution of Microorganisms in Herb Medicines and Their Decontamination by Gamma-irradiation

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Herb medicines are traditional medicine in Japan and have been used for medical treatment. These herb medicines are contaminating frequently by microorganisms which has possibility to cause opportunistic diseases. Recently, hygienic standard of herb medicines become more strict than before, and it needs to decontaminate microorganisms by some treatments. However, chemical treatments such as by ethylene oxide fumigation leave toxic residues in the herbs while steam sterilization decrease medicinal components. From study on the distribution of microorganisms in 31 samples of selected herb medicines, colony forming units of total aerobic bacteria were determined to be 1.9 × 10<SUP>2</SUP> to 1.4 × 10<SUP>8</SUP>per gram in 30 samples. Coliforms were also determined to be 6.9 × 10<SUP>2</SUP> to 4.3 × 10<SUP>6</SUP> per gram in 16 samples. The main aerobic bacteria were identified as <I>Bacillus pumilus, B.circulans, B. megaterium, Erwinia, Enterobacter</I>and<I>Acinetobacter</I>, whereas consisted mainly of <I>Enterobacter</I> in coliform counts. Molds were determined to be 6.3 × 10<SUP>1</SUP> to 1.9 × 10<SUP>5</SUP> per gram which consisted mainly <I>Aspergillus glaucus</I> group, <I>A. restrictus</I> group, <I>A. flavus</I> group, <I>A. ostianus, A. phoenicis, Penicillium, Tricoderma, Rhizopus</I> and <I>Alternaria</I> in 25 samples. A study on the inactivation of microorganisms at sample No. S18 showed that a gamma-irradiation dose of 20 kGy was required to reduce the total aerobic bacteria and the coliforms below a detectable level, while radiation-resistant bacteria were survived at high doses more than 10 kGy consisted with<I>Acinetobacter</I> and <I>Enterobacter.</I> Molds were inactivated below 8 kGy except <I>Alternaria.</I> However, a dose of 10 kGy should be effective for the sample No. S18 to reduce the spore-forming bacteria, the fecal coliforms and the molds below a detectable level per gram. On the study of inactivation of microorganisms in many samples except the No. 18, all kinds of microorganism were inactivated below a detectable level at 10 kGy irradiation.

収録刊行物

  • 食品照射 = Food irradiation, Japan

    食品照射 = Food irradiation, Japan 34(1), 16-22, 1999-09-30

    日本食品照射研究協議会

参考文献:  14件中 1-14件 を表示

被引用文献:  2件中 1-2件 を表示

各種コード

  • NII論文ID(NAID)
    10013022144
  • NII書誌ID(NCID)
    AN00117832
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03871975
  • NDL 記事登録ID
    4868903
  • NDL 雑誌分類
    ZP34(科学技術--食品工学・工業)
  • NDL 請求記号
    Z17-640
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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