レシチン分析試験法の検討:油脂及び油脂製品試験法部会合同実験結果 Collaborative Studies on the Analysis of Lecithin by JOCS Official Method

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Abstract

Collaborative analyses of lecithin were conducted to establish a standard method for the Japan Oil Chemists' Society.<BR>Determinations of moisture, acid value, peroxide value, iodine value, acetone soluble matter and toluene insoluble matter of lecithin were carried out at ten different laboratories. All the data compiled showed good agreement except for those of moisture whose standard deviation showed considerable variation among laboratories. But this will not lead to any problems in practical applications in commercial transactions.<BR>The accuracy of acid determinations was increased by facilitating assessment of color change near the end point of titration. In the determinations of peroxide value and iodine value emulsification on shaking with water was prevented by adjusting the amount of sample and water. In the determination of acetone soluble matter, the lecithin sample had to be dissolved in exactly 2 mL of petroleum ether and washed thoughly with acetone.<BR>Good results were obtained by centrifugation instead of filtration using a glass filter for the ditermination of toluene insoluble matter.

Journal

  • Journal of Japan Oil Chemists' Society

    Journal of Japan Oil Chemists' Society 40(3), 221-228, 1991

    Japan Oil Chemists' Society

Codes

  • NII Article ID (NAID)
    130001019449
  • NII NACSIS-CAT ID (NCID)
    AN00245435
  • Text Lang
    UNK
  • ISSN
    0513398X
  • NDL Article ID
    3706518
  • NDL Source Classification
    PA93(油・脂)
  • NDL Source Classification
    ZP25(科学技術--化学・化学工業--油脂類)
  • NDL Call No.
    Z17-255
  • Data Source
    NDL  J-STAGE 
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