レイン-エイノン法による乳糖定量におよぼす牛乳成分の影響 The Effect of Milk Constituents on the Determination of Lactose by Lane-Eynon Method

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Abstract

1. 牛乳成分のうち, タンパク質と脂肪はレイン-エイノン法による乳糖定量法に影響を与えないが, Caは乳糖定量値を低くする.<BR>2. シュウ酸カリウム, EDTA, ヘキサメタリン酸塩などでCaの影響を除くと牛乳の乳糖定量値は約0.13%増加し, クロラミンT法により得られる結果と一致する.<BR>3. 加糖練乳のしょ糖定量において, Caの影響を除くと転化前の滴定値は減少するが, 転化後では変化なく, しょ糖定量値はわずかに (約0.2%) 減少するのみで, Caの影響は少ない.

Among the milk constituents, protein and fat had no effect on the determination of lactose in milk by Lane-Eynon method. But the presence of calcium decreased the apparent lactose content in milk. When the effect of calcium was eliminated by the addition of potassium oxalate, sodium hexametaphosphate or EDTA, the apparent lactose content increased by 0.13% and gave the same result as that determined by Chloramine-T method.<BR>The effect of calcium in determination of sucrose in sweetened condensed milk was less marked; when calcium became innert by addition of EDTA or sodium hexametaphos-phate, the apparent sucrose content in sweetened condensed milk decreased by 0.2%.

Journal

  • Food Hygiene and Safety Science (Shokuhin Eiseigaku Zasshi)

    Food Hygiene and Safety Science (Shokuhin Eiseigaku Zasshi) 9(6), 469-472, 1968

    Japanese Society for Food Hygiene and Safety

Codes

  • NII Article ID (NAID)
    130003693943
  • NII NACSIS-CAT ID (NCID)
    AN00117741
  • Text Lang
    UNK
  • ISSN
    0015-6426
  • NDL Article ID
    8252447
  • NDL Source Classification
    ZS17(科学技術--医学--衛生学・公衆衛生)
  • NDL Call No.
    Z19-364
  • Data Source
    NDL  J-STAGE 
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