ミネラルウォーターに対する女子短大生とラットの嗜好性の類似 Similar Preference for Natural Mineral Water between Female College Students and Rats

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Abstract

市販のミネラルウォーターに対する嗜好性を女子短大生と雌ラットで調べた.ミネラルウォーター中のCa, Mg, NaおよびKの含有量は原子吸光分析法,硬度はキレート滴定法で測定した.次に,正常な味覚感受性である女子短大生を経験者とし,ミネラルウォーター4種と水道水を試料として官能評価を行った.一方,ラットは8週齢雌を用いて二瓶選択法により嗜好性試験を行った.ミネラルウォーターの中のCaおよびMgの含有量はラベル表値よりも低く,NaおよびKは高かった.また,硬度はCaおよびMgの含有量から算出される値の薬1.2倍を示した.官能評価に用いたミネラルウォーターの硬度は11.5, 58.3, 81.3, 332.3, 534.0mg/lであり,水道水は38.3mg/lであった.女子短大生,雌ラットとも硬度58.3mg/lのミネラルウォーターにおいて嗜好性が最も高く,硬度300mg/l以上では嗜好性が低下した.これらの結果は,女子短大生と雌ラットにおけるミネラルウォーターの嗜好性は類似しており,硬度約50mg/lが飲み水として最もおいしいということを示唆した.また,ミネラルウォーターにおいてもおいしさの指標をして硬度が使用できることが確認された.

The preference for natural mineral water was studied with female college students and rats. Four commercially available types of natural mineral water from Japan and overseas were selected for a sensory evalua1.iort. Tap water was used as a control. The amounts of calcium, magnesium, sodium and potassium in each water sample were measured by atomic absorption spectrophotometry, and the hardness was measured by the chelatometric method. The subjects were female college students with normal taste perception. Subsequently, 8-week-old female rats were subjected to two-bottle-choice preference tests. The measured concentrations of calcium and magnesium in each water sample were lower than the values indicated on the labels, while the sodium and potassium concentrations were higher. The measured hardness values were approximately 1.2 times those calculated from the concentrations of calcium and magnesium. The hardness values of the test samples were 11.5, 58.3, 81.3, 332.3 and 534.0 mg/l, while tap water had a hardness of 38.3 mg/l. Preference tests showed that a hardness of 58.3 mg/l produced the most favorable taste quality, while a value of more than 300 mg/l resulted in aversion with both humans and rats. These results suggest that the acceptability of natural mineral water is similar with both humans and rats, with a hardness of around 50 mg/l being best for drinking water. The hardness of mineral water can be used as an index for the sensory evaluation of drinking water.

Journal

Journal of home economics of Japan   [List of Volumes]

Journal of home economics of Japan 50(12), 1217-1222, 1999-12-15  [Table of Contents]

The Japan Society of Home Economics (JSHE)

References:  26

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Codes

  • NII Article ID (NAID) :
    110003168705
  • NII NACSIS-CAT ID (NCID) :
    AN10040097
  • Text Lang :
    ENG
  • Article Type :
    Journal Article
  • ISSN :
    09135227
  • NDL Article ID :
    4934813
  • NDL Source Classification :
    ZE16(社会・労働--家事・家政--学術誌)
  • NDL Call No. :
    Z6-113
  • Databases :
    CJP  CJPref  NDL  NII-ELS