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Grouping of tap waters by mineral composition and several properties, using principal component analysis, to identify significant influential factors to the taste.

Research Project

Project/Area Number 24500958
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Eating habits, studies on eating habits
Research InstitutionHagoromo International University

Principal Investigator

IKE AKIKO  羽衣国際大学, 人間生活学部, 教授 (70379139)

Co-Investigator(Kenkyū-buntansha) 川瀬 雅也  長浜バイオ大学, バイオサイエンス学部 (90224782)
Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords水道水 / ミネラル成分 / 味評価 / 主成分解析 / 判別分析 / 飲料水 / 主成分分析
Outline of Final Research Achievements

The relationship between the taste of tap waters and their properties, mineral composition, pH, hardness and other physical and chemical properties, was investigated. By the principal component analysis based on the concentrations of Na,Ca,K,Mg,Si and several physical and chemical properties, the tap waters supplied from 20 areas in Japan, were divided to three groups. The tap waters with high estimations of taste belong to the group which have rower concentration on Si and Ca, and which is the surface water. Discriminant analysis also shows that the concentration of Si and Ca gives high contribution in diving tap waters into two groups based on tasting test. The value of pH of tap water is also suggested to be an important factor in discriminant analysis.
Discriminant analysis shows no contradiction with principal component analysis. The obtained results suggest the following possibility that the concentration of Si and Ca, and pH relate with the taste of tap water.

Report

(4 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • 2012 Research-status Report
  • Research Products

    (3 results)

All 2014 2013 2012

All Presentation (3 results)

  • [Presentation] 国内外の水道水・ミネラルウォーターの分類と味に貢献する因子の抽出2014

    • Author(s)
      池晶子  川瀬雅也 山川純次
    • Organizer
      日本陸水学会
    • Place of Presentation
      筑波大学
    • Year and Date
      2014-09-10 – 2014-09-13
    • Related Report
      2014 Annual Research Report
  • [Presentation] 国内の水道水とミネラルウォーターの含有元素および物性による分類2013

    • Author(s)
      池 晶子  川瀬 雅也  山川純次
    • Organizer
      日本陸水学会
    • Place of Presentation
      龍谷大学
    • Related Report
      2013 Research-status Report
  • [Presentation] 水道水の味を左右するミネラル成分2012

    • Author(s)
      池 晶子
    • Organizer
      日本食品科学工学会,年次大会
    • Place of Presentation
      札幌
    • Related Report
      2012 Research-status Report

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Published: 2013-05-31   Modified: 2019-07-29  

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