馬鈴薯D-酵素の機能と澱粉加工への利用 The Activity, Physiological Role and Biotechnological Application of Potato D-enzyme

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D-enzyme (EC 2.4.1.25) is believed to be involved in starch metabolism, but the function in vivo is not known. In order to investigate the role of D-enzyme, several approaches have been under taken. Transgenic potato plants with dramatically reduced D-enzyme activity were obtained by introducing sense and antisense D-enzyme cDNA sequences with the appropriate promoter sequence. The tubers from these plants sprouted later and the growth of sprouts was slower than the wild type. However, no significant difference was found in starch produced in tubers, either in its quantity or quality. These results seems to suggest the role of D-enzyme in starch degradation rather than starch synthesis. The analysis of the action of D-enzyme on amylose and amylopectin revealed that the enzyme can catalyze the cyclization reaction and produce cycloamylose with DP larger than 17. Cycloamylose produced are highly soluble in water and can incorporate various compounds in their helical cavities, thus expected to find exploitation in food and pharmaceutical industries.

収録刊行物

  • 応用糖質科学 : oyo toshitsu kagaku = Journal of applied glycoscience

    応用糖質科学 : oyo toshitsu kagaku = Journal of applied glycoscience 48(2), 239-247, 2001-04-01

    The Japanese Society of Applied Glycoscience

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各種コード

  • NII論文ID(NAID)
    10008252793
  • NII書誌ID(NCID)
    AN10453916
  • 本文言語コード
    JPN
  • 資料種別
    REV
  • ISSN
    13403494
  • NDL 記事登録ID
    5764966
  • NDL 雑誌分類
    ZP24(科学技術--化学・化学工業--糖・澱粉)
  • NDL 請求記号
    Z17-15
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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