新形質米米飯の咀嚼特性と澱粉の分子構造との関係  [in Japanese] Chewing Properties of Cooked Rice from New Characteristic Rice Cultivars and Their Relation to Starch Molecular Structures  [in Japanese]

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Abstract

We measured the chewing properties of cooked rice from six new characteristic rice cultivars, Saikai 194, Saikai 198, Hokuriku 149, Suigen 258, Hoshiyutaka and Saikai 184, using a rheometer and analyzed their relation to the starch molecular structures reported previously (Mizukami et al., Oyo Toshitsu Kagaku, 43, 15-23 (1996)). The cultivars revealed different chewing properties: the hardness, adhesiveness and stickiness were 590-940 g, 440-5700 erg and 55-200 g, respectively. Hoshiyutaka and Saikai 184 were hard, less adhesive and sticky, whereas Hokuriku 149 was soft and Saikai 194 was strongly adhesive and sticky. These chewing properties were compared with the amylose content and molecular structures of amylose and amylopectin, and a correlation to the molecular structure of amylopectin was found; that is, hard cooked rice and less-sticky and adhe-sive cooked rice had large amounts of very-long chains in the amylopectin molecules. The very-long chains might restrain the collapse of starch granules by crosslinking amylopectin molecules because starch with a low breakdown had a large amount of the very-long chains, and thus may be one of the causes of the hardness of the cooked rice.

Journal

  • Journal of Applied Glycoscience

    Journal of Applied Glycoscience 47(1), 61-65, 2000-03-31

    The Japanese Society of Applied Glycoscience

References:  10

Cited by:  8

Codes

  • NII Article ID (NAID)
    10008251546
  • NII NACSIS-CAT ID (NCID)
    AN10453916
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    13403494
  • NDL Article ID
    5397217
  • NDL Source Classification
    ZP24(科学技術--化学・化学工業--糖・澱粉)
  • NDL Call No.
    Z17-15
  • Data Source
    CJP  CJPref  NDL  J-STAGE  JASI 
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