起源をことにする各種でん粉粒のパンクレアチンによる分解性

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書誌事項

タイトル別名
  • Comparative Susceptibility to Pancreatin of Starch Granules from Different Plant Species
  • キゲン オ コト ニ スル カクシュ デンプンリュウ ノ パンクレアチン ニヨ

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抄録

We confirmed that starch granules of potato, Chinese yam (tubers of Dioscorea batatas), banana (fruits of Musa cavendishii), lily (bulbs of Lilium sp.), gingko (seeds of Gingko biloba), high-amylose corn, lotus (tubers of Nelumbo nucifera), chestnuts (seeds of Castanea crenata), kuzu (Japanese arrowroot, Pueraria lobata) and sweet potato were respectively in decreasing order more resistant to the action of pancreatin than were those of normal corn, wheat, rice, red corn (maize morado) and taro (roots of Colocasia antiquoruni). Although starch granules of roots and tubers were, in general, more resistant to the action of amylase than those of cereals, taro starch granules were highly susceptible and starch granules of banana, gingko and chestnuts were rather resistant to the action of pancreatin comparing with those of the normal corn. We also examined relative susceptibility to pancreatin of starch granules of 13 cultivars of legumes (Vicia faba, Pisum sativum var. arvense, Phaseolus vulgaris, Vigna sesquipedalis, Vigna angularis, and Dolichos lablab). These starch granules were, in general, less susceptible to the enzyme action than those of the normal corn. By scanning electron microscopy (SEM), damage on the surface layers of legume starch granules could not be observed after the action of pancreatin, but, step-shaped inner structures of some granules were visible. Starch contents of starchy legumes, soybeans and peanuts were 35-40, 0.8-1.4 and 5.1%(on wet weight basis), respectively. Starch granules with smooth surfaces embedded in cells of dissected cotyledon were observed by SEM of ungerminated seeds of legumes and peanuts. After 7 days of germination, although some starch granules had smooth surfaces, some other granules had rough surfaces. However, patterns of enzymatic erotion of the starch granules visible in the dissected endosperms of normal corn following the early germination period were seldom observed in the case of the cotyledon of germinating legume seeds except for those of azuki beans and peanuts.

収録刊行物

  • 澱粉科学

    澱粉科学 26 (3), 182-190, 1979

    日本応用糖質科学会

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