Resistant starch is formed with cooling and not gelatinized with microwave

DOI

Bibliographic Information

Other Title
  • レジスタントスターチは冷ますと増えてレンジで減らない

Description

<p>[Purpose]</p><p>Resistance starch (RS) is known as indigestive starch and improving gut microbiota. But there is little knowledge of a change in RS in food by cooking and during preservation. So various starch, just after the heating of a food and back RS heated with a microwave again after room temperature leaving for 1 hour were measured.</p><p>[Methods]</p><p>A bunch of dry spaghetti (100g) was heated for 7 minutes by boiling hot water of 1L. Other carbohydrate rich foods were cooked as follows: dry noodle (90g), boiled noodles (180g) and raw Chinese noodles (141g) respectively. The cooked foods were left in the room temperature for 1 hour. Rice(200g) was added 1.5 times of water and cooked by a electric rice cooker. After leaving the room temperature for 1 hour, it was heated with a microwave. And then it was poured of boiling water and did room temperature leaving for 10 minutes. Cooked rice was preserved in a freezer for 24 hours. The freezing rice was heated by a microwave. And then it was leaving for 4 hours in room temperature after re-heating. Sample preparation was followed as Kamei1) , and RS was measured by AOAC method.</p><p>[Results]</p><p>RS was increased 2.0 times in spaghetti by 1 hour room temperature leaving. Dry noodle, boiled noodles and raw Chinese noodles were increased 1.5, 1.1, 2.2 times respectively. RS increased 2.9 times in cooked rice after 1 hour leaving at room temperature. Microwave re-heat and pouring boiled water were not decreased RS (93%, 95% to 1 hour room temperature leaving). RS was increased 2.1 after 24 hours freezer preservation. RS was increased after microwave re-heart (117%), and RS was still increased 4 hours room temperature after microwave re-heat (139%). Those results indicate RS is formed cooling, and RS is not gelatinization microwave re-heat or adding boiled water.</p><p>1) Kamei et al, Miyagi University of Education, Bulletin (2016) 50, 165-170.</p>

Journal

Details 詳細情報について

  • CRID
    1390007827783665664
  • NII Article ID
    130008085660
  • DOI
    10.11402/ajscs.32.0_23
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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