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Effective Utilization of Fungi Irradiated by Ultraviolet Light into Dietary life

Research Project

Project/Area Number 02680049
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 家政学
Research InstitutionSaitama University

Principal Investigator

KIRIBUCHI Toshiko  Saitama University, Dep. of Education, Professor, 教育学部, 教授 (20008692)

Co-Investigator(Kenkyū-buntansha) MIWA Kaoru (KAWASHIMA Ka)  Saitama University, Dep. of Education, Assistant Professor, 教育学部, 助教授 (00114207)
Project Period (FY) 1990 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1991: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1990: ¥1,200,000 (Direct Cost: ¥1,200,000)
KeywordsVitamin D_2 / Fungi / Ultraviolet light irradiation / Enokitake / Inosinic acid (IMP) / Guanylic acid (GMP) / Glutamic acid / Sensory test / ビタミンD_2強化エノキタケ / キノコの旨味物質 / 遊離アミノ酸 / γーアミノ酪酸(GABA) / シイタケ / ヒラタケ / 嗜好性
Research Abstract

In all fungi investigated, Shiitake, Hiratake and Enokitake, the ergosterol was present in considerable amount, but no of little vitamin D_2 was present, Vitamin D_2 in all the sample of fungi was produced from ergosterol by sun or ultraviolet light irradiation. More vitamin D_2 in fungi, especially in Enokitake, was produced in ultraviolet light irradiation than in solar radiation. Scince significant amount of vitamin : D_2 in Enokitake was produced by ultraviolet light irradiation, the suitable conditions for irradiation, Umami taste, cooking and food processing of Enokitake were investigated to be available for an effective dietary source of vitamin D.
Contents of vitamin D_2 in Enokitake irradiated by ultraviolet light for 2 hours or 20 minutes were about 2000 IU or 1000 Id per gram in dry matter, , respectively. In view of the nutrition, irradiation by ultraviolet light for 20-30 minutes makes Enokitake into an effective source of vitamin D supply. . Few amount of vitamin D_2 produced in Enokitake was destroyed by drying and during storage for several monthe in cold chamber, but also Umami taste in irradiated dried Enokitake was increased significantly. Free amino acids and 5'nucleotide were present for Umami substances in dried Enokitake. ., That is, contents of glutamic acid, IMP and GMP were 820, 540 and 260 mg%, respectively. Scince synergistic effect in taste of the 5'-nucleotide in combination with glutamic acid was well-known, these results suggested that the presence of 5'-nucleotide and glutamic acid in dried Enokitake enhanced Umami taste.
Sensory test panel judged that addition of dried Enokitake to several cooking gave an increase in Umami taste or preference.

Report

(3 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] 桐渕 壽子: "日光または紫外線照射キノコの遊離アミノ酸の変化" 日本家政学会誌. 42. 415-421 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 桐渕 壽子: "キノコのγーアミノ酪酸" 日本家政学会誌. 43. 165-168 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 桐渕 壽子: "紫外線照射条件の違いによるキノコのビタミンD_2生成量の比較および保存中における変化" 日本家政学会誌. 43. (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 桐渕 壽子: "紫外線照射エノキタケの呈味に関する研究:主として核酸関連化合物について" 日本家政学会誌.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 三輪(川嶋) かほる: "紫外線照射によるビタミンD_2強化エノキタケの嗜好性および調理への利用" 日本家政学会誌.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Toshiko Kiribuchi: "Changes of Free Amino Acid Composition in Fungi by Sun or Ultraviolet Light Irradiation" Nihon Kasei Gakkaishi (J. Home Econ. Jpn.). 42 No. 5. 415-421 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Toshiko Kiribuchi: "Studies or gamma-Aminobutyric Acid in Fungi" Nihon Kasei Gakkaishi (J. Home Econ. Jpn.). 43 No. 2. 165-168 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Toshiko Kiribuchi: "Contents of Vitamin D_2 in Fungi Produced by Ultraviolet Light Irradiation under Various Conditions and Changes of Vitamin D_2 in Those Fungi during Storage" Nihon Kasei Gakkaishi (J. Home Econ. Jpn.).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Toshiko Kiribuchi: "Umami Taste of Enokitake Irradiated by Ultraviolet Light : 5 -Nucleotides" Nihon Kasei Gakkaishi (J. Home Econ. Jpn.).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 桐渕 壽子: "日光または紫外線照射キノコの遊離アミノ酸の変化" 日本家政学会誌. 42. 415-421 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 桐渕 壽子: "キノコのγーアミノ酪酸" 日本家政学会誌. 43. 165-168 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 桐渕 壽子: "紫外線照射条件の違いによるキノコのビタミンD_2生成量の比較および保存中における変化" 日本家政学会誌. 43. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 桐渕 壽子: "紫外線照射エノキタケの呈味に関する研究:主として核酸関連化合物について" 日本家政学会誌.

    • Related Report
      1991 Annual Research Report
  • [Publications] 三輪(川嶋)かほる: "紫外線照射によるビタミンD_2強化エノキタケの嗜好性および調理への利用" 日本家政学会誌.

    • Related Report
      1991 Annual Research Report
  • [Publications] 桐渕 壽子: "日光または紫外線照射キノコの遊離アミノ酸の変化" 日本家政学会誌. 42. (1991)

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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