ピーマン果実の成熟中のアスコルビン酸代謝  [in Japanese] Ascorbate Metabolism during Maturation of Sweet Pepper (Capsium annuum L.) Fruit  [in Japanese]

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Author(s)

Abstract

'ゴールデンベル'ピーマン果実の成熟中のアスコルビン酸代謝の変化について検討した.1. アスコルビン酸含量は果実の成熟中に増加したが, 酸化型アスコルビン酸は成熟中も変化せず, 総アスコルビン酸含量の約1%程度であった.2. GLDHの活性は果実成熟中に増加し, Yellowの熟度段階で高い活性を示した.3. アスコルビン酸ペルオキシダーゼは果実成熟中の熟度段階Green/YellowとYellow/Greenで高い活性を示した.4. 酸化型アスコルビン酸還元酵素の活性は果実成熟中の変化は少なかった.一方, モノデヒドロアスコルビン酸還元酵素の活性は成熟に伴い増加し, 熟度段階Yellowで高い活性を示した.以上の結果からピーマン果実の成熟中のアスコルビン酸含量の増加は, GLDHの活性およびモノデヒドロアスコルビン酸還元酵素の活性の増加によるものと考えられる.

Changes in ascorbate metabolism during maturation of sweet pepper (Capsicum annuum L.) fruit 'Golden Bell' were investigated. The mature fruits were divided into four stages, based on changes in peel color from green to yellow ; Green=100% green, Green/Yellow=10∿20% yellow, Yellow/Green=50∿60% yellow, Yellow=100% yellow. 1. Ascorbate content in sweet pepper fruit increased during maturation, whereas dehydroascorbate content remained at 1% throughout the maturation. 2. L-Galactono-γ-lactone dehydrogenase activity increased during maturation, the highest activity was occurring at Yellow stage. 3. Ascorbate peroxidase activity was highest at Green/Yellow or Yellow/Green stage and lowest at the Yellow stage. 4. Dehydroascorbate reductase activity was almost constant during maturation, whereas monodehydroascorbate reductase activity increased from Green to Yellow stage. From our results we attribute the increase of ascorbate contents during maturation to the increase in L-galactono-γ-lactone dehydrogenase and monodehydroascorbate reductase activities.

Journal

  • Journal of the Japanese Society for Horticultural Science

    Journal of the Japanese Society for Horticultural Science 67(5), 798-804, 1998-09-15

    THE JAPANESE SOCIETY FOR HORTICULTURAL SCIENCE

References:  23

Cited by:  5

Codes

  • NII Article ID (NAID)
    110001816129
  • NII NACSIS-CAT ID (NCID)
    AN00025257
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    00137626
  • NDL Article ID
    4564009
  • NDL Source Classification
    ZR7(科学技術--農林水産--農産)
  • NDL Call No.
    Z18-172
  • Data Source
    CJP  CJPref  NDL  NII-ELS  IR  J-STAGE  NDL-Digital 
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