Isozyme Composition of Actinidin in the Fruit of Different Kiwifruit Varieties

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  • キウイフルーツ果実におけるアクチニジンアイソザイム組成の品種/ 系統間差異
  • キウイフルーツ カジツ ニ オケル アクチニジンアイソザイム ソセイ ノ ヒンシュ/ケイトウ カン サイ

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Kiwifruit contains a cysteine protease called actinidin. It has been suggested that the actinidin　inʻ Hayward’ fruit, the most common commercially available cultivar, can be divided into several　isozymes. In the present study, two types of actinidin isozyme, A1 and A2, were purified from　ʻHayward’ fruit, and these concentrations in the fruit juice of 16 kiwifruit cultivars/selections　were determined using ion-exchange high-performance liquid chromatography. The　concentrations of A1 and A2 were in the ranges of 0 - 2.32 and 0 - 1.77 mg/mL, respectively.　There was a considerable varietal difference in A1/A2 ratios, ranging from 100 : 0 to 28 : 72.

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