Evaluation of the Physiological Function of Sumomoume (Prunus salicina*Prunus mume) 'Beninomai' Bred in Gunma Prefecture

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  • Kitazume Masae
    Gunma Agriculture Technology Center National Agriculture and Food Research Organization, National Food Research Institute
  • Watanabe Jun
    National Agriculture and Food Research Organization, National Food Research Institute
  • Goto Masao
    National Agriculture and Food Research Organization, National Food Research Institute
  • Takano-Ishikawa Yuko
    National Agriculture and Food Research Organization, National Food Research Institute

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Other Title
  • 群馬県育成スモモウメ品種‘紅の舞’の生体調節機能評価
  • グンマケン イクセイ スモモウメ ヒンシュ ベニ ノ マイ ノ セイタイ チョウセツ キノウ ヒョウカ

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Abstract

‘Beninomai’ is an interspecific hybrid plant (sumomoume) created from the plum (Prunus salicina Lindl.) cultivar ‘Tsukuba 2’ and the Japanese apricot (mume) (Prunus mume Sieb. et Zucc.) cultivar ‘Ousyuku’. We evaluated physiological functions of ‘Beninomai’ fruit. The antioxidant activities were measured by 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity and oxygen radical absorbance capacity (ORAC) assay. Total polyphenol content and polyphenol components were measured by the Folin-Ciocalteu method and HPLC, respectively. Inhibitory activity of ‘Beninomai’ fruit on angiotensin I-converting enzyme and antigen-induced degranulation of RBL-2H3 cells were also evaluated. Physiological functions of ‘Beninomai’ fruit were compared with ‘Ribai’ (hybrid), and other cultivars which are commonly produced in Gunma prefecture ; ‘Soldam’ (plum), ‘Sirokaga’ and ‘Nankou’ (mume). DPPH radical scavenging activity and the hydrophilic ORAC values of ‘Beninomai’ fruit were 15.8-20.5μmol of Trolox equivalents (TE) per gram fresh weight (g FW) and 57.0-61.7μmol TE/g FW, respectively. The antioxidant activities of ‘Beninomai’ fruit was almost the same as ‘Ribai’ fruit,and higher than those of other cultivars. Anthocyanin content of ‘Beninomai’ fruit increased in connection with maturation. The high concentration of anthocyanins was thought to maintain the high antioxidant activity. Both DPPH radical scavenging activities and H-ORAC values of tested fruit samples positively correlated with the total polyphenol content (r=0.988each). ACE inhibitory activity of ‘Beninomai’ showed no differences from other cultivars, and inhibition of antigen-induced mast cell degranulation was lower than mume.

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