莢付き未熟豆の冷却貯蔵にともなうビタミンC量の変化

概要

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The vitamin C(VC)content of garden pea pods was higher than that of kidney bean or yard bean pods. The activity of L-galactonolactone dehydrogenase(EC 1.3.2.3, GLDH), Which catalyzes the last step of ascorbic acid(AsA)biosynthesis, of garden pea pods was also higher than that of kidney bean pods, while the ascorbate oxidase(EC 1.10.3.3, AAO)activity of garden pea pods was lower than that of kidney bean pods. Young pods of improved varieties of kidney bean(Morocco)and yard bean(Kegon)are generally preferred, the VC contents of these pods being higher than those of the original varieties even after storing for 7 days. Storing kidney beans at 4°C was better than at 15°C to maintain a high level of VC. The smaller pods of kidney bean had a higher level of VC and retained more VC during storage than the larger pods. The VC content and GLDH activity of small kidney bean pods increased during the first 2 or 3 days of 4°C storage and then decreased. It is suggested that the VC content in the stored pods of immature legumes was positively correlated with the GLDH activity and negatively correlated with the AAO activity.
社団法人日本家政学会の論文
2001-06-15