マスカット・オブ・アレキサンドリア収穫果房の切り分けが果実品質に及ぼす影響

In 2003 and 2004, the potential of using table grapes, cv. Muscat of Alexandria, as fresh-cut products was cvaluated by investigating the effects of postharvest cluster stem excision on several quality attributes. Clusters were harbester either at 17 or 19℃Brix from mature grapevines grown in Okayama, Japan. The treatments included: (1) No excision (C): Intact clusters; (2) Excision at Iaterals (L); Branches carrying 2-7 berries; and (3) Excision at pedicels (P): Single berries without pedicels. Fruit was placed in commercial packages and stored for 6 days 25℃. As regards aroma, linalool production by P increased markedly without major changes in the other monoterpenes. In addition, high geraniol production was observed in C, while minor aroma changes ware observed in L. Total amino acid concentrations increased in P and C in comparison to L. Interestingly, at the end of the experiment, berries of treatment P had the highest firmness and visual quality, followed by C, while L was the lowest. It is concluded that grapes of Muscat of Alexandria are suitable for stemless marketing.