套袋对刺葡萄果实品质及酚类物质的影响

以湖南省中方县的刺葡萄为试材,采用果实套袋的方法,研究其对刺葡萄果实品质和酚类物质的影响,以期为酒用刺葡萄的生产及酿酒提供参考。结果表明:套袋处理降低了果实发病率;与对照相比,套袋降低了采收期刺葡萄果实还原糖含量,增加了总酸含量;套袋处理还降低了葡萄果实总酚含量、总花色苷含量及总黄烷醇含量,2014年分别降低了21.50%、34.84%、14.38%,2015年分别降低了12.23%、9.04%、14.65%。通过2年试验,套袋处理的单体花色苷较对照分别降低30.47%(2014年)、4.28%(2015年);与对照相比,套袋处理的非单体花色苷酚类物质总量2014年降低了9.05%,2015年增加了15.17%,其中黄烷醇类物质,2014年降低了10.15%,2015年增加了15.53%。因此,套袋对刺葡萄果实品质及酚类物质无提升作用,不适合刺葡萄葡萄酒的酿造。

Effect of Bagging on Fruit Quality and Phenolic Compounds of Spine Grape

The spine grape in Zhongfang county of Hunan Province was used as test material,and the effect of fruit bagging on the ftuit quality and phenolic compounds of spine grape was studied,aiming to lay the foundation for the production and brewing of spine grape.The results showed that bagging treatment reduced the incidence of fruit;compared with the control,bagging reduced the reducing sugar content of spine grape and increased the total acid content in the during harvest;bagging also reduced the total phenolic content,total anthocyanin content and total flavanol content of the grape fruit,in 2014,it decreased by 21.50%,34.84%,and 14.38% respectively,in 2015,it decreased by 12.23%,9.04% and 14.65% respectively;in the two-year trial,compared with the control,bagging treatment decreased monomer anthocyanins by 30.47%(2014) and 4.28%(2015);compared with the control,bagging treatment decreased non-anthocyanins and phenolics total content by 9.05% in 2014 and by 15.17% in 2015,among them,the flavanols content was decreased by 10.15% in 2014 and 15.53% in 2015.Therefore,bagging has no benefit on the quality of spine grape fruit and phenolic,and is not suitable for the brewing of spine grape wine.