果实采前套袋对龙眼果实品质和耐贮性的影响  

Effects of fruit pre-harvest bagging on the quality and post-harvest storability of longan fruit

作　　者：林河通[1] 瓮红利[1] 张居念[2] 梁毅[1] 林大才 

机构地区：[1]福建农林大学食品科学学院,福州350002 [2]福建省农业科学院水稻研究所,福州350019 [3]安溪县人民政府农业办公室,福建安溪362400

出　　处：《农业工程学报》2006年第11期232-237,共6页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家自然科学基金项目(30200192;30671464);福建省自然科学基金项目(B9910016;B0210021;F0310023;B0510019);福建省重点科技项目(2006S0003);福建省博士后基金项目(010329)

摘　　要：以福建省主栽龙眼品种“福眼”果实为材料,研究果实采前套袋对龙眼果实品质和采后耐贮性的影响。结果表明果实采前套袋可明显改善龙眼果实的外观品质;但降低了果肉可溶性固形物、可滴定酸、维生素C和总糖等营养物质含量,导致龙眼果实甜度下降、风味变淡。果实采前套袋降低了与龙眼果皮褐变密切相关的酚类物质(包括花色素苷、类黄酮和总酚)含量和多酚氧化酶、过氧化物酶的活性,减少了龙眼果实在贮藏期间果皮褐变的发生;同时,果实采前套袋明显减轻由采前病原菌潜伏侵染所致的采后龙眼果实病害,提高果实耐贮性,延长果实贮藏期。Effects of fruit pre-harvest bagging on the quality and post-harvest storability of longan fruit Lin Hetong~, Weng Hongli~, ＂Fuyan＂ longan fruit （Dimocarpus longan Lour. cv. Fuyan）, the major cultivar in Fujian province of China, was used. Effects of fruit pre-harvest bagging on the quality and post-harvest storability of longan fruit were investigated. Results are as follows .. fruit pre-harvest bagging can obviously improve the appearance quality of longan fruit. Whereas, fruit pre-harvest bagging decrease the contents of total soluble solids, titratable acidity, vitamin C and total sugars which result in lower sweetness and less flavor in longan pulp. Fruit pre harvest bagging decrease the contents of phenolics（ineluding anthocyanin, flavonoid and total phenolics） and the activities of polyphenoloxidase and peroxidase in the pericarp of longan fruit, which are closely related to the pericarp browning of longan fruit. Hence, fruit pre-harvest bagging reduce the occurrence of pericarp browning dur ing longan fruit storage. Meanwhile, fruit pre-harvest bagging can obviously reduce post-harvest diseases of longan fruit which resulted from latent-infected pathogens in pre-harvest cultivation. Therefore, fruit pre-harvest bagging can improve the fruit storability and prolong storage life of longan fruit.

关 键 词：龙眼 果实 采前套袋 果实品质 耐贮性 

分 类 号：S667.2[农业科学—果树学] TS255.4[农业科学—园艺学]