保鲜功能微生物对龙眼保鲜的应用.docVIP

保鲜功能微生物FJAT-0809-GLX对龙眼果实保鲜方法的优化( 车建美1,2，苏明星2，郑雪芳2，林抗美2，付萍2，关雄1*，刘波2* （1. 福建农林大学生物农药与化学生物学教育部重点实验室 福州 350002；2. 福建省农业科学院农业生物资源研究所，福州，350003） 摘 要：从施用浓度、贮藏方式和施用方法进行保鲜功能微生物短短芽孢杆菌FJAT-0809-GLX对龙眼果实保鲜方法的优化，结果表明，随着稀释浓度的升高，龙眼果实保鲜率逐渐下降，脱粒率逐渐升高，稀释10倍施用时，保鲜率最高，为75%。保鲜功能微生物喷施龙眼后，采用纸包裹龙眼进行贮藏，其保鲜率明显高于用树叶直接贮藏的效果，为53.28%。从喷施方法来看，保鲜功能微生物采前处理龙眼果实，其脱粒率为24.42%，明显高于采后处理的12.96%，保鲜功能微生物FJAT-0809-GLX采后处理的保鲜率最高，保鲜率为83.33%。 关键词：短短芽孢杆菌（Brevibacillus brevis）；龙眼；保鲜效果 Mfresh-keeping function bacteria strain FJAT-0809-GLX to Longan(Dimocarpus longanan Lour.) Che Jianmei1,2, Su Mingxing2, Zheng Xuefang2, Lin Kangmei2, Fu Ping2, Gu Xiong1*, Liu Bo2* (1. Key Laboratory of Biopesticide and Chemical Biology, Fujian Agriculture and Forestry University, Fuzhou 350002, China; 2. Agricultural Bioresource Research Institute，Fujian Academy of Agricultural Sciences, Fuzhou 350003) Abstract：Method optimizations of fresh-keeping function bacteria strain FJAT-0809-GLX to Longan (Dimocarpus longanan Lour.) was studied in this paper. The results showed that the preservation rate was decreasing as the concentration dilutions of the fresh-keeping function bacteria strain FJAT-0809-GLX increasing. And threshing rate was increasing. The highest preservation rate was 75% as the dilution was ten times. The preservation rate of the paper wrapped longan was higher than that of leaves which was 53.28%. The results of spraying methods of fresh-keeping function bacteria strain FJAT-0809-GLX showed that threshing rate of preharvest was higher than that of postharvest which was 24.42%. The preservation rate of postharvest was highest which was 83.33%. Key words：Brevibacillus brevis, Dimocarpus longan Lour，fresh-keeping effect我国龙眼（Dimocarpus longan Lour）栽培面积和产量居世界首位，2008年福建省龙眼种植面积约114.79万亩、总产量可达21.31万吨，均列全国的前三位（陈艺晖等，2010）。龙眼果实具有皮薄、多汁和含糖量高的特点，成熟季节又适逢高温多湿天气，采后呼吸作用旺盛，衰老迅速，果实极易腐烂变质。在自然条件下，龙眼果实通常3 d左右风味开始劣变，超过1周会完全丧失食用价值（郭红辉等，2005）。 目前，国内外报道的龙眼贮藏保鲜主要有常温保鲜（林河通等，2002）、低温保鲜（李雪萍等，1999；Jiang-Yue Ming，2001）、气调保鲜（王则金等，2005）和化学药剂保鲜（季作梁等，