UV-C结合新型生物保鲜纸对水蜜桃常温贮藏品质的影响  

Effect of UV-C combined with new biological preservation paper on storage quality of honey peaches at room temperature

作　　者：李晓宇 杜小龙[1] 刘影[1] 同琳静 王倩[1] 李建龙[1] LI Xiaoyu;DU Xiaolong;LIU Ying;TONG Linjing;WANG Qian;LI Jianlong(School of Life Sciences,Nanjing University,Nanjing 210093)

机构地区：[1]南京大学生命科学学院

出　　处：《食品科技》2019年第6期56-62,共7页Food Science and Technology

基　　金：江苏省农业三新工程项目(SXGC(2014)287);苏州市科技计划项目(科技支撑计划-农业项目)(SNG201447);张家港市科技支撑计划项目(ZKN1002)

摘　　要：旨在研究常温条件下短波紫外线(UV-C)照射处理结合新型生物保鲜纸对水蜜桃的保鲜效果,以期为采后水蜜桃的贮藏保鲜提供新方法。以江苏省张家港市的凤凰水蜜桃为试验材料,采用紫外灯照射处理后,放置于内部设有新型生物保鲜纸的包装纸箱中,在常温(28±1)℃条件下贮藏,每天测定水蜜桃的腐烂率、失重率、硬度、可溶性固形物含量、丙二醛含量以及多酚氧化酶活性各项指标,试验跨度为15 d。结果表明:UV-C结合新型生物保鲜纸的保鲜效果优于单一UV-C处理,显著优于空白对照(P<0.05)。贮藏第15天,水蜜桃的腐烂率、失重率、MDA含量和PPO活性分别低于对照组62.35%、54.93%、50.67%、32.85%,呼吸高峰由第4天推迟至第10天,硬度和可溶性固形物含量分别高于对照组42.64%、33.12%。UV-C结合新型生物保鲜纸的方法能够有效降低水蜜桃的腐烂率,减少水蜜桃水分的散失,保持水蜜桃可溶性固形物的含量,抑制水蜜桃MDA含量的增加和PPO活性的升高,因此可作为一种新方法在水蜜桃保鲜领域进行推广使用。The purpose of this paper was to study the effects of UV-C irradiation combined with new biological paper on the preservation of peaches at room temperature, in order to provide a new method for storage and preservation of postharvest peaches. The Fenghuang honey peach in Zhangjiagang city, Jiangsu province as test material, after irradiation with ultraviolet lamp, it was stored in a packed carton containing new biological paper and stored at room temperature(28±1)℃. The rotting rate, weight loss rate, hardness, soluble solid content, malondialdehyde content and polyphenol oxidase activity of peach were measured every 1 d, the test span was 15 days. The results showed that the effect of UV-C combined with new biological paper was better than that of single UV-C, which was significantly better than blank control(P<0.05). On the 15 th day of storage, the rotting rate, the weight loss rate, MDA content and PPO activity of peach were lower than that of the control group, 62.35%, 54.93%, 50.67%, 32.85%,respectively. The respiratory peak was postponed from the 4 d to the 10 d, and the hardness and soluble solids were higher than the control group, 42.64%, 33.12%. UV-C combined with new biological paper can effectively reduce the rotting rate of peaches, reduce the water loss of peaches, keep the content of soluble solids in peaches, and inhibit the increase of MDA content and the increase of PPO activity in peaches. Therefore, it can be used as a new method in the field of peach preservation.

关 键 词：凤凰水蜜桃 短波紫外线 生物保鲜纸 常温保鲜 

分 类 号：TS255.3[轻工技术与工程—农产品加工及贮藏工程]