负载互叶白千层精油的Zein/Pullulan复合膜乳液对芒果保鲜贮藏品质的影响

Effect of Zein/Pullulan Polysaccharide Composite Coating Emulsion Loaded with Essential Oil of Melaleuca alternifolia on the Preservation and Storage Quality of Mango

为研究新型复合乳液对芒果贮藏品质的影响,制备了负载0、1%、2%(v/v)互叶白千层精油的玉米醇溶蛋白/普鲁兰多糖复合乳液,并对芒果进行涂膜处理,于20℃、RH 65%贮藏,定期测定指标。结果表明:3种复合乳液涂膜处理均能减缓芒果失重率的升高,且维持更高的果肉Vc含量,但对果肉TA和TSS含量影响不大;而负载互叶白千层精油的复合乳液还能有效地抑制芒果果实的呼吸作用,延缓果皮叶绿素的降解和类胡萝卜素含量的升高,其中负载1%互叶白千层精油的玉米醇溶蛋白/普鲁兰多糖乳液处理在延缓果实叶绿素的降解、减缓失重率的上升和维持Vc含量方面的效果更好。综上,负载1%互叶白千层精油的玉米醇溶蛋白/普鲁兰多糖乳液更利于维持芒果的贮藏品质。

In order to study the effect of the new composite emulsion on the storage quality of mango,zein/pullulan polysaccharide emulsion loaded with 0,1%and 2%(v/v)essential oil of Melaleuca alternifolia was prepared in this study,and the mangoes were coated with a film then stored at 20℃and at 65%RH,and the indexes were measured regularly.The results showed that the three composite emulsion coating treatments could all slow down the increase of weight loss rate of mango and maintain a higher content of Vc in the pulp,but had little effect on the content of TA and TSS in the pulp.The composite emulsion loaded with the essential oil of Melaleuca alternifolia could also effectively inhibit the respiration of mango fruit,delay the degradation of chlorophyll and the increase of carotenoid content in the peel.Among them,the treatment of zein/pullulan polysaccharide emulsion loaded with 1%essential oil of Melaleuca alternifolia had a better effect on delaying the degradation of chlorophyll,slowing down the increase of weight loss rate and maintaining the content of Vc.In conclusion,the zein/pullulan polysaccharide emulsion loaded with 1%essential oil of Melaleuca alternifolia was more conducive to maintaining the storage quality of mango.