effect of modified atmosphere packaging on the postharvest life and quality of mango cv.
samar bahisht chaunsa stored at chilling temperature.
气调包装对芒果采后寿命和品质的影响.samar bahisht chaunsa stored在低温条件下存储
ali, zohaib1，malik, aman ullah1，khan, ahmad sattar1，amin, muhammad1，rehman, abdul2
1postharvest lab., institute of horticultural sciences, university of agriculture, faisalabad, pakistan;
2department of plant pathology, university of agriculture, faisalabad, pakistan.
abstract
modified atmosphere packaging (map) increases the postharvest life of fresh fruits by suppressing metabolic activities with modified in-package atmosphere. this study was aimed to explore the potential benefits of map technology combined with low temperature storage in mango cv. 'samar bahisht chaunsa' to extend its shelf life. physiologically mature mangoes after harvest were de-sapped (0.5% lime solution), dipped in hot water (52±2°c for 5 min) fungicidal (0.5 ml prochloraz l-1) solution, packed in 5kg cardboard boxes (t1; biofresh®, t2; xtend®, t3; unbagged) and stored at 13°c±1, rh: 85-90% for 7, 14, 21, 28 and 35 days. following cold storage, fruit were subjected to two different ripening temperatures (32 and 24°c) with a 24 h 100 ppm ethylene treatment. data related to physical, physiological, biochemical, organoleptic and marketable attributes was collected. among map bags, the desirable atmosphere comprising high co2 and low o2 concentration was observed in biofresh® bags. tolerance of mangoes under elevated co2 atmospheres and chilling injury (ci) decreased when storage period exceeded more than 14 days with onset of discolouration issues. overall, bagged fruit had minimum weight loss, ci intensity, shriveling and remained firmer in comparison to control. maximum peel colour development was observed in fruit stored up to 14 days in biofresh® bags when ripened at high temperature (32±1°c). whereas, fruit kept in xtend® bags and those without map only developed acceptable peel colour up to 7 days of cold storage. fruit kept in xtend® bags exhibited minimum ethylene levels (ppm) and endured the least loss in weight and firmness but remained mostly green. bagged fruit had a higher vitamin c content and lower ta in comparison to unbagged fruits. in conclusion, 'samar bahisht chaunsa' stored at 13°c in biofresh® bag showed better visual appearance, palatability and nutritive values as compared to xtend® bag and those without map
气调包装（map）通过抑制包装气中的代谢活性，提高了新鲜水果的采后寿命。本研究旨在探讨map技术与芒果低温贮藏相结合的潜在效益为了延长保质期。收获后生理成熟的芒果脱去果皮（0.5%石灰溶液），浸入热水（52±2°c，5分钟）杀菌剂（0.5毫升咪鲜胺l-1）溶液中，装入5公斤纸箱（t1；biofresh®t2；xtend®t3；未包装）中，在13°c±1，相对湿度：85-90%下储存7、14、21、28和35天。冷藏后，果实在两种不同的成熟温度（32和24°c）下，用100 ppm乙烯处理24小时。收集有关物理、生理、生化、感官和市场属性的数据。在map袋中，在biofresh®袋中观察到理想的大气，包括高co2和低o2浓度。当贮藏期超过14天时，芒果在高co2气氛下的耐性和冷害（ci）降低，并出现变色现象。总的来说，与对照相比，套袋果实的失重率、ci强度、干缩度和硬度。在高温（32±1°c）下成熟时，在biofresh®袋中储存14天的水果中观察到的果皮颜色发育。然而，存放在xtend？袋中的水果和那些没有map的水果在冷藏7天后才出现可接受的果皮颜色。储存在xtend®袋中的水果乙烯含量（ppm），重量和硬度损失最小，但大部分保持绿色。套袋果实含量较高，ta含量较低。总之，“samar bahisht chaunsa”存放在13°c的biofresh®袋中，与xtend®袋和无map袋相比，具有更好的外观、适口性和营养价值
keywords:chilling injury，mango，map，quality，shelflife，skin discoloration
关键词：冷害、芒果、map、品质、货架期、皮肤变色