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投稿时间:2018-10-30
投稿时间:2018-10-30
中文摘要: 探讨1-甲基环丙烯(1-methylcyclopropene,1-MCP)、丁香、甘草提取液及壳聚糖复合处理对脆红李常温货架期品质的影响。结果表明,处理组 2、3、12[1-MCP(μL·L-1)∶丁香提取液(%)∶甘草提取液(%)∶壳聚糖(%)分别为 0.25∶2.00∶0.50∶1.50、0.25∶1.00∶2.00∶1.00、1.50∶1.50∶1.00∶0.50]能明显减缓脆红李果实硬度降低和失重增加,抑制脆红李果实在贮藏过程中可溶性固形物含量下降及丙二醛含量上升,提高李果实贮藏品质。逐步回归分析结果显示,脆红李硬度的保持与1-MCP、丁香、甘草提取液和壳聚糖的添加有关;质量的保持主要与丁香和甘草提取液的添加有关。对脆红李货架期硬度变化建立一级动力学模型,以硬度下降30%为货架期终点,对照组货架期为13 d,处理组2、3、12货架期分别为17、19、21 d;对脆红李货架期质量变化建立零级动力学模型,以质量下降5%为货架期终点,对照组货架期为5 d,处理组 2、3、12 货架期为 19、16、15 d。
Abstract:The effects of comprehensive treatment with 1-methylcyclopropene(1-MCP),the extracts of clove,licorice and chitosan on the shelf life quality of Prunus salicina cv. ′Cuihongli′at room temperature were investigated.The results showed that the treatment groups of 2,3 and 12[1-MCP(μL·L-1)∶clove extracts(%)∶licorice extracts(%)∶chitosan(%)=0.25∶2.00∶0.50∶1.50,0.25∶1.00∶2.00∶1.00,1.50∶1.50∶1.00∶0.50]could significantly slow down the decrease of fruit hardness and increase of weight loss,inhibit the decrease of soluble solids content and the increase of malondialdehyde content in the storage process,and improve the storage quality of P.salicina cv.′Cuihongli′.The results of stepwise regression analysis suggested that the hardness of P.salicina cv.′Cuihongli′was related with the addition of 1-MCP,extracts of clove and licorice,and chitosan;while its weight retention rate was related with the addition of clove and licorice extracts.A first-order kinetic model was established for the change of the hardness of P.salicina cv.′Cuihongli′during its shelf life.When 30%of hardness decrease was set as the endpoint of shelf life,the shelf life of the control group was 13 days,while those of the groups with the treatment groups 2,3 and 12 were 17,19 and 21 days,respectively;a zero-order kinetic model was established for the change of the weight retension rate of P.salicina cv.′Cuihongli′during its shelf life.When 5%of weight loss was set as the endpoint of shelf life,the shelf life of the control group was 5 days,while those groups with the treatment groups 2,3 and 12 were 19,16,and 15 days,respectively.
文章编号:201907019 中图分类号: 文献标志码:
基金项目:泸州市科技计划项目(2016CDLZ-N21)
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