振动胁迫对蓝莓果实品质和抗氧化酶活性的影响

发布时间：2018-01-08 01:11

本文关键词：振动胁迫对蓝莓果实品质和抗氧化酶活性的影响　出处：《林业科学》2017年09期 　论文类型：期刊论文

【摘要】：【目的】研究物流运输过程中不同振动时间对蓝莓果实品质和抗氧化酶活性的影响,为其采后物流运输提供参考。【方法】以‘园蓝’蓝莓为试材,将预冷处理后的果实挑拣、分装,按冰果比1.6∶1的比例装入泡沫包装箱中,密封。采用模拟运输的方法,将泡沫包装箱固定于运输振动试验台上,在2.5 Hz振动频率条件下进行不同时长(12、24、36 h)的振动处理,以0 h处理为对照组。模拟运输振动试验结束后,立即测定不同振动时间条件下蓝莓果实品质和抗氧化酶活性。同时将其余样品继续贮藏于(0±0.5)℃保鲜冰箱中,进行贮藏期试验,每2天取样。【结果】与对照组相比,振动胁迫明显加速了蓝莓果实商品性的丧失,加速果实贮藏期内好果率、硬度及维生素C含量的下降,促使花色苷、总酚含量达到峰值时间缩短,加快了相对电导率、丙二醛含量的上升速度,加剧细胞膜结构的破坏,促进SOD活性增大及CAT、APX等抗氧化酶活性峰值提前出现。贮藏过程中,对照组的好果率、硬度及电导率与振动处理24 h、36 h差异显著(P0.05),对照组、振动处理12 h蓝莓果实的维生素C、TSS含量与振动处理36 h呈显著性差异(P0.05)。而对照组与振动处理12 h在果实硬度、TSS含量、Vc含量及SOD酶活性方面变化差异不显著(P0.05),花色苷、总酚含量,CAT、APX酶活性差异较小。【结论】运输振动对蓝莓品质的影响是逐渐累积的,物流运输过程振动时间越久对品质损伤越大,果实衰老进程越快。模拟物流运输时间在12 h以内,振动胁迫对蓝莓果实品质损伤较小,有利于保持果实贮藏期间的品质。
[Abstract]:[Objective] to study the influence of different time of vibration in the process of transportation and logistics of blueberry fruit quality and antioxidant activity, the Postharvest logistics to provide reference. [method] with 'gardenblue' blueberry as test materials, the pre cooling treatment after fruit picking, packing and sealing according to the ratio of 1.6: 1 ratio of ice a foam packing box, using the method of transport. The simulation of foam packaging box fixed on the transportation vibration test bench in vibration frequency 2.5 Hz under different time (12,24,36 h) of the vibration treatment, the treatment with 0 h as the control group. To simulate the transport vibration immediately after the end of the trial, and anti determination enzyme activity of blueberry fruit quality conditions of different vibration time. At the same time to the remaining samples stored in (0 + 0.5) C refrigerator preservation, storage test, sampling every 2 days. [result] compared with the control group, significantly accelerated the vibration stress of Blueberry The loss of fruit commodity, accelerate the good fruit rate of fruit storage period, the hardness decreased and the content of vitamin C, the anthocyanin, total phenolic content reached the peak time, speed up the relative conductivity, MDA content increased speed, increased the cell membrane damage, promote the activity of SOD increased and CAT, APX and other anti enzyme activity peak appeared earlier. During storage, the control group of the good fruit rate, hardness and conductivity and vibration treatment of 24 h, 36 h significant difference (P0.05), the control group, 12 h vibration treatment of blueberry fruit of vitamin C, TSS content and vibration treatment of 36 h showed significant difference (P0.05). 12 h in the control of fruit firmness, content of TSS group and vibration treatment, changes of Vc content and SOD activity was not significant (P0.05), anthocyanin, total phenolic content, CAT, differences in enzyme activity of APX is small. [Conclusion] the influence of vibration transport quality blueberries are cumulative,. The longer the duration of transportation, the greater the quality damage and the faster the fruit senescence. The simulated transportation time is less than 12 h, and vibration damage has little effect on blueberry fruit quality, which is good for keeping fruit quality during storage.

【作者单位】：浙江省农业科学院食品科学研究所农业部果品产后处理重点实验室浙江省果蔬保鲜与加工技术研究重点实验室中国轻工业果蔬保鲜与加工重点实验室;
【基金】：国家科技支撑计划课题(2015BAD16B06) 国家公益性行业(农业)科研专项(201303073) 国家自然科学基金项目(31501540) 浙江省公益技术研究农业项目(2014C32109)
【分类号】：TS255.3
【正文快照】： 蓝莓(Vaccinium spp.)为杜鹃花科(Ericaceae)越橘属(Vaccinium)多年生落叶灌木。我国原主要分布在长白山区、大小兴安岭等地,近年来发展较快,全国20余省份已有种植。蓝莓果肉细腻,甜酸适口,风味独特,营养丰富,被誉为“浆果之王”(郜海燕等,2013)。蓝莓一般成熟于5—8月,此时正

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