摘要
为了探索使台湾青枣(Ziziphus mauritiana Lamk.)果实具有良好保鲜效果的绿色冷藏前处理技术及其抗活性氧损伤的生理机理,采用正交试验设计法,对台湾青枣果实经过浸钙、壳聚糖浸泡和温烫处理,探讨3因素处理后对台湾青枣低温冷藏效果的影响。结果表明,各因素处理均降低果实重量损失率;浸钙和温烫处理提高好果率,壳聚糖浸泡处理降低了好果率;各因素处理的果肉可溶性固形物含量(TSS)与各自对照的无显著差异,果肉可滴定酸含量(TA)则在不同时间与各自对照出现不稳定相对高低变化,果肉固酸比(TSS/TA)显著高于各自对照的或与对照的差异不显著;各因素处理均降低了果肉丙二醛(MDA)含量;3因素处理对果肉PPO活性具有一定的抑制效果;浸钙处理以提高果肉SOD活性为主,壳聚糖浸泡处理则以抑制果肉SOD活性为主,温烫处理对果肉SOD活性无显著影响;浸钙和温烫处理对果肉POD活性无抑制作用,且在短暂时间里还能促进其活性升高,壳聚糖浸泡处理则在前15天对果肉POD活性无影响;3因素处理对果肉CAT活性无抑制作用,在高峰期还呈现提高果肉CAT活性的效果。可见,浸钙和温烫处理能改善台湾青枣果实贮藏效果和减轻果肉活性氧损伤。
In order to research the green pre-treatment technology of Indian jujube fruits cold-storage improving the effects on fruits qualities and the physiological mechanisms on anti-oxidation, the experiment was designed in orthogonal test. Indian jujube fruits were treated with 3 factors such as calcium and chitosan and hot water. The influences of the 3 factors on the storage of Indian jujube fruits were explored in this paper. The results indicated that： the treatment of every factor reduced the rate of weight loss of fruits. The treatments calcium and hot water increased the rate of intact fruit, and the treatment chitosan reduced the rate of intact fruit. The treatment of every factor didn’t influence the TSS in flesh, and the treatments led to the change in TA in flesh, and the rate TSS/TA in flesh of the treatments were significantly higher than that of CK or had insignificant difference between the treatments and CK. The treatment of every factor reduced the content of MDA in flesh. The treatments could inhibit the activity of PPO in flesh. Basically the treatment calcium increased the activity of SOD in flesh, and the treatment chitosan reduced the activity of SOD in flesh, and the treatment hot water didn’t influence the activity of SOD in flesh. The treatments calcium and hot water didn’t inhibit the activity of POD in flesh and increased its activity during some short periods. The treatment chitosan had insignificant influences on the activity of POD before the early 15 days. The treatments didn’t inhibit the activity of CAT in flesh, and increased the activity of CAT in flesh at the peak. In summary, the treatments calcium and hot water could improve the storage effects and loosen the injuries of reactive oxygen species.
出处
《中国农学通报》
CSCD
2013年第22期129-134,共6页
Chinese Agricultural Science Bulletin
