不同采后处理对云南油桃和水蜜桃的贮藏保鲜效果对比

Comparison of Fresh-keeping Effects of Different Post-harvest Treatments on Yunnan Nectarine and Honey Peach

摘要:

为探索延长云南油桃和水蜜桃保鲜期的方法，以云南文山黄金油桃和红蜜桃为试材，研究了1-MCP、ClO2、2种涂膜处理对黄金油桃和红蜜桃两种桃贮藏保鲜效果，结果表明：虽然1-MCP处理对两种桃L*、a*值和b*值的维持均有效果，但云南黄金油桃和红蜜桃适宜的采后处理方法不同；1-MCP处理的黄金油桃色差值最高，贮藏25 d，L*、a*值和b*均维持较高，相对电导率值最低（54.43%），质量损失率较低（1.05%），TSS含量为16.27%最高，表明1-MCP处理是较适宜黄金油桃贮藏保鲜的处理。ClO2处理有利于红蜜桃外观的维持，贮藏25 da*值和b*值均高于其他处理，且具有最低的质量损失率和最高的TSS含量，相对电导率值为55.81%，低于1-MCP处理；表明ClO2处理是较适宜红蜜桃的采后处理。

Abstract:

In this paper, gold nectarine and red peach from Wenshan in Yunnan province were used as research materials, and water treatment was used as control. 1-MCP, ClO2 and 2 coatings were used to treat golden nectarine and red peach and to study the effects of different post-treatment on peach fresh-keeping. The results showed that although the 1-MCP treatment has an effect on the maintenance of L*, a* and b* values of the two peaches, the suitable post-harvest treatment methods for Yunnan golden nectarines and red peaches are different. For the 1-MCP-treated gold nectarine, the difference was the biggest, after 25 days, the L*, a* and b* values were still high, the relative conductivity value was the lowest (54.43%), the mass loss rate was lower (1.05%), and the TSS content was 16.27%, indicating that 1-MCP treatment is more suitable for the storage and preservation of golden nectarine. ClO2 treatment is beneficial to the maintenance of the appearance of red peach. The a* value and b* value after storage for 25 days were higher than other treatments, and had the lowest mass loss rate and the highest TSS content. The relative conductivity value was 55.81%, lower than 1-MCP treatment, indicating that ClO2 treatment is more suitable post-harvest treatment of red peach.