不同采后处理对云南油桃和水蜜桃的贮藏保鲜效果对比

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25d,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。

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

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.