NO对延长芒果货架期的影响研究

Effect of Nitric Oxide Treatment on Extending the Postharvest Life of Mangifera indica

为探讨用NO进行芒果保鲜的新方法,以硝普钠(SNP)为NO供体,采用不同浓度的SNP浸泡处理芒果(Mangifera indica L.‘Tainong No.1’),研究芒果贮藏期间的内外品质的变化。结果表明,10μmol/L的SNP处理能够有效推迟芒果硬度下降、抑制果实转黄、控制重量损失、提高好果率、降低病害指数、控制可溶性固形物的变化,其货架期延长3～4天。640μmol/L和1280μmol/LSNP处理对芒果产生明显的毒害作用,且表现出随浓度的升高毒害加重的趋势。SNP处理能够控制芒果的各种内外品质的劣变,但有一定的浓度范围。超过这范围,反而起毒害作用。

In order to discuss a new preservation method with NO for Mangifera indica,using sodium nitroprusside （SNP） as a nitric oxide （NO） donor,studied the effects of Mangifera indica L.＇ Tainong No.1 ＇ with different concentrations of SNP treatments,the changes of Quality of internal and external during storage period.The result showed that,the treatment of 10 μmol/L of SNP can effectively delayed the decrease in hardness,inhibit yellow rate of fruit,control weight loss,increase good fruit rate,lower disease index.The store life could extend by 3-4 days.The treatment of 640 μmol/L and 1280 μmol/L of SNP produced a significant toxicity to Mangifera indica,and demonstrated the trend that increased toxicity with increasing concentration.The SNP treatment could control the Decrease of internal and external qualities of mango,but there was a certain concentration range.Exceed this range,It will produce toxic effect.