摘要:
为研究贮藏期间α-萘乙酸甲酯(MENA)对马铃薯品质营养功能的影响及其残留动态变化,以"山东潍坊菜用马铃薯"为试材,分别用质量浓度40、80 mg/kg的MENA溶液进行喷洒处理,以清水处理作为对照,置于4 ℃条件下贮藏,定期(30 d)检测马铃薯的腐烂率、发芽率、干物质、淀粉、VC、还原糖、蛋白质、绿原酸含量及MENA残留量等品质指标。结果表明,与对照相比MENA能减低贮藏期马铃薯的腐烂率和发芽率,有利于马铃薯外观形态的保持;MENA能延缓马铃薯贮藏期间VC含量的降低(p<0.05)且使蛋白质含量升高(p<0.05),能使还原糖含量显著升高(p<0.05)并提升绿原酸水平(p<0.05);贮藏期间MENA残留未检出,提示MENA作为抑芽剂使用其残留风险较低。
Abstract:
Aiming to evaluate the effects of MENA on the quality nutrition function of potato tubers and its residual dynamics during storage, vegetable processing potato tubers from Weifang city in Shandong province were taken as the test material. The sprout inhibitor α-naphthyl acetate (MENA)was applied to potato tubers by a direct spray application at 40 and80 mg/kg for two treatment groups while the spraying water was for the control group. These groups were storaged at 4℃ for 150 days. Decay rate, sprout rate, reducing sugar, starch, dry matter, protein, vitamin C and chlorogenic acid content of potato tubers were detected every 30 days. The results showed that MENA could reduce potato tubers decay rate and sprout rate during storage, and could maintain the appearance of potato tubers compared with the control group. MENA could delay the reduction of VC content (p<0.05)and raise protein content (p<0.05)during potato tubers storage, it also could significantly increase the content of reducing sugar (p<0.05)and raise the level of chlorogenic acid (p<0.05). Residue concentrations of MENA on potato tubers were not detected during storage, suggesting that MENA had a lower risk of residue as a sprout inhibitor.
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