以阳丰甜柿为研究对象,将甜柿放入便携式气体调控保鲜箱中,然后加入1-MCP药包(浓度为1μL/L)后置于精准相温库贮藏,于贮藏30 d和60 d后做常温货架试验,分析贮藏微环境气调对甜柿品质、生理和挥发性成分的影响。结果表明:与箱式气调(TCK)相比,1-MCP处理结合箱式气调(TS)的贮藏微环境气体调控对不同贮藏期后甜柿货架品质调控效果相似,能够有效维持甜柿果皮的亮度和颜色饱和度,减缓果肉硬度、凝聚性、回复性和咀嚼性的下降,延缓货架后期果实可溶性固形物含量的下降,降低果实呼吸强度和乙烯生成速率。电子鼻分析显示,甜柿挥发性成分以萜烯类为主,随着贮藏期的延长,挥发性成分中氮氧化物含量有所增加;TCK贮藏30 d货架3 d椭圆距离与TS贮藏30 d货架12 d相近,TCK贮藏60 d货架6、9 d椭圆距离与TS贮藏60 d货架9d重叠,表明了加入1-MCP的贮藏微环境气体调控有利于甜柿贮后货架期挥发性成分的维持,分析结果与生理品质指标相吻合。因此,加入1-MCP的贮藏微环境气体调控更有利于甜柿的保鲜。
Youyou sweet persimmons and 1-MCP cartridge bag(concentration of 1μL/L) were together placed in portable gas regulation preservation boxes and stored in accurate phase temperature.Two tests were performed at room temperature after storing for 30 d and 60 d to analysis the effects of microenvironment gas regulation on quality,physiology and volatile component of sweet persimmons.The result showed that compared with box-type gas regulation(TCK),microenvironment gas regulation with 1-MCP combined with box-type gas regulation could effectively maintain fruit brightness and color saturation,slow down the decrease of firmness,coherency,resilience and chewiness,delay the decline of total soluble solids content during late shelf life and reduce fruit respiratory intensity and ethylene production rate.E-nose analysis showed that the primary volatile component of sweet persimmon was terpene;nitric oxide content in volatile component increased with the rise of storage time.Ellipse distance between TCK in shelf life of 3 d after storage of 30 d and TS in shelf life of 12 d after storage of 30 d were very close;and ellipse distance between TCK in shelf life of 6 d,9 d after storage of 60 d and TS in shelf life of 9 d after storage of 60 d were overlap.This indicated that microenvironment gas regulation with 1-MCP is better in maintaining the volatile component of sweet persimmon during shelf life after accurate phase temperature storage.The analysis was similar with the change of quality and physiology indexes.Therefore,store with microenvironment gas regulation combined with 1-MCP was the best freshkeeping method for sweet persimmon.
