摘要： 研究贮藏温度对蒲公英采后生理指标和品质的影响,探索适宜的贮藏温度,为蒲公英贮运技术的发展与延长供应期提供指导。设置25,10,2,-18℃4种贮藏温度,测定了蒲公英在贮藏过程中外观、营养成分含量和采后生理指标的变化。结果表明:采后蒲公英随着贮藏天数的增加,叶片逐渐黄化,粗纤维的含量升高,维生素C和绿原酸含量下降,硝酸盐含量先升高后降低;2℃下贮藏能够使采后蒲公英具有较高的叶绿素、维生素C、绿原酸,较低的硝酸盐和粗纤维含量,较低的细胞膜渗透率、MDA含量和较高的SOD活性,显著地延缓其衰老进程,延长贮藏寿命。
关键词:
贮藏,
温度,
蒲公英,
采后生理,
品质
Abstract: In order to accelerate development of storage and transportation technique of Taraxacum mongolicum,the effects of storage temperature on its postharvest physiology and quality were studied and the optimal storage temperature was explored.The changes of external appearance,nutritional ingredient contents,and postharvest physiology were investigated at 25℃,10℃,2℃,-18℃ storage temperature.The results indicated that with the increasing of storage time,the leaves etiolated,contents of crude-fiber increased,while vitamin C,chlorogenic acid decreased,nitrate contents up to the maximum at the 3th day after storage,then decreased gradually.Stored at 2℃,the contents of chlorophyll,vitamin C,chlorogenic acid were higher,nitrate and crude-fiber contents were lower.The lower of membrane permeability and MDA content,the higher activity of SOD significantly delayed senescence process and prolonged storage life of Taraxacum mongolicum.
Key words:
Storage,
Temperature, Taraxacum mongolicum,
Postharvest physiology,
Quality
中图分类号:
赵磊, 杨延杰, 林多. 贮藏温度对蒲公英采后生理和品质的影响[J]. 华北农学报, 2008, 23(3): 143-145. doi: 10.7668/hbnxb.2008.03.034.
ZHAO Lei, YANG Yan-jie, LIN Duo. Effects of Storage Temperature on the Postharvest Physiology and Quality of Taraxacum mongolicum[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2008, 23(3): 143-145. doi: 10.7668/hbnxb.2008.03.034.