The Research of Longan Fresh-keeping Packaging Technique
The longan is suitable for the tropical zone subtropics in heat season. The flesh fruit is much in juicy,low in acid, high in sugar. The keep fresh techniques are the civilian traditional technique, low temperature gasadjusting technique, medicament preventing decayed technique and smoking sulfur fresh-keeping technique. Theexperiment used the method of comparative experiments. There were two packaging materials, including PA/PEcompound membrane and PE membrane. Each material corresponded two parts of experiments, soaking specificdensity of NaCl and Vc solution, and boiling the longan in boiling water for 5~10s. The experiment indicated that,the longan after being boiled tasted best but looked a little bad. A certain density of NaCl or Vc solution wouldincrease the speed of rotting. Vc and NaCl mixture could slow down the speed of rotting, keep longan fresh for along time and make sure that the juicy was sweet. Comparing with common longan on sales, these methods couldall reduce the lost of sweet juicy. Also, comparing the two packaging materials, we could see that, PA/PEcompound membrane had a better effect to keep longan fresh. On conclusion, it was the most effectivefresh-keeping method to use Vc and NaCl mixture and PA/PE compound membrane.
Chen Xie Li Li Cai Jingrui Wang Mingzhi
College of Materials Science and Technology Beijing Forestry University Beijing, China
国际会议
The 17th IAPRI World Conference on Packaging(第17届世界包装大会)
天津
英文
396-398
2010-10-12（万方平台首次上网日期，不代表论文的发表时间）