食品科学 ›› 2004, Vol. 25 ›› Issue (7): 90-92.

• 基础研究 • 上一篇    下一篇

热和紫外光对海藻酸钠降解影响

 马成浩, 于丽娟, 张义明, 彭奇均   

  1. 江南大学化学与材料工程学院,贵州省发酵工程与生物制药重点实验室
  • 出版日期:2004-07-15 发布日期:2011-10-24

Effects of Heat and Ultraviolet Radiation on Sodium Alginate’Degradation

 MA  Cheng-Hao, YU  Li-Juan, ZHANG  Yi-Ming, PENG  Qi-Jun   

  1. 1.The Chemical and Material Engineering Institute of Southern Yangtze University;2.Guizhou Province Key Laboratory of Fermentation Engineering and Biopharmacy
  • Online:2004-07-15 Published:2011-10-24

摘要: 测得从海带和马尾藻中提取的海藻酸钠的M/G比例分别为1.62和0.91。通过热稳定性实验,发现M/G比例为1.62的海藻酸钠在60℃加热,粘度已经开始下降;而M/G比例为0.91的海藻酸钠在80℃加热,粘度才开始下降。紫外光对海藻酸钠存在降解作用,随时间的增加,粘度不断下降;1%海藻酸钠稀溶液的降解速率约是含水量13.54%干品的13倍。

关键词: 海藻酸钠, M/G比例, 粘度, 热稳定性, 紫外光

Abstract: The M/G ratios of the sodium alginate extracted from the kelp and gulfweed were 1.62 and 0.91 respectively. Afterthe heat-proof testing, it was found that the sodium alginate viscosity with M/G ratio 1.62 began decreasing at 60℃, but thesodium alginate’ viscosity with M/G ratio 0.91 would not decrease until 80℃.Ultraviolet radiation would have at so a degradationeffect on sodium alginate and it would became obvious with the time. The degradation ratio of the 1% sodium alginate aquatic solutionwas thirteen times that of the dry sodium alginate with water content 13.54%.

Key words: sodium alginate, M/G ratio, viscosity, heat-proof, ultraviolet radiation