闽赣两地凉粉草胶的比较研究

The Comparison Research between Fujian MBG and Jiangxi MBG

凉粉草是我国南方用于制作凉粉的一种草本植物,其叶中含有凉粉草胶特有的多糖胶质。主要从胶得率、胶中主要化学成分含量,胶中中性糖含量、半乳糖醛酸含量以及中性单糖的组成,胶的特性粘度和胶与木薯淀粉所形成的混合凝胶的质构特性方面对闽赣两地的凉粉草胶进行了比较。结果表明:两地胶在胶得率,胶中主要化学成分含量,胶中中性糖含量、半乳糖醛酸含量以及中性单糖的组成方面,差异不显著;但在胶的特性粘度上和在以两种胶所制得的凉粉的质构特性方面差异显著,其中福建凉粉在硬度上比江西胶高4.799 g,弹性系数高0.2,内聚力系数高0.099。综合以上分析表明,福建凉粉草胶在凝胶性能上要略优于江西凉粉草胶。

Liangfen grass is a kind of herbal plant which is used to make Liangfen （a Chinese food , it seems like a cool jelly）in South China. Its leaves include a unique polysaccharide gum named Mesona Blume Gum,which is also abbreviated by MBG. The comparison was made between Fujian MBG and Jiangxi MBG from the gum yield ,the proximate chemical compositions ,the neutral sugar content ,galacturonic acid content and neutral monosaccharide composition of the gum, the intrinsic viscosity of the gum and the textural properties of the MBG/tapioca starch mixed gel. The results indicated：in the aspect of the gum yield,the proximate chemical compositions ,the neutral sugar content ,galacturonic acid content and neutral monosaccharide composition of the gum,there were no significant difference; while in the aspect of the intrinsic viscosity and the textural properties of the mixed gel made from MBG ＆ tapioca starch, there were significant difference, and Fujian＇s cool jelly Was 4.799 g more than Jiangxi＇s in the hardness aspect, in the springiness aspect, Fujian＇ s was 0.2 more than Jiangxi＇s,in the cohesiveness aspect , Fujian＇ s was 0.099 more than Jiangxi ＇s. To sum up from the above analysis,it showed that Fujian MBG was a little bit superior than Jiangxi MBG in gelling capacity.