摘要
目的 分析仙草-山药粉凝胶性能。方法 以凝胶质构参数和持水性为指标,分析仙草-山药粉凝胶的成胶条件,并采用红外光谱、扫描电镜和示差扫描量热仪对其结构进行分析。结果 在仙草多糖(Mesona chinensis polysaccharide,MCP)浓度0.6%、山药粉含量2.0%、pH为10.0的条件下,仙草-山药粉凝胶性能最佳,添加氯化钠会破坏凝胶网络结构。仙草-山药粉凝胶质构性能接近仙草-玉米淀粉凝胶,且具有更强的持水能力。红外光谱、扫描电镜和热性能分析发现,仙草-山药粉凝胶以非共价键形成网络结构,凝胶壁厚且孔隙结构均一,高温下不易解离,具有良好的热稳定性。结论 仙草-山药粉凝胶性能良好,山药可替代玉米淀粉应用于仙草凝胶类健康食品的工业化生产。
Objective To analyze the properties of Mesona chinensis-Rhizoma dioscorea gels.Methods The gel-forming conditions of Mesona chinensis-Rhizoma dioscorea gels were analyzed using the gel texture parameters and water-holding capacity as indicators,and their structures were analyzed by infrared spectroscopy,scanning electron microscopy and differential scanning calorimetry.Results The best performance of the Mesona chinensis-Rhizoma dioscorea gels was achieved under the conditions of 0.6% Mesona chinensis polysaccharide concentration,2.0% Rhizoma dioscorea powder content and pH 10.0,and the addition of sodium chloride would destroy the gel network structure.The textural properties of Mesona chinensis-Rhizoma dioscorea gels were close to those of Mesona chinensis-corn starch gels and had stronger water holding capacity.Infrared spectroscopy,scanning electron microscopy and thermal property analysis showed that the Mesona chinensis-Rhizoma dioscorea gels formed a network structure with non-covalent bonds,and the gel walls were thick and the pore structure was homogeneous,which was not easy to dissociate at high temperature and had good thermal stability.Conclusions Mesona chinensis-Rhizoma dioscorea gel has good performance,and Rhizoma dioscorea can be used as a substitute for corn starch in the industrial production of Mesona chinensis gel-based health foods.
作者
李晓柯
何传波
魏好程
熊何健
LI Xiao-Ke;HE Chuan-Bo;WEI Hao-Cheng;XIONG He-Jian(College of Ocean Food and Biological Engineering,Jimei University,Xiamen 361021,China)
出处
《食品安全质量检测学报》
CAS
北大核心
2022年第16期5187-5192,共6页
Journal of Food Safety and Quality
基金
福建省区域发展项目(2019N3012)
福建省科技计划项目(2019N0014)。
关键词
仙草多糖
山药粉
凝胶
质构特性
Mesona chinensis polysaccharide
Rhizoma dioscorea powder
gel
texture characteristics
