摘要
目的:研究不同干燥工艺对金钗石斛叶品质的影响,为改进该药材的初加工和扩大石斛药材的药用部位提供理论依据。方法:以金钗石斛叶为原材料,采用热风干燥、微波干燥、真空干燥和真空冷冻干燥4种不同干燥方式对金钗石斛叶进行干燥,探讨4种方式对金钗石斛叶色泽、微观结构、总多糖和石斛碱含量的影响。结果:真空冷冻干燥产品色泽保持最好,优于其他3种干燥方式。不同干燥方法对样品所呈现的微观结构有所区别。金钗石斛叶经真空冷冻干燥、真空干燥、热风干燥及微波干燥后总多糖质量分数分别为3.11%,3.02%,2.81%和2.74%。不同干燥工艺对金钗石斛叶总多糖含量的影响较大,而对石斛碱含量则影响很小。结论:从成本方面考虑,热风干燥方式下的金钗石斛叶色泽较好,有效成分含量较高,且所需设备简单、节能、处理量大,在企业加工中值得推广应用。
Objective：The effect of different drying methods on the product quality of Dendrobium nobile leaves were investigated to provide the theoretical references for the development of processing technologies of D.nobile leaves and the expansion of medicinal parts of this herb.Method：D.nobile leaves were dried by four drying methods,including microwave drying,hot air heating,vacuum drying and vacuum freeze drying,then the impacts of different drying technologies on the color,microstructure,contents of total polysaccharides and dendrobine of D.nobile leaves were investigated.Result：The results showed that the color of vacuum freeze drying products was bright and better than the hot air drying,microwave drying and vacuum drying.Different drying methods differed in the microstructure of samples.The content of total polysaccharides in D.nobile leaves was 3.11% in vacuum freeze drying,3.02% in vacuum drying,2.81% in hot air drying and 2.74% in microwave drying.There was not much difference of drying methods in the dendrobine content.Conclusion：In the field of expenditure,D.nobile leaves have higher content of functional components under hot air drying,which has operability and energy consercation,it can be extended in the application of D.nobile leaves.
作者
孟映霞
马朝阳
王洪新
梅娜娜
宋小蒙
MENG Ying-xia MA Chao-yang WANG Hong-xin MEI Na-na SONG Xiao-meng(National Engineering Research Center for Functional Food, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China)
出处
《中国实验方剂学杂志》
CAS
CSCD
北大核心
2017年第15期26-30,共5页
Chinese Journal of Experimental Traditional Medical Formulae
基金
中央高校基本科研业务费专项(JUSRP51501)
金钗石斛资源精深加工系列产品的研究与开发项目(150035)
关键词
金钗石斛叶
干燥方式
多糖
石斛碱
微观结构
色泽
Dendrobium nobile leaves
drying method
polysaccharides
dendrobine
microstructure
color
