摘要
将真空冷冻干燥技术应用于葡萄籽原花青素的制备,通过试验得出冻干过程的基本工艺参数为:冷冻终点温度-34℃,加热板温度35℃,干燥室压强66.7Pa,料液浓度2%,料液厚度11mm。同时建立了升华干燥时间与料液厚度、含水量之间的数学模型,为其它天然色素的冻干工艺提供了理论基础。
The sublimation - drying during vacuum freeze - drying technology of grape seed proanthocyanidin was studied. The optimal parameters of the technology were obtained： freezing temperature, - 34℃ ; heating - board temperature, 35℃ ; drying chamber pressure, 66.7 Pa; material concentration, 2%; and material thickness, 11mm. The sublimation- drying mathematical model of freezing time, material thickness and moisture content was established, which provided theoretical foundation for freeze -drying technology of natural pigment.
出处
《江西农业学报》
CAS
2007年第1期77-79,共3页
Acta Agriculturae Jiangxi
基金
陕西师范大学研究生培养创新基金项目(2006CXS010)
关键词
葡萄籽
原花青素
冻干
数学模型
工艺
升华干燥
Grape seed
Proanthocyanidin
Freeze- drying
Mathematical modal
Technology
Sublimation- drying
