干燥方式对方便橡子粉皮老化特性影响的研究

Effects of different drying methods on the retrogradation property of convenience acorn vermicelli

摘要: 控制粉皮老化度是生产高品质方便粉皮的关键。本文以红外分析仪、X-射线衍射仪、快速黏度分析仪分析研究不同干燥方式对方便橡子粉皮老化特性的影响,并采用扫描电子显微镜对粉皮的微观结构进行了研究和评价。结果表明:与热风干燥相比,热风-微波联合干燥时粉皮的碘呈色度显著升高（p<0.05）、红外吸光度和回生值显著降低（p<0.05）、结晶度也呈降低的趋势。粉皮微观结构更加松散,孔洞较大。热风-微波联合干燥时粉皮的老化程度较低。

Abstract: Control retrogradation is key to producing high quality convenience acorn vermicelli.In this paper,Infrared analysis( FI- RT),X- ray diffraction( XRD) and rapid viscosity analyzer( RVA) were utilized to analyze the effects of drying methods on retrogradation property of convenience acorn vermicelli,and then it was characterized by scanning electron microscope( SEM) to analyze and value its microstructure.The results showed that compared to the hot air drying,the index of the hot- microwave drying as IOD decreased significantly( p < 0.05),infrared absorbance and retrogradation value increased significantly( p < 0.05),crystallinity tended to decreased. The microstructure was more loosely,holes was more larger. Therefore,hot- microwave dried products showed the lower degree of retrogradation.