粒度大小对蓝莓皮渣表观结构及其理化特性的影响

Effect of particle size on apparent structure and physicochemical characteristics of blueberry pomace

以蓝莓皮渣为原料,经过粉碎处理,将其筛分得到不同粒度大小的粉末状蓝莓皮渣,通过测定不同粒度蓝莓皮渣的表观结构、主要营养成分含量和理化特性,分析粒度大小对上述指标的影响。结果表明:随着蓝莓皮渣粒度的减小,其组织结构完整性被破坏的越多,其主要营养成分含量、还原力和休止角随粒度的减小而增大,而持水力、持油力和溶胀性则随着粒度的减小呈现先增大后减小的趋势,其松装密度呈逐渐减小趋势,这为蓝莓皮渣的应用及深入研究提供理论参考。

Taking blueberry pomace as raw material,the powder of blueberry pomace with different particle size was obtained by sieving after grinding.The apparent structure,main nutrient content and physicochemical characteristics of blueberry pomace with different particle size were determined to analyze the influence of particle size on the above indexes.The results showed that with the decrease of the particle size of blueberry pomace,the more the integrity of its structure was destroyed.Its main nutrients content,reducing power and angle of repose increased with the decrease of the particle size,while the water holding capacity,oil holding capacity and swelling capacity first increased and then decreased with the decrease of the particle size,and its loose density gradually decreased,which provided a theoretical reference for the application and in-depth research of blueberry pomace.