Process of extracting flaxseed gum powder by abrasion

Abstract: In order to improve the comprehensive utilization benefits of flaxseed processing, and to resolve some outstanding problems in the present processing of flaxseed gum extraction, the ideal of obtaining flaxseed gum by means of a rotating sand roller abrading of the surface of flaxseeds was conceived on the basis of the structural characteristics that the flaxseed gum is in the outermost layer of flaxseeds, and of the working principle that the high-speed rotating sand roller can abrade the surface of materials. It was tested with a sand roller rice mill used in a laboratory. The results show that: using the sand roller grinding , controlling flaxseed filling rate at 40%-80%, were able to obtain flaxseed gum powder successfully, extraction of flaxseed gum powder by grinding technology is feasible; at the loading rate 40%, grinding time 200s ,defatted flaxseed gum powder rate was the highest at 6.06% ± 0.51%; at the loading rate 80%, defatted flaxseed gum yield of the grinding equipment was the highest, at grinding time 200s, viscosity of the flaxseed gum powder was (5200±680) mPa.s, much higher than the current commercially available dry flaxseed gum product viscosity and lower than that of commercially available wet flaxseed gum product viscosity. By contrast detection color, taste, acid value and peroxide value of the pressed flaxseed oil before and after grinding, grinding process has no obvious effect on pressing flaxseed oil quality. Using grinding method extraction of flaxseed gum powder first and then pressing flaxseed oil, will increase flaxseed processed products, and improve the processing benefit.