2results about How to "Avoid thermal denaturation" patented technology

The utility model relates to the technical field of flour processing, in particular to a nutritional flour production device which comprises a box body, the interior of the box body is rotationally connected with the feeding pipe, one side of the feeding pipe is in pipeline connection with an air conveying pipe, the end, away from the feeding pipe, of the air conveying pipe is in pipeline connection with a refrigeration fan, the interior of the feeding pipe is uniformly and fixedly connected with a plurality of air dispersing pipes, one end of each air dispersing pipe is in pipeline connection with an air conveying pipe, and the end, away from the air conveying pipe, of each air dispersing pipe leads to the inner grinding disc; according to the utility model, through the cooperation of the refrigeration fan and the air dissipation pipe, cold air flow is conveyed to the inside, heat generated in the grinding process is absorbed, nutrient substance structures in grains are effectively prevented from being heated to be denatured or lost, and the produced flour is ensured to be high in nutritional value and good in quality, and the inner millstone, the middle millstone and the outer millstone are arranged, so that the production efficiency is improved. And multi-stage grinding from coarse to fine is realized, so that grains can be ground more uniformly and comprehensively, and the ground flour is finer and smoother.

The application discloses a preparation method of sunflower seed protein powder based on dry separation. The method combines subcritical extraction, drying treatment, fine crushing, screening and airflow classification technology to efficiently prepare sunflower seed protein powder with high natural functional property retention rate. The specific steps include: firstly, finely crushing selected sunflower seeds to obtain sunflower seed coarse powder, then using subcritical extraction technology to defat the sunflower seed coarse powder to obtain sunflower seed meal; then, fine crushing the sunflower seed meal and drying treatment to adjust the moisture content; then, the crushed product after drying treatment is preliminarily screened through a vibrating screen; then, the undersize components obtained by screening are separated through an airflow classifier, and finally, sunflower seed protein powder is successfully prepared. The application takes dry separation technology as the core to prepare sunflower seed protein powder, and has high protein content and extraction rate. Compared with the traditional wet method, the method is simple in process and low in cost, can effectively reduce protein denaturation and environmental pollution, and is more conducive to retaining the natural functional properties of sunflower seed protein.