Technique method for converting soybean hulls and peels into dietary fiber

Abstract

The invention discloses a technique method for converting soybean hulls and peels into dietary fiber for solving the problems that a existing method for converting soybean hulls and peels into dietary fiber has overhigh technique temperature, the prepared product has dark color, coarse particles, peculiar smell, poor mouthfeel and low fiber content, and is difficult to bleach. According to the technical scheme, the technique method comprises the following steps: coarsely grinding soybean hulls and peels, then performing acid-process hydrolysis by edible 2N HCl, washing to be neutral, and then performing centrifugal dewatering so as to obtain acid-hydrolyzed dehydrated granules; performing alkaline-process hydrolysis on the acid-hydrolyzed dehydrated granules by edible 2N KOH, washing to be neutral, and then performing centrifugal dewatering so as to obtain alkali-hydrolyzed dehydrated granules; and finally, performing hot air drying and fine grinding on the alkali-hydrolyzed dehydrated granule to obtain the product. The technique is simple, the production cost is low, the decoloring effect is good, no peculiar smell is caused, good mouthfeel is achieved, the degradation effect is good, crushing is easy and the fiber content is high.

Description

technical field [0001] The invention relates to the field of food processing, in particular to a process for converting soybean hulls into dietary fiber. Background technique [0002] Residue after soybean processing - soybean hulls are rich in fiber, pigments and other plant compounds, especially cheap and abundant high-quality dietary fiber resources. This type of dietary fiber can prevent constipation, detoxify and prevent cancer, and promote intestinal health, etc. It has multiple functions, and it has strong oil-holding, water-holding and volume-enhancing properties. It can be used in pastries, biscuits, puffed foods and various health drinks. It is an ideal natural additive and flour quality improver. Add it to Food can also improve water retention and shape retention of food, improve freeze-thaw characteristics, etc. The further processing of soybean hulls into dietary fiber is a subject that technical personnel are actively studying at present. [0003] At present,...

AI Technical Summary

Problems solved by technology

The above methods have advantages and disadvantages. The traditional acid method and alkali method are usually carried out at high temperature (100-110°C). Although the process is simple and the production cycle is short, it is difficult to decolorize. The process temperature is too high and the color of the obtained product is dark. , Coarse particles, difficult to bleach, odor, poor taste, low fiber yield; membrane separation method is effective, but due to technical limitations, it is still unable to be applied industrially; fermentation method has a long cycle and the obtained fiber content is also improved.

Images