Method for preparing dietary fiber of lotus seed shells by virtue of microwave-assisted enzymolysis

Abstract

The invention discloses a method for preparing dietary fiber of lotus seed shells by virtue of microwave-assisted enzymolysis. The method comprises the following steps of: drying the lotus seed shells, smashing and sieving the dried lotus seed shells to obtain solid powder of the lotus seed shells, adding water into the solid powder to obtain a mixture of the lotus seed shell powder and the water, performing microwave-assisted enzymolysis treatment on the mixture by complex enzyme A (namely alpha-amylase and saccharifying enzyme), performing microwave-assisted enzymolysis treatment on the mixture by complex enzyme B (namely papain and bromelain), inactivating the enzyme, performing static settlement on the mixture at a low temperature, filtering the mixture, and drying filtered residues, thus obtaining the dietary fiber of the lotus seed shells. The method can be used for achieving effective appreciating and efficient utilization of the lotus seed shells, namely by-products from processing of lotus seeds, and avoiding waste of resources and environment pollution caused by abandoning or incineration of the lotus seed shells (accounting for 35% of nelumbo nucifera gaertn in mass) in the prior art. The method is simple to implement and low in production cost, and the prepared product is high in purity and yield.

Description

technical field [0001] The invention belongs to the technical fields of development of agricultural and sideline products, functional food additives and nutrition and health care, and in particular relates to a method for preparing dietary fiber from lotus seed shells by microwave-assisted enzymolysis. Background technique [0002] Lotus (Nelumbo nucifera Gaertn) is a perennial aquatic herb and is a special product in my country. Lotus seeds are recognized as a nourishing product suitable for all ages. It is more suitable for middle-aged and elderly people with physical weakness, insomnia, loss of appetite and cancer patients. Hunan is the main production province of lotus seeds. As a by-product of lotus seed processing, lotus seed shells account for about 35% of the mass of lotus shells. As many as 25,000 tons of lotus seed shells are produced every year when processing lotus seeds. The main nutritional components are high in fiber content, followed by Protein, starch, tann...

AI Technical Summary

Problems solved by technology

At present, the research on the effective components of lotus seed shells at home and abroad is still in its infancy, and the research on the dietary fiber of lotus seed shells is rarely involved, and most of them are based on conventional extraction methods, such as chemical reagents / enzymes, and the extraction efficiency is not high.