Fruit clear juice filtering process

Abstract

The invention relates to a fruit clear juice filtering process. Fruit juice after enzymolysis is filtered by a vacuum drum filter, and a filtering medium in the vacuum drum filter is kieselguhr which can filter particles with the size being higher than 0.1micron. Compared with the prior art, the fruit clear juice filtering process has the advantages that the quality of clear juice is improved; the clear juice is clear, rich in color, and better in mouthfeel; because the drum filter is low in rotation speed, the fruit clear juice filtering process is low in power consumption; the filtering medium of the vacuum rotary drum filter is continuously regenerated without machine halt, so that the continuous production improves the productivity.

Description

technical field [0001] The invention relates to a filtering process, in particular to a filtering process for clear fruit juice. Background technique [0002] The most critical part of the production process of traditional fruit juice (typically such as apple juice) is to ultrafilter the enzymatically hydrolyzed apple juice through an ultrafiltration membrane to make the particle diameter smaller than the pore size (usually 0.005-0.02 microns) Particles pass through, and larger particles are intercepted, so as to obtain clear and transparent juice. [0003] The clear juice obtained by this method has filtered out most of the large particles, and these large particles are usually the essence of the fruit juice, containing most of the nutrients and aromatic substances, so that the clear juice often lacks color and is better. taste; moreover, because it must be pressurized to pass through the ultrafiltration membrane, a large flow circulation pump is usually used to make the m...

AI Technical Summary

Problems solved by technology

[0003] The clear juice obtained by this method has filtered out most of the large particles, and these large particles are usually the essence of the fruit juice, containing most of the nutrients and aromatic substances, so that the clear juice often lacks color and is better. taste; moreover, because it must be pressurized to pass through the ultrafiltration membrane, a large flow circulation pump is usually used to make the material circulate excessively, thereby realizing the ultrafiltration process, which consumes a lot of energy; when the filtered material is too viscous, It must be stopped for cleaning, about once every 8-10 hours, each time takes 2-3 hours, the entire production line must be stopped, reducing production efficiency