Production method of white granulated sugar

Abstract

The invention discloses a production method of white granulated sugar. The production method comprises the following steps: (1) selecting fresh sugarcane as a raw material; (2) squeezing the sugarcaneto obtain sugarcane juice; (3) adding L-ascorbic acid into the sugarcane juice and stirring and uniformly mixing; (4) regulating the pH (Potential of Hydrogen) of the sugarcane juice to 5.5 to 6.5; heating to 60 to 65 DEG C and adding a flocculating agent; then sufficiently stirring and carrying out sedimentation treatment to obtain a clarified solution; (5) treating the clarified solution by adopting an ultrafiltration membrane separation system to obtain ultra-filtered juice and regulating the ultra-filtered juice to be neutral by utilizing acid; (6) carrying out electrodialysis on the ultra-filtered juice; then concentrating to obtain a concentrated solution; (7) carrying out strong alkaline anion exchange on the concentrated solution; then carrying out weak acidic cation exchange to desalt; finally, evaporating and concentrating obtained sugar liquid and combining and crystallizing to obtain the white granulated sugar. The production method of the white granulated sugar, providedby the invention, is simple to operate; color value of sugar juice can be reduced, without the need of sulfur smoking, so that the quality requirements on syrup needed for producing the white granulated sugar are met and the high-quality and sulfur-free white granulated sugar is produced.

Description

technical field [0001] The invention relates to the technical field of sugar production, in particular to a production method of white granulated sugar. Background technique [0002] White granulated sugar is a kind of edible sugar. There are many types of edible sugar, which can be divided into raw sugar or coarse sugar, soft white sugar, white granulated sugar, rock sugar, cube sugar, brown granulated sugar, soil brown sugar, etc. White granulated sugar and soft white sugar are commonly known as white sugar. White granulated sugar is the food sugar with the largest consumption in the food and beverage industry and civilian use. Guangxi is the largest white sugar producing province in China. How to produce high-quality white sugar and improve the production technology level in the new era is one of the main directions for the technological development of my country's sugar industry. [0003] The production of white granulated sugar mainly relies on sugarcane as raw materi...

AI Technical Summary

Problems solved by technology

Therefore, we must first strictly monitor the quality of raw cane to ensure its freshness, and avoid the impact of increased production costs and reduced quality of white sugar products due to stale raw cane

[0004] At present, the detection of sugarcane freshness is mainly through sensory inspection by inspectors. The judgment results are highly subjective and there is no unified judgment standard. The detection results cannot accurately explain the real situation of sugarcane freshness, so that the detection effect is not ideal.