Method for producing water-grinding glutinous rice flour

Abstract

The invention relates to a method for smashing glutinous rice, in particular to application of the smashing-screening coupling technology in the water-grinding glutinous rice flour production technology. The method for producing water-grinding glutinous rice flour comprises the steps that ash and impurities in rice are removed through a pretreatment process; coarse grinding is conducted on the soaked glutinous rice through a grinder and primary screening is conducted by a vibrating screen classifier; glutinous rice husks in glutinous rice milk are removed and 50-80-mesh milk is obtained; refined grinding is conducted through an ultra-fine grinder, secondary screening is conducted through the vibrating screen classifier, and ground glutinous rice milk particles are all over 100 meshes; the glutinous rice milk is dehydrated and dried and the finished product is obtained. The screening process is adopted for twice through the grinding technology and the method has the advantages that the technology is simple, cost is low, the prepared water-grinding glutinous rice flour is high in purity, low in impurity contents of fat, ash and the like, small in number of spots, high in whiteness and fineness and long in expiration date the mean grain size is in narrow distribution, the energy consumption is low, the production capacity is large and the like.

Description

technical field [0001] The invention relates to a glutinous rice crushing method, in particular to the application of "crushing-sieving coupling technology" in the production process of water-milled glutinous rice flour. Background technique [0002] Water-milled glutinous rice flour is an emerging milling industry. It is widely used in food industry, cold drink industry, folk and restaurant making Lantern Festival, etc. It is very popular among consumers and has developed greatly in recent years. Rice flour made from glutinous rice is more suitable for making frozen foods than other grains. Water-milled glutinous rice flour does not form gluten like flour and has gluten strength. Its water absorption and water retention are poor. Glutinous rice starch is almost entirely amylopectin, which has weak retrogradation and good freeze-thaw stability. At present, the research on glutinous rice flour mainly focuses on the research on the production process of water-milled glutinous...

AI Technical Summary

Problems solved by technology

The commonly used grinding wheel is prone to different degrees of wear during grinding, which will not only cause damage to the grooves of the later grinding discs, but also cause the phenomenon of sticky teeth in water-milled glutinous rice flour products, and the resulting friction wear, crushing wear and clogging adhesion , Surface or sub-surface cracks will be generated during the working process of the grinding wheel. On the one hand, the shedding abrasive particles will enter the material at the same time and affect the quality of the final product. On the other hand, the material entering the cracks is easy to breed microorganisms.

Some researchers have applied coating materials with high hardness and high wear resistance to superhard abrasives in grinding wheel grinding, but they cannot fundamentally solve the potential problems caused by grinding wheel wear.

[0004] The secondary grinding process is adopted, that is, grinding wheel mill (primary grinding) + colloid mill or needle mill (finishing), to achieve the best fineness. Before the slurry after water grinding enters the thick slurry tank, a screening process should be designed, generally adopt 80~110 mesh sieve, the material on the sieve is milled and re-milled to ensure its fineness, the thick slurry under the sieve enters the thick slurry tank and stirred evenly, this method improves the fineness of the one-step grinding wheel grinding method, and can filter Some impurities will be removed, but some small sand and stones will still fall off from the grinding wheel and enter the feed liquid, which may affect the damage of the grinding disc groove in the later stage and shorten the service life; and the quality of the final product cannot be fully and reliably guaranteed , glutinous rice flour still has the risk of tooth decay

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