Double-screw extruder for preparing textured fiber protein

Abstract

The invention discloses a double-screw extruder, which comprises a shell and double screws which are arranged in the shell in parallel in the same direction, wherein a preheating region, a hydration region, a curing region and a filament forming region are arranged in the advance direction of the screws in sequence; the screws in the preheating region are single-end equidistant coarse pitch thread groups; the screws in the hydration region are single-end equidistant second largest pitch thread groups; the screws in the curing region are single-end equidistant second smallest pitch thread groups; the screws in the filament forming region are single-end equidistant small pitch thread groups; the coarse pitch thread groups, the second largest pitch thread groups, the second smallest pitch thread groups and the small pitch thread groups are arranged in sequence according to the pitch sizes of the thread groups of the thread groups; supercharging regions are arranged on the screws at the hydration region and the curing region; and the length-diameter ratio of the screws is 22-28. The invention further provides the double-screw extruder for fully opening and curing soybean meal protein molecules to generate a structure with muscle fibers.

Description

technical field [0001] The invention relates to the field of food processing, in particular to a twin-screw extruder for preparing soybean silk protein. Background technique [0002] In the prior art, twin-screw extruders are mainly used to produce soybean textured protein or drawn protein. Socketed splined mandrel connections are combined to achieve a certain compression ratio, and the low-temperature soybean meal is rapidly sheared and hydrated under high temperature and high pressure to complete the opening and recombination of protein molecular chains and produce soybean protein products with organizational structure. That is, soy textured protein or silk protein. [0003] For example, the Chinese patent document CN102058011A discloses a screw structure of a twin-screw extruder for preparing drawn protein from high-temperature defatted meal. Conveying zone, melting zone and metering and homogenizing zone are three functional zones. The conveying zone that ensures the m...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the screw structure of the prior art does not refine the processing process of soybean meal, so the protein molecules of soybean meal cannot be fully opened and matured, and then most of the protein molecules still exist in the form of tissue structure. There is no silk, and the prepared protein has too much beany smell, and then provides a twin-screw extruder that can fully open and mature the protein molecules of soybean meal, and produce a muscle fiber state with good tenacity, elasticity and chewiness. Exit

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