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Method for preparing special pre-gelatinized starch for aquatic product feed

A technology for pregelatinizing starch and aquatic feed, applied in animal feed, animal feed, application and other directions, can solve the problems of large drying energy consumption, high production cost, high breeding cost, and achieve reduced breeding cost, low production cost, dryness The effect of low energy consumption

Inactive Publication Date: 2015-07-22
FANGCHENGGANG YAMEIHAO FEED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Throughout these production technologies and the pregelatinized starch products produced, there is a problem of insufficient yellowing and transparency of the product. The yellowing and opacity of pregelatinized starch will affect the eating of aquatic products, thereby affecting the efficiency of feed, resulting in high breeding costs.
In addition, the biggest disadvantage of using a double-drum pregelatinizer to produce pregelatinized starch is that the drying energy consumption is high and the production cost is high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] First clean it with the mixing tank, then put 2 tons of Peninsula brand raw starch and 1 ton of Rongxing brand raw starch into the mixing tank, and add 450 kg of purified deionized water at the same time, and the conductivity of the deionized water is required ≦10mu, while stirring to form a wet starch mixture; then add 3 kg of sodium carbonate and stir for another 10 minutes. Then use the extrusion expansion technology to extrude the starch mixture into the double-screw extruder, heat and pressurize to denature the starch, extrude it through the 0.1mm fine hole, and carry out pre-gelatinization and drying treatment; in this step, pressurize to (7 ~8) X10 5 Pa, heated to a temperature of 125-140°C. After pregelatinization and drying treatment, a white, transparent and strip-shaped product can be obtained, and the pregelatinized starch specially used for aquatic feed can be obtained after crushing.

Embodiment 2

[0019] First clean it with the mixing tank, then put 2 tons of Peninsula brand raw starch and 1 ton of Rongxing brand raw starch into the mixing tank, and add 600 kg of purified deionized water at the same time, and the conductivity of the deionized water is required ≦10mu, while stirring to form a wet starch mixture; then add 3 kg of sodium chloride and stir for another 10 minutes. Then use the extrusion expansion technology to extrude the starch mixture into the double-screw extruder, heat and pressurize to denature the starch, extrude it through the 0.8mm fine hole, and perform pregelatinization and drying treatment; in this step, pressurize to (7 ~8) X10 5 Pa, heated to a temperature of 125-140°C. After pregelatinization and drying treatment, a white, transparent and strip-shaped product can be obtained, and the pregelatinized starch specially used for aquatic feed can be obtained after crushing.

Embodiment 3

[0021] First clean it with the mixing tank, then put 2 tons of Peninsula brand raw starch and 1 ton of Rongxing brand raw starch into the mixing tank, and add 500 kg of purified deionized water at the same time, and the conductivity of the deionized water is required ≦10mu, while stirring to form a wet starch mixture; then add 3 kg of sodium hydroxide and stir for another 10 minutes. Then use the extrusion expansion technology to extrude the starch mixture into the double-screw extruder, heat and pressurize to denature the starch, extrude it through the 0.6mm fine hole, and perform pregelatinization and drying treatment; in this step, pressurize to (7 ~8) X10 5 Pa, heated to a temperature of 125-140°C. After pre-gelatinization and drying treatment, the white transparent strip-shaped product is obtained. After crushing, it is dried by pipeline air-flow drying technology to obtain pre-gelatinized starch for aquatic feed with stable water content.

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Abstract

The invention discloses a method for preparing special pre-gelatinized starch for an aquatic product feed. The pre-gelatinized starch is prepared through adding chemical additives into native starch, which serves as a raw material, and is prepared through the following specific steps: (1) adding purified de-ionized water into the native starch, and stirring so as to prepare a moist starch mixture; (2) adding the chemical additives into the starch mixture, and stirring for 10 minutes; (3) feeding the mixture to a bulking machine for pre-gelatinization, drying so as to obtain white, transparent and strip-shaped products, and then, crushing, thereby obtaining special pre-gelatinized starch for the aquatic product feed. According to the method, the prepared pre-gelatinized starch is white and transparent, so that the feed utilization of aquatic products can be increased, the efficiency of the feed is increased, and the culture cost is reduced.

Description

technical field [0001] The invention relates to a preparation method of a feed additive, in particular to a preparation method of special pregelatinized starch for aquatic feed. Background technique [0002] In the process of aquatic product cultivation, in order to reduce the loss rate of feed in water, improve stability and efficiency, and reduce water pollution, it is often necessary to add feed additives such as pregelatinized starch to the feed. my country began to produce pregelatinized starch in the 1980s, but due to various reasons such as raw materials, equipment and technology used in production, the quality and output of pregelatinized starch produced have not been ideal. In recent years, with the development of special aquaculture industry, the production of pregelatinized starch has been significantly improved in both output and quality, especially the technical level of producing pregelatinized starch from cassava has unprecedented development. Looking at thes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K1/14A23K1/18C08B30/12
Inventor 钟建为
Owner FANGCHENGGANG YAMEIHAO FEED