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Method for preparing methionine microcapsule for marine product feedstuff using spray drying means

A technology of spray drying and aquatic feed, which is applied in the direction of animal feed, animal feed, application, etc., can solve the problems of affecting the economic benefits of shrimp farming, high cost of shrimp feed, and no promotion effect of shrimp growth, so as to reduce feed cost and increase Usage, the effect of reducing usage

Inactive Publication Date: 2008-05-14
JIANGNAN UNIV
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AI Technical Summary

Problems solved by technology

Moreover, the addition of crystalline amino acids in the feed has no effect on promoting the growth of shrimp, so in order to achieve the balance of amino acids in the shrimp feed, it is necessary to use a large amount of imported fish meal with high methionine content.
This results in a higher cost of shrimp feed and affects the economics of shrimp farming

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Add maltodextrin into water, heat to dissolve, then cool, the amount of feed is to control the viscosity of the solution to 150-180mP.s, then add methionine, the weight ratio of methionine to maltodextrin is 0.5:1, and the concentration of solids in the suspension is 400g / L , the spray drying conditions are: air inlet temperature 220-230°C, feed rate 200-220mL / h, nozzle diameter 0.5mm, spray drying.

[0011] The yield of microcapsules was 86%.

Embodiment 2

[0013] Add maltodextrin into water, heat to dissolve, then cool, the amount of feed is to control the viscosity of the solution to 150-180mP.s, and then add methionine, the weight ratio of methionine to maltodextrin is 5:1, and the concentration of solids in the suspension is 100g / L , the spray drying conditions are: air inlet temperature 220-230°C, feed rate 200-220mL / h, nozzle diameter 0.5mm, spray drying.

[0014] The yield of microcapsules was 79%.

Embodiment 3

[0016] Add maltodextrin into water, heat to dissolve, then cool, the amount of feed is to control the viscosity of the solution to 150-180mP.s, then add methionine, the weight ratio of methionine to maltodextrin is 2:1, and the concentration of solids in the suspension is 250g / L , the spray drying conditions are: air inlet temperature 220-230°C, feed rate 200-220mL / h, nozzle diameter 0.5mm, spray drying.

[0017] The yield of microcapsules was 97.6%.

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Abstract

The utility model relates to a method of preparing the methionine micro capsules used in aquatic feed by means of spray drying, which belongs to the technical field of the aquatic feed. The utility model uses the maltodextrin as wall material, uses the methionine as core material, and prepares the methionine micro encapsules products by means of the spray drying. The utility model carries through the micro encapsulation process to the methionine, makes the crystal methionine in the feed released slowly in the intestinal tract of a shrimp, thereby realizes a synchronous absorption of the crystal methionine and the incorporated methionine; the utility model can reduce the usage amount of the fishmeal, increase the usage amount of the vegetable protein material with a lower price, and reduce the feed cost.

Description

technical field [0001] The invention discloses a method for preparing methionine microcapsules for aquatic feed by using a spray drying method, which belongs to the technical field of aquatic feed. Background technique [0002] At present, due to the lack of animal protein resources such as fish meal, cake meal is generally used to replace fish meal in compound feed, resulting in a serious shortage of essential amino acids. Therefore, adding essential amino acids to feed is one of the methods to improve the nutritional value of protein. Research data show that both juvenile and adult shrimp have difficulty utilizing crystalline amino acids in the diet. Moreover, adding crystalline amino acids in the feed has no effect on promoting the growth of shrimp, so in order to make the shrimp feed reach amino acid balance, it is necessary to use a large amount of imported fish meal with higher methionine content. This leads to higher cost of shrimp feed and affects the economic benef...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K1/18A23K1/16A23K20/142A23K50/80
CPCY02A40/818
Inventor 过世东闫征袁信华
Owner JIANGNAN UNIV
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