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Method for preparing feed protein by mixed fermentation of tilapia leftovers and soybean meals

A mixed fermentation and feed protein technology, which is applied in the field of feed protein preparation, can solve the problems of polluting coastal tidal flats and offshore waters, large steam consumption, and long heating time, so as to save the step of separating fat, improve protein utilization, and reduce The effect of feed costs

Active Publication Date: 2012-07-11
湛江银恒生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above technology of processing tilapia scraps into fishmeal has the following disadvantages: (1) Long heating time, large amount of steam, high drying cost, and long-term high temperature will destroy nutrients
(3) In the process of fishmeal production, waste water that is difficult to treat will be produced, and many manufacturers discharge it directly without treatment, seriously polluting coastal tidal flats and offshore waters
Although some manufacturers adopt the method of heating and evaporating to recover protein in wastewater, due to the large amount of evaporated water, high energy consumption and high cost, this is the main reason why most fishmeal processing enterprises are unwilling to invest in wastewater treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: According to the mass ratio of 1:1, 1000 kg of minced tilapia scraps were mixed with 1000 kg of soybean meal crushed and passed through a 60-mesh sieve, and 200 kg of water were mixed together to obtain The mixed fermentation raw materials; then add 1 kg of Bacillus subtilis, 3 kg of feed yeast, 5 kg of Lactobacillus delbrueckii, 1 kg of protease, 0.1 kg of cellulase, and 0.3 kg of β-glucose to the mixed fermentation materials Carbohydrase, 0.5 kg β-mannan, 0.3 kg lipase, stir and mix evenly, start closed solid state fermentation in the fermentor, the fermentation temperature is controlled in the range of 30 ℃ ~ 50 ℃, and the fermentation raw materials are periodically aerated , Ventilate once every 3h, each aeration time is 10min, no aeration after 30 hours and ensure airtight anaerobic conditions, continue to ferment for 60h, then end the fermentation, after the fermentation, the product obtained after fermentation is dried, crushed, inspected and packaged ,...

Embodiment 2

[0023] Example 2: According to the mass ratio of 1:1, 1000 kg of minced tilapia scraps were mixed with 1000 kg of soybean meal crushed and passed through a 60-mesh sieve, and 200 kg of water were mixed together to obtain Mixed fermentation raw materials; then add 3 kg Bacillus licheniformis, 3 kg Saccharomyces cerevisiae, 5 kg Lactobacillus bulgaricus, 1 kg protease, 0.1 kg cellulase, and 0.3 kg β-glucan to the mixed fermentation materials Enzyme, 0.5 kg β-mannan, 0.3 kg lipase are stirred and mixed uniformly, and the closed solid-state fermentation is started in the fermentor. The fermentation temperature is controlled in the range of 30 ℃ to 50 ℃. The fermentation raw materials are aerated regularly at intervals. Ventilate once every 6 hours, each time for 10 minutes. After 36 hours, no aeration and ensure airtight anaerobic conditions. Continue fermentation for 48 hours and then end the fermentation. After the fermentation, the product obtained after fermentation is dried, cr...

Embodiment 3

[0024] Example 3: According to the mass ratio of 0.8:1, 800 kg of minced tilapia scraps were mixed with 1000 kg of soybean meal crushed and passed through a 60-mesh sieve, and 300 kg of water were mixed together to obtain The mixed fermentation materials; then add 5 kg of Bacillus subtilis, 3 kg of feed yeast, 5 kg of Lactobacillus delbrueckii, 1.5 kg of protease, 0.1 kg of cellulase, and 0.3 kg of β-glucose to the mixed fermentation materials. Carbohydrase, 0.5 kg β-mannan, 0.2 kg lipase, stir and mix evenly, start closed solid-state fermentation in the fermentor, the fermentation temperature is controlled in the range of 30 ℃ ~ 50 ℃, and the fermentation raw materials are periodically aerated Ventilate once every 3h, each aeration time of 10min, no ventilation after 30 hours and ensure airtight anaerobic conditions, continue the fermentation for 60h, then end the fermentation, after the fermentation, the product obtained after fermentation is dried, crushed, inspected and pack...

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PUM

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Abstract

The invention relates to a method for preparing feed protein by mixed fermentation of tilapia leftovers and soybean meals, belonging to the field of feed additive preparation. The method comprises the following steps: mincing fresh tilapia leftovers, mixing the minced tilapia leftovers and crushed soybean meals at 60 meshes, adding water and uniformly mixing, and adding bacteria and enzyme to carry out solid fermentation; and drying and crushing the fermented raw materials to obtain the fermented feed protein. The fermented feed protein powder prepared by the invention is rich in small peptides and probiotics. According to the invention, the protein utilization rate is raised, the growth effect of animal is raised, the survival rate is raised. The fermented feed protein can completely replace fish meal in the feed industry, thus the feed cost is obviously reduced.

Description

Technical field [0001] The invention relates to a method for preparing feed protein, in particular to a method for preparing feed protein mixed and fermented with tilapia leftovers and soybean meal, and belongs to the technical field of feed additive preparation. Background technique [0002] my country is currently the most important tilapia producer in the world. Tilapia processing is mainly pre-processed frozen fish fillets, and this processing method accounts for more than 80%. In the processing of tilapia fillets, a large amount of tilapia scraps are produced, which mainly include minced fish meat, fish skin, fish scales, fish bones, offal, and fish heads, which account for about 65% of the raw fish. At present, there are more than one hundred tilapia processing companies in the country, which produce more than one million tons of tilapia scraps each year. These tilapia scraps are mainly used for the processing of feed protein. [0003] At present, most of tilapia scraps used...

Claims

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Application Information

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IPC IPC(8): A23K1/10A23K1/14
Inventor 洪鹏志杨萍周春霞刘唤明
Owner 湛江银恒生物科技有限公司
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