Method for producing fish meal and fish oil with tilapia leftovers

A technology of leftovers and tilapia, applied in application, animal feed, animal feed, etc., can solve the problems of not meeting the requirements of fish meal raw materials, salt poisoning of farmed animals, and occurrence of peculiar smell, so as to increase the economic benefits of enterprises and reduce Fat content, effect of increasing added value

Inactive Publication Date: 2008-02-27
GUANGDONG HENGXING GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the use of tilapia leftovers is limited to simple processing such as processing dried fish powder, that is, the dried and pulverized product of the leftover raw materials, which contains 45% to 55% of crude protein and high oil content. It is prone to rancidity and odor during storage, and affects the digestion and utilization of other nutrients; or it is prepared by using salted ra

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: Rinse 1000kg of tilapia leftovers and put them into a continuous cooking machine. The material temperature at the feed inlet section is 50°C, the middle section is 80°C, the outlet temperature is 90°C, and the water vapor gauge pressure is 6kg / cm 2 , cooking time 15 minutes. The steamed raw materials enter the screw press, and the pressing time is 15 minutes. The pressed solids then enter the tube-sheet dryer. With hot air as the drying medium, the water vapor temperature is 100°C, and the moisture content of the fishmeal product is 10.8% after drying for 1.5 hours. The dried fish meal is crushed with a pulverizer, and then passed through a 2.8mm sieve to remove the sieve. The sieved fish meal is packed in double-layer woven bags, 50kg / bag. After testing, the fish meal contains 58.8% crude protein, 8.2% crude fat, 18.2% crude ash, 0.8% salt, 4.2% lysine, and 1.6% methionine, reaching the first-class domestic whole fish meal standard.

[0021] The squee...

Embodiment 2

[0022] Embodiment 2: Rinse 2000kg of tilapia leftovers and put them into a continuous cooking machine. The temperature of the material at the inlet section is 55°C, the middle section is 85°C, the temperature at the outlet is 95°C, and the water vapor gauge pressure is 64kg / cm 2 , cooking time 20 minutes. The steamed raw materials enter the screw press, and the pressing time is 15 minutes. The pressed solids then enter the tube-sheet dryer. With hot air as the drying medium, the water vapor temperature is 105°C, and the moisture content of the fishmeal product is 10.2% after drying for 2 hours. The dried fish meal is crushed with a pulverizer, and then passed through a 2.8mm sieve to remove the sieve. After testing, the fish meal contains 60.2% crude protein, 7.8% crude fat, 19.0% crude ash, 0.8% salt, 4.3% lysine, and 1.6% methionine, reaching the first-class domestic whole fish meal standard.

[0023] The squeezed liquid obtained during the fishmeal pressing process enter...

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PUM

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Abstract

The invention provides a fish meal and fish oil based on leftover bits and pieces of Tilapia mossambica and making method in preparing field of animal fodder raw material. The making method of fish meal comprises the following steps: choosing leftover bits and pieces of Tilapia mossambica as raw material; producing fish meal after boiling, pressing, drying, disintegrating, sizing and packaging. The making method of fish oil comprises the following steps: doing solid-liquid separation of pressing liquid through pressing step; centrifuging the liquid at high-speed to get upper layer oily substance being fish oil; thickening sub-layer fish dissolving pulp to return fish meal to improve yield rate. The invention processes leftover bits and pieces of Tilapia mossambica to be high grade fish meal and fish oil in changing waste into treasure way with totally-enclosed during the whole process and improves yield rate and prevents polluting environment through waste gas retracting device at the same time, which achieves one level domestic fish meal request in every index of quality belonging an environment-friendly product with fine quality that substitutes domestic fish meal absolutely.

Description

【Technical field】 [0001] The invention relates to a preparation method of fish meal and fish oil, which belongs to the field of preparation of animal feed raw materials. 【Background technique】 [0002] The shortage of fishmeal resources is a major problem that plagues the development of my country's aquatic feed industry. The protein source of aquatic feed mainly comes from fishmeal, while my country's self-produced fishmeal is less than 100,000 tons per year, and a large amount of fishmeal is imported. In recent years, my country's annual fishmeal imports have risen sharply. In 2004, 1.12 million tons of fishmeal was imported, accounting for 1 / 5 of the world's total fishmeal production. The actual use of fishmeal in aquafeeds accounted for nearly 50% of the global aquafeed fishmeal consumption. Affected by the decline of global fishery natural resources, the world's fish meal production has been declining year by year, and the price has continued to rise. Since 2000, the p...

Claims

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Application Information

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IPC IPC(8): A23K1/10A23K10/22
Inventor 陈丹陈四黄智诚林尤汉陈允梁海鸥陈永林得文黎爱埠
Owner GUANGDONG HENGXING GROUP
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