阅读说明：本技术 一种基于南极磷虾的仔猪饲料添加剂的制备方法 (Preparation method of piglet feed additive based on euphausia superba ) 是由 欧阳小琨 卢雨清 杨立业 范丽红 于 2019-09-12 设计创作，主要内容包括：本发明涉及饲料添加剂技术领域,公开了一种基于南极磷虾的仔猪饲料添加剂的制备方法。包括以下步骤：1)将南极磷虾肉洗净后绞碎得肉糜；2)将肉糜浸入乙酸乙酯浸泡脱脂,静置,过滤分离出肉糜；3)将步骤2)中肉糜加入水中均匀分散,加入去氟复合颗粒,过滤分离出肉糜；4)将步骤3)中肉糜烘干,研磨成粉,即得。)本发明利用膨润土的吸附作用先将氟离子进行吸附,然后利用膨润土层中的镧离子对氟进行固定,防止氟离子的脱吸附,得到的磷虾蛋白含氟率较低。(The invention relates to the technical field of feed additives, and discloses a preparation method of a piglet feed additive based on euphausia superba. The method comprises the following steps: 1) cleaning Euphausia superba meat, and mincing to obtain meat paste; 2) immersing the meat paste into ethyl acetate for soaking and degreasing, standing, and filtering to separate out the meat paste; 3) adding the meat paste obtained in the step 2) into water for uniform dispersion, adding defluorinated composite particles, and filtering to separate out the meat paste; 4) drying the meat paste in the step 3), and grinding into powder to obtain the meat paste. ) According to the method, fluorine ions are firstly adsorbed by utilizing the adsorption effect of bentonite, and then the lanthanum ions in the bentonite layer are used for fixing the fluorine, so that the desorption of the fluorine ions is prevented, and the fluorine content of the obtained krill protein is low.)

1. A preparation method of a piglet feed additive based on antarctic krill is characterized by comprising the following steps:

1) cleaning Euphausia superba meat, and mincing to obtain meat paste;

2) immersing the meat paste into ethyl acetate for soaking and degreasing, standing, and filtering to separate out the meat paste;

3) adding the meat paste obtained in the step 2) into water for uniform dispersion, adding defluorinated composite particles, and filtering to separate out the meat paste;

4) drying the meat paste in the step 3), and grinding into powder to obtain the meat paste.

2. The preparation method of the piglet feed additive based on Euphausia superba according to claim 1, wherein the mass-to-volume ratio of meat emulsion to ethyl acetate in step 2) is 5-10g/150 mL.

3. The preparation method of the piglet feed additive based on Euphausia superba according to claim 1, wherein the mass-to-volume ratio of meat emulsion to water in step 3) is 2-3g/100 mL.

4. The preparation method of the piglet feed additive based on Antarctic krill according to claim 1, wherein the mass ratio of the meat emulsion to the defluorinated composite particles in the step 3) is 1: 0.1-0.2.

5. The preparation method of the piglet feed additive based on Antarctic krill according to claim 1, wherein the preparation method of the defluorinated composite particle comprises the following steps:

adding carboxymethyl chitosan into water to prepare 1-5wt% carboxymethyl chitosan water solution; adding bentonite into carboxymethyl chitosan aqueous solution, ultrasonically stirring for 4-8h, filtering to separate out bentonite, adding bentonite into sodium trimetaphosphate aqueous solution, soaking for 1-3h, filtering, separating, and drying to obtain modified bentonite; adding the modified bentonite into an ethanol solution of lanthanum nitrate, stirring for reacting for 2-5h, filtering, washing and drying to obtain the modified bentonite.

6. The preparation method of the piglet feed additive based on Antarctic krill according to claim 5, wherein the mass volume ratio of the bentonite to the carboxymethyl chitosan aqueous solution is 1-3g/80 mL.

7. The preparation method of the antarctic krill-based piglet feed additive according to claim 5, wherein the mass concentration of the sodium trimetaphosphate aqueous solution is 3-6%.

Technical Field

The invention relates to the technical field of feed additives, in particular to a preparation method of a piglet feed additive based on antarctic krill.

Background

The piglet grows and develops fast, the metabolic function is vigorous, especially, the protein, phosphorus and calcium metabolism is much higher than that of an adult pig, the breast milk can not meet the nutritional requirement of the piglet after 2 weeks, so the piglet needs to be fed in time to make up the deficiency of the nutrition, and meanwhile, as the piglet is not developed in digestive organs and small in volume and incomplete in function when being born, the digestive organs and the functions of the piglet can be exercised by the feeding attractant, the adaptation period of the feed for the transition to the adult pig is shortened, and a foundation is laid for safe weaning. The high protein and high energy feed for the piglets can ensure the healthy growth of the piglets. Antarctic krill is a high protein food with superior protein content. According to the determination of biologists, the protein content of the Antarctic krill meat is 17.56%, and compared with tuna, tiger shrimp and beef, the lysine content of the Antarctic krill is the highest. The antarctic krill powder can be used as a nutritional additive of a piglet feed, and a piglet starter feed prepared by adding the antarctic krill follows the digestion physiological characteristics of piglets and meets various nutritional components required by the growth and development stages of the piglets. However, the high fluorine content in the antarctic krill is accumulated after entering the bodies of the piglets, the health of human bodies is influenced, and the low-fluorine antarctic krill powder is obtained by removing fluorine from the antarctic krill powder by using the fluorine-removing anion resin and is used as the piglet starter feed additive. Chinese patent publication No. CN106798073 discloses a method for extracting protein from antarctic krill, which takes antarctic krill as a raw material, utilizes endogenous protease of the antarctic krill to carry out staged autolysis at different temperatures, so that different endogenous proteases can carry out the best effect to decompose the protein in the antarctic krill to the maximum extent, but because the content of fluorine in the antarctic krill is high, the extracted antarctic krill protein used as a pig feed additive can cause harm to the health of pigs.

Disclosure of Invention

The invention aims to overcome the technical problems and provides a preparation method of a porkling plastic additive based on antarctic krill.

In order to achieve the purpose, the invention adopts the following technical scheme: a preparation method of a piglet feed additive based on antarctic krill comprises the following steps:

1) cleaning Euphausia superba meat, and mincing to obtain meat paste;

2) immersing the meat paste into ethyl acetate for soaking and degreasing, standing, and filtering to separate out the meat paste;

3) adding the meat paste obtained in the step 2) into water for uniform dispersion, adding defluorinated composite particles, and filtering to separate out the meat paste;

4) drying the meat paste in the step 3), and grinding into powder to obtain the meat paste.

According to the invention, Antarctic krill is used as a raw material, the Antarctic krill is minced into meat paste and then soaked in ethyl acetate to remove fat molecules in the Antarctic krill, then the degreased meat paste is subjected to adsorption defluorination by using defluorination composite particles, and finally the meat paste is dried and ground into powder to prepare the feed additive. The low-fluorine additive is obtained by carrying out defluorination treatment on the piglet feed additive, is green and environment-friendly, and does not influence the healthy growth of piglets.

Preferably, the mass-to-volume ratio of the meat emulsion to water is 2-3g/100 mL.

Preferably, the mass ratio of the meat emulsion to the defluorinated composite particles in the step 3) is 1: 0.1-0.2.

Preferably, the preparation method of the defluorinated composite particle comprises the following steps:

adding carboxymethyl chitosan into water to prepare 1-5wt% carboxymethyl chitosan water solution; adding bentonite into carboxymethyl chitosan aqueous solution, ultrasonically stirring for 4-8h, filtering to separate out bentonite, adding bentonite into sodium trimetaphosphate aqueous solution, soaking for 1-3h, filtering, separating, and drying to obtain modified bentonite; adding the modified bentonite into an ethanol solution of lanthanum nitrate, stirring for reacting for 2-5h, filtering, washing and drying to obtain the modified bentonite.

According to the method, fluorine ions are firstly adsorbed by utilizing the adsorption effect of bentonite, and then the lanthanum ions in the bentonite layer are used for fixing the fluorine, so that the desorption of the fluorine ions is prevented, and the fluorine content of the obtained krill protein is low. The preparation method of the defluorination composite particle comprises the steps of firstly immersing bentonite into an aqueous solution of carboxymethyl chitosan, dispersing carboxymethyl chitosan molecules in a layered structure of the bentonite through ultrasonic oscillation, adding a cross-linking agent, enabling the carboxymethyl chitosan molecules in a bentonite interlayer to be cross-linked through a suspension polymerization method to form a three-dimensional network polymer, adding the three-dimensional network polymer into an ethanol solution of lanthanum nitrate, combining active sites on the three-dimensional network polymer with lanthanum ions in the lanthanum nitrate, and thus fixing and dispersing the lanthanum ions in the three-dimensional network polymer, wherein the three-dimensional network polymer can increase the dispersion uniformity of the lanthanum ions among the bentonite, and further improve the fixation effect of the lanthanum on the fluoride ions.

Preferably, the mass-volume ratio of the bentonite to the carboxymethyl chitosan is 1-3g/80 mL.

Preferably, the mass concentration of the sodium trimetaphosphate aqueous solution is 3-6%.

Therefore, the invention has the following beneficial effects: (1) the low-fluorine additive is obtained by carrying out defluorination treatment on the piglet feed additive, is green and environment-friendly, and does not influence the healthy growth of piglets; (2) according to the method, fluorine ions are firstly adsorbed by utilizing the adsorption effect of bentonite, and then the lanthanum ions in the bentonite layer are used for fixing the fluorine, so that the desorption of the fluorine ions is prevented, and the fluorine content of the obtained krill protein is low.

Detailed Description

The technical solution of the present invention is further illustrated by the following specific examples.

In the present invention, unless otherwise specified, all the raw materials and equipment used are commercially available or commonly used in the art, and the methods in the examples are conventional in the art unless otherwise specified.