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Method for extracting high-nutrient lactose from fresh milk

A high-nutrition, lactose technology, applied in the production of sugar, lactose production, sugar production and other directions, can solve the problems of difficult extraction of lactose, loss of high-nutrition lactose, and difficulty in refining, etc., to improve the purity, reduce the processing cost, and improve the extraction rate. high effect

Inactive Publication Date: 2016-05-11
NEW HOPE SHUANGXI DAIRY SUZHOU CO LTD
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Problems solved by technology

[0007] In view of the above technical problems, the present invention proposes a method for extracting high-nutrition lactose from fresh milk, which solves the technical problems that lactose is not easy to extract, and the main high-nutrition lactose is lost and difficult to be refined.

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  • Method for extracting high-nutrient lactose from fresh milk

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Embodiment Construction

[0028] The present invention will be described in further detail below, so that those skilled in the art can implement it with reference to the description.

[0029] It should be understood that terms such as "having", "comprising" and "comprising" used herein do not denote the presence or addition of one or more other elements or combinations thereof.

[0030] In order to achieve the above object, the present invention adopts the following technical solutions: a method for extracting high-nutrition lactose from fresh milk, such as figure 1 shown, including the following steps:

[0031] Step 1) The fresh milk is centrifuged for the first time on a centrifuge to remove the upper layer of fat to obtain skim milk. The speed of the first centrifugation is 4000r / min-5500r / min. In this embodiment, the centrifuge The rotating speed is 4500r / min, centrifuged for 15 minutes, and after standing for a period of time, the fat in the milk is at the top layer, and the upper layer fat is ex...

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Abstract

The invention discloses a method for extracting high-nutrient lactose from fresh milk, which comprises the following steps: 1) carrying out primary centrifugal operation on fresh milk to obtain skimmed milk; 2) carrying out microfiltration and secondary centrifugal operation to obtain milk serum, and carrying out ultrafiltration to obtain a first filtrate which passes through a first ultrafiltration membrane; 3) adding a chitosan-acetic acid solution into the first filtrate, and carrying out secondary ultrafiltration to obtain a second filtrate; 4) dropwisely adding the second filtrate into a 0.1-5 wt% sodium hydroxide solution, carrying out pressure filtration to obtain a first retention substance on the filter screen, dissolving the first retention substance in a 0.08-1.6 wt% hydrochloric acid solution, and carrying out nanofiltration to obtain a fourth filtrate; and 5) adding calcium chloride into the fourth filtrate solution, carrying out nanofiltration to obtain a fifth filtrate, and carrying out spray drying on the fifth filtrate solution to obtain lactose powder. The method solves the technical problem of difficulty in extraction due to the loss of the high-nutrient lactose.

Description

technical field [0001] The invention belongs to the technical field of dairy product production, in particular to a method for extracting high-nutrition lactose from fresh milk. Background technique [0002] Whey products belong to the category of dairy products and are by-products of cheese production. About 1 kg of cheese can be produced with 10 kg of fresh milk, and the rest is whey. Fresh whey has about 7% dry matter but contains nearly half the nutrients of fresh milk. In the production process of cheese, most of the fat of milk and casein, which accounts for 80% of the total protein, form the basic framework of cheese curd, while whey is a component other than cheese curd. Most of the nutrients contained in whey are soluble, such as whey protein. Phospholipids, Lactose. minerals and vitamins etc. [0003] Fresh whey is pasteurized and then dried into powder, which is whey powder. The ratio of other ingredients in whey powder except water should be consistent with ...

Claims

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Application Information

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IPC IPC(8): C13K5/00
CPCC13K5/00
Inventor 王铁军史寒琴惠建明
Owner NEW HOPE SHUANGXI DAIRY SUZHOU CO LTD
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