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Concentrate lactose solution and preparation method thereof

A lactose liquid, lactose technology, applied in the preparation of sugar derivatives, chemical instruments and methods, disaccharides and other directions, can solve the problems of low yield, high cost, low purity, etc., and achieve low salt, low cost and high purity. Effect

Pending Publication Date: 2020-05-29
INNER MONGOLIA YILI INDUSTRIAL GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One purpose of the present invention is to provide a new refined lactose production method with high purity, high yield and low cost for the defects of low purity, low yield and high cost in the existing lactose production technology

Method used

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  • Concentrate lactose solution and preparation method thereof
  • Concentrate lactose solution and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Example 1 (Preparation of concentrated refined lactose liquid from milk)

[0048] (1) Preparation of skimmed milk: the raw milk is preheated to 50°C, and then separated into skimmed milk and cream with a speed of 5000 rpm through a centrifuge. The skim milk has a fat content of 0.1%. The skimmed milk is pasteurized at 75°C / 15s.

[0049] (2) Preparation of lactose liquid: ultrafiltration of skimmed milk to separate lactose liquid. The ultrafiltration membrane adopts a hollow roll membrane (Drummel roll ultrafiltration membrane DUFE-4040S), and the ultrafiltration membrane has a molecular weight cut-off of 5000 Da. The skimmed milk is ultrafiltered to separate the concentrated milk protein liquid and the lactose liquid, and the total dry matter of the lactose liquid is 6.0%. When skimmed milk enters the membrane at a temperature of 8°C, a pressure of 2.0bar, and a flow rate of 3000L / H, the ultrafiltration membrane flux drops to 10% of the initial membrane flux to stop ultraf...

Embodiment 2

[0058] Example 2 (Preparation of refined lactose liquid from milk)

[0059] (1) Preparation of skimmed milk: the raw milk is preheated to 55°C, and then separated into skimmed milk and cream by a centrifuge at a speed of 5600rpm. The fat content of skimmed milk is 0.05%. The skimmed milk is pasteurized at 70°C 15s.

[0060] (2) Preparation of lactose liquid: skimmed milk ultrafiltration to separate lactose liquid, the ultrafiltration membrane adopts flat membrane (Fometech flat ultrafiltration membrane FMDU-004), and the ultrafiltration membrane has a molecular weight cut-off of 10000Da. The skimmed milk is ultrafiltered to separate the concentrated milk protein liquid and the lactose liquid, and the total dry matter of the lactose liquid is 5.5%. When skimmed milk enters the membrane at a temperature of 10°C, a pressure of 2.5bar, and a flow rate of 3500L / H, the ultrafiltration membrane flux drops to 10% of the initial membrane flux to stop ultrafiltration.

[0061] (3) Concentrat...

Embodiment 3

[0069] Example 3 (Preparation of refined lactose liquid from milk)

[0070] (1) Preparation of skimmed milk: the raw milk is preheated to 60°C, and then separated into skimmed milk and cream by a centrifugal separator at 6000 rpm. The fat content of skimmed milk is 0.03%. The skimmed milk is pasteurized at 72°C / 15s.

[0071] (2) Preparation of lactose liquid: skimmed milk ultrafiltration separates lactose liquid, the ultrafiltration membrane adopts tubular membrane (Qunli innovative T-CUT MBR tubular ultrafiltration membrane), and the ultrafiltration membrane has a molecular weight cut-off of 8000Da. The skimmed milk is ultrafiltered to separate the concentrated milk protein liquid and the lactose liquid, and the total dry matter of the lactose liquid is 6.0%. When skimmed milk enters the membrane at a temperature of 9.0°C, a pressure of 4.0bar, and a flow rate of 4000L / H, the ultrafiltration membrane flux drops to 10% of the initial membrane flux to stop ultrafiltration.

[0072]...

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Abstract

The invention provides a method for preparing a lactose solution. The method for preparing the lactose solution comprises the following steps: preparing skim milk; carrying out ultra-filtration; carrying out nano-filtration; carrying out primary ion exchange; carrying out electrodialysis; carrying out secondary ion exchange; and carrying out activated carbon decolorization. The method for preparing the lactose solution can be used for producing the lactose solution; and the produced lactose solution can be processed into lactose powder.

Description

Technical field [0001] The invention relates to a method for separating and extracting lactose from milk, and a refined and concentrated lactose liquid prepared by the method. Background technique [0002] Lactose is the main carbohydrate in the milk of most mammals. Lactose is widely used in food production and pharmaceutical fields. At present, the traditional methods of industrial production of lactose mainly adopt the crystallization method, the co-precipitate formed by lactose and calcium chloride (lactose powder purity 94%), and the organic solvent precipitation method. These traditional methods separate and purify lactose to prepare refined lactose powder, with low lactose purity, low yield and high cost. [0003] CN 103804433 A discloses a method for refining lactose, which adopts ultrafiltration and recrystallization to remove residual protein and other colored impurities in the lactose liquid, and the prepared lactose meets the requirements for injection. In the method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H3/04C07H1/08
CPCC07H3/04C07H1/08
Inventor 李伟
Owner INNER MONGOLIA YILI INDUSTRIAL GROUP CO LTD
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