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Zero-lactose full milk powder and preparation method thereof

A technology of whole milk powder and zero lactose, applied in dairy products, milk preparations, other dairy products, etc.

Pending Publication Date: 2021-11-12
河北德玉泉乳业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lactose-free whole milk powder products have not yet appeared in the domestic market

Method used

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  • Zero-lactose full milk powder and preparation method thereof
  • Zero-lactose full milk powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: long-term hydrolysis at low temperature

[0022] A preparation method of zero-lactose whole milk powder, comprising the following steps:

[0023] 1.1) The raw milk has passed the inspection and is collected into the milk storage tank, and the temperature is maintained at 6°C;

[0024] 1.2) Add β-galactosidase to raw milk, the addition amount is 0.05%, 0.08%, 0.10%, stir evenly; and carry out hydrolysis at 6°C;

[0025] 1.3) Re-sampling and testing require that the lactose hydrolysis rate is above 98% and the residual lactose content is below 0.06%, to obtain lactose-free whole milk;

[0026] 1.4) The obtained lactose-free whole milk is subjected to fat separation and powder milling to obtain lactose-free whole milk powder; and sampling and testing are carried out to meet the national standard zero-lactose requirement.

[0027] like figure 1 As shown, the lactose detection results of the whole milk powder prepared by the preparation method of Example 1: ...

Embodiment 2

[0028] Embodiment 2: high temperature short time hydrolysis

[0029] A preparation method of zero-lactose whole milk powder, comprising the following steps:

[0030] 2.1) After passing the inspection, the raw milk is put into the milk storage tank, and the temperature is maintained at 6°C;

[0031] 2.2) Raw milk is pasteurized at 65°C to 85°C / 15 seconds, then cooled to 40°C;

[0032] 2.3) Add β-galactosidase to the raw milk, respectively, in the amounts of 0.01%, 0.05%, and 0.10%, stir evenly, and perform hydrolysis at 40°C;

[0033] 2.4) Re-sampling and testing, it is required that the lactose hydrolysis rate is above 98%, and the lactose residue is below 0.06%, to obtain lactose-free whole milk;

[0034] 2.5) The obtained lactose-free whole milk is subjected to fat separation and powder milling to obtain lactose-free whole milk powder; and sample testing is carried out to meet the national standard zero-lactose requirement.

[0035] like figure 2 As shown, the lactose d...

Embodiment 3

[0036] Embodiment 3: making whole milk powder

[0037] Process flow: raw milk inspection→pretreatment→preheating homogenization and sterilization→lactose hydrolysis→concentration→spray drying→cooling→powder sieving→packaging→finished product

[0038] 3.1) Raw milk inspection and pretreatment: Raw milk must be fresh, not mixed with abnormal milk, with a specific gravity of 1.028-1.032 (20°C), acidity not exceeding 20°T, fat content of not less than 3.1%, and milk solids not low 11.5%; the number of miscellaneous bacteria does not exceed 200,000 / ml; qualified milk must be filtered and purified to obtain raw milk;

[0039] 3.2) Preheating and homogenizing sterilization: the purpose is to kill microorganisms in raw milk and destroy enzyme activity; generally adopt high-temperature short-time sterilization method, or ultra-high temperature instantaneous sterilization method; if using sheet or tube type sterilizer, usually use The best sterilization conditions are 80-85°C for 30 se...

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Abstract

The invention provides zero-lactose full milk powder and a preparation method thereof. The preparation method comprises the following steps: adding raw milk, which is qualified through inspection and has the temperature of 4 DEG C to 8 DEG C, and lactase, of which the weight is 0.05%-0.1% the total weight of the raw milk, in a mixing process, carrying out uniform stirring, and carrying out hydrolyzing for 24-48 hours at the temperature of 4 DEG C to 8 DEG C; or performing pasteurization on the raw milk, which is qualified through inspection and has the temperature of 4 DEG C to 8 DEG C, for 15 seconds at the temperature of 65 DEG C to 85 DEG C in the mixing process, cooling the temperature of the raw milk to 38 DEG C to 42 DEG C, adding the lactase, of which the weight is 0.05%-0.1% the total weight of the raw milk, carrying out uniform stirring, and carrying out hydrolyzing for 2-4 hours at the temperature of 38 DEG C to 42 DEG C; and carrying out sampling and detecting again to obtain zero-lactose full milk when the hydrolysis rate of the lactose is more than 98% or more and the residual quantity of the lactose is 0.06% or less. According to the zero-lactose full milk powder and the preparation method thereof, the lactose is thoroughly hydrolyzed before concentration and spray drying, the condition that the concentration, the spray drying and filling are performed after the product reaches a zero-lactose level is guaranteed, the hydrolysis rate of the lactose can be more than 98%, the zero lactose level is achieved, and the condition that the lactose content required by national standards is 0.5% or below is met.

Description

technical field [0001] The invention belongs to the technical field of dairy products, and in particular relates to a lactose-free whole milk powder and a preparation method thereof. Background technique [0002] Lactose is a unique carbohydrate in the milk of humans and mammals. According to the "Dietary Guidelines for Chinese Residents", due to the lack of lactase, the lactose in milk cannot be completely decomposed and absorbed by the small intestine, and the excess lactose cannot enter the colon. Utilization of fermentation in the colon results in lactose intolerance. [0003] Raw milk naturally contains 4%-6% lactose, and the lactose content of the produced whole milk powder is above 37%. There is no lactose-free whole milk powder product in the existing domestic market. In order to allow people to supplement nutrition without being troubled by lactose intolerance, a lactose-free whole milk powder has been developed. Contents of the invention [0004] Aiming at the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23C9/16A23C9/12A23C1/04
CPCA23C9/16A23C9/1206A23C1/04
Inventor 崔树勇李亚杰尹玉庆
Owner 河北德玉泉乳业有限公司
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