Lactoferrin-rich active whey powder as well as preparation and application thereof

By adding sodium chloride to release lactoferrin during the processing of whey powder, and combining membrane filtration, ultrafiltration and spray drying techniques, whey powder rich in lactoferrin was prepared, which solved the problems of low lactoferrin content and reduced activity in existing whey powders, and achieved efficient enrichment and retaining lactoferrin activity.

CN119732411APending Publication Date: 2025-04-01JIANGNAN UNIV
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Patent Information

Application Number
CN202411801321.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-09
Publication Date
2025-04-01

AI Technical Summary

Technical Problem

It is difficult for existing whey powder products to retain the activity of functional proteins in whey during processing, resulting in low lactoferrin content and reduced activity, which cannot meet the market's demand for high-quality nutritious foods.

Method used

Add sodium chloride to the sterilized skim milk to release lactoferrin, and then lactoferrin-rich whey protein was obtained through membrane filtration. After ultrafiltration, desalination and spray-drying, lactoferrin-rich whey powder was prepared.

Benefits of technology

The enrichment rate and activity of lactoferrin is significantly improved. The purity of lactoferrin reaches more than 98%, and the recovery rate reaches more than 70%. It retains the multiple biological activities in whey. It is suitable for infant formula milk powder, health food and clinical nutritional products.

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Abstract

The invention discloses active whey powder rich in lactoferrin as well as preparation and application of the active whey powder, and belongs to the technical field of preparation of dairy products. The preparation method comprises the following steps: adding sodium chloride into sterilized skimmed milk to release lactoferrin, performing membrane filtration to obtain membrane filtration permeate (lactoferrin-rich whey protein phase), and finally performing ultrafiltration, desalination and spray drying to obtain the lactoferrin-rich whey powder. The lactoferrin-rich whey powder prepared by the preparation method disclosed by the invention is higher in lactoferrin content and higher in activity. In addition, lactoferrin and lactoferrin-free whey protein can be separated from membrane filtration permeate through an ion exchange column, and then high-purity lactoferrin powder and lactoferrin-free whey protein are prepared.
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