As the core component of dairy products, milk proteins possess rich nutritional value and a variety of bioactive functions. There are complex interactions (covalent bonding, non-covalent bonding, etc.) between active molecules (such as polyphenols, polysaccharides and vitamins) and milk proteins. These interactions not only affect the structure and functional properties of milk proteins (such as emulsifying properties, solubility, foaming properties, and gelling properties), but also may have significant impacts on food processing and preservation, as well as the nutritional value and functionality of final products. This review summarizes the interaction mechanisms between milk proteins and several types of active molecules and their effects on functional properties. It is of great significance for a systematic understanding of the binding between milk proteins and active molecules and provides a theoretical basis for in-depth research and industrial production of dairy products.

Goat milk has a high nutritional value, is rich in protein, fat, sugar, vitamins and mineral components. It has various functional properties such as easy digestion, hypoallergenicity, intestinal improvement, cholesterol reduction and antioxidant effect, which is the closest to breast milk. In order to promote the research and development of goat milk as a potential substitute for human milk, this paper compares the composition and content of nutrients in goat milk, cow milk and breast milk, and explains the theoretical basis for and feasibility of using goat milk as a substitute for breast milk. Besides, the functional properties and separation techniques of the main bioactive substances (whey protein, casein and oligosaccharides) in goat milk are reviewed, which can provide a scientific basis for the promotion of goat milk as a replacement for breastfeeding and for its application in infant formula milk powder.

Milk allergy is a severe foodborne illness. This disease usually occurs due to the interaction between milk proteins and their metabolites, leading to immune dysfunctions in the body. Milk allergy is gradually becoming a major global public health problem, especially for infants and young children. This review elaborates the mechanism behind the allergenicity of bovine casein, α-lactalbumin and β-lactoglobulin, introduces the technologies that have currently been successfully used in the detection of bovine milk allergens, discusses their advantages and disadvantages in practical applications, and systematically summarizes the physical, chemical and biological modification methods to reduce the allergenicity of bovine milk proteins. Finally, some hypoallergenic dairy products developed by researchers in recent years are listed, and the future directions for the development of dairy allergen modification and the future prospects of hypoallergenic dairy products. This review is expected to provide a theoretical basis and research ideas for the development of hypoallergenic dairy products in the future.

In order to provide users of goat milk powder with its nutritional information and, more broadly, to promote the goat milk industry’s development, this study designed and constructed a nutrition information management system for goat milk powder based on browser/server (B/S) architecture and the MySQL database using Java as the primary system development language and the front-end and back-end separation technology as well as deploying microservice architecture using the Docker platform. This system consisted of four functional modules: system management, data upload and addition, quick query and special topic analysis, which allowed rapid and accurate search of various nutritional ingredients of goat milk powder, obtaining of the quality differences of different types and regions of goat milk powder, and preliminary identification of the geographical origin of goat milk powder. This information management system is simple, widely applicable, and helpful for quality control and improvement of goat milk powder, and provides data guarantee for safe consumption of goat milk powder.

To identify and test the quality of commercial goat milk powder sold in different areas, reversed-phase high performance liquid chromatography (RP-HPLC) was used to determine the protein composition of 35 samples of pure and formulated goat milk powder purchased in different regions (Shaanxi and non-Shaanxi) of China and in other countries, and the difference in protein composition among goat milk powder from different production areas and that between pure and formulated goat milk powder were analyzed. The results showed that the contents of αs2-casein and β-casein in formulated milk powder were 20% and 24% lower than those in pure milk powder, respectively, and the contents of κ-casein and whey proteins were 30% and 50% higher than those in pure milk powder, respectively. However, the protein composition and content of pure goat milk powder from different regions were similar. Therefore, RP-HPLC is useful for protein quality evaluation of commercial goat milk powder.

Under the background of national health, people’s health awareness increases and consumer raise higher requirements for the functionality and diversity of dairy products. With the rapid development of the dairy processing industry, functional dairy products have shown strong market attractiveness. This paper summarizes the current status of research on functional dairy products such as bovine colostrum products, probiotic dairy products, dairy products with added vitamins and minerals, dairy products with added enzymes and prebiotic dairy products, reflects on the problems existing in the research and development of functional dairy products in China, and discuss future prospects in this regard. We hope that this review can provide reference for the development of functional dairy products.