Abstract
Pre-spray-drying processing may affect stability after reconstitution of emulsion-based powders, such as infant formulas. This study aimed to evaluate the effects of pasteurization temperature and total solids (TS) of the feed on the stability of the emulsions obtained from the reconstituted powders. Four infant formula powders (50%-75 °C, 50%-100 °C, 60%-75 °C, and 60%-100 °C) were produced at pilot scale, from emulsions with 50 or 60% TS pasteurized at 75 or 100 °C for 18 s. Both the emulsion feeds and the emulsions from the reconstituted powders (12.5% TS) were analyzed. The results showed that feeds with 60% TS were flocculated, as indicated by the large particle size and viscosity and the pseudoplastic behavior. Light microscopy revealed that, during spray drying, the flocs were disrupted in 60%-100 °C, while the 60%-75 °C emulsion remained flocculated, reducing its stability post-reconstitution. Although all four emulsions were mainly stabilized by caseins, the presence of β-lactoglobulin was also detected at the oil–water interface, in native state in the formulas preheated at 75 °C and aggregated in the formulas preheated at 100 °C. In conclusion, both the degree of whey protein denaturation (resulting from pasteurization) and the TS of the concentrates during infant formula production affected the emulsion stability of the reconstituted powders.
Subject
Plant Science,Health Professions (miscellaneous),Health (social science),Microbiology,Food Science
Reference32 articles.
1. StrategyR Baby Foods and Infant Formula (2021, April 14). Global Market Trajectory & Analytics. Available online: https://www.strategyr.com/market-report-baby-foods-and-infant-formula-forecasts-global-industry-analysts-inc.asp.
2. Optimising Emulsion Stability during Processing of Model Infant Formulae Using Factorial Statistical Design;Int. J. Dairy Technol.,2015
3. Bhandari, B., Bansal, N., Zhang, M., and Schuck, P. (2013). Handbook of Food Powders: Processes and Properties, Woodhead Publishing.
4. Influence of Emulsifier Type on the Spray-Drying Properties of Model Infant Formula Emulsions;Food Hydrocoll.,2017
5. Influence of Drying Temperatures and Storage Parameters on the Physicochemical Properties of Spray-Dried Infant Milk Formula Powders;Int. Dairy J.,2020
Cited by
4 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献