Modified starch-based fat replacers with improved functionality in food systems: a critical review

The increasing consumer demand for healthier food choices has led to the development of fat replacers that aim to reduce caloric content while maintaining appealing sensory characteristics. Modified cereal starches have emerged as a popular option among fat replacers due to their ability to mimic the functions of fat in various food formulations. This review examines the structural alterations in cereal starches and their effects on functional properties, including water retention, viscosity, and gelation. It also explores how enzymatically, physically, and chemically modified starches are effective in replacing fat with applications in bakery items, dairy substitutes, and emulsified food products. Furthermore, the review discusses the challenges of using modified cereal starches, including stability, flavor, interactions, and regulatory factors. Gaining a better understanding of the advantages and drawbacks of modified starches as fat replacers can help improve food formulations, leading to healthier products without compromising quality. This review provides valuable insights into the latest developments and practical applications in the industry, setting the stage for future breakthroughs in fat-replacement solutions. Modified cereal starches have emerged as a promising alternative due to their ability to mimic fat’s functional properties. Diverse applications in bakery, dairy, meat products, and emulsions, these starch-based fat replacers help maintain texture and mouthfeel while reducing fat content. Physical, chemical, and enzymatic modifications enhance starch’s stability, water-holding capacity, and emulsification, improving its performance as a fat substitute. Limitations like flavor loss, heat instability, and regulatory hurdles require innovative solutions to improve consumer acceptance and industrial scalability. Hybrid fat replacers (starch-protein blends), tailored modifications, and nanotechnology-driven solutions highlight the potential for developing new low-fat functional foods.