Advances in the development of functional, heat- stable cocoa confectionery chocolate bar fortified with millet-derived nutrients and natural sweeteners: A comprehensive review

Abstract:

Chocolate's distinct sensory qualities and bioactive makeup make it one of the most popular confections consumed globally. However, traditional chocolate formulations have drawbacks like high refined sugar content and poor thermal stability, which limit their applicability to warm climates and health-conscious consumers. The creation of functional and heat-stable cocoa confections through ingredient modification and process optimization has garnered more research attention in recent years. Millets have become a promising ingredient for fortifying chocolate products because of their rich nutritional profile, ability to withstand climate change, and functional qualities. Similarly, because of their mineral content and practical benefits, natural sweeteners like jaggery have become more popular as substitutes for refined sugar. The development of heat-stable cocoa confections enhanced with natural sweeteners and nutrients derived from millet is thoroughly examined in this review. The review covers the mechanisms behind heat sensitivity, cocoa butter polymorphism, and the structural and thermal properties of chocolate. The importance of conching, tempering, particle size distribution, and demoulding conditions in enhancing heat resistance and product quality is emphasized. In the context of chocolate fortification, a critical analysis is conducted of the nutritional makeup, processing, and functional characteristics of millets, specifically finger millet. Additionally reviewed is the impact of natural sweeteners like jaggery on product functionality, antioxidant potential, and nutritional quality. These ingredients' effects on rheological behavior, melting properties, sensory quality, and shelf-life stability are also covered. In order to support the development of heat-stable, nutritionally enhanced cocoa confections that are appropriate for tropical climates and changing consumer demands, important research challenges and future directions are finally described.