Quality by Design Perspectives for Designing Delivery System for Flavour and Fragrance: Current State‐of‐the‐Art and for Future Exploration

ABSTRACT Quality by design (QbD) is a systematic method for the development of product and process design to ensure quality and efficacy. In the fragrance and flavour industry, the design of delivery systems plays a crucial role in the overall product quality and consumer acceptance. This article analyses the current state‐of‐the‐art and future explorations from QbD perspective for designing appropriate delivery systems for flavour and fragrance applications. The QbD approach for delivery system design involves classifying critical quality attributes of the product and process, defining the critical process parameters and developing a design space to ensure product quality within the specified range. In addition, risk assessment and mitigation strategies are also a component of the QbD techniques, which ensure the robustness of the delivery system. Various delivery systems such as microencapsulation, nanoencapsulation, solid lipid nanoparticles and liposomes have been explored in the flavour and fragrance industry. These delivery systems provide controlled release, protection, and enhanced stability of the active ingredients. However, challenges such as scale‐up, reproducibility, and cost‐effectiveness need to be addressed to ensure their commercial viability. In conclusion, the QbD outlook provides a comprehensive framework for the design of carrier system for fragrance and flavour applications. The incorporation of risk assessment and mitigation strategies ensures the robustness of the delivery system, and the future exploration of advanced technologies may further enhance the efficiency and effectiveness of the QbD approach.