Quality by design-based optimization and HP-TLC densitometric standardization of Theobroma cacao L. extract as a nutraceutical supplement - Muppayyanamath, Atith; Harish, Darasaguppe R.; Mastiholimath, Vinayak; Patil, Priyanka P.; Patil, Vishal S.; Hegde, Harsha V.; Roy, Subarna (Frontiers in Nutrition, 2025)