Global Functional Proteins Market Size study, by Source (Plants and Animals), by Type (Hydrolysates, Whey-based, Casein & Caseinate and Soy-based), by Structure (Primary, Secondary, Tertiary and Quaternary), by Form (Liquid and Powder), by Application (Functional Food & Beverages, Dietary Supplements and Animal Nutrition) and Regional Forecasts 2022-2028