Simultaneous extraction and decaffeination process optimization of green tea-based beverage using Box Behnken design-response surface methodology

Green tea is a popular beverage consumed worldwide after water, but some people cannot consume it due to its high caffeine concentration. One of the easiest methods to reduce caffeine and retain the bioactive compounds in green tea is through the simultaneous extraction and decaffeination process using hot water. Thus, this work aimed to achieve high flavonoid and low caffeine with antioxidant activity (IC50) in green tea powder-based beverages through simultaneous extraction and...