“…It's done by looking into their factors, levels, and responses triggered by variations in the system's trial settings. 6,16,23,26,27 Central-composite (CCD), Doehlert design, and Box–Behnken design (BBD) are the most used methods in extracting food bioactive compounds. Each design has strengths and drawbacks, and when selecting, one must consider the unique characteristics and requirements of the systems under investigation.…”