Optimisation of the drum drying parameters and citric acid level to produce purple sweet potato (Ipomoea batatas L.) powder using response surface methodology

• Main Authors: Senevirathna, Sri Sampath Janaka, Ramli, Nurul Shazini, Mohamad Azman, Ezzat, Juhari, Nurul Hanisah, Karim, Roselina
• Format: Article
• Published: MDPI AG 2021
• Online Access: http://psasir.upm.edu.my/id/eprint/94449/; https://www.mdpi.com/2304-8158/10/6/1378/htm

Purple sweet potato (PSP) is a rich source of anthocyanins, but the anthocyanin content and color can be affected by the drying method and processing condition. Response surface methodology (RSM) with a Box–Behnken design (BBD) was used to investigate the effects of citric acid (CA) concentration, s...