Innovation in the processing of fermented purple sweet potato (Ipomoea batatas L.) flour using an air fryer: Its impact on anthocyanin and flavonoid stabilityDini Nastiti Anjarsari, Astri Iga Siska and Ni Luh Putu YuniantariEPJ Web Conf., 344 (2025) 01033DOI: https://doi.org/10.1051/epjconf/202534401033