22 Oct 2025 Study of the quantitative content of vitamin c and extractive substances in jerusalem artichoke using ultrasonic treatment Jerusalem artichoke; vitamin C; ultrasonic treatment; extraction; iodometry; extractive substances; magnetic stirrer Daria Toktorbek kyzy , Aidai Imanakunova , Adilya Erkova , Asilkan Dzhumanazarova , Anarbu Muratalieva https://doi.org/10.54890/1694-8882-2025-3-45