Advantages of ultrasonic-assisted extraction over hot water extraction for polysaccharides from waste stems of Rubia cordifolia L.: A comprehensive comparison of efficiency, structure, and bioactivity.

ABSTRACT: Rubia cordifolia L. (RCL) is a plant with both commercial and medicinal values, widely distributed worldwide. Its roots have been used to treat various diseases, including abnormal uterine bleeding, arthritis, and kidney stones. However, its stems are often overlooked and regarded as waste. This study employed response surface methodology to optimize the ultrasonic-assisted extraction (UAE) process for polysaccharides from RCL waste stems (RCLP), and compared energy consumption and carbon emissions with hot water extraction (HWE). The underlying mechanism of UAE for polysaccharide extraction was further explored. Additionally, the physicochemical properties and in vitro activities of RCLP extracted by UAE (UAE-P) and HWE (HWE-P) were evaluated and compared. The results showed that the opti

SUBMITTER: Ye G 

PROVIDER: S-EPMC12357284 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature