Optimization of ultrasound-assisted compound enzymatic extraction and characterization of polysaccharides from blackcurrant

Optimisation of pressurised water extraction of polysaccharides from blackcurrant and its antioxidant activity

“…In addition, the absorption at approximately 1417.98 cm À1 indicated the presence of uronic acid . Moreover, the spectra of RNLP I obtained by PWE and the ultrasound-assisted compound enzymatic extraction (UACEE) (Xu et al, 2015) were similar. Overall, these results showed that RNLP I exhibited all of the typical absorption peaks of a polysaccharide.…”

“…In addition, in our previous studies on extraction process of RNLP, ultrasonication (Ren, Yang, Xu, Li, & Yu, 2012) and ultrasound-assisted compound enzymatic extraction (Xu, Zhang, Yang, Song, & Yu, 2015) were also used to improve the yield, and the yield was 11.19% and 14.28%, respectively. Though ultrasound-assisted compound enzymatic extraction had the relatively higher RNLP yield, the higher cost may limit its widespread use.…”

Extraction, characterization and antioxidant activity of water-soluble polysaccharides from Tuber huidongense

“…The Box-Behnken design (BBD), only have three levels, is a popular form of RSM and has been successfully applied by a number of investigators for optimizing complex processes, including polysaccharides extraction [23][24][25][26]. It is more efficient and easier to arrange and interpret experiments in comparison with others [27].…”

Subcritical water extraction of betulinic acid from birch bark

“…A second-order polynomial function was fitted to results in order to correlate the relationship of each factor to the response. For the three factors concerned, this equation is (Xu et al, 2015):…”