Microwave-assisted extraction, chemical characterization of polysaccharides from Lilium davidii var. unicolor Salisb and its antioxidant activities evaluation

Optimization for ultrasound-assisted extraction of polysaccharides with chemical composition and antioxidant activity from the Artemisia sphaerocephala Krasch seeds

“…In addition, the absorption bands with strong intensities at 1348.5 cm −1 could be assigned to deforming vibrations of C H bond. The peak at around 1251.1 cm −1 was asymmetrical carbonyl stretching [31]. Furthermore, there was only one peak (1100 and 1010 cm −1 ) of ASKP, which indicated the existence of pyranose [19].…”

Optimization of Microwave-Assisted Extraction of Water-Soluble Polysaccharides from Piteguo Fruit by Response Surface Methodology

“…It was necessary to select the parameters that had major effects (Bagherian et al, 2011;. It was reported that extraction power, extraction temperature, extraction time, ratio of water to raw material and extraction number had significant effects on the polysaccharides (Ru et al, 2009;Bagherian et al, 2011;Zhao et al, 2013). While Microwave power, extraction time and ratio of water to raw material were regards as the critical influencing factors in MAE (Ru et al, 2009;Zhao et al, 2013).…”

“…It was reported that extraction power, extraction temperature, extraction time, ratio of water to raw material and extraction number had significant effects on the polysaccharides (Ru et al, 2009;Bagherian et al, 2011;Zhao et al, 2013). While Microwave power, extraction time and ratio of water to raw material were regards as the critical influencing factors in MAE (Ru et al, 2009;Zhao et al, 2013). So the three parameters were screened by single-factor experiment including X 1 (microwave power, 100 _ 600 W), X 2 (extraction time, 2.5 _ 15 min), and X 3 (W/M ratio, 10 _ 60 mL/g), and extraction was repeated 3 times in this experiment.…”

“…MAE procedure was applied to extract crude polysaccharides due to its positive efficiency, low cost and operation convenience in many polysaccharide extraction examples including from Lycoris aurea (Ru et al, 2009), from tremella , from Lilium davidii var. unicolor Salisb (Zhao et al, 2013), and so on. Recently, response surface methodology (RSM) (Yi et al, 2010;Zhong and Wang, 2010;Zou et al, 2011) is generally considered an effective statistical technique for optimizing complex processes, due to its obvious advantages, e.g.…”

Extraction, purification, characterization and antioxidant activity of polysaccharides from Piteguo fruit

“…So far, there were a huge number of researches about extraction technologies on polysaccharides, including solvent extraction , bio enzymatic method (Yi et al, 2010;Wijesinghe et al, 2011), microwaveassisted extraction (Zhao et al, 2013), supercritical fluid extraction (Wang and Weller, 2006), ultrasonic extraction (Hromadkova and Ebringerova, 2003;Yi et al, 2010;Yan et al, 2011;Chen et al, 2012;Xie et al, 2012;Tian et al, 2012), and etc. However, there were few papers dealing with polysaccharides extraction technology from PTG, as well as its structures and activities.…”