Ultrasound-enhanced subcritical water extraction of polysaccharides from Lycium barbarum L.

A review of bioactive plant polysaccharides: Biological activities, functionalization, and biomedical applications

“…In recent years, novel and effective extraction methods, such as supercritical fluid extraction, microwave-assisted extraction, and the most promising hot-water extraction, have gained increasing attention due to their environmentally friendly process, higher extraction efficiency, cost effectiveness, and structure-preservation ability (Chao, Ri-fu, & Tai-qiu, 2013;Le Normand et al, 2014;Song, Pranovich & Holmbom, 2013). For example, Cheng et al (2013) compared hot-water, ultrasonic assisted, enzyme, and microwave-assisted extractions to isolate bioactive polysaccharides and discovered that the yielded four polysaccharides had similar physicochemical properties, however, the antioxidant activity of the polysaccharides obtained by hot-water extraction was stronger than those isolated with other methods.…”

Subcritical Water Extraction of Bioactive Compounds from Plants and Algae: Applications in Pharmaceutical and Food Ingredients

“…Chao et al [39] extracted valuable natural polysaccharides from Lucium barbarum using SWE with the assistance of ultrasonication as a pre-treatment. Their study showed that the maximum recovery of polysaccharides was obtained at an extraction temperature of 100°C for 53 min.…”

“…Their study showed that the maximum recovery of polysaccharides was obtained at an extraction temperature of 100°C for 53 min. The process was very efficient because of its easy pre-treatment and the high yields of extracted polysaccharides [39]. Polysaccharides have also been recovered from Ganoderma lucidum (Lingzhi mushroom) using SWE [40].…”

Optimization of Subcritical Water Extraction of Polysaccharides from Inonotus Obliquus and their Antioxidant Activities

“…Besides, ionization constant of the subcritical water substantially increases with temperature, catalyzing chemical reactions such as hydrolysis and degradation without any additional catalyst (Öztürk, Irmak, Hesenov, & Erbatur, 2010). Additionally, water density, viscosity, diffusivity, electric conductance, and solvent ability are all changed (Chao, Ri-fu, & Tai-qiu, 2013). Therefore, SWE has been attracted considerable attention due to its temperature-dependent selectivity, environmentally friendly nature, highefficiency, and low-cost, compared with the conventional methods (Chao et al, 2013).…”

“…Additionally, water density, viscosity, diffusivity, electric conductance, and solvent ability are all changed (Chao, Ri-fu, & Tai-qiu, 2013). Therefore, SWE has been attracted considerable attention due to its temperature-dependent selectivity, environmentally friendly nature, highefficiency, and low-cost, compared with the conventional methods (Chao et al, 2013).…”