Physical characteristics and antioxidant effect of polysaccharides extracted by boiling water and enzymolysis from Grifola frondosa

Extraction, isolation, characterization and antioxidant activity of polysaccharides from Astragalus membranaceus

“…The lower molecular weight will induce the higher antioxidant activities (Chen et al, 2008). Therefore, combined enzyme extraction, not only enhanced the yield of the polysaccharides but also reduced the Mw, resulting in enhancement of their antioxidant activities (Fan et al, 2011).…”

“…The scavenging activity of APs (85.6%) was significantly higher than that of APs-R (68.42%) at 3 mg/mL, but the average molecular weight of APs (7.39 × 10 4 Da) was much lower than APs-R (8.42 × 10 4 Da). Thus, the lower average molecular weight of the polysaccharide by CEE than by RE plays an important role for their higher antioxidant activities (Fan et al, 2011). An explanation for this molecular weight-antioxidant activity relationship is that, at an equal mass concentration, lower molecular weight of polysaccharide may provide a larger number of hydroxyl groups for antioxidant action (Leung et al, 2009).…”

Dynamic high pressure microfluidization-assisted extraction and antioxidant activities of lentinan

“…The hydroxyl radical scavenging activities of samples extracted by DHPM-assisting and traditional hot water were determined according to Fan [23] with some modifications. 2 mL different concentrations (0.5-5.0 mg/mL) of the samples, 2 mL FeSO 4 (9 mM), 2 mL salicylic acid-ethanol (9 mM), and 2 mL H 2 O 2 (8.8 mM) were added to the colorimetric tube in sequence.…”

Optimization of subcritical water extraction of polysaccharides from Grifola frondosa using response surface methodology

“…Polysaccharides from G. frondosa (PGF) has recently attracted considerable attention for its various physiological activities including antioxidant,[56] antitumor,[7] antiatherosclerotic,[8] antifatigue effects,[910] and immunostimulating activities. [11] Different methods are established for the extraction of polysaccharides from different plant, including traditional hot water extraction (HWE),[12–14] microwave-assisted extraction,[15] ultrasonic extraction,[1617] andenzyme-assisted extraction.…”

“…[11] Different methods are established for the extraction of polysaccharides from different plant, including traditional hot water extraction (HWE),[12–14] microwave-assisted extraction,[15] ultrasonic extraction,[1617] andenzyme-assisted extraction. [518] In recent years, many papers have been published on the applicability of SWE for the extraction of bioactive compounds from plants. Examples of such studies include, essential oils from Bunium persicum Boiss,[19] extraction of phenolic compounds from potato peel,[2] and extraction of flavonol quercetin from onion skin.…”