Extraction of polysaccharides from Phellinus nigricans mycelia and their antioxidant activities in vitro

Traditional uses, fermentation, phytochemistry and pharmacology of Phellinus linteus: A review

“…[158] reported the antioxidant activity of PL was affected by the molecular weight, monosaccharide compositions and chemical structures of the polysaccharides. Assays in vitro showed the polysaccharides performed strong antioxidant activity including reducing power and scavenging activity against superoxide anion, hydroxyl as well as DPPH radicals [78,157].…”

Extraction optimization of antioxidant polysaccharides from leaves of Gynura bicolor (Roxb. & Willd.) DC

“…Some reports indicated that liquid-to-solid ratio, extraction time and temperature affected the yield of polysaccharides (Nie et al, 2013;Wang et al, 2014;Chen et al, 2014). To find a suitable time, extraction was performed for 1-4h while keeping extraction temperature at 50 °C and liquid-to-solid ratio at 20:1.…”

Optimization of ultrasound assisted extraction of of goji berry (Lycium barbarum) fruits and evaluation of extracts' bioactivity

“…Among the currently used extraction methods which include HWE, and microwave assisted extraction (MAE) (Valdes, Vidal, Beltran, Canals, & Garrigos, ), the UAE was been selected because of the lower energy and solvent consumption and higher efficiency (Vilkhu, Mawson, Simons, & Bates, ). This method has been already applied for natural materials extraction, such as fruits of Litchi chinensis Sonn (Chen, Luo, Gao, & Zhu, ) and Trametes robiniophila (Wang, Wang, & Quan, ). Moreover, an UAE with a combination of a column elution fractionation and supercritical anti‐solvent has been applied for the re‐crystallization for purifying and preparing micro‐sized particles containing the carotenoid zeaxanthin dipalmitate from the L. barbarum fruits (Chang et al, 2012).…”

“…To study and optimize the above mentioned novel extraction methods Response Surface Methodology is used which is a powerful mathematical and statistical technique that explores the relationships and interactions among multiple variables involved in the extraction process by reducing the number of the required experimental points. Until now, RSM has been frequently successfully applied in the optimization of conditions in food and pharmaceutical research (Yin & Dang, 2008; Chen et al, ; Chang et al, 2012; Muralidhar, Chirumamila, Marchant, & Nigam, 2001; Wang et al, ; Wang, Liu, & Hu, 2014; Yong et al, 2014; Yang et al, 2015).…”