Effects of simulated gastrointestinal digestion in vitro on the chemical properties, antioxidant activity, α-amylase and α-glucosidase inhibitory activity of polysaccharides from Inonotus obliquus

Microstructure characteristics of tea seed dietary fibre and its effect on cholesterol, glucose and nitrite ion adsorption capacities in vitro: a comparison study among different modifications

“…The adsorption properties of the PF, EHF, UTF and EUF for cholesterol in the gastrointestinal tract were determined using the o ‐phthalaldehyde method recently described in the literatures (Wang et al , ; Wang et al , ) with minor modifications. The fibre sample (0.1 g) was mixed with diluted yolk solution (20 mL) and adjusted to pH 2.0 with HCl (6 mol L −1 ).…”

“…The adsorption capacities of the fibre samples for nitrite ions in the gastrointestinal tract were determined using reported methods (Zhu et al , ; Wang et al , ) with slight modifications. The fibre sample (0.1 g) was mixed with sodium nitrite (20 mL, 100 µmol L −1 ) and stirred evenly.…”

Comparison of structural, antioxidant and immuno‐stimulating activities of polysaccharides from Tremella fuciformis in two different regions of China

“…However, the hydroxyl radical scavenging activities of TPS-FJ and TPS-SC were significantly declined (P < 0.05), but still retained to 59.64% and 60.37% (Fig. 7b), respectively, which was probably due to the decreased hydroxyl group and uronic acid content as well as the molecular weight changes of polysaccharides during digestion process (Chen et al, 2004;Wang et al, 2018). Also, the mixed oligosaccharides from pitaya (dragon fruit) flesh were resistant to hydrolysis by artificial human gastric juice and human a-amylase, giving maximum hydrolysis of 4.04% and 34.88% (Wichienchot et al, 2010).…”

“…Also, the mixed oligosaccharides from pitaya (dragon fruit) flesh were resistant to hydrolysis by artificial human gastric juice and human a-amylase, giving maximum hydrolysis of 4.04% and 34.88% (Wichienchot et al, 2010). Moreover, Wang et al (2018) reported that the antioxidant activities of polysaccharides from Inonotus obliquus were remarkably changed (P < 0.05), with the chemical composition, structure and conformation obviously altered after digestion. Overall, our results manifested that both TPS-FJ and TPS-SC shown good hydroxyl radical scavenging activities and still exhibited antioxidant potential after simulated gastrointestinal digestion in vitro, which could be considered a promising candidate for functional foods.…”

Antioxidant, α‐amylase and α‐glucosidase activity of various solvent fractions of I. obliquus and the preventive role of active fraction against H2O2 induced damage in hepatic L02 cells as fungisome

“…It has charcoal‐like appearance and irregular shape (Sagayama, Tanaka, Fukumoto, & Kashiwada, 2019). Since ages it has been used to treat various disorders such as cancer (Szychowski et al., 2018), diabetes (Wang et al., 2018), hyperlipidemia (Lim et al., 2010), and cardiovascular diseases (Han, Nan, Fan, Chen, & Zhang, 2019) in several countries like Russia, China, and other north‐European countries. Numerous scientific evidences also supported its folk value.…”