title: Rheological properties of a polysaccharide from floral mushrooms cultivated in Huangshan Mountain.
abstract: A polysaccharide fraction (FMPS) was isolated from floral mushrooms cultivated in Huangshan Mountain, and the rheological properties of FMPS in aqueous solutions were investigated. The FMPS solution showed shear-thinning behavior at 25°C. Dynamic viscoelastic tests revealed that G' and G″ exhibited strong dependences on the concentration and temperature. The FMPS/water system exhibited sol and weak gel behavior with the change of concentration and temperature. The exponent n of G'∼ω(n) and tan δ also exhibited strong dependences on the concentration and temperature. The gel point (cgel) of FMPS solution was 1.16×10(-2)g/mL at 15°C, and the Tgel of 1.4×10(-2)g/mL FMPS solution was 20.6°C. Dynamic frequency sweep measurements indicated that the FMPS gel system was stable in the selected range of frequency. The heating-cooling process proved that the sol-gel transition of FMPS in aqueous solutions was thermally reversible.
authors.affiliation: School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei 230009, People's Republic of China.
authors.forename: Jin-Long
authors.initials: JL
authors.lastname: Xu
authors.affiliation: Instrumental Analysis Center of Hefei University of Technology, Hefei University of Technology, Hefei 230009, People's Republic of China.
authors.forename: Jing-Cheng
authors.initials: JC
authors.lastname: Zhang
authors.affiliation: School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei 230009, People's Republic of China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Liu
authors.affiliation: School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei 230009, People's Republic of China.
authors.forename: Han-Ju
authors.initials: HJ
authors.lastname: Sun
authors.affiliation: School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei 230009, People's Republic of China. Electronic address: junhuiwang@hfut.edu.cn.
authors.forename: Jun-Hui
authors.initials: JH
authors.lastname: Wang
mesh_terms: D000363:Agaricales / Q000737:chemistry*; D002681:China; D004040:Dietary Carbohydrates / Q000302:isolation & purification; D004548:Elasticity; D011134:Polysaccharides / Q000737:chemistry* / Q000302:isolation & purification; D012212:Rheology; D012996:Solutions; D013314:Stress, Mechanical; D013696:Temperature; D014783:Viscosity
chemical_list: D004040:Dietary Carbohydrates; D011134:Polysaccharides; D012996:Solutions
keywords: Floral mushroom; Polysaccharides; Rheological properties