International Journal of Biological Macromolecules
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Effects of extraction methods on the antioxidant activities of polysaccharides from Agaricus blazei Murrill.
Five polysaccharides were obtained from Agaricus blazei Murrill (ABM) through different extraction methods including hot water extraction, single enzyme extraction (pectinase, cellulase or papain) and compound enzymes extraction (cellulase:pectinase:papain). Their characteristics such as the polysac...
Carboxymethyl gum kondagogu-chitosan polyelectrolyte complex nanoparticles: Preparation and characterization.
The interaction between carboxymethyl gum kondagogu and chitosan was optimized to prepare polyelectrolyte complex nanoparticles using ofloxacin as the model drug. The effect of concentrations of carboxymethyl gum kondagogu and chitosan on the particle size and % drug entrapment was screened using 2-...
Salicylic acid and some of its derivatives as antibacterial agents for viscose fabric.
Salicylic acid and three of its derivatives were used to provide antibacterial properties to viscose fabrics. The four bactericides used were bonded to the viscose fabrics using epichlorohydrin or polymer binders. Optimization of the salicylic acid and its derivatives as well as the concentration of...
Effect of Sophora subprosrate polysaccharide on oxidative stress induced by PCV2 infection in RAW264.7 cells.
In this study, an oxidative stress model was first developed in a mouse macrophage cell line (RAW264.7 cells) by infecting the cells with porcine circovirus type 2 (PCV2). The regulatory effect of Sophora subprosrate polysaccharide (SSP) on PCV2-induced oxidative stress was investigated. The results...
Modeling and analysis of film composition on mechanical properties of maize starch based edible films.
The present study investigates the influence of composition (content of maize starch (1-3g), sorbitol (0.5-1.0ml), agar (0.5-1.0g) and tween-80 (0.1-0.5ml)) on the mechanical properties (tensile strength, elongation, Young's modulus, puncture force and puncture deformation) of the maize starch based...
Effect of different drying methods on chemical composition and bioactivity of tea polysaccharides.
Four polysaccharides (TPS-F, TPS-V, TPS-S and TPS-M) were obtained from tea (Camellia sinensis) leaves by freeze-drying, vacuum-drying, spray-drying and microwave-vacuum drying, respectively. Their chemical composition and biological properties were comparatively studied. The results showed these TP...
Preparation of TEMPO-oxidized cellulose/amino acid/nanosilver biocomposite film and its antibacterial activity.
Novel biocomposite films were prepared by employing amino acid phenylalanine (Phe) or tryptophan (Try) functionalized TEMPO-oxidized cellulose (TOC) with silver nanoparticles (AgNPs) produced in situ by reduction with silver nitrate and sodium borohydride via homogeneous and heterogeneous approaches...
Porous starch extracted from Chinese rice wine vinasse: Characterization and adsorption properties.
Chinese rice wine vinasse (the fermentation residue after removal of the crude wine or beer) contains 20-30% residual native starch. These starches are partly hydrolyzed by amylase and glucoamylase during rice wine fermentation, indicating that it is a potential source of porous starch, which is a v...
A fibrinolytic, alkaline and thermostable metalloprotease from the newly isolated Serratia sp RSPB11.
This study shows the purification and characterization of metalloprotease (serralysin) with fibrin and fibrinogenolytic property, from the newly isolated Serratia marcescens RSPB11. This protein macro molecule was more stable over a wide range of pH (6-10) and the temperatures up to 60°C. It showed...
Substrate preference of a Geobacillus maltogenic amylase: A kinetic and thermodynamic analysis.
The gene encoding a maltogenic amylase (MAase) from a newly isolated strain of thermophilic Geobacillus has been isolated, cloned and expressed. Following purification, biochemical and structural characterization have been performed. The enzyme exhibited maximal activity at a broad temperature range...