Wood Hemicelluloses as Innovative Wall Materials for Spray-Dried Microencapsulation of Berry Juice: Part 1—Effect of Homogenization Techniques on their Feed Solution Properties

Abstract The use of wood hemicelluloses, including galactoglucomannans (GGM) and glucuronoxylans (GX), in spray-dried microencapsulation bioactive compounds has not been reported. Our study aims to investigate the benefits GGM GX powders (sGGM sGX) along with effects homogenization techniques (magnetic stirring, ultrasonication, a combination UltraTurrax microfluidization) on physicochemical properties feed solutions (10–20%, w/w). Feed bilberry juice sGGM, sGX, mixtures either sGGM or sGX methylcellulose (MC) carboxymethylcellulose (CMC) were examined produce highly stable for microencapsulation. ultrasonication amplitudes (30–80%) viscosity particle size distribution more profound than observed their counterparts. Unlike solutions, homogenized by microfluidization formed gel-like structure. Microfluidization also caused loss total anthocyanin content (TAC) solutions. Magnetic stirring resulted no gel formation lowest solutions; hence, it is an effective method preparing hemicellulose have high heat stability melting temperatures 170–180 °C. + CMC was over 1 week storage Storing reduced TAC increased viscosity. results indicated that potential as wall materials compounds.