Add time:09/26/2019         Source:sciencedirect.com

This work aims to encapsulate Nisin (cas 1414-45-5) by complexation with exopolysaccharides (EPS), produced by Bacillus tequilensis-GM and Leuconostoc citreum-BMS, namely EPS-GM and EPS-BMS, respectively, using spray-drying technique, and to evaluate the effect of this encapsulation on the structure of nisin. Results related to suspensions turbidity showed that EPS/nisin complexes were formed through electrostatic attractions. These interactions were confirmed by Fourier transform infrared (FTIR) analysis. Scanning electron microscopy (SEM) micrographs of the spray-dried complexes revealed the presence of well-separated spherical microcapsules. Besides, results obtained by UV spectra showed that no significant changes occurred on EPS-GM/nisin microcapsules suggesting that this EPS may act as protective agent of nisin structure against spray-drying conditions.

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