Dataset Information

Surface Interactions between Bacterial Nanocellulose and B-Complex Vitamins.

ABSTRACT: The interactions between films of bacterial nanocellulose (BNC) and B complex vitamins were studied using a Quartz Crystal Microbalance with Dissipation monitoring (QCM-D). Thin films of BNC were generated in situ by QCM-D, followed by real-time measurements of the vitamin adsorption. The desorption of vitamins was induced by rinsing the system using phosphate buffers at a pH of 2 and 6.5, emulating gastric conditions. Changes in frequency (which are proportional to changes in adsorbed mass, ∆m) detected by QCM-D were used to determine the amounts of vitamin adsorbed and released from the BNC film. Additionally, changes in dissipation (∆D) were proven to be useful in identifying the effects of the pH in both pristine cellulose films and films with vitamin pre-adsorbed, following its changes during release. The effects of pH on the morphology of the vitamin-BNC surfaces were also monitored by changes in rugosity from images obtained by atomic force microscopy (AFM). Based on this data, we propose a model for the binding phenomena, with the contraction on the relaxation of the cellulose film depending on pH, resulting in an efficient vitamin delivery process.

SUBMITTER: Sanchez-Osorno DM

PROVIDER: S-EPMC7571027 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature

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Surface Interactions between Bacterial Nanocellulose and B-Complex Vitamins.

Sánchez-Osorno Diego Mauricio DM Gomez-Maldonado Diego D Castro Cristina C Peresin María Soledad MS

Molecules (Basel, Switzerland) 20200904 18

The interactions between films of bacterial nanocellulose (BNC) and B complex vitamins were studied using a Quartz Crystal Microbalance with Dissipation monitoring (QCM-D). Thin films of BNC were generated in situ by QCM-D, followed by real-time measurements of the vitamin adsorption. The desorption of vitamins was induced by rinsing the system using phosphate buffers at a pH of 2 and 6.5, emulating gastric conditions. Changes in frequency (which are proportional to changes in adsorbed mass, ∆m) ...[more]

PMID: 32899662

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Dataset Information

Surface Interactions between Bacterial Nanocellulose and B-Complex Vitamins.

Publications

Surface Interactions between Bacterial Nanocellulose and B-Complex Vitamins.

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