Abstract

PEREZ-MARROQUIN, XA et al. Development of a biomaterial based on starch-gelatin blends: Physical, mechanical and barrier properties. Biotecnia [online]. 2022, vol.24, n.3, pp.107-114.  Epub June 19, 2023. ISSN 1665-1456.  https://doi.org/10.18633/biotecnia.v24i3.1682.

Films made from a mixture of Chayotextle starch-Gelatin (SG) were prepared according to the following concentrations SG 3:1, SG 2:2, and SG 1:3. Two controls were considered; gelatin (G) and starch (S) films. Glycerol was added as a plasticizer to all treatments at 2 %. The aim of this research was the study of the effect of different concentrations of chayotextle starch and gelatin on the physical, mechanical and barrier properties of films. G treatment presented higher solubility in comparison to those treatments with presence of starch. FT-IR exhibited the characteristic molecular fingerprint of gelatin and starch. There was not detected new bands in the spectrometers of the mixed films. The lowest percentage of crystallinity appeared in SG 2:2 films with 37.8 %. This value increased up to 64.9 % in the G treatment. The variation of ratios in the mixture starchgelatin produced differences in structure and properties of films. These properties could be configured, adapted and applied according to the requirements of the food engineering, pharmaceutical, and biomedical industry.

Keywords : Chayotextle; Films; Gelatin; mechanical properties; starch.

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