Abstract

BLAS CERDAN, Willian Genaro et al. Obtaining gallic acid from Caesalpinia spinosa (Fabaceae) “tara” product of solid state fermentation. Arnaldoa [online]. 2024, vol.31, n.1, pp.139-150.  Epub Apr 20, 2024. ISSN 1815-8242.  http://dx.doi.org/10.22497/arnaldoa.311.31107.

This research was carried out in order to obtain gallic acid by the action of the hydrolytic enzymes of Aspergillus niger that degrade the tannins presents in Caesalpinia spinosa (Fabaceae) “tara”, using a solid state bioreactor. The fermentations were carried out for 2, 4 and 6 days at room temperature, with an initial pH of 7.0 and a microbial inoculum of 109 espores/ml. The maximum production was obtained 4 days after the fermentation process with a purity of 28.71% gallic acid, according to the readings provided by the UV-Vis spectrophotometer with microplate reader. According to the statistical analysis, the different exposure times present significant differences. It was determined that there is a direct relationship between fermentation time and absorbance.

Keywords : Gallic acid; Aspergillus niger; Caesalpinia spinosa; bioreactor; solid state.

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