Bibliographic citations
Moran, A., (2023). Caracterización del tocosh de tres variedades de papa (Solarum tuberosum L.) natural, cocido y liofilizado [Tesis, Universidad Femenina del Sagrado Corazón]. http://hdl.handle.net/20.500.11955/1188
Moran, A., Caracterización del tocosh de tres variedades de papa (Solarum tuberosum L.) natural, cocido y liofilizado [Tesis]. PE: Universidad Femenina del Sagrado Corazón; 2023. http://hdl.handle.net/20.500.11955/1188
@misc{renati/973518,
title = "Caracterización del tocosh de tres variedades de papa (Solarum tuberosum L.) natural, cocido y liofilizado",
author = "Moran Reyes, Angie Grace",
publisher = "Universidad Femenina del Sagrado Corazón",
year = "2023"
}
Tocosh is a traditional food from the high Andean regions of Peru that is obtained through the fermentation of potatoes. The objective of this study was to characterize the tocosh of three potato varieties (Walash, Blanca and Galleta) in relation to their physicochemical properties, proximal composition, energy, polyphenol content, antioxidant activity and microbiological profile obtained from natural, cooked and freeze-dried treatment. The methods used were titration, gravimetry, spectrophotometry and microbial count. The results (on a dry basis) show that the protein content was higher in White potato tocosh which varied between 1.65 to 6.44%, while the ash content ranged between 0.78 to 3.50%. Furthermore, carbohydrate content in the tocosh samples ranged from 89.54 to 97.83%. The lipid fraction was in favor of the Galleta potato tocosh, which varied between 0.07 to 0.44%. The methods used were titration, gravimetry, spectrophotometry and microbial count. In relation to the polyphenol content, the Walash potato tocosh ranged from 13.92 to 69.36 mg GAE/100 g, while the antioxidant activity measured by the DPPH and ABTS methods varied between 57.59 at 91.81 μmol TE/100 g and 49.82 to 225.95 μmol TE/100 g respectively. Lactobacillus count varied from 13.68 to 14.88 Ln CFU/g in the tocosh natural, while in the treatment by cooking and freeze-drying was <10 CFU/g. According to our findings, we conclude that tocosh is an excellent source of carbohydrates and Lactobacillus, and the tocosh freeze-drying process can be an alternative for the design of functional foods and nutraceuticals.
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