Carrera Ingeniería en Alimentos

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    Estimación y efecto sobre la vida útil de fresa (Fragaria x ananassa) con el uso de biofilm producido por Komagataeibacter xylinus
    (Universidad Técnica de Ambato. Facultad de Ciencia e Ingeniería en Alimentos. Carrera de Ingeniería en Alimentos., 2019-05) Acosta Telenchana, Jorge Luis; Terán Mera, David Andrés
    The strawberry is susceptible to physiological changes, great vulnerability to microbial attack, the benefits of edible coatings are: slow breathing rate, prolonged periods of storage, retention of firmness and reduced microbial growth, so the objective of this research work is estimate the useful life of strawberry (Fragaria x ananassa) with the use of biofilm produced by Komagataeibacter xylinus. It was determined that the samples with bacterial cellulose coating have an average life time of 12, 6 and 3 days while samples without coating the time was 8, 3 and 2 days at temperatures of 4, 25 and 37 Celsius degrees. The ultra-freeze analysis showed changes of 1 percent; 46.2 percent; 12.6 percent and 2.41 percent in samples without coating, on the other hand the samples with coating changes were 0.3 percent; 15.9 percent; 4 percent and 1.49 percent in pH, Acidity, Brix degrees and weight loss respectively. The samples containing bacterial cellulose coating impregnated with silver nanoparticles showed no growth of microorganisms during the analysis. The container of bacterial cellulose impregnated with natural gelatin presented a 15.3 percent weight loss, 76.4 Brix degrees and a dark red final coloration in the sample, the bacterial cellulose container with end seals presented greater weight loss of 19 percent. , 8 percent; 83.6 Brix degrees and a medium dark red final color.