Browsing by Author "Paredes Pantoja, Viviana Elizabeth"

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    Efecto de un recubrimiento comestible de gelatina y epsilon-polilisina en la calidad microbiológica de mora de castilla (Rubus glaaucus Benth)
    (Universidad Técnica de Ambato. Facultad de Ciencia e Ingeniería en Alimentos. Carrera de Ingeniería en Alimentos., 2017-04) Paredes Pantoja, Viviana Elizabeth; Arancibia Soria, Mirari Yosune
    The blackberry (Rubus glaucus Benth) is an Andean crop with nutritional and antioxidant properties, which reduces the risk of developing degenerative and cardiovascular diseases and boosts the immune system. The poor postharvest management and the soft texture of the drupes, make it susceptible to microbial attack and fast deterioration, which represent a problem for agribusiness. In the present work, an edible coating made with gelatin and ɛ-polylysine was developed to evaluate its effect on the respiration rates, microbiological and sensory quality of blackberry during refrigerated storage. The gelatin coating with a concentration of 300 microgran per ml of ɛ- polylysine decreased counts of mesophilic aerobic bacteria at 0,46 log cfu per gram, molds and yeasts at 1,82 log cfu per gram and allowed to reduce CO2 production during respiration. In addition, it improved the texture, color and overall acceptance of the fruit during sensory evaluation. ɛ-polylysine can be used as an antimicrobial agent in edible fruit coatings and increase their shelf life, in blackberry for up to 8 days.