Microbiología
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Browsing Microbiología by Author "Álzate Calderón, Paola"
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Item Desarrollo de un empaque biodegradable basado en almidón de papa y aceite esencial de orégano (Origanum vulgare) para la preservación de productos cárnicos(Universidad Santiago de Cali, 2023) Ramírez Gutiérrez, Valentina; Falco Restrepo, Aura Dayana del Carmen; Álzate Calderón, PaolaThis research focuses on addressing the environmental problems caused by the excessive use of plastic, proposing the development of biodegradable packaging to preserve meat and offer an alternative to petroleum- derived plastic packaging. Regarding the experimental part, biodegradables films were elaborated using potato starch, chitosan, and the effect of the addition of different concentrations of oregano essential oil (0%, 0.25%, 0.50%, and 1%) used as antimicrobial, in the formulation of the elaborated films was evaluated. The results showed that, in the physicochemical tests (solubility, humidity, and thickness), the films tended to increase these properties as the AEO content increased. Regarding the microbiological results, it was observed that the microbial inhibition halos are greater as the concentration of oregano essential oil increases and that the oil acts better against Gram- positive bacteria than against Gram-negative bacteria. As a general conclusion, it can be indicated that the films elaborated prove to be a viable alternative to conventional packaging, showing a promising future in this area of researchItem Revisión sistemática sobre la producción de biodiésel a partir de microorganismos oleaginosos en Latinoamérica con énfasis en Colombia(Universidad Santiago de Cali, 2023) Quiñones Aguirre, Lina Natalia; Álzate Calderón, Paola; Mellizo, Jhon EricCurrently, the production of biodiesel is considered the best alternative to reduce among other things the environmental impacts caused in the production and use of fossil fuels, the use of oily microorganisms as a raw material to produce biodiesel triggers great interest because it has great advantages compared to other types of raw materials, among these the reduction of production costs. That is why we proposed the elaboration of a systematic review of the existing literature during the period 2008-2022 on studies related to the production of biodiesel from oilseed microorganisms in the most representative countries of Latin America (Brazil, Argentina, Colombia, Peru, Ecuador, Mexico, and Chile). For this, a search log was prepared in which databases of gray literature type, specialized and multidisciplinary are included. The data were analyzed according to some of the parameters recommended by the PRISMA Declaration. In total, 70 publications were included, finding that the type of microorganism most used in the different studies were Microalgae (53) and that the country with the most reports for the different microorganisms was Brazil (31), as well as relevant information such as lipid productivity, biomass and fatty acids according to the information provided in the different studies for each case It is expected that this review will strengthen the studies for the production of biodiesel using oilseed microorganisms as raw material in Colombia, providing consolidated and relevant information so that the scientific community can develop related studies and promote the use of microorganisms at an industrial and biotechnological level