Predictive microbiology is an interesting tool that allows evaluating the behavior of biomass and metabolites in different culture media, providing multiple benefits, whether scientific or industrial, for these and other reasons the objective of this research was to evaluate applied sigmoidal kinetic models to the growth of Saccharomyces boulardii in milk. For this purpose, flasks were prepared with 200 mL of fresh cow's milk, previously sterilized at 121 ° C x 15 min, then the strains were inoculated at a temperature of 37 ° C and incubated at the same temperature under constant shaking of 20 revolutions per minute (rpm) in a water bath with shaking, for 7 h; To construct the curves and obtain the growth constants, colony-forming units were counted per milliliter (cfu / ml) at one-hour intervals, with a monocular microscope and Neubauer chamber. Also, the pH and titratable acidity exp...

Predictive microbiology is an interesting tool that allows evaluating the behavior of biomass and metabolites in different culture media, providing multiple benefits, whether scientific or industrial, for these and other reasons the objective of this research was to evaluate applied sigmoidal kinetic models to the growth of Saccharomyces boulardii in milk. For this purpose, flasks were prepared with 200 mL of fresh cow's milk, previously sterilized at 121 ° C x 15 min, then the strains were inoculated at a temperature of 37 ° C and incubated at the same temperature under constant shaking of 20 revolutions per minute (rpm) in a water bath with shaking, for 7 h; To construct the curves and obtain the growth constants, colony-forming units were counted per milliliter (cfu / ml) at one-hour intervals, with a monocular microscope and Neubauer chamber. Also, the pH and titratable acidity exp...

El objetivo de la presente investigación fue evaluar el efecto del uso de prefermentos y bacterias acido – lácticas (Saccharomyces boulardii, y Lactobacillus lactis) en la elaboración de pan de trigo. Para tal efecto se aplicó un diseño factorial 22, donde los factores fueron el tipo de prefermento (trigo y centeno) y las cepas en estudio (Saccharomyces boulardii, y Lactobacillus lactis), asimismo, se consideraron como variables de respuesta las propiedades físicas (Volumen, pH, acidez, porosidad) tanto en las masas y panes, también, se evaluó las propiedades cromáticas (CIE – LAB), asimismo, la composición proximal, el perfil sensorial y la cinética microbiana mediante los modelos matemáticos de Gompertz y Logístico, los resultados mostraron que en el volumen de las masas, el tratamiento compuesto por trigo y Saccharomyces boulard(SB) presentaron un mejor desempeño con...

Predictive microbiology is an interesting tool that allows evaluating the behavior of biomass and metabolites in different culture media, providing multiple benefits, whether scientific or industrial, for these and other reasons the objective of this research was to evaluate applied sigmoidal kinetic models to the growth of Saccharomyces boulardii in milk. For this purpose, flasks were prepared with 200 mL of fresh cow's milk, previously sterilized at 121 ° C x 15 min, then the strains were inoculated at a temperature of 37 ° C and incubated at the same temperature under constant shaking of 20 revolutions per minute (rpm) in a water bath with shaking, for 7 h; To construct the curves and obtain the growth constants, colony-forming units were counted per milliliter (cfu / ml) at one-hour intervals, with a monocular microscope and Neubauer chamber. Also, the pH and titratable acidity exp...

Predictive microbiology is an interesting tool that allows evaluating the behavior of biomass and metabolites in different culture media, providing multiple benefits, whether scientific or industrial, for these and other reasons the objective of this research was to evaluate applied sigmoidal kinetic models to the growth of Saccharomyces boulardii in milk. For this purpose, flasks were prepared with 200 mL of fresh cow's milk, previously sterilized at 121 ° C x 15 min, then the strains were inoculated at a temperature of 37 ° C and incubated at the same temperature under constant shaking of 20 revolutions per minute (rpm) in a water bath with shaking, for 7 h; To construct the curves and obtain the growth constants, colony-forming units were counted per milliliter (cfu / ml) at one-hour intervals, with a monocular microscope and Neubauer chamber. Also, the pH and titratable acidity exp...

The present study, had the purpose of developing a fermented non-dairy probiotic drink based on tarwi, for this purpose the legume was unmarked, and then obtained Tarwi Vegetable Extract (EVQ) by blending it, then proceeded to make mixtures with sucrose (6 and 12%) and inoculum of Saccharomyces boulardii (2 and 4%) thus obtaining a total of 4 treatments (A1 - A4), the inoculation was performed at 37 ° C with constant agitation at 20 RPM for a period of 24 hours; where at three-hour intervals readings of the biomass increase were made with a microscope and a neubauer chamber expressed in (cfu / ml) at intervals of 3 hours, curves and kinetic parameters of microbial growth were constructed with the mathematical model of Gompertz, a monitoring of ° Brix, density, pH, and% of acidity was carried out, a linear regression analysis was applied; finally the adjustment of the mathematical model...

The objective of this research work was to evaluate the antimicrobial effect of 2 oil sources against Staphylococcus aureus and Fecal Coliforms. For the oil extraction, the steam drag method was applied where 5000g of sample was used (muña, Eucalyptus leaves), in which the yield presented: muña 50ml = 0.9268%, eucalyptus 52ml = 0.9717%, a Physicochemical characterization whose result was: in muña oil: peroxide index: 0.75 (Meq / Kg), Iodine index: 6.87 (IV), Acidity index: 1.78 (% FFA), Refractive index: 1.486 (n), density: 0.898 (Kg / L). In eucalyptus leaves: peroxide index: 0.68 (Meq / Kg), Iodine index: 8.08 (IV), Acidity index: 1.82 (% FFA), Refractive index: 1.495 (n), density: 0.845 (Kg / L). Inhibition halos were determined in millimeters (mm), with muña oil in dilutions at 25, 50 and 75% against Fecal Coliforms, where it was at 25%: 9.7950mm, 50%: 10.7467mm, 75%: 13.2700 mm,...

The present study, had the purpose of developing a fermented non-dairy probiotic drink based on tarwi, for this purpose the legume was unmarked, and then obtained Tarwi Vegetable Extract (EVQ) by blending it, then proceeded to make mixtures with sucrose (6 and 12%) and inoculum of Saccharomyces boulardii (2 and 4%) thus obtaining a total of 4 treatments (A1 - A4), the inoculation was performed at 37 ° C with constant agitation at 20 RPM for a period of 24 hours; where at three-hour intervals readings of the biomass increase were made with a microscope and a neubauer chamber expressed in (cfu / ml) at intervals of 3 hours, curves and kinetic parameters of microbial growth were constructed with the mathematical model of Gompertz, a monitoring of ° Brix, density, pH, and% of acidity was carried out, a linear regression analysis was applied; finally the adjustment of the mathematical model...

The objective of this research work was to evaluate the antimicrobial effect of 2 oil sources against Staphylococcus aureus and Fecal Coliforms. For the oil extraction, the steam drag method was applied where 5000g of sample was used (muña, Eucalyptus leaves), in which the yield presented: muña 50ml = 0.9268%, eucalyptus 52ml = 0.9717%, a Physicochemical characterization whose result was: in muña oil: peroxide index: 0.75 (Meq / Kg), Iodine index: 6.87 (IV), Acidity index: 1.78 (% FFA), Refractive index: 1.486 (n), density: 0.898 (Kg / L). In eucalyptus leaves: peroxide index: 0.68 (Meq / Kg), Iodine index: 8.08 (IV), Acidity index: 1.82 (% FFA), Refractive index: 1.495 (n), density: 0.845 (Kg / L). Inhibition halos were determined in millimeters (mm), with muña oil in dilutions at 25, 50 and 75% against Fecal Coliforms, where it was at 25%: 9.7950mm, 50%: 10.7467mm, 75%: 13.2700 mm,...