The food industry uses chemical compounds to prevent the growth of bacteria and extend their shelf life. These substances are associated with toxic problems, the presence of chemical residues and antimicrobial resistance. Oregano essential oil has antimicrobial compounds such as thymol and carvacrol. The objective of the research was to evaluate the antimicrobial effect of oregano essential oil from the province of Concepción, Junín Region (Peru) against Listeria monocytogenes and Staphylococcus aureus. Oregano was taxonomically identified as O. vulgare. The essential oil was obtained by hydrodistillation and the profile of chemical compounds was determined by Gas Chromatography/Mass Spectrometry (GC-MS). The minimum inhibitory concentration (MIC) was determined by microdilution and the minimum bactericidal concentration (CMB) by agar planting Baird-Parker Agar was used for S. aureus a...

The food industry uses chemical compounds to prevent the growth of bacteria and extend their shelf life. These substances are associated with toxic problems, the presence of chemical residues and antimicrobial resistance. Oregano essential oil has antimicrobial compounds such as thymol and carvacrol. The objective of the research was to evaluate the antimicrobial effect of oregano essential oil from the province of Concepción, Junín Region (Peru) against Listeria monocytogenes and Staphylococcus aureus. Oregano was taxonomically identified as O. vulgare. The essential oil was obtained by hydrodistillation and the profile of chemical compounds was determined by Gas Chromatography/Mass Spectrometry (GC-MS). The minimum inhibitory concentration (MIC) was determined by microdilution and the minimum bactericidal concentration (CMB) by agar planting Baird-Parker Agar was used for S. aureus a...

The food industry uses chemical compounds to prevent the growth of bacteria and extend their shelf life. These substances are associated with toxic problems, the presence of chemical residues and antimicrobial resistance. Oregano essential oil has antimicrobial compounds such as thymol and carvacrol. The objective of the research was to evaluate the antimicrobial effect of oregano essential oil from the province of Concepción, Junín Region (Peru) against Listeria monocytogenes and Staphylococcus aureus. Oregano was taxonomically identified as O. vulgare. The essential oil was obtained by hydrodistillation and the profile of chemical compounds was determined by Gas Chromatography/Mass Spectrometry (GC-MS). The minimum inhibitory concentration (MIC) was determined by microdilution and the minimum bactericidal concentration (CMB) by agar planting Baird-Parker Agar was used for S. aureus a...

Evalúa el efecto combinado bactericida del aceite esencial del ajo (Allium sativum; AA) y orégano (Origanum vulgare; AO) frente a Listeria monocytogenes y Staphylococcus aureus en carne de res empacada al vacío y almacenada en refrigeración. Los aceites se obtuvieron mediante destilación por arrastre de vapor y el perfil de compuestos volátiles se obtuvo mediante Cromatografía de Gases/Espectrometría de Masas (GC/MS). Se determinó la Concentración Mínima Inhibitoria (CMI) y Concentración Mínima Bactericida (CMB) para ambos aceites esenciales, posteriormente la CMB de cada aceite obtenida se evaluó independientemente en filetes de carne de res empacados al vacío y almacenados a temperatura de refrigeración (4°C). Después se evaluó cuatro combinaciones de ambos aceites contra L. monocytogenes (L1: 2%AO+5%AA; L2: 4%AO+5%AA; L3: 2% AO +2.5%AA; L4: 4%AO+2.5%AA); y cuatro co...

The food industry uses chemical compounds to prevent the growth of bacteria and extend their shelf life. These substances are associated with toxic problems, the presence of chemical residues and antimicrobial resistance. Oregano essential oil has antimicrobial compounds such as thymol and carvacrol. The objective of the research was to evaluate the antimicrobial effect of oregano essential oil from the province of Concepción, Junín Region (Peru) against Listeria monocytogenes and Staphylococcus aureus. Oregano was taxonomically identified as O. vulgare. The essential oil was obtained by hydrodistillation and the profile of chemical compounds was determined by Gas Chromatography/Mass Spectrometry (GC-MS). The minimum inhibitory concentration (MIC) was determined by microdilution and the minimum bactericidal concentration (CMB) by agar planting Baird-Parker Agar was used for S. aureus a...

The present study aimed to detect the possible presence of enrofloxacin in guinea pigs slaughtered for human consumption in the province of Jauja, Junín Region, Peru. For the detection of enrofloxacin, samples of liver, kidney and diaphragm were taken from 200 guinea pigs from two slaughterhouses of Jauja. The detection of antibiotic residues was performed using the microbiological test of Growth Inhibition in the three samples, obtaining negative results in all of them. Then, 30 liver samples were selected at random and analysed by a commercial ELISA kits specific for enrofloxacin, obtaining 26.7% (8/30) positive samples with concentrations between 1.11 and 35.1 μg/kg. The results showed the presence of residues of enrofloxacin in concentrations allowed by sanitary regulations in guinea pigs intended for human consumption.

The present study aimed to detect the possible presence of enrofloxacin in guinea pigs slaughtered for human consumption in the province of Jauja, Junín Region, Peru. For the detection of enrofloxacin, samples of liver, kidney and diaphragm were taken from 200 guinea pigs from two slaughterhouses of Jauja. The detection of antibiotic residues was performed using the microbiological test of Growth Inhibition in the three samples, obtaining negative results in all of them. Then, 30 liver samples were selected at random and analysed by a commercial ELISA kits specific for enrofloxacin, obtaining 26.7% (8/30) positive samples with concentrations between 1.11 and 35.1 μg/kg. The results showed the presence of residues of enrofloxacin in concentrations allowed by sanitary regulations in guinea pigs intended for human consumption.