Microbiological quality of the indoor air of the central market of Cajamarca - Peru

Vallejos D.C.; Palomino N.R.; Peña M.S.; Cerna J.F. · Proceedings of the LACCEI international Multi-conference for Engineering, Education and Technology (2021) · DOI: 10.18687/laccei2021.1.1.335

Resumen

Markets in Latin America are a center of conglomeration of people, these being in many occasions centers of dispersal of pathogens as has been seen in different research works and in the various media today. The objective of the investigation was to determine the microbiological quality of the indoor air of the Central Market of Cajamarca-Peru, in order to demonstrate if there is microbiological contamination. To meet the objective, indoor air monitoring was carried out, using the standard Hycon microbiological sampler, which sucks volumes of air; impregnating the aeorophilic microorganisms in the grids of the tryptic soy agar strips. The monitoring was carried out in the morning shift between the hours of 10.00 am. at 1.00 pm which are the busiest by the population. A total of 50 samples were taken. For this, five points were designated within the central market, distributed as follows in P-1 (meats), P-2 (juices), P-3 (fruits), P-4 (meals) and P-5 (crafts and groceries). These samples were taken for 5 days in February 2020, one month before the start of the pandemic in Peru. The Spanish standard (UNE 100012), establishes some air quality standards in indoor environments, with a limit of 800 CFU/m3. Obtaining as a result in each sampling point for the five days an average of: P-1, 859 CFU/m3; P-2, 786 CFU/m3; P-3 767 CFU/m3; P-4 830 CFU/m3 and P-5 762 CFU/m3. Also a general result with an average of 801 CFU/m3, during the five days of monitoring. Concluding that the value obtained exceeds the quality standard of the UNE standard.

Instituciones: Universidad Privada del Norte