Abstract
In Mexico City, a daily generation of 12404 t of municipal solid waste was registered in 2022. Approximately 1374 t of organic
and sediments)
matter are received at the Bordo Poniente Composting Plant (BPCP, West Rim Composting Plant) for transformation into compost.
S.A. Medina-Moreno, S. Huerta-Ochoa, C.A. Lucho-Constantino, L. Aguilera-Vázquez, A. Jiménez-
BPCP is likely the largest composting facility in Latin America. A total of 15 samples were collected over a three-year period
González y M. Gutiérrez-Rojas
after its opening in 2012. The samples were then subjected to analysis to ascertain their moisture content, pH, reducing sugar
259 Crecimiento, sobrevivencia y adaptación de Bifidobacterium infantis a condiciones ácidas
content, C/N ratio, and maximum CO2 production rate. All the analyzed samples were found to meet the requisite criteria for
stable compost. The polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) method was employed to
(Growth, survival and adaptation of Bifidobacterium infantis to acidic conditions)
identify the bacterial and fungal communities present in the samples. The descriptive analysis revealed the presence of seven
L. Mayorga-Reyes, P. Bustamante-Camilo, A. Gutiérrez-Nava, E. Barranco-Florido y A. Azaola-
bacteria and three fungi in all the compost samples coming from the rainy and dry seasons; thereby generating basic knowledge
Espinosa
of the microbiota composition suitable for the composting process. Additionally, some of the identified microorganisms have
265 Statistical approach to optimization of ethanol fermentation by Saccharomyces cerevisiae in the
biotechnological potential for application in different industrial sectors. The data obtained are highly relevant and remain so
despite the time elapsed since the sampling. They shed light on the microbial dynamics during the composting process, with a
presence of Valfor® zeolite NaA
broad approach (bacteria and fungi). Most of previous studies have only focused on one of these taxonomic categories, which
(Optimización estadística de la fermentación etanólica de Saccharomyces cerevisiae en presencia de
misses a lot of information on the complex syntrophic relationships that may occur. The complexity and size of the composting
plant studied is another element of great interest.
zeolita Valfor® zeolite NaA)
Keywords: Bacterial and fungal communities, compost, compost stability, DGGE-PCR, nested PCR.