RT Journal Article T1 Effect of Sample Collection (Manual Expression vs. Pumping) and Skimming on the Microbial Profile of Human Milk Using Culture Techniques and Metataxonomic Analysis A1 Rodríguez-Cruz, Maricela A1 Alba Rubio, Claudio A1 Aparicio, Marina A1 Checa, María Ángeles A1 Fernández, Leonides A1 Rodríguez Gómez, Juan Miguel AB Human milk microbiota is a unique bacterial community playing a relevant role in infant health, but its composition depends on different factors (woman health, lactation stage, and geographical lactation). However, information is lacking regarding some other factors that may affect the bacterial community of human milk. In this study we aimed to study the impact of the sample collection method and the skimming procedure using culture-dependent and culture-independent techniques to study the human milk microbial profile. One set of milk samples was provided by women (n = 10) in two consecutive days; half of the samples were collected the first day by manual expression and the other half on the second day by pumping. The rest of the participants (n = 17) provided milk samples that were fractionated by centrifugation; the bacterial profiles of whole milk and skimmed milk were compared by culture techniques in 10 milk samples, while those of whole milk, fat and skimmed milk were subjected to metataxonomic analysis in seven samples. Globally, the results obtained revealed high interindividual variability but that neither the use of single-use sterile devices to collect the sample nor the skimming procedure have a significant impact of the microbial profile of human samples. PB MDPI SN 2076-2607 YR 2020 FD 2020-08-21 LK https://hdl.handle.net/20.500.14352/101064 UL https://hdl.handle.net/20.500.14352/101064 LA eng NO Rodríguez-Cruz, M., Alba, C., Aparicio, M., Checa, M. Á., Fernández, L., & Rodríguez, J. M. (2020). Effect of sample collection (Manual expression vs. pumping) and skimming on the microbial profile of human milk using culture techniques and metataxonomic analysis. Microorganisms, 8(9), 1-19. https://doi.org/10.3390/MICROORGANISMS8091278 NO Ministerio de Economía y Competitividad (AGL2016-75476-R y PID2019-105606RB-I00) DS Docta Complutense RD 9 abr 2025