RT Journal Article
T1 Cannabis resin in the region of Madrid: Adulteration and contamination
A1 Pérez-Moreno, Manuel
A1 Pérez-Lloret, Pilar
A1 González Soriano, Juncal Milagros
A1 Santos Álvarez, Inmaculada
AB The aim of this study is to analyze the adulteration and contamination of cannabis resin obtained on the streets of Madrid, in order to establish whether it is suitable for human consumption. A total of 90 samples obtained through street vending in the Region of Madrid (CAM) were analyzed. Our results showed a direct relationship between the shape of the samples (acorn or ingot) and the presence of foreign elements, adulterants and microbiological contamination. Foreign elements were found in 64.7% of the ingot-shaped samples and in 30.2% of the acorn-shaped samples (p<0.01); 25% of the samples were deliberately adulterated, 66.7% of which had an ingot shape. With regard to microbiological contamination, 93% of acorns were contaminated by E. coli, compared to 29.4% of ingots (p<0.0001). In addition, all samples with fecal odor were acorns and were contaminated by E. coli. Ten per cent of the samples were contaminated by Aspergillus; of these, 66.7% had the shape of an acorn. Overall, our results showed that most (88.3%) of the hashish samples were not suitable for consumption. This percentage was significantly higher (p <0.0001) in acorn than in ingot samples (100% vs. 58.8%). Hence, illegal street vending of hashish constitutes a public health issue
PB Elsevier
SN 0379-0738
YR 2019
FD 2019
LK https://hdl.handle.net/20.500.14352/97121
UL https://hdl.handle.net/20.500.14352/97121
LA eng
NO Pérez-Moreno M, Pérez-Lloret P, González-Soriano J, Santos-Álvarez I. Cannabis resin in the region of Madrid: Adulteration and contamination. Forensic Sci Int 2019;298:34-38.
NO Credit authorship contribution statementM. Pérez-Moreno: Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Resources, Writing - original draft, Validation, Visualization. P. Pérez-Lloret: Conceptualization, Data curation, Formal analysis, Supervision, Validation. J. González-Soriano: Conceptualization, Data curation, Visualization, Writing - review & editing. I. Santos-Álvarez: Conceptualization, Data curation, Formal analysis, Resources, Validation, Visualization, Writing - original draft, Writing - review & editing.
DS Docta Complutense
RD 22 mar 2026