Preliminary data on the antimicrobial effect of Cannabis sativa L. variety Futura 75 against food-borne pathogens in vitro as well as against naturally occurring microbial populations on minced meat during storage

  • Frédérique Pasquali | frederique.pasquali@unibo.it Department of Agricultural and Food Sciences, University of Bologna, Italy.
  • Marco Schinzari Department of Agricultural and Food Sciences, University of Bologna, Italy.
  • Alex Lucchi Department of Agricultural and Food Sciences, University of Bologna, Italy.
  • Mara Mandrioli Department of Agricultural and Food Sciences, University of Bologna, Italy.
  • Tullia Gallina Toschi Department of Agricultural and Food Sciences, University of Bologna, Italy.
  • Alessandra De Cesare Department of Agricultural and Food Sciences, University of Bologna, Italy.
  • Gerardo Manfreda Department of Agricultural and Food Sciences, University of Bologna, Italy.

Abstract

In the present study, the antimicrobial effect of Cannabis sativa Futura 75 was evaluated both in vitro against foodborne bacterial pathogens, and on food against naturally occurring microbial groups of minced meat stored for 8 days at 4°C. Ethanol extraction was performed on the grind of the inflorescence. After extraction, ethanol was completely evaporated and substituted by water. Serial dilutions of the extract, the grind and cannabidiol 99% were added to Nutrient Agar and spotted with Listeria monocytogenes, Salmonella Typhimurium, Escherichia coli and Staphylococcus spp. Regarding the evaluation on food, 50 mL of extract, characterised by CBD at concentration of 322,70 μg/mL, were added to 2.5 kg of minced beef meat. Meat was divided into aliquots and stored for 8 days at 4°C. At 0, 1, 2, 3, 4, 7, and 8 days, aerobic bacteria, enterobacteria, coliforms and E. coli were enumerated. All tested products were efficient against Gram +. In particular, extract corresponding to CBD concentration of 0.017 and 0.3 mg/mL were effective against L. monocytogenes and Staphylococcus spp. respectively. After 8 days of storage at 4°C, treated minced meat showed a bright red colour in comparison to a brownish control meat. Moreover, Enterobacteriaceae and coliforms were significantly reduced of 2.3 log CFU/g and 1.6 log CFU/g respectively in treated meat in comparison to the control. Although preliminary, the present study suggests the antimicrobial properties of the extract of Cannabis sativa both in vitro and in minced meat.

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Published
2020-08-19
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Original Articles
Keywords:
Cannabis sativa, antimicrobial effect, foodborne pathogenes pathogens, process hygiene, bovine minced meat
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How to Cite
Pasquali, F., Schinzari, M., Lucchi, A., Mandrioli, M., Toschi, T. G., De Cesare, A., & Manfreda, G. (2020). Preliminary data on the antimicrobial effect of <em>Cannabis sativa</em> L. variety Futura 75 against food-borne pathogens <em>in vitro</em&gt; as well as against naturally occurring microbial populations on minced meat during storage. Italian Journal of Food Safety, 9(2). https://doi.org/10.4081/ijfs.2020.8581