Bibliographic citations
Chou, J., (2023). Evaluación de métodos de identificación “high throughput” de microorganismos contaminantes de cerveza para una cervecería artesanal [Universidad Peruana Cayetano Heredia]. https://hdl.handle.net/20.500.12866/14764
Chou, J., Evaluación de métodos de identificación “high throughput” de microorganismos contaminantes de cerveza para una cervecería artesanal []. PE: Universidad Peruana Cayetano Heredia; 2023. https://hdl.handle.net/20.500.12866/14764
@misc{renati/910967,
title = "Evaluación de métodos de identificación “high throughput” de microorganismos contaminantes de cerveza para una cervecería artesanal",
author = "Chou Luy, Jose Leonardo",
publisher = "Universidad Peruana Cayetano Heredia",
year = "2023"
}
The craft brewery is a market that has grown 20% annually since 2019. To meet market demand, breweries have developed new styles of beer, with less bitterness, less CO2, alcohol (even non-alcoholic beer). These factors, the bitterness, produced by the humolones (alpha lupulic acids) that have a perforin effect on bacteria, the alcohol (bacteriostatic), the low concentration of CO2, reduce the natural protection of the beer against the proliferation of microorganisms that deteriorate the beer. It is defined that beer deteriorates by acquiring flavors foreign to the original design, mainly the production of lactic acid by bacteria, or over-attenuation by yeasts foreign to the main culture. This effect has been reported in the literature for the last five years. Contamination of a batch substantially affects the brewery's revenue. To reduce the likelihood of microorganism contamination of beer, Microbial Quality Control is necessary. Traditional microbiological methods that use culture media and microbiological tests require 5-14 days to generate a result, affecting the productivity of a market whose lots are small and have very high value. There are new methods based on methodologies such as Proteomics and Molecular Biology to carry out Microbiological Quality Control in Breweries that take less time. This work analyzes the cost/effectiveness of new Microbiological Quality Control methods based on Proteomics, Molecular Biology methods compared to microbiology based on culture methods to select the most suitable one to be used by craft breweries. Likewise, the impact of including Microbiological Quality Control in the production of craft beer is analyzed, considering the unit costs and the benefit of avoiding beer loss due to microbial contamination, with the PCR Quality Control analysis being the one with the 4 lowest cost. benefit and the one that generates the least increase in costs per liter of beer produced PCR > MALDI-TOF > MICROBIOLOGY BASED ON CULTURE MEDIA. SEQUENCING > The investment in PCR for Microbiological Quality Control, considering the purchase of the equipment, is S/. 0.97/liter. This result would increase the sale price from 15.25 Soles/liter (without VAT) to S/. 16.12 per liter. This method proves to be effective and economical to carry out Microbiological Quality Control in a craft brewery.
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