SIMPLIFIED CAPACITANCE MONITORING FOR THE DETERMINATION OF <i>CAMPYLOBACTER</i> SPP. GROWTH RATES

Akins, E. Deann; Rule, Patricia; Keener, Michelle R.; Sellers, Holly S.; Line, J. Eric; Simmons, Mustafa; Harrison, Mark A.; Hiett, Kelli L.

doi:10.1111/j.1745-4581.2008.00146.x

Cited by 2 publications

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“…El tiempo que se requiere para lograr este cambio exponencial es conocido como tiempo de detección (TD) y está en función del recuento (ufc/ml) en las muestras estudiadas (50) . Así, el cambio eléctrico puede ser correlacionado de forma indirectamente proporcional con el número de microorganismos (54) , siendo una herramienta eficaz en la generación de curvas de crecimiento de patógenos bacterianos (55) . (58) y Baranyi y…”

Section: Métodos Impedanciométricosunclassified

Estudio sobre el comportamiento de bacterias patógenas entéricas vehiculadas por alimentos

Escudero¹

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F-test: prueba F de Fischer. H: antígeno flagelar. K: antígeno capsular. L. monocytogenes: Listeria monocytogenes. LD10%: leche desnatada reconstituida al 10%. LMR: leche maternizada reconstituida. LREC: Laboratorio de Referencia de Escherichia coli. N (GEN al TD) : número de generaciones o duplicaciones de la población celular antes de llegar al tiempo de detección. N 0 : densidad de población celular a tiempo 0. N ii : inóculo de población 10 2 ufc/ml procedente de la dilución 10-6. N iv: inóculo de población 10 4 ufc/ml procedente de la dilución 10-4. N TD : densidad de población celular en el momento del tiempo de detección. O: antígeno somático.

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Section: Métodos Impedanciométricosunclassified

Estudio sobre el comportamiento de bacterias patógenas entéricas vehiculadas por alimentos

Escudero¹

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Bactometer System versus Traditional Methods for Monitoring Bacteria Populations in Salchichón during Its Ripening Process

Priego

Medina

Jordano

2011

Journal of Food Protection

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The performance of the Bactometer system (an impedimetric microbial monitoring system) compared with traditional methods (microbial colony counts) for monitoring bacterial populations (lactic acid bacteria [LAB], Enterobacteriaceae, and coliforms) was studied in 90 samples of an experimental salchichón (a type of Spanish ripened dry sausage) during its ripening process. The population quantitations were carried out with fresh sausage, semiripened sausage (14 days of ripening), and finished product (28 days of ripening). The results showed a high correlation between the traditional microbial colony count (in CFU per gram) and the impedance detection time: -0.98, -0.97, and -0.94 for coliforms, Enterobacteriaceae, and LAB, respectively (P < 0.01). Considering the results obtained with regard to the enumeration of populations of Enterobacteriaceae, coliforms, and LAB in salchichón during its ripening process, the advantages of impedance with respect to plate counts for monitoring the microbial dynamics of ripening processes are notable, especially in its time-saving aspects: between 19 and 21 h in the case of Enterobacteriaceae, between 7 and 20 h for coliforms, and between 32 and 46 h for LAB.

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SIMPLIFIED CAPACITANCE MONITORING FOR THE DETERMINATION OF CAMPYLOBACTER SPP. GROWTH RATES

Abstract: Capacitance monitoring is commonly used as an efficient means to gen-

Cited by 2 publications

References 9 publications

Estudio sobre el comportamiento de bacterias patógenas entéricas vehiculadas por alimentos

Estudio sobre el comportamiento de bacterias patógenas entéricas vehiculadas por alimentos

Bactometer System versus Traditional Methods for Monitoring Bacteria Populations in Salchichón during Its Ripening Process

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