Response of Saccharomyces cerevisiae to the combined action of ultrasound and low weight chitosan
The resistance of Saccharomyces cerevisiae to the action of ultrasound (600 W, 20 kHz, 95.2 μm wave amplitude) at 45 °C in Sabouraud broth (pH 5.6) containing 1000 ppm low weight chitosan was analyzed. Preincubation of the inoculated systems 30 and 90 min prior to sonication was also evaluated. Addi...
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| Lenguaje: | Inglés |
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2005
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| Acceso en línea: | Registro en Scopus DOI Handle Registro en la Biblioteca Digital |
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| LEADER | 09596caa a22009857a 4500 | ||
|---|---|---|---|
| 001 | PAPER-22166 | ||
| 003 | AR-BaUEN | ||
| 005 | 20230518205342.0 | ||
| 008 | 190411s2005 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-4444267119 | |
| 024 | 7 | |2 cas |a chitosan, 9012-76-4 | |
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 030 | |a FOOCE | ||
| 100 | 1 | |a Guerrero, S. | |
| 245 | 1 | 0 | |a Response of Saccharomyces cerevisiae to the combined action of ultrasound and low weight chitosan |
| 260 | |c 2005 | ||
| 270 | 1 | 0 | |m Guerrero, S.; Departamento de Industrias, Facultad de Ciencias Exactas/Nat., Universidad de Buenos Aires, 1428 Buenos Aires, Argentina; email: sguerrero@di.fcen.uba.ar |
| 506 | |2 openaire |e Política editorial | ||
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| 504 | |a García, M.L., Burgos, J., Sanz, B., Ordóñez, J., Effect of heat and ultrasonic waves on the survival of two strains of Bacillus subtilis (1989) Journal of Applied Bacteriology, 67, pp. 619-628 | ||
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| 504 | |a Guerrero, S., Tognon, M., Alzamora, S.M., Ultrasound and natural antimicrobials: Inactivation of Saccharomyces cerevisiae by the combined treatment (2001), Presented at 2001 Annual Institute of Food Technologists Meeting, New Orleans (paper no. 88D-19); Hauben, K.J.A., Wuytack, E.Y., Soontjens, C.C.F., Michiels, C.W., High-pressure transient sensitization of Escherichia coli to lysozyme and nisin disruption of outer-membrane permeability (1996) Journal of Food Protection, 59, pp. 350-355 | ||
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| 504 | |a Pol, I.E., Mastwijk, H.C., Bartels, P.V., Smid, E.J., Pulsed-electric field treatment enhances the bactericidal action of nisin against Bacillus cereus (2000) Applied and Environmental Microbiology, 66, pp. 428-430 | ||
| 504 | |a Raso, J., Condon, S., Sala, J.F., Microbial inactivation by ultrasonic waves under pressure and heat (1997) Applied and Environmental Microbiology, 63, pp. 229-234 | ||
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| 520 | 3 | |a The resistance of Saccharomyces cerevisiae to the action of ultrasound (600 W, 20 kHz, 95.2 μm wave amplitude) at 45 °C in Sabouraud broth (pH 5.6) containing 1000 ppm low weight chitosan was analyzed. Preincubation of the inoculated systems 30 and 90 min prior to sonication was also evaluated. Addition of chitosan enhanced the inactivation by ultrasound. Incubating the yeast with chitosan prior to sonication increased the inactivation. After 30 min of exposure to chitosan, approximately 1-log cycle reduction of the yeast was obtained leading to a final reduction of more than three log cycles after 30 min of the ultrasonic treatment. Ninety minutes of exposure to chitosan resulted in little significant change in yeast reduction. Transmission electron microphotographs of the cells showed possible different action mechanisms of chitosan depending on whether systems were preincubated or not. Experimental data were modeled by using the modified Gompertz equation and Weibull distribution of resistances. © 2004 Elsevier Ltd. All rights reserved. |l eng | |
| 536 | |a Detalles de la financiación: Universidad de Buenos Aires | ||
| 536 | |a Detalles de la financiación: Consejo Nacional de Investigaciones Científicas y Técnicas | ||
| 536 | |a Detalles de la financiación: We acknowledge the financial support from Universidad de Buenos Aires, CONICET and ANPyCT of the República Argentina. We also wish to thank Dr. Arquı́medes Bolondi and Ms. Blanca Garcı́a for their technical assistance at the C.I.C.V. Electron Microscopy Center INTA, Argentina. | ||
| 593 | |a Departamento de Industrias, Facultad de Ciencias Exactas/Nat., Universidad de Buenos Aires, 1428 Buenos Aires, Argentina | ||
| 690 | 1 | 0 | |a CHITOSAN |
| 690 | 1 | 0 | |a GOMPERTZ EQUATION |
| 690 | 1 | 0 | |a INACTIVATION |
| 690 | 1 | 0 | |a S. CEREVISIAE |
| 690 | 1 | 0 | |a ULTRASOUND |
| 690 | 1 | 0 | |a ULTRASTRUCTURAL CHANGES |
| 690 | 1 | 0 | |a WEIBULL DISTRIBUTION |
| 690 | 1 | 0 | |a CHITOSAN |
| 690 | 1 | 0 | |a AMPLITUDE MODULATION |
| 690 | 1 | 0 | |a ARTICLE |
| 690 | 1 | 0 | |a CALCULATION |
| 690 | 1 | 0 | |a CELL SURVIVAL |
| 690 | 1 | 0 | |a CONTROLLED STUDY |
| 690 | 1 | 0 | |a FOOD PRESERVATION |
| 690 | 1 | 0 | |a FREQUENCY ANALYSIS |
| 690 | 1 | 0 | |a INCUBATION TIME |
| 690 | 1 | 0 | |a MOLECULAR WEIGHT |
| 690 | 1 | 0 | |a NONHUMAN |
| 690 | 1 | 0 | |a SACCHAROMYCES CEREVISIAE |
| 690 | 1 | 0 | |a TEMPERATURE MEASUREMENT |
| 690 | 1 | 0 | |a TRANSMISSION ELECTRON MICROSCOPY |
| 690 | 1 | 0 | |a ULTRASOUND |
| 690 | 1 | 0 | |a SACCHAROMYCES |
| 690 | 1 | 0 | |a SACCHAROMYCES CEREVISIAE |
| 650 | 1 | 7 | |2 spines |a PH |
| 700 | 1 | |a Tognon, M. | |
| 700 | 1 | |a Alzamora, S.M. | |
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