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Multiple-Pass High Pressure Homogenization of Milk for the Development of Pasteurization-like Processing Conditions.
MedLine Citation:
PMID:  23190052     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Multiple-pass UHPH was used for reducing microbial population of both indigenous spoilage microflora in whole raw milk and a baroresistant pathogen (Staphylococcus aureus) inoculated in whole sterile milk to define pasteurization-like processing conditions. Response surface methodology was followed and multiple response optimization of UHPH operating pressure (OP) (100, 175, 250 MPa) and number of passes (N) (1-5) was conducted through overlaid contour plot analysis. Increasing OP and N had a significant effect (P <0.05) on microbial reduction of both spoilage microflora and S. aureus in milk. Optimized UHPH processes (five 202-MPa passes; four 232-MPa passes) defined a region where a 5- log(10) reduction of total bacterial count of milk and a baro-resistant pathogen are attainable, as a requisite parameter for establishing an alternative method of pasteurization. Multiple-pass UHPH optimized conditions might help producing safe milk without the detrimental effects associated with thermal pasteurization. © 2012 The Authors Letters in Applied Microbiology © 2012 The Society for Applied Microbiology.
Authors:
H Ruiz-Espinosa; G G Amador-Espejo; M E Barcenas-Pozos; J O Angulo-Guerrero; H S Garcia; J Welti-Chanes
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-29
Journal Detail:
Title:  Letters in applied microbiology     Volume:  -     ISSN:  1472-765X     ISO Abbreviation:  Lett. Appl. Microbiol.     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-29     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8510094     Medline TA:  Lett Appl Microbiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2012 The Authors Letters in Applied Microbiology © 2012 The Society for Applied Microbiology.
Affiliation:
Benemérita Universidad Autónoma de Puebla, Facultad de Ingeniería Química, Puebla, México.
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