High pressure inactivation kinetics of Saccharomyces cerevisiae ascospores in orange and apple juices

High pressure inactivation kinetics (D and z values) of Saccharomyces cerevisiae ascospores were determined in fruit juices and a model juice buffer at pH 3.5 to 5.0. Approximately 0.5 to 1.0 x 10(6) ascospores/mL were pressurized at 300 to 500 MPa in juice or buffer. D-values ranged from 8 sec to 1...

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Veröffentlicht in:Journal of food science 1999-05, Vol.64 (3), p.533-535
Hauptverfasser: Zook, C.D, Parish, M.E, Braddock, R.J, Balaban, M.O
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container_title Journal of food science
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creator Zook, C.D
Parish, M.E
Braddock, R.J
Balaban, M.O
description High pressure inactivation kinetics (D and z values) of Saccharomyces cerevisiae ascospores were determined in fruit juices and a model juice buffer at pH 3.5 to 5.0. Approximately 0.5 to 1.0 x 10(6) ascospores/mL were pressurized at 300 to 500 MPa in juice or buffer. D-values ranged from 8 sec to 10.8 min at 500 and 300 MPa, respectively. The range for z-values was 115 to 121 MPa. No differences (P greater than or equal to 0.05) in D (at constant pressure) or z-values among buffers or juices at any pH were determined, indicating little influence of pH in this range and absence of protective or detrimental effects of juice constituents.
doi_str_mv 10.1111/j.1365-2621.1999.tb15078.x
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source Wiley Online Library Journals Frontfile Complete
subjects apple juice
ascospores
Beverages
Biological and medical sciences
chemical composition
Food industries
Food microbiology
Food science
food spoilage
Fruit and vegetable industries
Fruits
Fundamental and applied biological sciences. Psychology
high pressure
Kinetics
orange juice
pressure
Saccharomyces cerevisiae
sterilizing
temperature
treatment
Yeast
title High pressure inactivation kinetics of Saccharomyces cerevisiae ascospores in orange and apple juices
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