Use of antibody‐linked probes for immuno‐location of microorganisms in food systems
作者:
SharonM. Johnson,
EmmaY. Parsons,
SandraC. Stringer,
ChristineE. R. Dodd,
MichaelR. A. Morgan,
WillM. Waites,
期刊:
Food and Agricultural Immunology
(Taylor Available online 1996)
卷期:
Volume 8,
issue 4
页码: 239-248
ISSN:0954-0105
年代: 1996
DOI:10.1080/09540109609354923
出版商: Taylor & Francis Group
关键词: Antibody‐linked probes;immuno‐location;in situ detection;food
数据来源: Taylor
摘要:
The growth of microorganisms in foods is different from that in axenic liquid culture in laboratory media. In natural environments, including food, microorganisms generally grow in mixed culture and in close proximity to each other, as a result of which antagonistic or synergistic interactions can occur. In addition, most foods are solids, with the consequence that organisms are spatially fixed and will only grow at sites that provide the correct growth conditions. At different sites within foods there are differences in pH, oxygen concentration, nutrient level, water activity and also, in some foods, preservatives. This results in the establishment of a series of micro‐environments, only some of which will provide appropriate conditions for growth. Antibody‐linked probes can be used for the immuno‐location of microorganisms or their products in natural food systems to demonstrate the sites at which growth has occurred, and thereby suggest methods of reducing microbially produced spoilage. In this study, the use of antibodies raised against species of Pseudomonas, Brochothrix thermosphacta, and nisin produced by Lactococcus lactis are discussed.
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