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Bacterial Communication in Foods
DAFTAR ISI
1 The Langguage 1
1.1 introduction 1
1.2 signals from bacteria 2
1.3 N-acyl-L-homoserine lactones 3
1.4 autoinducing peptides 9
1.5 luxs/autoinducer-2 13
1.5.1 the luxs paradigm 14
1.6 luxs/autoinducer-3 15
2 The Phenotypes 21
2.1 introduction 21
2.2 virulence 21
2.3 bioflm formation 24
2.4 bacteriocin synthesis 27
2.4.1 the regulatory operons and their regulated promoters 30
2.4.2 the peptide pheromone plantaricin A 32
3 The Behavior in foods 39
3.1 introduction 39
3.2 sourdough 39
3.2.1 cross-talk between sourdough lactic acid bacteria 40
3.2.2 the autoinducing peptide plnA from sourdough lactobacillus plantarum 45
3.3 yoghurt 48
3.3.1 cross-talk between streptococcus thermophilus and lactobacillus delbrueckii subsp. bulgaricus 49
3.3.2 the presumptive new langguage spoken by streptococcus thermophilus 50
3.4 other foods 52
3.4.1 meat spoilage and poisoning 52
3.4.2 raw vegetables as sources of quorum sensing inhibitors 55
4 The Probiotic Message 61
4.1 introduction 61
4.2 langguage-like exchange at intra and interspecies levels 62
4,3 language-like exchange at interkingdom level 64
5 The new perspective 71
5.1 introduction 71
5.2 antimicrobial therapy 71
5.3 selection of starters 72
5.4 food quality 73
5.5 novel biogenic compounds 74
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