Bacterial communication in foods / / Marco Gobbetti, Raffaella Di Cagno

• Record Nr.: UNINA9910437820103321
• Autore: Gobbetti Marco
• Pubbl/distr/stampa: New York, : Springer, c2013
• ISBN: 1-283-90922-7; 1-4614-5656-8
• Edizione: [1st ed. 2013.]
• Descrizione fisica: 1 online resource (84 p.)
• Collana: SpringerBriefs in food, health, and nutrition
• Altri autori (Persone): Di CagnoRaffaella
• Disciplina: 613
• Soggetti: Food - Microbiology; Bacteriology
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Description based upon print version of record.
• Nota di bibliografia: Includes bibliographical references and index.
• Nota di contenuto: 1. The Language -- 2. The Phenotypes -- 3. The Behavior in Foods -- 4. The Probiotic Message -- 5. The New Perspective.
• Sommario/riassunto: It is generally assumed that microorganisms synthesize, release, detect and respond to small signaling hormone-like molecules. These molecules are used for a process termed “quorum sensing” (QS), a phenomenon that enables bacteria to sense when the minimal number of cells, or “quorum,” is achieved for a concerted response to be initiated. Words such as “language” and “behavior” are frequently used to depict QS in the literature. More simply put, language and cross-talk between bacteria, and between bacteria and animal or plant hosts, determines the behavior (e.g., beneficial or pathogenic effects) of bacteria. Currently, the major concern is to understand and decode this language. Overall, bacterial cross-talk was mainly studied on environmental, plant, and human pathogenic bacteria. Few studies considered food-related lactic acid bacteria. The cross-talk between bacteria influences the behavior and, in turn, the environmental adaptation and phenotypes. Therefore, it is understood that bacterial cross-talk has important applicative repercussions. The language spoken between bacteria populating the same food ecosystem may condition the phenotypic traits of starter lactic acid bacteria and, consequently, their performance. This Brief aims to define the basis of cell-to-cell signalling in food fermentation and will highlight: (i) ; microbiology, nutritional, chemical and functional aspects; (ii) functional properties due to microbial adaptation to the gastrointestinal tract; (iii) principal phenotypes under control of QS circuitries; (iv) quorum quenching. This Brief will be the first reference on this topic and it will highlight the main results for a more productive industrial application. Draft content 1. Signals of food related Gram-negative and Gram-positive bacteria The chapter will describe the different signaling languages used by Gram-negative bacteria (N-acyl-L-homoserine lactones) and Gram-positive bacteria (based on the synthesis of post-translationally modified peptides) and the universal chemical lexicon, shared by both Gram-positive and -negative bacteria (autoinducer-2 through the activity of the LuxS enzyme). 2. Phenotypes related to quorum sensing The chapter will describe the bacterial phenotypes, such as virulence, biofilm maturation, bacteriocin synthesis, and secondary metabolite production under control of QS circuitries. 3. Cell-to-cell signalling in fermented food: sourdough The chapter will describe the language spoken between bacteria populating the same food ecosystem (sourdough) and will provide an overview of the conditioned phenotypic traits of starter lactic acid bacteria and, consequently, their performance. 4. Cell-to-cell signalling in fermented food: yoghurt The chapter will describe the language spoken between bacteria populating the same food ecosystem (yoghurt) and will provide an overview of the conditioned phenotypic traits of starter lactic acid bacteria and, consequently, their performance. 5. Probiotic message at the intra-, inter-species and inter-kingdom level The chapter will describe the mechanisms that regulate the interaction between microorganism and host, and the capacity of the microorganism to adapt to environment. Particular reference will also be made to: (i) pathogen inhibition and restoration of microbial homeostasis through microbe-microbe interactions; (ii) enhancement of epithelial barrier function; and (iii) modulation of immune responses. 6. New Perspectives of quorum sensing This chapter will provide an overview of the future perspective regarding quorum sensing, showing that bacterial cross-talk may have important applicative repercussions. It will highlight the interference on the language of QS, which is defined as quorum quenching (QQ). Increasing translation of the bacterial cross-talk has shown that in some environmental circumstances, quenching of the language may occur.

Diário de uma Miúda Doida por Cavalos

• Record Nr.: UNINA9910149561103321
• Autore: Kahler Katrina
• Pubbl/distr/stampa: Chicago : , : How To Help Children, , 2018; ©2018
• ISBN: 1-5071-0202-X
• Edizione: [1st ed.]
• Descrizione fisica: 1 online resource (75 pages)
• Altri autori (Persone): SousaElvira
• Lingua di pubblicazione: Portoghese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Nota di contenuto: Intro -- Página dos Direitos Autorais -- Dedicatória -- A minha amiga Ali e a sua primeira pónei -- Eu e a minha pónei linda -- Dando banho à Sparkle -- Os cavalos a pastarem no cercado -- Cavalo desenhado pelo meu Pai -- | ele é o artista da família! -- O meu gato Soxy -- A minha fotografia favorita com cavalos ☺ -- O pintado (malhado) da Kate - o Nugget -- Gosto tanto de cavalos! -- O tipo de vedação que nós precisamos! -- Eu na moto do Nate. | É muito mais assustador do que andar a cavalo!!! -- A Shelley com a Millie -- Estou muito preocupada com a Sparkle!!!.
• Sommario/riassunto: Lê o diário da Abbie e segue as suas aventuras com a sua primeira pónei, a Sparkle, uma puro-sangue lindíssima. Sim, ela é uma miúda doida por cavalos e quando se torna dona da Sparkle...todos os seus sonhos se tornam realidade."Quando vi a Sparkle pela primeira vez a galopar no cercado, soube logo que ela ia ser minha!.