Protective action of Lactobacillus kefir carrying S-layer protein against Salmonella enterica serovar Enteritidis

Golowczyc, Marina Alejandra; Mobili, Pablo; Garrote, Graciela Liliana; Abraham, Analía Graciela; Antoni, Graciela L. De

doi:10.1016/j.ijfoodmicro.2007.07.042

Cited by 188 publications

(192 citation statements)

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“…This enhances the intestinal persistence of the probiotic bacteria, and limits pathogen access to the epithelium (O'Hara & Shanahan, 2007). In general, the incubation of enteropathogens with probiotic strains having a high coaggregation potential decreases the adhesion of the pathogen to the intestinal mucus (Tuomola et al, 1999), as well as the invasive capacity of pathogens on enterocytes (Golowczyc et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

In vitro characterization of aggregation and adhesion properties of viable and heat-killed forms of two probiotic Lactobacillus strains and interaction with foodborne zoonotic bacteria, especially Campylobacter jejuni

Tareb

Bernardeau²,

Guéguen

et al. 2013

Journal of Medical Microbiology

113

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Bacterial aggregation and/or adhesion are key factors for colonization of the digestive ecosystem and the ability of probiotic strains to exclude pathogens. In the present study, two probiotic strains, Lactobacillus rhamnosus CNCM-I-3698 and Lactobacillus farciminis CNCM-I-3699, were evaluated as viable or heat-killed forms and compared with probiotic reference Lactobacillus strains (Lb. rhamnosus GG and Lb. farciminis CIP 103136). The autoaggregation potential of both forms was higher than that of reference strains and twice that of pathogenic strains. The coaggregation potential of these two beneficial micro-organisms was evaluated against several pathogenic agents that threaten the global safety of the feed/food chain: Escherichia coli, Salmonella spp., Campylobacter spp. and Listeria monocytogenes. The strongest coaggregative interactions were demonstrated with Campylobacter spp. by a coaggregation test, confirmed by electron microscopic examination for the two forms. Viable forms were investigated for the nature of the bacterial cell-surface molecules involved, by sugar reversal tests and chemical and enzymic pretreatments. The results suggest that the coaggregation between both probiotic strains and C. jejuni CIP 70.2 T is mediated by a carbohydrate-lectin interaction. The autoaggregation potential of the two probiotics decreased upon exposure to proteinase, SDS or LiCl, showing that proteinaceous components on the surface of the two lactobacilli play an important role in this interaction. Adhesion abilities of both Lactobacillus strains were also demonstrated at significant levels on Caco-2 cells, mucin and extracellular matrix material. Both viable and heat-killed forms of the two probiotic lactobacilli inhibited the attachment of C. jejuni CIP 70.2 T to mucin. In conclusion, in vitro assays showed that Lb. rhamnosus CNCM-I-3698 and Lb. farciminis CNCM-I-3699, as viable or heat-killed forms, are adherent to different intestinal matrix models and are highly aggregative in vitro with pathogens, especially Campylobacter spp., the most commonly reported zoonotic agent in the European Union. This study supports the need for further in vivo investigations to demonstrate the potential food safety benefits of Lb. rhamnosus CNCM-I-3698 and Lb. farciminis CNCM-I-3699, live or heat-killed, in the global feed/food chain.

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Section: Discussionmentioning

confidence: 99%

In vitro characterization of aggregation and adhesion properties of viable and heat-killed forms of two probiotic Lactobacillus strains and interaction with foodborne zoonotic bacteria, especially Campylobacter jejuni

Tareb

Bernardeau²,

Guéguen

et al. 2013

Journal of Medical Microbiology

113

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“…kefir caused a significant decrease in the cytopathic influence of Clostridium difficile toxins on eukaryotic cells. Golowczyc, Mobili, Garrote, Abraham, and De Antoni (2007) showed that certain strains of Lb. kefir and their S-layer proteins contributed to inhibition of the adhesion and/or invasion of Salmonella enterica serovar Enteritidis.…”

Section: Nutritional Characteristicsmentioning

confidence: 99%

A review: chemical, microbiological and nutritional characteristics of kefir

Arslan

2014

CyTA - Journal of Food

124

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Kefir, a mildly acidic fermented milk, is produced by the addition of lactic acid bacteria and yeasts to milk. The composition of kefir varies according to factors such as milk type and the microbiological composition of culture types (kefir grain and commercial starter culture). Kefir's distinctive flavour is a blend of lactic acid, ethanol, carbon dioxide and flavouring products, such as acetaldehyde and acetoin. The microorganisms in kefir produce vitamins, degrade protein and hydrolyse lactose, resulting in a highly nutritious and digestible foodstuff. The microbiological composition of kefir has been investigated using a wide range of microbiological and molecular approaches. The microbiological and chemical composition of kefir indicates that it is a very complex probiotic, with Lactobacillus species, generally the predominant microorganisms. Kefir is now increasingly being consumed in certain areas of the world, such as southwestern Asia, Europe, North America and Japan.Keywords: kefir; composition; nutrition; fermented milk product; microbiological properties El kéfir, una leche fermentada ligeramente agria se produce añadiendo bacterias ácido-lácticas (BAL) y levadura a la leche. La composición del kéfir cambia según los diferentes factores como: el tipo de leche, la composición microbiológica de los gránulos de kéfir y su cultivo. El kéfir posee un sabor distintivo gracias a la combinación de ácidos lácticos, etanol, dióxido de carbono y otros aditivos, como el acetaldehído y la acetoína. Los microorganismos en el kéfir producen vitaminas, crean degradación proteínica y provocan hidrólisis de lactosa. Por ese motivo, el kéfir se ha convertido en un alimento muy nutritivo y digestivo. La composición microbiológica del kéfir ha sido investigada utilizando varios enfoques microbiológicos y moleculares. La composición microbiológica y química del kéfir indica que se trata de un alimento probiótico muy complejo. Los Lactobacillus generalmente son conocidos como microorganismos dominantes en el kéfir. El consumo de kéfir está creciendo en algunas partes del mundo como en Asia, Europa, Norteamérica y Japón.

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“…Probiotics affect the host animal beneficially by both improving its intestinal balance and creating gut micro-ecological conditions that suppress harmful microorganisms like Campylobacters, Clostridium, Salmonella and Coliforms [5,15,19,26] , and by favouring the beneficial ones like Lactobacillus and Bifidobacterium. Kefir is claimed to act against the pathogens and to have some antiinflammatory activities [18,19] .…”

Section: Yeni̇ce çElebi̇ Yörük Uçar Sağlam Tunç Altunmentioning

confidence: 99%

“…It ensures the enhancement and development of beneficial bacteria. These bacteria inhabit at the intestinal mucosa and provide an easier clearance of pathogen microorganisms [3,5,15,17,19] .…”

Section: Introductionmentioning

confidence: 99%

Effect of Kefir upon the Performance, Intestinal Microflora and Histopathology of Certain Organs in Laying Hens

Yenice¹,

Çelebi²,

Yörük³

et al. 2014

Kafkas Univ Vet Fak Derg

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SummaryIn the current study, the effect of kefir upon the performance, intestinal microflora and histopathology of certain organs in laying hens was investigated. Totally, 108 Lohmann Brown layers, aged 24 weeks, were allocated randomly into three groups, as; Group C (control, n=36): no treatment, Group A (n=36): 10 cc, and Group B (n=36): 7.5 cc kefir per litre of water. Animals were fed for 10 weeks with basal diets. Livers showed moderate level of hydropic degeneration, some lipidosis and focal haemorrhages with high amounts of kefir (Group A). Fewer active follicles in the ovarium were also observed in this group. The egg yield was significantly (P<0.01) lower in Group A (89.40±0.91) than in Group C (92.50±0.83) and Group B (92.86±0.87). For the pH of large intestines, unlike the small ones, it was significantly changed (P<0.01) from basic to acidic milieu in kefir-treated groups. The titres of coliform (E. coli), aerobic (Lactobacillus spp.), and anaerobic bacteria (Peptostreptococcus spp.) were significantly decreased (P<0.05 to P<0.001) with increased intake for both intestinal tracts. We conclude that; i) high kefir intake could unfavourably impair the digestive organ structures, ii) the supplementations led to a marked decrease in the large intestinal pH and microbiological load of the intestines, and iii) high kefir level markedly decreased the egg yield, unlike the low concentration as leading to a considerable improvement from the 6 th weeks onwards. Keywords: Kefir, Laying hen, Microbiology, Pathology, Probiotic Yumurtacı Tavuklarda Kefirin Performans, Barsak Mikroflorası ve Bazı Organların Histopatolojisi Üzerine Etkisi ÖzetMevcut araştırmada, yumurtacı tavuklarda kefirin performans, barsak mikroflorası ve bazı organların histopatolojisi üzerine etkisi araştırıldı. 24 haftalık toplam 108 adet Lohmann Brown yumurtacı tavuk; Grup K (kontrol, n=36), Grup A (n=36): 10 cc ve Grup B (n=36): 7.5 cc kefir/L su olarak rastgele 3 gruba ayrıldı. Hayvanlar 10 hafta süreyle bazal rasyonla beslendi. Yüksek kefir miktarı (Grup A), karaciğerlerde orta düzey hidropik dejenerasyon, belli düzeyde lipidosis ve fokal hemorajiler oluşturdu. Ayrıca, bu grupta ovaryumdaki aktif follikül sayısının daha az olduğu gözlendi. Grup A'daki yumurta verimi (89.40±0.91), Grup C (92.50±0.83) ve Grup B'dekinden (92.86±0.87) önemli düzeyde (P<0.01) daha düşük bulundu. Kefir uygulanan gruplardaki kalın bağırsak pH'sı, ince bağırsakların aksine, bazikten asidik ortama doğru önemli düzeyde (P<0.01) değişti. Koliform (E. coli), aerobik (Lactobacillus spp.), ve anaerobik bakteri (Peptostreptococcus spp.) titreleri artan probiyotik alımıyla birlikte önemli düzeyde (P<0.05 -P<0.001) azaldı. Sonuç olarak; i) yüksek kefir alımının sindirim organı yapılarını olumsuz yönde etkileyebildiği, ii) katkıların kalın bağırsak pH'sını ve bağırsakların mikrobiyolojik yükünü önemli düzeyde azalttığı, ve iii) yüksek kefir düzeyinin yumurta verimini önemli düzeyde azaltmasına karşın, düşük konsantrasyonun 6. haftadan sonra belli oranda artırdığı kanısına va...

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Protective action of Lactobacillus kefir carrying S-layer protein against Salmonella enterica serovar Enteritidis

Cited by 188 publications

References 43 publications

In vitro characterization of aggregation and adhesion properties of viable and heat-killed forms of two probiotic Lactobacillus strains and interaction with foodborne zoonotic bacteria, especially Campylobacter jejuni

In vitro characterization of aggregation and adhesion properties of viable and heat-killed forms of two probiotic Lactobacillus strains and interaction with foodborne zoonotic bacteria, especially Campylobacter jejuni

A review: chemical, microbiological and nutritional characteristics of kefir

Effect of Kefir upon the Performance, Intestinal Microflora and Histopathology of Certain Organs in Laying Hens

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