scholarly journals Potential Fate of Ingested Lactobacillus plantarum and Its Occurrence in Human Feces

2013 ◽  
Vol 80 (3) ◽  
pp. 1013-1019 ◽  
Author(s):  
Giselle Nobre Costa ◽  
Francismar Corrêa Marcelino-Guimarães ◽  
Gislayne Trindade Vilas-Bôas ◽  
Tiemi Matsuo ◽  
Lucia Helena S. Miglioranza

ABSTRACTLactobacillusplantarumhas been used in human clinical trials to promote beneficial effects in the immune system, to alleviate intestinal disorders, and to reduce the risk of cardiovascular disease. It is also involved in many fermentation processes in the food industry. However, information on the fate of ingestedL. plantarumis limited. In this study, 61 subjects received daily doses of fermented milk containing 2 × 1011cells ofL. plantarumLp115 for different periods of time. The target microorganism was monitored in the fecal microbiota via quantitative PCR (qPCR).L. plantarumwas detected and quantified in all of the subjects during the ingestion periods. The differences between theL. plantarumlevels at time zero and during all the different ingestion periods were statistically significant (P= 0.001). However, at 15 and 45 days after discontinuing supplementation, the number of lactobacilli was reduced to the baseline level (those at time zero). A longer period withL. plantarumin the diet did not result in increased levels of this bacterium in the stool, based on postconsumption evaluations (P= 0.001). The qPCR method was specific and sensitive forL. plantarumquantification in such a complex microbial environment as the gastrointestinal tract.

2013 ◽  
Vol 79 (7) ◽  
pp. 2182-2188 ◽  
Author(s):  
Junji Fujimoto ◽  
Koichi Watanabe

ABSTRACTWe developed a PCR-based method to detect and quantify viableBifidobacterium bifidumBF-1 cells in human feces. This method (PMA-qPCR) uses propidium monoazide (PMA) to distinguish viable from dead cells and quantitative PCR using a BF-1-specific primer set designed from the results of randomly amplified polymorphic DNA analysis. During long-term culture (10 days), the number of viable BF-1 cells detected by counting the number of CFU on modified MRS agar, by measuring the ATP contents converted to CFU, and by using PMA-qPCR decreased from about 1010to 106cells/ml; in contrast, the total number of (viable and dead) BF-1 cells detected by counting 4′,6-diamidino-2-phenylindolee (DAPI)-stained cells and by using qPCR without PMA and reverse transcription-qPCR remained constant. The number of viable BF-1 cells in fecal samples detected by using PMA-qPCR was highly and significantly correlated with the number of viable BF-1 cells added to the fecal samples, within the range of 105.3to 1010.3cells/g feces (wet weight) (r> 0.99,P< 0.001). After 12 healthy subjects ingested 1010.3to 1011.0CFU of BF-1 in a fermented milk product daily for 28 days, 104.5 ± 1.5(mean ± standard deviation [SD]) BF-1 CFU/g was detected in fecal samples by using strain-specific selective agar; in contrast, 106.2 ± 0.4viable BF-1 cells/g were detected by using PMA-qPCR, and a total of 107.6 ± 0.7BF-1 cells/g were detected by using qPCR without PMA. Thus, the number of viable BF-1 cells detected by PMA-qPCR was about 50 times higher (P< 0.01) than that detected by the culture-dependent method. We conclude that strain-specific PMA-qPCR can be used to quickly and accurately evaluate viable BF-1 in feces.


Sports ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 82
Author(s):  
Tatsuya Ishizu ◽  
Eri Takai ◽  
Suguru Torii ◽  
Motoko Taguchi

The aim of the present study was to clarify the influence of inulin and lactulose-fortified prebiotic food intakes on bone metabolism turnover among Japanese female athletes. The participants included 29 female athletes aged 18–25 years. They were requested to consume their habitual foods or drinks with one pack of prebiotic food every day for 12 weeks. Dietary intake, training time, body composition, blood sample, and fecal microbiota were assessed during this intervention period. Body composition, total energy intake, and training time of the participants revealed no significant changes during the intervention period. The occupation ratio of Bifidobacterium spp. was significantly increased at 3 and 4 weeks (18.0 ± 8.3% and 17.6 ± 8.5%, respectively) compared to that of pre-intervention (11.7 ± 7.3%) (p = 0.019 and p = 0.035, respectively). The serum TRACP-5b level was significantly decreased at 12 weeks (363 ± 112 mU/dL) compared to that at baseline (430 ± 154 mU/dL) (p = 0.018). These results suggest that the prebiotic food used in this study might have beneficial effects on bone health and gut microbial environment among female athletes. Further studies are warranted to identify the mechanism of the prebiotics–gut–bone axis.


2020 ◽  
Vol 16 (8) ◽  
pp. 1196-1208
Author(s):  
Ramin Ghodsi ◽  
Rahmat Nosrati

Background: Oils and fats are the densest sources of food energy among food groups. Vegetable oils are constituted predominantly of triglycerides. Due to the importance of edible oils in nutrition, food industry and human health, great attention has been paid to them in recent years. Some minor bioactive constituents in oils include phospholipids, tocols, sterols, carotenoid, chlorophyll, phenols, phylokynon and terpenes. Objective: The aim of the present study was to examine beneficial effects of minor compounds in edible oils on human health. Results: Minor compounds of edible oils that we use daily can produce remarkable results in the prevention and treatment of various diseases like diabetes, inflammation, hypertension, cancer, allergy and central nervous system disorders due to their antimicrobial, anti-cancer, anti-viral, anti-oxidative, anti-inflammation, anti-mutagenic, hypolipidemic, and hypoglycemic properties, among others. Conclusion: The results of this study showed that the presence of beneficial minor compounds in oils could have significant impact on the prevention and treatment of various diseases. Therefore, the type of consumed oil can play an important role in human health.


2020 ◽  
Vol 16 (6) ◽  
pp. 891-899 ◽  
Author(s):  
Wissam Zam

Probiotics are viable microorganisms widely used for their claimed beneficial effects on the host health. A wide number of researchers proved that the intake of probiotic bacteria has numerous health benefits which created a big market of probiotic foods worldwide. The biggest challenge in the development of these products is to maintain the viability of bacterial cells during the storage of the product as well as throughout the gastrointestinal tract transit after consumption, so that the claimed health benefits can be delivered to the consumer. Different approaches have been proposed for increasing the resistance of these sensitive microorganisms, including the selection of resistant strains, incorporation of micronutrients, and most recently the use of microencapsulation techniques. Microencapsulation has resulted in enhancing the viability of these microorganisms which allows its wide use in the food industry. In this review, the most common techniques used for microencapsulation of probiotics will be presented, as well as the most usual microcapsule shell materials.


2012 ◽  
Vol 78 (8) ◽  
pp. 2941-2948 ◽  
Author(s):  
M. Sekelja ◽  
I. Rud ◽  
S. H. Knutsen ◽  
V. Denstadli ◽  
B. Westereng ◽  
...  

ABSTRACTOne of the main challenges in understanding the composition of fecal microbiota is that it can consist of microbial mixtures originating from different gastrointestinal (GI) segments. Here, we addressed this challenge for broiler chicken feces using a direct 16S rRNA gene-sequencing approach combined with multivariate statistical analyses. Broiler feces were chosen because of easy sampling and the importance for pathogen transmission to the human food chain. Feces were sampled daily for 16 days from chickens with and without a feed structure-induced stimulation of the gastric barrier function. Overall, we found four dominant microbial phylogroups in the feces. Two of the phylogroups were related to clostridia, one to lactobacilli, and one toEscherichia/Shigella. The relative composition of these phylogroups showed apparent stochastic temporal fluctuations in feces. Analyses of dissected chickens at the end of the experiment, however, showed that the two clostridial phylogroups were correlated to the microbiota in the cecum/colon and the small intestine, while the upper gut (crop and gizzard) microbiota was correlated to the lactobacillus phylogroup. In addition, chickens with a stimulated gizzard also showed less of the proximate GI dominating bacterial group in the feces, supporting the importance of the gastric barrier function. In conclusion, our results suggest that GI origin is a main determinant for the chicken fecal microbiota composition. This knowledge will be important for future understanding of factors affecting shedding of both harmful and beneficial gastrointestinal bacteria through feces.


2015 ◽  
Vol 27 (7) ◽  
pp. 1479-1498 ◽  
Author(s):  
Daraneekorn Supanti ◽  
Ken Butcher ◽  
Liz Fredline

Purpose – The purpose of this study is to understand how hotel managers perceive the benefits that may accrue to employees and hotels through their engagement in corporate social responsibility (CSR) activities. Design/methodology/approach – In-depth interviews with 23 hotel managers, representing various functional responsibilities, were undertaken across four provinces in Thailand. The sample included local and international chain hotels. Findings – Hotel managers from all functional areas and levels acknowledged that CSR substantially enhanced the employer–employee relationship. Five themes depicting the beneficial effects were identified: a relationship unifying process, having fun, feeling pride, developing skills and building teamwork. These themes reflect three core factors of emotional responses, social capital and task-related skills. Practical implications – The paper illustrates that CSR activities can be customised to elicit specific effects that will engender beneficial outcomes for both hotel management and employees. Originality/value – This paper provides new insights into how hotel managers perceive the employer-employee relationship is enhanced through CSR engagement. In addition, the paper presents a practical model that will be of interest to both academics and practitioners.


2015 ◽  
Vol 81 (17) ◽  
pp. 5880-5888 ◽  
Author(s):  
C. De Maesschalck ◽  
V. Eeckhaut ◽  
L. Maertens ◽  
L. De Lange ◽  
L. Marchal ◽  
...  

ABSTRACTIn broiler chickens, feed additives, including prebiotics, are widely used to improve gut health and to stimulate performance. Xylo-oligosaccharides (XOS) are hydrolytic degradation products of arabinoxylans that can be fermented by the gut microbiota. In the current study, we aimed to analyze the prebiotic properties of XOS when added to the broiler diet. Administration of XOS to chickens, in addition to a wheat-rye-based diet, significantly improved the feed conversion ratio. XOS significantly increased villus length in the ileum. It also significantly increased numbers of lactobacilli in the colon andClostridiumcluster XIVa in the ceca. Moreover, the number of gene copies encoding the key bacterial enzyme for butyrate production, butyryl-coenzyme A (butyryl-CoA):acetate CoA transferase, was significantly increased in the ceca of chickens administered XOS. In this group of chickens, at the species level,Lactobacillus crispatusandAnaerostipes butyraticuswere significantly increased in abundance in the colon and cecum, respectively.In vitrofermentation of XOS revealed cross-feeding betweenL. crispatusandA. butyraticus. Lactate, produced byL. crispatusduring XOS fermentation, was utilized by the butyrate-producingAnaerostipesspecies. These data show the beneficial effects of XOS on broiler performance when added to the feed, which potentially can be explained by stimulation of butyrate-producing bacteria through cross-feeding of lactate and subsequent effects of butyrate on gastrointestinal function.


2015 ◽  
Vol 39 (4) ◽  
pp. 298-314 ◽  
Author(s):  
Simon Smith ◽  
Peter Stokes

Purpose – This paper aims to examine and assess the reputational impact of the logo and symbols of the UK Standard Investors in People (IiP). The extant literature highlights differing opinions in terms of the likely benefits that IiP generates following achievement of the Standard. This paper focuses specifically on the perceptions of reputational claims made regarding existing employees, potential employees and customers. Design/methodology/approach – The debate is explored through 38 interviews using the perceptions of managers and frontline employees within six IiP-accredited firms and one non-accredited firm. Findings – The study indicates that the logo and symbols of the Standard have minimal meaning and significance for the interviewees and their outlook on potential employees and customers. There were some indications, however, that the wider reputational implications of carrying the logo may have some potentially beneficial effects. Originality/value – The paper concludes that the overarching findings present a potentially serious issue for IiP, and that there is a need to understand further the impact and value of the logo and symbols.


Author(s):  
Zachary T Traughber ◽  
Fei He ◽  
Jolene M Hoke ◽  
Gary M Davenport ◽  
Maria R C de Godoy

Abstract Ancient grains are becoming an increasingly abundant carbohydrate source in the pet food market as a result of their popularity and novelty in the human market. Thus, it is imperative to evaluate the characteristics of these ingredients in vivo. Ten adult intact female beagles were used in a replicated 5x5 Latin square design. Five dietary treatments were evaluated containing either: rice (CON), amaranth (AM), white proso millet (WPM), quinoa (QU), or oat groats (OG). All diets were formulated to include 40% of the test grain and to be isonitrogenous, isocaloric, and nutritionally complete and balanced for adult dogs at maintenance. The objectives were (1) to evaluate the effects of the novel carbohydrate sources on total apparent total tract digestibility (ATTD), fecal microbiota, and fermentative end-product concentrations and (2) to evaluate the effects of novel carbohydrate sources on the post-prandial glycemic and insulinemic responses in healthy adult dogs. All diets were well-accepted by the dogs and fecal scores remained within ideal range for all treatments. In terms of ATTD, all diets were well-digested by the dogs; WPM had the highest digestibility of dry and organic matter in contrast with dogs fed the other treatments (P &lt; 0.05). Additionally, ATTD of total dietary fiber was highest for WPM (72.6%) in contrast with QU (63.5%) and CON (50.8%) but did not differ from AM (65.7%) and OG (66.6%). Dogs fed AM or OG had greater (P &lt; 0.05) fecal concentrations of total short-chain fatty acids, as well as propionate and butyrate concentrations, than CON. Ancient grain inclusion appears to beneficially shift fecal microbial populations, with increases in relative abundances of butyrogenic bacteria (i.e., members of the Lachnospiraceae family) observed for OG and reductions in Fusobacteriaceae for both AM and OG when compared with CON. Post-prandial glycemic and insulinemic responses did not differ among treatments. Together, these data suggest that ancient grains can be included up to 40% of the diet while eliciting beneficial effects on overall host health without detrimentally affecting nutrient digestibility.


2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Shazia Nauman ◽  
Ata Ul Musawir ◽  
Hina Munir ◽  
Imran Rasheed

PurposeThis study examines the mechanisms and conditions that influence how transformational leadership affects project success through the lens of social information processing theory.Design/methodology/approachA dual-stage moderated mediation model was proposed wherein the effect of transformational leadership on project success is mediated by team building, and empowering climate moderates the direct and indirect effects at both the first and second stages. The model was tested based on 370 survey responses of project management practitioners from Pakistan's IT industry. The measurement model was analyzed using confirmatory factor analysis (CFA). Moderated mediation analyses were conducted using Hayes' PROCESS macro.FindingsThe findings suggest that team-building partially mediates the effect of transformational leadership on project success. Furthermore, the conditional indirect effect of transformational leadership on project success via team-building is strengthened at both the first and second stages at higher levels of empowerment climate.Practical implicationsIt is recommended that project managers and project-intensive organizations should strive to cultivate an empowerment climate to fully realize the beneficial effects of transformational leadership behaviors in enhancing positive team outcomes and, consequently, overall project performance.Originality/valueThis study broadly contributes to the literature on the influence of project managers' leadership styles on project outcomes. Specifically, we elucidate the role of empowerment climate as an important boundary condition that enhances the beneficial effects of transformational leadership. Furthermore, we extend the application of social information processing theory to the context of projects.


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