The species Bacillus cereus, known for its ability to cause food borne disease, consists of a large variety of strains. An important property for discrimination of strains is their growth temperature range. Psychrotrophic strains can grow well at refrigerator temperatures but grow at 37 degrees C with difficulty. Mesophilic strains on the other hand are unable to grow below 10 degrees C, but grow well at 37 degrees C. Spores of six psychrotrophic and six mesophilic strains were investigated for their ability to survive and grow in simulated gastro-intestinal fluids, mimicking the conditions in the gastro-intestinal tract. The germination potential of psychrotrophic and mesophilic spores in simulated intestinal fluid does not differ much. Under conditions simulating the gastro-intestinal passage, 5 out of 6 mesophilic strains showed growth, and only 2 out of 6 psychrotrophic strains. Temperature (37 degrees C) and simulated gastro-intestinal conditions together influenced germination and growth.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.ijfoodmicro.2006.06.015 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Taylor dispersion analysis and release studies of β-carotene-loaded PLGA nanoparticles and liposomes in simulated gastrointestinal fluids.
RSC Adv
January 2025
Adolphe Merkle Institute, University of Fribourg 1700 Fribourg Switzerland
β-Carotene (βC), a natural carotenoid, is the most important and effective vitamin A precursor, known also for its antioxidant properties. However, its poor water solubility, chemical instability, and low bioavailability limit its effectiveness as an orally delivered functional nutrient. Nanoparticle encapsulation improves βC's bioaccessibility by enhancing its stability and solubility.
View Article and Find Full Text PDFA New Differential Gene Expression Based Simulated Annealing for Solving Gene Selection Problem: A Case Study on Eosinophilic Esophagitis and Few Other Gastro-intestinal Diseases.
Biochem Genet
December 2024
Department of CSE, Meghnad Saha Institute of Technology, Behind Urbana Complex Near Ruby General Hospital, Anandapur Rd, Uchhepota, Kolkata, West Bengal, 700150, India.
Identifying the set of genes collectively responsible for causing a disease from differential gene expression data is called gene selection problem. Though many complex methodologies have been applied to solve gene selection, formulated as an optimization problem, this study introduces a new simple, efficient, and biologically plausible solution procedure where the collective power of the targeted gene set to discriminate between diseased and normal gene expression profiles was focused. It uses Simulated Annealing to solve the underlying optimization problem and termed here as Differential Gene Expression Based Simulated Annealing (DGESA).
View Article and Find Full Text PDFBlack soldier fly (Hermetia illucens L.) whole and fractionated larvae: In vitro protein digestibility and effect of lipid and chitin removal.
Food Res Int
November 2024
University of Parma, Department of Food and Drug, Parco Area delle Scienze 17/A, 43124 Parma, Italy. Electronic address:
Protein quality, which can be defined by amino acid profile and protein digestibility, is of paramount importance when assessing a novel protein source. As the presence of chitin might impair insect protein digestion, and as there is little to no clarity as to how different insect fractions influence the overall protein digestibility, this study aimed at assessing the influence of lipids and chitin removal on the protein digestibility of black soldier fly larvae. The samples underwent an in vitro simulated gastro-intestinal digestion following the INFOGEST method, commonly used for humans, and both undigested matrices and digesta were characterized by means of amino acid composition, SDS-PAGE gel electrophoresis, and proteomic/peptidomic approaches.
View Article and Find Full Text PDFUnlocking the potential of fermented beetroot ketchup: Enhancing polyphenol recovery and gut microbiota interactions.
Food Chem
January 2025
Department of Food Gastronomy and Food Hygiene, Warsaw University of Life Sciences, Institute of Human Nutrition, Nowoursynowska Str. 159C, 02-776 Warsaw, Poland. Electronic address:
The study aimed to evaluate the effect of digestion and gut microbiota interactions on beetroot ketchup formulations, focusing on the release of polyphenols, bioaccessibility, and microbial interactions on gut microbiota with polyphenols. Tested ketchup samples were evaluated using the TNO Gastro-Intestinal Model 1 (TIM-1) simulated upper part of the gastrointestinal tract and the TNO Gastro-Intestinal Model 2 (TIM-2) simulated colon system. The results showed that fermentation of ketchup with Lactobacillus johnsonii K4, increased the release of bioactive compounds during digestion, with higher polyphenol recoveries observed in fermented samples.
View Article and Find Full Text PDFCost-effectiveness analysis of transthoracic echocardiographic assessment in patients with ischemic stroke or TIA of undetermined cause.
J Stroke Cerebrovasc Dis
December 2024
Department of Health Technology & Services Research, University of Twente, Enschede, the Netherlands. Electronic address:
Background: The multicenter ATTEST study recently assessed 1084 patients with ischemic stroke or transient ischemic attack (TIA) of undetermined cause and found that routine transthoracic echocardiography (TTE) detects abnormalities with treatment implications (i.e., major cardiac sources of embolism) in only 1 % of patients, of whom most (91 %) also had major electrocardiographic (ECG)-abnormalities.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!