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Exopolysaccharides (EPSs) produced by lactic acid bacteria present a particular interest for the food industry since they can be incorporated in foods via in situ production by selected starter cultures or applied as natural additives to improve the quality of various food products. In the present study, 43 strains were isolated from different plant-based fermented foods and identified by molecular methods. The species found were distinctively specific according to the food source. Only six strains, all isolated from sauerkraut, showed the ability to produce exopolysaccharide (EPS). The utilization of glucose, fructose and sucrose was explored with regard to EPS and biomass accumulation by the tested strains. Sucrose was clearly the best carbon source for EPS production by most of the strains, yielding up to 211.53 mg/L by strain ZE2, while biomass accumulation reached the highest levels in the glucose-based culture medium. Most strains produced similar levels of EPS with glucose and fructose, while fructose was utilized more poorly for biomass production, yielding about 50% of biomass compared to glucose for most strains. Composition analysis of the EPSs produced by strain ZE2 from glucose (EPS-1) and fructose (EPS-2) revealed that glucose (80-83 mol%) and protein (41% /) predominated in both analyzed EPSs. However, the yield of EPS-1 was twice higher than that of EPS-2, and differences in the levels of all detected sugars were found, which shows that even for the same strain, EPS yield and composition vary depending on the carbon source. These results may be the basis for the development of tailored EPS-producing starter cultures for food fermentations, as well as technologies for the production of EPS for various applications.
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http://dx.doi.org/10.3390/foods12183346 | DOI Listing |
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Research and Innovation Hub, Innovation Aesthetics, London, WC2H 9JQ, UK.
Introduction: Aesthetic medicine has evolved towards minimally invasive procedures, with biostimulators like Poly-L-Lactic Acid (PLLA), Calcium Hydroxylapatite (CaHA), and Polycaprolactone (PCL) gaining attention for their role in collagen induction, improving skin texture, elasticity, and volume. Combining these agents with other treatments-such as botulinum toxin, dermal fillers, and energy-based devices (e.g.
View Article and Find Full Text PDFInt J Biol Macromol
December 2024
Post-Graduation Program in Materials Sciences (PPGCM), Federal University of São Carlos (UFSCar), 18052-780, Brazil; Laboratory of Biomaterials, Faculty of Medical Sciences and Health (FCMS), Pontifical Catholic University of São Paulo (PUC-SP), 18030-070, Brazil; Mechanical Engineering Faculty (FEM), State University of Campinas (UNICAMP), 13083-970, Brazil; Post-Graduation Program of Biomaterials and Regenerative Medicine (PPGBMR), Surgery Department, (PUC-SP), 18030-070, Brazil.
Wound healing is a complex process involving a sequence of factors that can be disrupted, negatively impacting the quality of life for patients and overburdening healthcare systems. Advanced dressings obtained by electrospinning are highlighted by the optimization of this process, allowing air exchange and protection against microorganisms. Aiming to develop bioactive dressings, this study investigated the physicochemical, mechanical, microbiological, and in vitro biological properties of membranes containing 25 %, 50 %, 75 %, and 90 % copaiba oil (CO) co-electrospun with poly(L-co-D,L-lactic acid) (PLDLA) and natural rubber latex (NR).
View Article and Find Full Text PDFBioresour Technol
December 2024
Leibniz Institute for Agricultural Engineering and Bioeconomy e. V. (ATB), Department Microbiome Biotechnology, Max-Eyth-Allee 100, Potsdam 14469, Germany. Electronic address:
Lignocellulosic media, containing diverse sugars and growth inhibitor compounds, pose great challenges to fermentation processes. This study tested thermophile Heyndrickxia coagulans strains for the production of L-(+)-lactic acid from waste wood hydrolysate. H.
View Article and Find Full Text PDFPharmacol Ther
December 2024
Institute of Microbiology and Molecular Genetics, University of the Punjab, New Campus, Lahore 54590, Pakistan. Electronic address:
Polycystic Ovarian Syndrome is one of the major prevalent causes of infertility reported worldwide nearly 6-26 %, especially in girls hitting puberty and women at their childbearing age. The main clinical manifestations include irregular menstrual cycle, small cysts on one or both ovaries, chronic oligo-anovulation, and hirsutism. The etiological criteria are very complex and related to many factors like obesity, insulin sensitivity, inflammation, hyperandrogenism, diabetes mellitus type II, cardiovascular diseases, and dysbiosis of gut microbiota.
View Article and Find Full Text PDFFood Chem X
December 2024
Department of Chemistry and Food Technology, Polytechnic University of Madrid, Ciudad Universitaria, S/N, 28040 Madrid, Spain.
Most commercially available red wines undergo alcoholic fermentation by yeasts, followed by a second fermentation with the lactic acid bacteria once the initial process is complete. However, this traditional approach can encounter complications in specific scenarios. These situations pose risks such as stalled alcoholic fermentation or the growth of undesirable bacteria while the process remains incomplete, leaving residual sugars in the wine.
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