Article
Food Science & Technology
Lina Velasco, Jochen Weiss, Myriam Loeffler
Summary: The study investigated the influence of a heteropolysacchride-forming lactic acid bacteria on raw fermented sausages. The results showed that the strain producing HePS had a softening effect on the sausages compared to the control strain, especially at higher inoculation levels. Although EPS-producing LAB may negatively impact the quality of raw fermented sausages, they could be potentially useful in the production of spreadable raw sausages.
JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE
(2021)
Article
Biotechnology & Applied Microbiology
Rajendran Velmurugan, Simab Kanwal, Aran Incharoensakdi
Summary: This study found that microscale EPS obtained from engineered Synechocystis sp. PCC 6803 can be effectively used for ethanol production. The use of a single surfactant in the extraction process enhances subsequent hydrolysis and fermentation processes.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2022)
Article
Biochemistry & Molecular Biology
Julia Wuensche, Hannah Brueggemann, Moritz Gansbiller, Jochen Schmid
Summary: This study assessed the potential of three isolates of K. baliensis as exopolysaccharide producers. Among them, K. baliensis SR-745 was identified as the most promising candidate, producing polysaccharides with high viscosity rates and predominantly elastic gel character, making them highly interesting for applications in the food and cosmetic industry. The structural and functional differences between the exopolysaccharides derived from K. baliensis and a genetically engineered xanthan variant were also investigated.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Biochemistry & Molecular Biology
Geonhee Kim, Jae-Han Bae, Seongwon Cheon, Dong Hyeon Lee, Da Hye Kim, Deukbuhm Lee, Sung-Hoon Park, Sangmin Shim, Jin-Ho Seo, Nam Soo Han
Summary: This study investigated the prebiotic activities of LM742 dextran produced by Leuconostoc mesenteroides SPCL742 in the human gut microbial ecosystem. LM742 dextran showed resistance to digestive enzymes and promoted the symbiotic growth of beneficial bacteria and certain bacteria in the intestine. Additionally, LM742 dextran increased the concentration of short-chain fatty acids and inhibited the adhesion of pathogenic E. coli. These findings suggest that LM742 dextran has potential health benefits as a prebiotic polysaccharide in the human intestine.
Article
Food Science & Technology
Xiao-tong Lin, Bo-xian Xiao, Jun -ping Liu, Ming-yuan Cao, Zhi-ping Yang, Li-yan Zhao, Gui-tang Chen
Summary: In this study, a polysaccharide UGP1 was isolated from ginger and its properties and structure were determined. It was found to be an acidic heteropolysaccharide with a helix structure composed of six kinds of monosaccharide. UGP1 was also found to be fermented by gut microbiota into short chain fatty acids that may regulate the health of the human body.
Article
Biotechnology & Applied Microbiology
Barbara Giordani, Marina Naldi, Vanessa Croatti, Carola Parolin, Ulfet Erdogan, Manuela Bartolini, Beatrice Vitali
Summary: The exopolysaccharides (EPS) secreted by lactobacilli have been found to stimulate the formation of biofilms in lactobacilli themselves while inhibiting the formation of biofilms by opportunistic pathogens. These findings support the potential use of EPS as postbiotics in medicine for the treatment and prevention of vaginal infections.
MICROBIAL CELL FACTORIES
(2023)
Article
Polymer Science
Yehia A. -G. Mahmoud, Mehrez E. El-Naggar, Ahmed Abdel-Megeed, Mohamed El-Newehy
Summary: Polysaccharide materials are widely used in various fields due to their efficiency, cost-effectiveness, non-toxicity, biocompatibility, and biodegradability. Microbial polysaccharides can be synthesized using biosynthesis methods and molecular biology tools, providing potential for environmentally-friendly applications. Genetic modification of microorganisms improves polysaccharide yield and production efficiency, making biosynthesis research increasingly important in the field of science and medicine.
Article
Chemistry, Applied
Shuo Zhou, Jing Wang, Jing Ren, Mengran Xu, Ziye Jiang, Xiaoyu Zhang, Bo Li, Lei Yuan, Lili Jiao
Summary: The polysaccharide HEPN-1 from Halenia elliptica D. Don shows strong antioxidant activity, improves learning and memory deficits in cells and mice, and may have the potential to prevent aging.
CARBOHYDRATE POLYMERS
(2023)
Article
Food Science & Technology
Dilara Yalmanci, Humeyra Ispirli, Enes Dertli
Summary: In this study, 17 LAB strains were isolated from pre-fermented liquids of different cereals and legumes, with two strains identified as the highest EPS producers. The EPSs from Weissella confusa W-16 and Leuconostoc lactis GW-6 were found to contain (1->3)-linked alpha-D-glucose units. Various analyses confirmed the structure and characteristics of the dextrans produced by these strains.
Article
Food Science & Technology
Lijuan Peng, Bo Wu, Min Zhou, Guoyan Yang, Ying Zhang, Hongyan Lu
Summary: Weizmannia coagulans, which has high temperature tolerance and stability, was used to produce exopolysaccharides (EPS) through fermentation at 52 degrees Celsius. A weak basic anion exchange resin was used to create a buffer system that neutralized lactic acid and formed hydrogen bonds with the capsular polysaccharides of the bacteria. This increased the growth space for capsular polysaccharides. The optimized fermentation conditions resulted in an EPS concentration of 19.8 g/L, which was a 20-fold increase compared to conventional fermentation.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2023)
Article
Fisheries
Yimin Chen, Peili Gao, Xu Tang, Changan Xu
Summary: Antarctica is home to special extremophiles, with a cold-adapted bacterium identified as a potential candidate for exopolysaccharides production. Physiochemistry, bioactivities, and potential antioxidant properties of the produced EPS were evaluated, showing promising applications in aquaculture for enhancing immunity and enzyme activities in fish.
Review
Polymer Science
Vishal Ahuja, Arvind Kumar Bhatt, J. Rajesh Banu, Vinod Kumar, Gopalakrishnan Kumar, Yung-Hun Yang, Shashi Kant Bhatia
Summary: Microbial exopolysaccharides (EPSs) such as xanthan, dextran, gellan, and curdlan have various applications in industries due to their biocompatibility, nontoxicity, and functional characteristics. However, their commercial use in healthcare practices is hindered by biodegradability issues, poor cell adhesion, mineralization, and low enzyme activity. Blending EPSs with other polymers can improve their characteristics and make the composites suitable for diverse applications, especially tissue engineering. More research is needed to address the challenges and commercialize these products.
Article
Materials Science, Multidisciplinary
Wen-Xin Zhang, Yi-Ru Gao, Rong Xue, William Nguyen, Wei Chen, Jian-Hua Wang, Yang Shu
Summary: Ionic liquids have unique properties and great potential in biomedical applications. They can be used in various aspects of liquid formulations to meet specific application scenarios. Recent research has focused on the applications of ionic liquid-based microemulsions, micelles, vesicles, and solvents in the biomedical field.
MATERIALS TODAY PHYSICS
(2023)
Review
Biotechnology & Applied Microbiology
Fatemeh Salimi, Parisa Farrokh
Summary: Microbial exopolysaccharides (EPSs) are valuable extracellular macromolecules produced by various microorganisms. They have different structures and properties, and can be produced in large quantities using low-cost substrates in a short time. Microbial EPSs have multiple bioactivities and potential applications in various industries. The enhancement of EPS production and improvement of their properties can be achieved through genetic engineering methods. This review focuses on the therapeutic activities of microbial EPSs in infectious diseases and metabolic disorders, as well as the structure-activity relationship.
WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY
(2023)
Article
Food Science & Technology
Xuan Xu, Zhang Li, Ying Meng, Qunfei Ma, Chunyan Liu, Pengying Zhang, Kaoshan Chen
Summary: RBAPS, an acidic heteropolysaccharide extracted from Rhizopus nigricans mediated burdock residue fermentation, showed immunomodulatory and anti-tumor effects in vitro. RBAPS promoted cell proliferation and phagocytosis, inhibited cell apoptosis, and induced cytokine secretion in macrophages. It also promoted M1 macrophage transformation and induced the secretion of NO and IL-6.
JOURNAL OF FUNCTIONAL FOODS
(2022)
