Article
Biochemistry & Molecular Biology
Xuemeng Yang, JunRui Wu, Feiyu An, Jingwen Xu, Munkhdelger Bat-Ochir, Lili Wei, Mo Li, Menghe Bilige, Rina Wu
Summary: In this study, two components, THPS-1 and THPS-2, were isolated and purified from Tetragenococcus halophilus SNTH-8. The structural characteristics and functional properties of THPS-1 and THPS-2 were investigated. It was found that both THPS-1 and THPS-2 exhibited high antioxidant and emulsifying capacities, which are important for the research on natural emulsifiers and antioxidants.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Chemistry, Applied
Liang Sun, Yanbo Yang, Peng Lei, Sha Li, Hong Xu, Rui Wang, Yibin Qiu, Wen Zhang
Summary: This study analyzed the physicochemical properties and structure of Pantoea alhagi exopolysaccharides (PAPS), isolating and purifying two PAPS named PAPS1 and PAPS2. The results showed that PAPS1 and PAPS2 were composed of multiple monosaccharides and had moderate antioxidant and emulsifying capacities. The structural analysis of PAPS may guide future research on PAPS-mediated microbial and plant interactions and applications.
CARBOHYDRATE POLYMERS
(2021)
Article
Biotechnology & Applied Microbiology
Andres Garcia, Liliana Mercado-Munoz, Marco T. Fernandez-Sandoval, Daniel Morales-Guzman, Fernando Martinez-Morales, Maria R. Trejo-Hernandez
Summary: By controlling the oxygen transfer rate (OTRmax) and incubation temperatures, the production and emulsifying activity of bacterial exopolysaccharide produced by the B7H2 strain can be manipulated. Higher OTRmax and incubation temperatures resulted in increased emulsifying activity, while lower temperatures and higher OTRmax promoted cellular growth and exopolysaccharide production.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Article
Polymer Science
Enrique Sanchez-Leon, Elisa Huang-Lin, Ricardo Amils, Concepcion Abrusci
Summary: The Bacillus amyloliquefaciens RT7 strain was isolated from an extreme acidic environment and evaluated for its biodegradation capabilities using different carbon sources. The exopolysaccharide (EPSRT7) produced during the degradation of glucose-Tween 80 was isolated and characterized. EPSRT7 exhibited good emulsifying activity and antioxidant capacity, making it promising for bioremediation processes and other industrial applications.
Article
Chemistry, Multidisciplinary
Thi Hanh Nguyen Vu, Ngoc Tung Quach, Ngoc Anh Nguyen, Huyen Trang Nguyen, Cao Cuong Ngo, Tien Dat Nguyen, Phu-Ha Ho, Ha Hoang, Hoang Ha Chu, Quyet-Tien Phi
Summary: This study revealed that Bacillus velezensis strain VTX20 can efficiently produce EPS with antioxidant activity under sucrose cultivation conditions. Genomic analysis identified the ls-levB operon responsible for levan-type EPS synthesis in B. velezensis for the first time. The EPS mainly consisted of levan with high water solubility and water holding capacity, showing strong antioxidant activity in vitro.
APPLIED SCIENCES-BASEL
(2021)
Article
Biochemistry & Molecular Biology
Ramamoorthy Sathishkumar, Ramachandran Kannan, Sekar Jinendiran, Natesan Sivakumar, Gopal Selvakumar, Rajaram Shyamkumar
Summary: In this study, the production of exopolysaccharide (EPS) by a potential endosymbiotic bacterium associated with sponge was optimized using response surface methodology. The purified EPS exhibited strong antioxidant activity and moderate anticoagulant efficacy, with the potential applications in food and pharmaceutical industries highlighted for the future.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Biotechnology & Applied Microbiology
Xiaohong Lu, Chunhong Wang, Yiming Li, Ping Liu
Summary: This study investigated the effect of adding four different lignocellulose on the production and antioxidant activity of exopolysaccharides by Lentinula edodes. The results showed that the decomposition of lignocellulose significantly enhanced the exopolysaccharide production and antioxidant activity of L. edodes mycelium.
JOURNAL OF BIOSCIENCE AND BIOENGINEERING
(2022)
Article
Anatomy & Morphology
Mohammad Altaf, Salim Manoharadas, Mohammad Tarique Zeyad
Summary: This study demonstrated the effectiveness of cerium oxide nanoparticles synthesized using Acorus calamus aqueous extract against biofilms formed by both Gram-positive and Gram-negative bacteria, reducing bacterial growth and colonization on solid supports, as well as decreasing exopolysaccharide production. These nanoparticles have potential as a new alternative antimicrobial agent against bacterial pathogens.
MICROSCOPY RESEARCH AND TECHNIQUE
(2021)
Article
Biotechnology & Applied Microbiology
Youssef M. M. Mohammed, Mona M. G. Saad, Samir A. M. Abdelgaleil
Summary: This study investigated the production and characterization of EPS from Rhodotorula mucilaginosa YMM19 isolated from Morus nigra L. fruits, showing that EPS has potential as an emulsifying agent in pesticide formulations due to its strong emulsification capacity and effectiveness in enhancing herbicidal activity.
Article
Biochemistry & Molecular Biology
Fengrui Yang, Jiuliang Chen, Shuhong Ye, Zhaofang Liu, Yan Ding
Summary: The study investigated the antioxidant properties of exopolysaccharides (EPS) produced by Lysinibacillus sphaericus Ya6 under different osmotic stress conditions. The EPS was found to be a homogenous polysaccharide with a molecular weight of 89.62 kDa, composed of mannose and glucose. Under osmotic stress, both the molecular weight and monosaccharide composition of polysaccharides changed. Furthermore, all EPS showed antioxidant activity and the scavenging activity on DPPH radical increased with the aggravation of osmotic stress.
PROCESS BIOCHEMISTRY
(2022)
Article
Microbiology
Yang Fan, Xinqin Li, Rong Tian, Ruxue Tang, Jianguo Zhang
Summary: In this study, a strain of exopolysaccharides-producing lactic acid bacteria, SSC-12, was isolated from silage. SSC-12 demonstrated the highest exopolysaccharide production among the 22 strains isolated. The EPS produced by SSC-12 showed good antioxidant and strong antibacterial activities.
Article
Food Science & Technology
Wei-Nan Wang, Tao Li, Yi Li, Ying Zhang, Hua-Lian Wu, Wen-Zhou Xiang, Ai-Fen Li
Summary: The study focused on extracting and purifying exopolysaccharides (EPS) from Botryococcus braunii SCS-1905 microalgae, which were found to be high-molecular-weight heteropolysaccharides containing uronic acid, protein, and sulfate groups. The EPS primarily consisted of galactose, glucose, arabinose, and minor amounts of fucose, with strong antioxidant activity in crude form. These findings suggest potential applications of B. braunii EPS as a natural antioxidant for health food production.
Article
Food Science & Technology
Giovanna Iosca, Luciana De Vero, Giulia Di Rocco, Giancarlo Perrone, Maria Gullo, Andrea Pulvirenti
Summary: In this study, eight lactic acid bacteria strains were screened and found to have antimicrobial activity against common spoilage agents, as well as the ability to produce exopolysaccharides. These strains show potential as promising starter cultures for food fermentation processes.
Article
Chemistry, Physical
Jing Wang, Jiuliang Chen, Shuhong Ye, Dong Zhang, Yanping Cui, Yan Ding
Summary: This study investigated the structure and antioxidant activity of exopolysaccharides (EPS) produced by Lysinibacillus sphaericus Ya6 under different acid-base stresses. The EPS structure was analyzed using UV-visible and mid-IR, while the monosaccharide composition and molecular weight were determined using HPLC and high-performance gel permeation chromatography, respectively. The results showed that under acid-base stress conditions, the molecular weight and monosaccharide composition of the polysaccharides changed, and the growth rate and EPS production of Lysinibacillus sphaericus Ya6 were higher than the control. In vitro experiments also demonstrated that acid-base stress enhanced the antioxidant activity of EPS, especially under alkaline stress conditions.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Environmental Sciences
Shijie Wu, Kaiqiang Yu, Long Li, Lingxia Wang, Wenyu Liang
Summary: This study investigated the effects of moisture loss levels on EPS production and antioxidant system in N. flagelliforme, revealing an increase in EPS content with dehydration time and gene expression changes, as well as inhibition of antioxidant enzyme activities under drought conditions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)