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de Melo Teixeira L, da Silva Santos É, Dos Santos RS, Ramos AVG, Baldoqui DC, Bruschi ML, Gonçalves JE, Gonçalves RAC, de Oliveira AJB. Production of exopolysaccharide from Klebsiella oxytoca: Rheological, emulsifying, biotechnological properties, and bioremediation applications. Int J Biol Macromol 2024:134400. [PMID: 39122076 DOI: 10.1016/j.ijbiomac.2024.134400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 07/18/2024] [Accepted: 07/31/2024] [Indexed: 08/12/2024]
Abstract
Bacteria can synthesize a broad spectrum of multifunctional polysaccharides including extracellular polysaccharides (EPS). Bacterial EPS can be utilized in the food, pharmaceutical, and biomedical areas owing to their physical and rheological properties in addition to generally presenting low toxicity. From an ecological viewpoint, EPS are biodegradable and environment compatible, offering several advantages over synthetic compounds. This study investigated the EPS produced by Klebsiella oxytoca (KO-EPS) by chemically characterizing and evaluating its properties. The monosaccharide components of the KO-EPS were determined by HPLC coupled with a refractive index detector and GC-MS. The KO-EPS was then analyzed by methylation analysis, FT-IR and NMR spectroscopy to give a potential primary structure. KO-EPS demonstrated the ability to stabilize hydrophilic emulsions with various hydrophobic compounds, including hydrocarbons and vegetable and mineral oils. In terms of iron chelation capacity, the KO-EPS could sequester 41.9 % and 34.1 % of the most common iron states, Fe2+ and Fe3+, respectively. Moreover, KO-EPS exhibited an improvement in the viscosity of aqueous dispersion, being proportional to the increase in its concentration and presenting a non-Newtonian pseudoplastic flow behavior. KO-EPS also did not present a cytotoxic effect indicating that the KO-EPS could have potential applications as a natural thickener, bioemulsifier, and bioremediation agent.
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Affiliation(s)
- Letícia de Melo Teixeira
- Graduate Program in Pharmaceutical Science, Department of Pharmacy, State University of Maringá, Av. Colombo 5790, Maringá 87.020-900, Brazil
| | - Éverton da Silva Santos
- Graduate Program in Pharmaceutical Science, Department of Pharmacy, State University of Maringá, Av. Colombo 5790, Maringá 87.020-900, Brazil
| | - Rafaela Said Dos Santos
- Graduate Program in Pharmaceutical Science, Department of Pharmacy, State University of Maringá, Av. Colombo 5790, Maringá 87.020-900, Brazil
| | | | - Débora Cristina Baldoqui
- Department of Chemistry, State University of Maringa, Av. Colombo 5790, Maringa 87.020-900, Brazil
| | - Marcos Luciano Bruschi
- Graduate Program in Pharmaceutical Science, Department of Pharmacy, State University of Maringá, Av. Colombo 5790, Maringá 87.020-900, Brazil
| | - José Eduardo Gonçalves
- Masters Program in Clean Technologies, University Center of Maringá, Av. Guedner 1610, Maringá 87.050-390, Brazil
| | - Regina Aparecida Correia Gonçalves
- Graduate Program in Pharmaceutical Science, Department of Pharmacy, State University of Maringá, Av. Colombo 5790, Maringá 87.020-900, Brazil
| | - Arildo José Braz de Oliveira
- Graduate Program in Pharmaceutical Science, Department of Pharmacy, State University of Maringá, Av. Colombo 5790, Maringá 87.020-900, Brazil.
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Munir Ahamed J, Dahms HU, Huang YL. Heavy metal tolerance, and metal biosorption by exopolysaccharides produced by bacterial strains isolated from marine hydrothermal vents. CHEMOSPHERE 2024; 351:141170. [PMID: 38219989 DOI: 10.1016/j.chemosphere.2024.141170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 12/14/2023] [Accepted: 01/08/2024] [Indexed: 01/16/2024]
Abstract
The present study highlights heavy metal tolerance, EPS production, and biosorption capacity of four hydrothermal vent bacterial strains, namely Exiguobacterium aquaticum, Mammaliicoccus sciuri, Micrococcus luteus, and Jeotgalicoccus huakuii against As, Cd, Cr, Cu, Co, Pb and Ni. The biosorption assay showed high removal efficiency of As (83%) by E. aquaticum, Cd (95%) by M. sciuri, Cu (94%) by M. luteus, and Ni (89%) by J. huakuii and their produced EPS with these metals in aqueous solution were 84%, 85%, 98%, and 91%, respectively. The maximum EPS yield was attained by optimized medium composition consisting of 1% Xylose, and 1% NaCl at pH 7. In metal-amended conditions, the four bacterial strains showed induced EPS production in the initial concentrations. SEM with EDX and CLSM images showed that the growth and EPS production of bacterial strains were affected by metal ion concentrations. A phenol sulphuric acid method and BCA assay were used to identify both the carbohydrate and total protein content of four extracted EPS. A DPPH assay revealed that EPS influences free radical scavenging and has a highly enhanced synergistic effect with its antioxidant activity. FT-IR analysis of four extracted EPS showed the shifting of peaks in the functional groups of EPS before and after adsorption of metal ions. At pH 5 and after 60 min contact time metal removal efficiency and adsorption capacity increased as calculated for As, Cd, Cu, and Ni by four extracted EPS: (86%, 20 mg/g), (74%, 19 mg/g), (94%, 60 mg/g) and (89%, 32 mg/g) and (89%, 16 mg/g), (85%, 16 mg/g), (96%, 22 mg/g) and (91%, 16 mg/g), respectively. The Langmuir compared to the Freundlich model was found to better represent the adsorption by EPS providing maximum adsorption capacities for As (34.65 mg/g), Cd (52.88 mg/g), Cu (24.91 mg/g), and Ni (58.38 mg/g).
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Affiliation(s)
- Johnthini Munir Ahamed
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Hans-Uwe Dahms
- Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung, Taiwan; Research Center for Precision Environmental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Environmental Science and Engineering, National Pingtung University of Science and Technology, Pingtung, Taiwan.
| | - Yeou Lih Huang
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan; Research Center for Precision Environmental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Laboratory Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan; College of Professional Studies, National Pingtung University of Science and Technology, Pingtung, Taiwan; Department of Chemistry, National Sun Yat-Sen University, Kaohsiung, Taiwan.
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Wu S, Huo H, Shi Y, Zhang F, Gu T, Li Z. Extraction and application of extracellular polymeric substances from fungi. ADVANCES IN APPLIED MICROBIOLOGY 2023; 125:79-106. [PMID: 38783725 DOI: 10.1016/bs.aambs.2023.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
Extracellular polymeric substances (EPS) are extracellular metabolites of microorganisms, highly associated with microbial function, adaptation, and growth. The main compounds in EPS have been revealed to be proteins, polysaccharides, nucleic acids, humic substances, lipids, etc. EPS are not only biomass, but also a biogenic material. EPS have high specific surface, abundant functional groups, and excellent degradability. In addition, they are more extensible to the environment than the microbial cells themselves, which exhibits their huge advantages. Therefore, they have been applied in many fields, such as the environment, ecosystem, basic commodities, and medicine. However, the functions of EPS highly depend on the suitable extraction process, as different extraction methods have different effects on their composition, structure, and function. There are many types of EPS extraction methods, in which physical and chemical methods have been widely utilized. This review summarizes the extraction methods and applications of EPS. In addition, it considers some important gaps in current knowledge, and indicates perspectives of EPS for their future study.
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Affiliation(s)
- Sijia Wu
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, P.R. China
| | - Hongxun Huo
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, P.R. China
| | - Yixiao Shi
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, P.R. China
| | - Feiran Zhang
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, P.R. China
| | - Tingting Gu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, P.R. China
| | - Zhen Li
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, P.R. China; Ministry of Natural Resources National Research Center for Geoanalysis, Key Laboratory of Eco-geochemistry, Beijing, P.R. China; Jiangsu Provincial Key Lab of Organic Solid Waste Utilization, Nanjing Agricultural University, Nanjing, P.R. China.
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4
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Jeewon R, Aullybux AA, Puchooa D, Nazurally N, Alrefaei AF, Zhang Y. Marine Microbial Polysaccharides: An Untapped Resource for Biotechnological Applications. Mar Drugs 2023; 21:420. [PMID: 37504951 PMCID: PMC10381399 DOI: 10.3390/md21070420] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 07/18/2023] [Accepted: 07/19/2023] [Indexed: 07/29/2023] Open
Abstract
As the largest habitat on Earth, the marine environment harbors various microorganisms of biotechnological potential. Indeed, microbial compounds, especially polysaccharides from marine species, have been attracting much attention for their applications within the medical, pharmaceutical, food, and other industries, with such interest largely stemming from the extensive structural and functional diversity displayed by these natural polymers. At the same time, the extreme conditions within the aquatic ecosystem (e.g., temperature, pH, salinity) may not only induce microorganisms to develop a unique metabolism but may also increase the likelihood of isolating novel polysaccharides with previously unreported characteristics. However, despite their potential, only a few microbial polysaccharides have actually reached the market, with even fewer being of marine origin. Through a synthesis of relevant literature, this review seeks to provide an overview of marine microbial polysaccharides, including their unique characteristics. In particular, their suitability for specific biotechnological applications and recent progress made will be highlighted before discussing the challenges that currently limit their study as well as their potential for wider applications. It is expected that this review will help to guide future research in the field of microbial polysaccharides, especially those of marine origin.
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Affiliation(s)
- Rajesh Jeewon
- Department of Health Sciences, Faculty of Medicine and Health Sciences, University of Mauritius, Réduit 80837, Mauritius
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Aadil Ahmad Aullybux
- Department of Agricultural and Food Science, Faculty of Agriculture, University of Mauritius, Réduit 80837, Mauritius
| | - Daneshwar Puchooa
- Department of Agricultural and Food Science, Faculty of Agriculture, University of Mauritius, Réduit 80837, Mauritius
| | - Nadeem Nazurally
- Department of Agricultural and Food Science, Faculty of Agriculture, University of Mauritius, Réduit 80837, Mauritius
| | - Abdulwahed Fahad Alrefaei
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Ying Zhang
- School of Ecology and Natural Conservation, Beijing Forestry University, 35 East Qinghua Road, Haidian District, Beijing 100083, China
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Ahuja V, Bhatt AK, Banu JR, Kumar V, Kumar G, Yang YH, Bhatia SK. Microbial Exopolysaccharide Composites in Biomedicine and Healthcare: Trends and Advances. Polymers (Basel) 2023; 15:polym15071801. [PMID: 37050415 PMCID: PMC10098801 DOI: 10.3390/polym15071801] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 03/27/2023] [Accepted: 04/03/2023] [Indexed: 04/08/2023] Open
Abstract
Microbial exopolysaccharides (EPSs), e.g., xanthan, dextran, gellan, curdlan, etc., have significant applications in several industries (pharma, food, textiles, petroleum, etc.) due to their biocompatibility, nontoxicity, and functional characteristics. However, biodegradability, poor cell adhesion, mineralization, and lower enzyme activity are some other factors that might hinder commercial applications in healthcare practices. Some EPSs lack biological activities that make them prone to degradation in ex vivo, as well as in vivo environments. The blending of EPSs with other natural and synthetic polymers can improve the structural, functional, and physiological characteristics, and make the composites suitable for a diverse range of applications. In comparison to EPS, composites have more mechanical strength, porosity, and stress-bearing capacity, along with a higher cell adhesion rate, and mineralization that is required for tissue engineering. Composites have a better possibility for biomedical and healthcare applications and are used for 2D and 3D scaffold fabrication, drug carrying and delivery, wound healing, tissue regeneration, and engineering. However, the commercialization of these products still needs in-depth research, considering commercial aspects such as stability within ex vivo and in vivo environments, the presence of biological fluids and enzymes, degradation profile, and interaction within living systems. The opportunities and potential applications are diverse, but more elaborative research is needed to address the challenges. In the current article, efforts have been made to summarize the recent advancements in applications of exopolysaccharide composites with natural and synthetic components, with special consideration of pharma and healthcare applications.
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Affiliation(s)
- Vishal Ahuja
- University Institute of Biotechnology, Chandigarh University, Mohali 140413, Punjab, India
- University Centre for Research & Development, Chandigarh University, Mohali 140413, Punjab, India
| | - Arvind Kumar Bhatt
- Department of Biotechnology, Himachal Pradesh University, Shimla 171005, Himachal Pradesh, India
| | - J. Rajesh Banu
- Department of Life Sciences, Central University of Tamil Nadu, Thiruvarur 610005, Tamil Nadu, India
| | - Vinod Kumar
- Centre for Climate and Environmental Protection, School of Water, Energy and Environment, Cranfield University, Cranfield MK43 0AL, UK
| | - Gopalakrishnan Kumar
- Institute of Chemistry, Bioscience and Environmental Engineering, Faculty of Science and Technology, University of Stavanger, P.O. Box 8600 Forus, 4036 Stavanger, Norway
| | - Yung-Hun Yang
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, Republic of Korea
- Institute for Ubiquitous Information Technology and Applications, Seoul 05029, Republic of Korea
| | - Shashi Kant Bhatia
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, Republic of Korea
- Institute for Ubiquitous Information Technology and Applications, Seoul 05029, Republic of Korea
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Srivastava N, Richa, Choudhury AR. Enhanced encapsulation efficiency and controlled release of co-encapsulated Bacillus coagulans spores and vitamin B9 in gellan/κ-carrageenan/chitosan tri-composite hydrogel. Int J Biol Macromol 2023; 227:231-240. [PMID: 36535354 DOI: 10.1016/j.ijbiomac.2022.12.118] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 11/02/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022]
Abstract
The current study, for the first time, attempts to co-encapsulate Bacillus coagulans spores as probiotics and vitamin B9 in the polysaccharide-based matrix for their targeted delivery. Instead of vegetative cells, probiotic spores were chosen owing to their higher stability. The matrix, tri-composite hydrogel, was synthesized from gellan, κ-carrageenan, and chitosan through self-assembly devoid of chemical cross-linkers. Hence, it was found suitable for application in the co-encapsulation of bioactive compounds. The synthesized hydrogel showed remarkable encapsulation efficiency for folic acid and probiotic spores, both individually and in combination. At acidic pH, loaded hydrogel exhibited 28.42 % and 45.14 % release of spores and folic acid, respectively, which was comparatively lower than the trends observed under neutral and alkaline pH. These results were correlated with the release pattern observed during in vitro digestibility studies. Moreover, spore conversion to vegetative cells and its high colonization were observed in the simulated intestinal phase. Therefore, the matrix maintained viability and stability of co-encapsulated folic acid and bacterial spores in gastric pH while they were slowly released in the intestinal phase. These promising findings pave the way to develop a natural matrix for co-encapsulating various bioactive compounds and probiotics.
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Affiliation(s)
- Nandita Srivastava
- Biochemical Engineering Research & Process Development Centre (BERPDC), Institute of Microbial Technology (IMTECH), Council of Scientific and Industrial Research (CSIR), Sector 39A, Chandigarh 160036, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Richa
- Biochemical Engineering Research & Process Development Centre (BERPDC), Institute of Microbial Technology (IMTECH), Council of Scientific and Industrial Research (CSIR), Sector 39A, Chandigarh 160036, India
| | - Anirban Roy Choudhury
- Biochemical Engineering Research & Process Development Centre (BERPDC), Institute of Microbial Technology (IMTECH), Council of Scientific and Industrial Research (CSIR), Sector 39A, Chandigarh 160036, India.
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Muñoz-Miranda LA, Iñiguez-Moreno M. An extensive review of marine pigments: sources, biotechnological applications, and sustainability. AQUATIC SCIENCES 2023; 85:68. [PMID: 37096011 PMCID: PMC10112328 DOI: 10.1007/s00027-023-00966-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 04/03/2023] [Indexed: 05/03/2023]
Abstract
The global demand for food and healthcare products based on natural compounds means that the industrial and scientific sectors are on a continuous search for natural colored compounds that can contribute to the replacement of synthetic colors. Natural pigments are a heterogeneous group of chemical molecules, widely distributed in nature. Recently, the interest in marine organisms has increased as they represent the most varied environment in the world and provide a wide range of colored compounds with bioactive properties and biotechnological applications in areas such as the food, pharmaceutical, cosmetic, and textile industries. The use of marine-derived pigments has increased during the last two decades because they are environmentally safe and healthy compounds. This article provides a comprehensive review of the current knowledge of sources, applications, and sustainability of the most important marine pigments. In addition, alternatives to protect these compounds from environmental conditions and their applications in the industrial sector are reviewed.
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Affiliation(s)
- Luis Alfonso Muñoz-Miranda
- Departamento de Microbiología y Patología, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, 44340 Jalisco Mexico
| | - Maricarmen Iñiguez-Moreno
- Institute of Advanced Materials for Sustainable Manufacturing, Tecnológico de Monterrey, Monterrey, 64849 Mexico
- School of Engineering and Sciences, Tecnológico de Monterrey, Monterrey, 64849 Mexico
- Universidad Politécnica del Estado de Nayarit, Tepic, 63506 Nayarit Mexico
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Srivastava N, Choudhury AR. Microbial Polysaccharide-Based Nanoformulations for Nutraceutical Delivery. ACS OMEGA 2022; 7:40724-40739. [PMID: 36406482 PMCID: PMC9670277 DOI: 10.1021/acsomega.2c06003] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 10/19/2022] [Indexed: 05/06/2023]
Abstract
In recent times, nutrition and diet have become prominent health paradigms due to sedentary lifestyle disorders. Preventive health care strategies are becoming increasingly popular instead of treating and managing diseases. A nutraceutical is an innovative concept that offers additional health benefits beyond its fundamental nutritional value. These nutraceuticals have the potential to reduce the exorbitant use of synthetic drugs because the modern medicine approach of treating diseases with high-tech, expensive supplements, and long-term consequences aggravates consumers. However, most nutraceuticals are plant-derived, making them susceptible to degradation and prone to chemical instability, poor solubility, unpleasant taste, and bioactivity loss before absorption to the targeted site. To counteract this problem, the bioavailability of these labile compounds can be maximized by encapsulating them in protective nanocarriers. It is crucial that nanoencapsulation technologies convert bioactive compounds into forms that can be easily combined with functional foods and beverages without adversely affecting their organoleptic properties. In recent years, nanoformulations using food-grade materials, such as polysaccharides, proteins, lipids, etc., have received considerable attention. Among them, microbial polysaccharides are biocompatible, nontoxic, and nonimmunogenic, and most of them are US-FDA approved and can undergo tailored modifications. The nanoformulation of microbial polysaccharide is a relatively new frontier which has several advantages over existing systems. The present article, for the first time, comprehensively reviews microbial polysaccharides-based nanodelivery systems for nutraceuticals and discusses various techno-commercial aspects of these nanotechnological preparations. Moreover, this has also attempted to draw a future research perspective in this area.
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Affiliation(s)
- Nandita Srivastava
- Biochemical
Engineering Research & Process Development Centre (BERPDC), Institute of Microbial Technology (IMTECH), Council
of Scientific and Industrial Research (CSIR), Sector 39A, Chandigarh 160036, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Anirban Roy Choudhury
- Biochemical
Engineering Research & Process Development Centre (BERPDC), Institute of Microbial Technology (IMTECH), Council
of Scientific and Industrial Research (CSIR), Sector 39A, Chandigarh 160036, India
- Tel: +91 1722880312. E-mail:
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9
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Microalgae Strain Porphyridium purpureum for Nutrient Reduction in Dairy Wastewaters. SUSTAINABILITY 2022. [DOI: 10.3390/su14148545] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
This paper has approached the study of dairy wastewater treatment and the simultaneous biocompound production by Porphyridium purpureum under continuous light and under a day–night cycle. The main goals were to achieve a reduction in the lactose content of the cheese wastewater that was tested and, at the same time, to obtain added value from the produced compounds, so as to increase the economic value of the process. The results show that biomass production increases proportionally with the concentration of lactose for both of the illumination options. The lactose concentration in the waste stream was reduced over 90% in just 7 days. The exopolysaccharide concentration in the growth medium increased with lactose availability. For the samples that were under constant light stress, the concentration of phycobiliproteins was highest when there was small amounts of lactose in the medium. The content of pigments was higher in the case of the day–night cycle of illumination; these being affected by stress factors such as continuous light and high lactose concentration. The results that were obtained prove that dairy wastewaters that are rich in lactose can be used efficiently for the growth of Porphyridium purpureum, achieving an increase in the biomass concentration and a large reduction of the lactose from this waste stream while obtaining a microalgae biomass that is rich in valuable compounds.
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Srivastava N, Kumari S, Kurmi S, Pinnaka AK, Choudhury AR. Isolation, purification, and characterization of a novel exopolysaccharide isolated from marine bacteria Brevibacillus borstelensis M42. Arch Microbiol 2022; 204:399. [PMID: 35713724 DOI: 10.1007/s00203-022-02993-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 05/17/2022] [Indexed: 11/02/2022]
Abstract
Marine microbes produce polysaccharides with unique physicochemical and functional properties that help them survive in harsh marine environments. However, only a handful of marine exopolysaccharides (EPSs) have been reported to date. The present study explored the seashore of Visakhapatnam, India, to report a novel exopolysaccharide designated as Br42 produced by Brevibacillus borstelensis M42. The isolate was identified through morphological, biochemical, phylogenetic, and genome sequencing analysis. The studies on fermentation kinetics revealed that EPS Br42 was a primary metabolite with a maximum production of 1.88 ± 0.02 g/L after 60 h when production broth was fortified with 2% glucose. Additionally, EPS Br42 was found to be a heteropolysaccharide consisting of glucose and galacturonic acid with a molecular weight of about 286 kDa. Interestingly, this molecule possesses industrially relevant functional properties such as water-holding (510 ± 0.35%), oil-holding (374 ± 0.12% for coconut oil and 384 ± 0.35% for olive oil), and swelling capacities (146.6 ± 5.75%). EPS Br42 could form an emulsion that was stable at a wide pH range for about 72 h and, in fact, performed better as compared to Span 20, a commercially used synthetic emulsifier. Moreover, this EPS was also found to be heat stable and exhibited non-Newtonian pseudoplastic behavior. These physicochemical and functional properties of polysaccharides suggest that the EPS Br42 has potential for multifarious industrial applications as an emulsifier, stabilizer, viscosifier, and binding agent.
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Affiliation(s)
- Nandita Srivastava
- Biochemical Engineering Research and Process Development Centre (BERPDC), Institute of Microbial Technology (IMTECH), Council of Scientific and Industrial Research (CSIR), Sector 39A, Chandigarh, 160036, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Sumeeta Kumari
- Microbial Type Culture Collection and Gene Bank (MTCC), Institute of Microbial Technology (IMTECH), Council of Scientific and Industrial Research (CSIR), Sector 39A, Chandigarh, 160036, India
| | - Shubham Kurmi
- Biochemical Engineering Research and Process Development Centre (BERPDC), Institute of Microbial Technology (IMTECH), Council of Scientific and Industrial Research (CSIR), Sector 39A, Chandigarh, 160036, India
| | - Anil Kumar Pinnaka
- Microbial Type Culture Collection and Gene Bank (MTCC), Institute of Microbial Technology (IMTECH), Council of Scientific and Industrial Research (CSIR), Sector 39A, Chandigarh, 160036, India
| | - Anirban Roy Choudhury
- Biochemical Engineering Research and Process Development Centre (BERPDC), Institute of Microbial Technology (IMTECH), Council of Scientific and Industrial Research (CSIR), Sector 39A, Chandigarh, 160036, India.
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11
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Tang Q, Huang G. Improving method, properties and application of polysaccharide as emulsifier. Food Chem 2021; 376:131937. [PMID: 34968911 DOI: 10.1016/j.foodchem.2021.131937] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 11/28/2021] [Accepted: 12/20/2021] [Indexed: 11/04/2022]
Abstract
At present, there are still some problems for the emulsification of polysaccharides such as lack of green, efficient and industrialized methods, lack of systematic and in-depth structure-activity relationship, and need of expanding its application scope. The physical, chemical and biological methods for improving the emulsifying of polysaccharides, the emulsifying properties and influencing factors of polysaccharides and application in food were reviewed herein. It was pointed out that the future research should focus on the effect of physical-biological synergistic function on the emulsification of polysaccharides, the effect of processing process on the structure and emulsification mechanism of polysaccharides, and further expanding the application field of polysaccharides with emulsification activity to improve the quality of products.
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Affiliation(s)
- Qilin Tang
- Laboratory of Carbohydrate Science and Engineering, Chongqing Key Laboratory of Inorganic Functional Materials, Chongqing Normal University, Chongqing 401331, China
| | - Gangliang Huang
- Laboratory of Carbohydrate Science and Engineering, Chongqing Key Laboratory of Inorganic Functional Materials, Chongqing Normal University, Chongqing 401331, China.
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