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Araújo CM, Sampaio KB, da Silva JYP, de Oliveira JN, de Albuquerque TMR, Lima MDC, Lima MDS, do Nascimento YM, da Silva EF, da Silva MS, Tavares JF, de Souza EL, de Oliveira MEG. Exploiting tropical fruit processing coproducts as circular resources to promote the growth and maintain the culturability and functionality of probiotic lactobacilli. Food Microbiol 2024; 123:104596. [PMID: 39038898 DOI: 10.1016/j.fm.2024.104596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 07/01/2024] [Accepted: 07/04/2024] [Indexed: 07/24/2024]
Abstract
This study evaluated the use of acerola (Malpighia glabra L., CACE), cashew (Anacardium occidentale L., CCAS), and guava (Psidium guayaba L., CGUA) fruit processing coproducts as substrates to promote the growth, metabolite production, and maintenance of the viability/metabolic activity of the probiotics Lactobacillus acidophilus LA-05 and Lacticaseibacillus paracasei L-10 during cultivation, freeze-drying, storage, and exposure to simulated gastrointestinal digestion. Probiotic lactobacilli presented high viable counts (≥8.8 log colony-forming units (CFU)/mL) and a short lag phase during 24 h of cultivation in CACE, CCAS, and CGUA. Cultivation of probiotic lactobacilli in fruit coproducts promoted sugar consumption, medium acidification, and production of organic acids over time, besides increasing the of several phenolic compounds and antioxidant activity. Probiotic lactobacilli cultivated in fruit coproducts had increased survival percentages after freeze-drying and during 120 days of refrigerated storage. Moreover, probiotic lactobacilli cultivated and freeze-dried in fruit coproducts had larger subpopulations of live and metabolically active cells when exposed to simulated gastrointestinal digestion. The results showed that fruit coproducts not only improved the growth and helped to maintain the viability and metabolic activity of probiotic strains but also enriched the final fermented products with bioactive compounds, being an innovative circular strategy for producing high-quality probiotic cultures.
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Affiliation(s)
- Caroliny Mesquita Araújo
- Laboratory of Food Microbiology, Department of Nutrition, Federal University of Paraíba, João Pessoa, PB, Brazil
| | - Karoliny Brito Sampaio
- Laboratory of Food Microbiology, Department of Nutrition, Federal University of Paraíba, João Pessoa, PB, Brazil
| | | | - Jordana Nunes de Oliveira
- Post-Graduate Program in Nutrition Sciences, Federal University of Sergipe, São Cristóvão, SE, Brazil
| | | | - Maiara da Costa Lima
- Laboratory of Food Microbiology, Department of Nutrition, Federal University of Paraíba, João Pessoa, PB, Brazil
| | - Marcos Dos Santos Lima
- Department of Food Technology, Federal Institute of Sertão de Pernambuco, Petrolina, PE, Brazil
| | | | - Evandro Ferreira da Silva
- Institute for Research in Drugs and Medicines - IPeFarM, Federal University of Paraíba, João Pessoa, PB, Brazil
| | - Marcelo Sobral da Silva
- Institute for Research in Drugs and Medicines - IPeFarM, Federal University of Paraíba, João Pessoa, PB, Brazil
| | - Josean Fechine Tavares
- Institute for Research in Drugs and Medicines - IPeFarM, Federal University of Paraíba, João Pessoa, PB, Brazil
| | - Evandro Leite de Souza
- Laboratory of Food Microbiology, Department of Nutrition, Federal University of Paraíba, João Pessoa, PB, Brazil
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Mudaliar SB, Poojary SS, Bharath Prasad AS, Mazumder N. Probiotics and Paraprobiotics: Effects on Microbiota-Gut-Brain Axis and Their Consequent Potential in Neuropsychiatric Therapy. Probiotics Antimicrob Proteins 2024; 16:1440-1464. [PMID: 38294675 PMCID: PMC11322360 DOI: 10.1007/s12602-024-10214-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/04/2024] [Indexed: 02/01/2024]
Abstract
Neuropsychiatric disorders are clinical conditions that affect cognitive function and emotional stability, often resulting from damage or disease in the central nervous system (CNS). These disorders are a worldwide concern, impacting approximately 12.5% of the global population. The gut microbiota has been linked to neurological development and function, implicating its involvement in neuropsychiatric conditions. Due to their interaction with gut microbial communities, probiotics offer a natural alternative to traditional treatments such as therapeutic drugs and interventions for alleviating neuropsychiatric symptoms. Introduced by Metchnikoff in the early 1900s, probiotics are live microorganisms that provide various health benefits, including improved digestion, enhanced sleep quality, and reduced mental problems. However, concerns about their safety, particularly in immunocompromised patients, warrant further investigation; this has led to the concept of "paraprobiotics", inactivated forms of beneficial microorganisms that offer a safer alternative. This review begins by exploring different methods of inactivation, each targeting specific cellular components like DNA or proteins. The choice of inactivation method is crucial, as the health benefits may vary depending on the conditions employed for inactivation. The subsequent sections focus on the potential mechanisms of action and specific applications of probiotics and paraprobiotics in neuropsychiatric therapy. Probiotics and paraprobiotics interact with gut microbes, modulating the gut microbial composition and alleviating gut dysbiosis. The resulting neuropsychiatric benefits primarily stem from the gut-brain axis, a bidirectional communication channel involving various pathways discussed in the review. While further research is needed, probiotics and paraprobiotics are promising therapeutic agents for the management of neuropsychiatric disorders.
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Affiliation(s)
- Samriti Balaji Mudaliar
- Department of Public Health & Genomics, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Sumith Sundara Poojary
- Department of Biophysics, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Alevoor Srinivas Bharath Prasad
- Department of Public Health & Genomics, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India.
| | - Nirmal Mazumder
- Department of Biophysics, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India.
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Wang L, Al-Dhabi NA, Huang X, Luan Z, Tang W, Xu Z, Xu W. Suitability of inorganic coagulants for algae-laden water treatment: Trade-off between algae removal and cell viability, aggregate properties and coagulant residue. JOURNAL OF HAZARDOUS MATERIALS 2024; 471:134314. [PMID: 38640668 DOI: 10.1016/j.jhazmat.2024.134314] [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: 12/26/2023] [Revised: 03/13/2024] [Accepted: 04/14/2024] [Indexed: 04/21/2024]
Abstract
Inorganic coagulants could effectively precipitate algae cells but might increase the potential risks of cell damage and coagulant residue. This study was conducted to critically investigate the suitability of polyaluminum (PAC), FeCl3 and TiCl4 for algae-laden water treatment in terms of the trade-off between algal substance removal, cell viability, and coagulant residue. The results showed that an appropriate increase in coagulant dosage contributed to better coagulation performance but severe cell damage and a higher risk of intracellular organic matter (IOM) release. TiCl4 was the most destructive, resulting in 60.85% of the algal cells presenting membrane damage after coagulation. Intense hydrolysis reaction of Ti salts was favorable for the formation of larger and more elongated, dendritic structured flocs than Al and Fe coagulants. TiCl4 exhibited the lowest residue level and remained in the effluents mainly in colloidal form. The study also identified charge neutralization, chemisorption, enmeshment, and complexation as the dominant mechanisms for algae water coagulation by metal coagulants. Overall, this study provides the trade-off analyses between maximizing algae substance removal and minimizing potential damage to cell integrity and is practically valuable to develop the most suitable and feasible technique for algae-laden water treatment.
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Affiliation(s)
- Lili Wang
- School of Water Conservancy and Environment, University of Jinan, No. 336 Nanxinzhuang Western Road, Jinan 250022, Shandong, PR China
| | - Naif Abdullah Al-Dhabi
- Department of Botany and Microbiology, College of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Xin Huang
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Science, Chinese Academy of Science, No. 18 Shuangqing Road, Beijing 100085, PR China
| | - Zhiyuan Luan
- Jinan Environmental Research Institute, 25th Floor, Xinsheng Building, No. 1299 Xinluo Street, Jinan 250000, Shandong, PR China
| | - Wangwang Tang
- College of Environmental Science and Engineering, Hunan University, No. 8 Lushan South Road, Changsha 410082, Hunan, PR China
| | - Zhenghe Xu
- School of Water Conservancy and Environment, University of Jinan, No. 336 Nanxinzhuang Western Road, Jinan 250022, Shandong, PR China.
| | - Weiying Xu
- School of Water Conservancy and Environment, University of Jinan, No. 336 Nanxinzhuang Western Road, Jinan 250022, Shandong, PR China; Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Science, Chinese Academy of Science, No. 18 Shuangqing Road, Beijing 100085, PR China.
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Carvalho R, Tapia JH, Minsavage GV, Jones JB, Paret ML. Elucidating the Mode of Action of Hybrid Nanoparticles of Cu/Zn Against Copper-Tolerant Xanthomonas euvesicatoria. PHYTOPATHOLOGY 2024; 114:1206-1214. [PMID: 38302452 DOI: 10.1094/phyto-09-23-0339-r] [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: 02/03/2024]
Abstract
The widespread presence of tolerance to copper in Xanthomonas species has resulted in the need to develop alternative approaches to control plant diseases caused by xanthomonads. In recent years, nanotechnological approaches have resulted in the identification of novel materials to control plant pathogens. With many metal-based nanomaterials having shown promise for disease control, an important question relates to the mode of action of these new materials. In this study, we used several approaches, such as scanning electron microscopy, propidium monoazide quantitative polymerase chain reaction, epifluorescence microscopy, and RNA sequencing to elucidate the mode of action of a Cu/Zn hybrid nanoparticle against copper-tolerant strains of Xanthomonas euvesicatoria. We demonstrate that Cu/Zn did not activate copper resistance genes (i.e., copA and copB) in the copper-tolerant bacterium but functioned by disrupting the bacterial cell structure and perturbing important biological processes such as cell respiration and chemical homeostasis.
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Affiliation(s)
- Renato Carvalho
- Department of Plant Pathology, University of Florida, Gainesville, FL 32611
| | - Jose H Tapia
- Department of Plant Pathology, University of Florida, Gainesville, FL 32611
| | - Gerald V Minsavage
- Department of Plant Pathology, University of Florida, Gainesville, FL 32611
| | - Jeffrey B Jones
- Department of Plant Pathology, University of Florida, Gainesville, FL 32611
| | - Mathews L Paret
- Department of Plant Pathology, University of Florida, Gainesville, FL 32611
- North Florida Research and Education Center, University of Florida, Quincy, FL 32251
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Sampaio KB, de Brito Alves JL, do Nascimento YM, Tavares JF, da Silva MS, Dos Santos Nascimento D, de Araújo Rodrigues NP, Monteiro MC, Garcia EF, de Souza EL. Effects of Simulated Gastrointestinal Conditions on Combined Potentially Probiotic Limosilactobacillus fermentum 296, Quercetin, and/or Resveratrol as Bioactive Components of Novel Nutraceuticals. Probiotics Antimicrob Proteins 2024; 16:308-319. [PMID: 36708461 DOI: 10.1007/s12602-023-10046-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/20/2023] [Indexed: 01/29/2023]
Abstract
This study evaluated the effects of simulated gastrointestinal conditions (SGIC) on combined potentially probiotic Limosilactobacillus fermentum 296 (~ 10 log CFU/mL), quercetin (QUE, 160 mg), and/or resveratrol (RES, 150 mg) as the bioactive components of novel nutraceuticals. Four different nutraceuticals were evaluated during exposure to SGIC and analyzed the plate counts and physiological status of L. fermentum 296, contents and bioaccessibility of QUE and RES, and antioxidant capacity. Nutraceuticals with QUE and RES had the highest plate counts (4.94 ± 0.32 log CFU/mL) and sizes of live cell subpopulations (28.40 ± 0.28%) of L. fermentum 296 after SGIC exposure. An index of injured cells (Gmean index, arbitrary unit defined as above 0.5) indicated that part of L. fermentum 296 cells could be entered the viable but nonculturable state when the nutraceuticals were exposed to gastric and intestinal conditions while maintaining vitality. The nutraceuticals maintained high contents (QUE ~ 29.17 ± 0.62 and RES ~ 23.05 mg/100 g) and bioaccessibility (QUE ~ 41.0 ± 0.09% and RES ~ 67.4 ± 0.17%) of QUE and RES, as well as high antioxidant capacity (ABTS assay ~ 88.18 ± 1.16% and DPPH assay 75.54 ± 0.65%) during SGIC exposure, which could be linked to the protective effects on L. fermentum 296 cells. The developed nutraceuticals could cross along the gastrointestinal tract with high concentrations of functioning potentially probiotic cells and bioavailable phenolic compounds to exert their beneficial impacts on consumer health, being an innovative strategy for the co-ingestion of these bioactive components.
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Affiliation(s)
- Karoliny Brito Sampaio
- Department of Nutrition, Health Sciences Center, Federal University of Paraíba, Campus I - Cidade Universitária, CEP, João Pessoa, PB, 58051-900, Brazil
| | - José Luiz de Brito Alves
- Department of Nutrition, Health Sciences Center, Federal University of Paraíba, Campus I - Cidade Universitária, CEP, João Pessoa, PB, 58051-900, Brazil
| | | | - Josean Fechine Tavares
- Institute for Research in Drugs and Medicines, Federal University of Paraíba, João Pessoa, PB, Brazil
| | - Marcelo Sobral da Silva
- Institute for Research in Drugs and Medicines, Federal University of Paraíba, João Pessoa, PB, Brazil
| | - Davi Dos Santos Nascimento
- Department of Nutrition, Health Sciences Center, Federal University of Paraíba, Campus I - Cidade Universitária, CEP, João Pessoa, PB, 58051-900, Brazil
| | | | - Mariana Costa Monteiro
- Laboratory of Functional Foods, Institute of Nutrition, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Estefânia Fernandes Garcia
- Department of Gastronomy, Center of Technology and Regional Development, Federal University of Paraíba, João Pessoa, PB, Brazil
| | - Evandro Leite de Souza
- Department of Nutrition, Health Sciences Center, Federal University of Paraíba, Campus I - Cidade Universitária, CEP, João Pessoa, PB, 58051-900, Brazil.
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Tomaś N, Myszka K, Wolko Ł, Juzwa W. Global transcriptome analysis of Pseudomonas aeruginosa NT06 response to potassium chloride, sodium lactate, sodium citrate, and microaerophilic conditions in a fish ecosystem. FEMS Microbiol Lett 2024; 371:fnae043. [PMID: 38845372 DOI: 10.1093/femsle/fnae043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 05/25/2024] [Accepted: 06/05/2024] [Indexed: 06/29/2024] Open
Abstract
Pseudomonas aeruginosa is an opportunistic pathogen that recently has been increasingly isolated from foods, especially from minimally processed fish-based products. Those are preserved by the addition of sodium chloride (NaCl) and packaging in a modified atmosphere. However, the current trends of minimizing NaCl content may result in an increased occurrence of P. aeruginosa. NaCl can be replaced with potassium chloride (KCl) or sodium salts of organic acids. Herein, we examined the antimicrobial effects of KCl, sodium lactate (NaL), sodium citrate (NaC), and sodium acetate (NaA) against P. aeruginosa NT06 isolated from fish. Transcriptome response of cells grown in medium imitating a fish product supplemented with KCl and KCl/NaL/NaC and maintained under microaerophilic conditions was analysed. Flow cytometry analysis showed that treatment with KCl and KCl/NaL/NaC resulted in changed metabolic activity of cells. In response to KCl and KCl/NaL/NaC treatment, genes related to cell maintenance, stress response, quorum sensing, virulence, efflux pump, and metabolism were differentially expressed. Collectively, our results provide an improved understanding of the response of P. aeruginosa to NaCl alternative compounds that can be implemented in fish-based products and encourage further exploration of the development of effective methods to protect foods against the P. aeruginosa, underestimate foodborne bacteria.
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Affiliation(s)
- Natalia Tomaś
- Department of Biotechnology and Food Microbiology, Faculty of Food Science and Nutrition, Poznan University of Life Sciences, Wojska Polskiego 48, 60-637 Poznań, Poland
- Department of Human Nutrition and Dietotherapy, Faculty of Biological Sciences, University of Zielona Gora, Pałac Kalsk 67, 66-100 Sulechów, Poland
| | - Kamila Myszka
- Department of Biotechnology and Food Microbiology, Faculty of Food Science and Nutrition, Poznan University of Life Sciences, Wojska Polskiego 48, 60-637 Poznań, Poland
| | - Łukasz Wolko
- Department of Biochemistry and Biotechnology, Faculty of Agriculture, Horticulture and Bioengineering, Poznan University of Life Sciences, Dojazd 11, 60-632 Poznań, Poland
| | - Wojciech Juzwa
- Department of Biotechnology and Food Microbiology, Faculty of Food Science and Nutrition, Poznan University of Life Sciences, Wojska Polskiego 48, 60-637 Poznań, Poland
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Kubota H, Serata M, Matsumoto H, Shida K, Okumura T. Detection of Glycolytically Active Lacticaseibacillus paracasei Strain Shirota by Flow Cytometry Targeting the Efflux Activity of Fluorescent Dye: a Potential Tool for Quality Assessment of Probiotic Cells in Milk Products. Appl Environ Microbiol 2023; 89:e0215622. [PMID: 37022200 PMCID: PMC10132099 DOI: 10.1128/aem.02156-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 03/21/2023] [Indexed: 04/07/2023] Open
Abstract
The rapid and accurate detection of viable probiotic cells in dairy products is important for assessing product quality in manufacturing. Flow cytometry is widely used for the rapid analysis of bacterial cells. However, further investigation is needed into the optimum property to use it for assessing cell viability. Here, we proposed using the efflux activity of a fluorescent dye, carboxyfluorescein (CF), as an indicator of cell viability. CF is generated from 5(6)-carboxyfluorescein diacetate as a result of cleavage by intracellular esterase. It generally accumulates in the cell, but certain bacterial species are known to extrude it. We found here that the probiotic strain Lacticaseibacillus paracasei strain Shirota (LcS) also extruded CF in the presence of energy sources, such as glucose. To investigate the mechanism of its CF-efflux activity, we screened CF-efflux-negative mutants from a random mutagenesis LcS library and examined the whole genome for genes responsible for CF efflux. We identified a base substitution in the pfkA gene in the glycolytic pathway, and we demonstrated that intact pfkA was essential for CF efflux, indicating that CF-efflux-positive cells must have uncompromised glycolytic activity. We also confirmed that there was a good correlation between the rate of CF-efflux-positive cells and that of colony-forming cells of LcS in a fermented milk product, whereas other properties, such as esterase activity and cell membrane integrity, lost their correlation with the colony-forming activity after long storage. We propose that CF-efflux activity could be an appropriate indicator of cell viability in certain probiotic strains. IMPORTANCE To our knowledge, this is the first report to demonstrate that CF efflux requires uncompromised glycolytic activity in certain lactic acid bacteria. Compared with the cell properties currently widely used for cell viability assessment, such as intracellular esterase activity and membrane integrity, CF-efflux activity enables the accurate detection of culturable cells, especially in products stored for long periods at cold temperatures. These results indicate strongly that CF-efflux activity can be an adequate cell-viability indicator and that flow cytometric quantification could be an alternative to conventional CFU counting. Our findings should be especially informative for dairy/probiotic product manufacturing.
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Affiliation(s)
| | | | | | - Kan Shida
- Yakult Central Institute, Tokyo, Japan
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Juárez-Jiménez B, Fenice M, Pasqualetti M, Muñoz-Palazon B, Correa-Galeote D, Braconcini M, Gorrasi S. Flow Cytometric Investigation of Salinicola halophilus S28 Physiological Response Provides Solid Evidence for Its Uncommon and High Ability to Face Salt-Stress Conditions. MICROBIOLOGY RESEARCH 2023. [DOI: 10.3390/microbiolres14020034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
Abstract
In a previous work, some bacterial strains isolated from the Saline di Tarquinia marine salterns (Viterbo, Italy) showed very unusual growth profiles in relation to temperature and salinity variations when grown in solid media. In particular, Salinicola halophilus S28 showed optimal or suboptimal growth in a very wide range of NaCl concentrations, suggesting a great coping ability with salinity variations. These intriguing outcomes did not fit with the general Salinicola halophilus description as a moderately halophilic species. Therefore, this study profiles the actual physiological status of S28 cells subjected to different NaCl concentrations to provide evidence for the actual coping ability of strain S28 with broad salinity variations. Flow cytometry was selected as the evaluation method to study the physiological status of bacterial cells subjected to different salinity levels, monitoring the strain response at different growth phases over 72 h. Strain S28 showed maximal growth at 8% NaCl; however, it grew very well with no statistically significant differences at all salinity conditions (4–24% NaCl). Flow cytometric results provided clear evidence of its actual and strong ability to face increasing salinity, revealing a good physiological response up to 24% of NaCl. In addition, strain S28 showed very similar cell physiological status at all salinity levels, as also indicated by the flat growth profile revealed in the range of 4–24% NaCl. This is the first study regarding the physiological response during the growth of halophilic bacteria under different conditions of salinity via flow cytometry. This technique represents an effective tool for the investigation of the physiological status of each cell, even if it is somehow underrated and underused by microbiologists for this purpose.
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Affiliation(s)
- Belén Juárez-Jiménez
- Department of Microbiology, Faculty of Pharmacy, University of Granada, 18071 Granada, Andalucía, Spain
| | - Massimiliano Fenice
- Department of Ecological and Biological Sciences (DEB), University of Tuscia, Largo Università snc, 01100 Viterbo, Italy
- Laboratory of Applied Marine Microbiology, CoNISMa, University of Tuscia, Largo Università snc, 01100 Viterbo, Italy
| | - Marcella Pasqualetti
- Department of Ecological and Biological Sciences (DEB), University of Tuscia, Largo Università snc, 01100 Viterbo, Italy
- Laboratory of Ecology of Marine Fungi, CoNISMa, University of Tuscia, Largo Università snc, 01100 Viterbo, Italy
| | - Barbara Muñoz-Palazon
- Department of Microbiology, Faculty of Pharmacy, University of Granada, 18071 Granada, Andalucía, Spain
- Department of Ecological and Biological Sciences (DEB), University of Tuscia, Largo Università snc, 01100 Viterbo, Italy
| | - David Correa-Galeote
- Department of Microbiology, Faculty of Pharmacy, University of Granada, 18071 Granada, Andalucía, Spain
| | - Martina Braconcini
- Department of Ecological and Biological Sciences (DEB), University of Tuscia, Largo Università snc, 01100 Viterbo, Italy
| | - Susanna Gorrasi
- Department of Ecological and Biological Sciences (DEB), University of Tuscia, Largo Università snc, 01100 Viterbo, Italy
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Characterization of Autochthonous Strains from the Cecal Content of Creole Roosters for a Potential Use as Probiotics. Animals (Basel) 2023; 13:ani13030455. [PMID: 36766343 PMCID: PMC9913217 DOI: 10.3390/ani13030455] [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: 09/21/2022] [Revised: 12/29/2022] [Accepted: 01/26/2023] [Indexed: 01/31/2023] Open
Abstract
Five strains (CLP2, CLP3, CLP4, CLP5, and CLP6) were isolated from the cecal content of Creole roosters fed without antibiotic growth promoters. Biochemical and morphological tests (negative catalase and oxidase) confirmed the presence of lactic acid bacteria. Additionally, considering the 16s RNA, Lactobacillus vaginalis (CLP2, CLP3, CLP5, and CLP6) and Lactobacillus reuteri (CLP4) were identified. All strains (mainly CLP4 and CLP5) showed variable and significant growth (p < 0.001) at different levels of pH. Likewise, all bacterial cultures were quantified at 42 °C, although only strains CLP4 and CLP5 managed to grow at 30 °C. Additionally, the CLP4, CLP5, and CLP6 strains grew from 0.05 to 0.30% of biliary salts. However, only the CLP4 isolate grew at different concentrations of NaCl (2-10%), and CLP5 grew at 2% NaCl. The CLP4 strain was able to inhibit the in vitro growth of enterobacteria such as Escherichia coli ATCC® 11775TM, Salmonella Typhimurium ATCC® 14028TM, and Clostridium perfringens ATCC® 13124TM. In addition, CLP4 had lower sensitivity in the presence of amoxicillin and tetracycline compared to these pathogenic bacteria. Considering these in vitro results, it is necessary to carry out in vivo studies with the CLP4 strain to test the hypothesis of its probiotic effect in poultry.
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High pressure processing, acidic and osmotic stress increased resistance to aminoglycosides and tetracyclines and the frequency of gene transfer among strains from commercial starter and protective cultures. Food Microbiol 2022; 107:104090. [DOI: 10.1016/j.fm.2022.104090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 07/03/2022] [Accepted: 07/04/2022] [Indexed: 12/30/2022]
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Gu Y, Zhong K, Cao R, Yang Z. Aqueous lithium chloride solution as a non-toxic bactericidal and fungicidal disinfectant for air-conditioning systems: Efficacy and mechanism. ENVIRONMENTAL RESEARCH 2022; 212:113112. [PMID: 35346655 DOI: 10.1016/j.envres.2022.113112] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 03/04/2022] [Accepted: 03/09/2022] [Indexed: 06/14/2023]
Abstract
Airborne pathogenic bacteria and fungi transmitted through air-conditioning (AC) systems have been identified as a major public health risk. Air scrubbing is a promising liquid-based air disinfection technique that captures and inactivates airborne pathogens in liquid disinfectants. However, owing to the drawbacks of irritating odor and toxicity, the commonly-used chemical disinfectants cannot be employed for AC systems. This study aimed to unveil the inactivation performance and mechanism of non-toxic and chemically stable aqueous lithium chloride (LiCl) solution-the popular liquid desiccant in the AC systems-as a user-friendly disinfectant. Four prominent airborne pathogenic bacteria and fungi were exposed to the LiCl solution under various conditions. The inactivation effects were quantified with fluorescence-staining-based confocal microscopy and verified with the pathogens' membrane integrity variations, intracellular substance leakage, and morphological changes. Results showed that LiCl solution was remarkably efficient in inactivating the pathogens within 60 min, with an efficacy of 35.2-96.2%. The solution's inactivation ability was promoted by increasing the temperatures and concentrations; however, it appeared insensitive to exposure time over 30 min. We then explored the inactivation mechanism of LiCl solution by assessing cellular protein leakages and compared the inactivation rates with those of NaCl solution. The extracellular protein increased by over 470% after being exposed to LiCl solution. The inactivation rate was also considerably higher than in NaCl solution under the same osmotic pressure (24.79 MPa). We suggest that apart from osmotic pressure, the inactivation is reinforced by Li+-specific properties, including its strong water attraction that deprived the solvation shells of microbial protein and caused protein denaturation. We propose that aqueous LiCl solution may act as a user-friendly disinfectant for air-scrubbing due to its attractive characteristics, including its non-toxicity, odorless nature, and chemical stability. These findings may open up a "green" way to disinfect airborne pathogens and safeguard public health.
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Affiliation(s)
- Yuqian Gu
- Department of Civil Engineering, School of Environmental Science & Engineering, Donghua University, 201620, 2999, North Renmin Road, Songjiang District, Shanghai, China
| | - Ke Zhong
- Department of Civil Engineering, School of Environmental Science & Engineering, Donghua University, 201620, 2999, North Renmin Road, Songjiang District, Shanghai, China
| | - Rong Cao
- Department of Radiology, Shanghai General Hospital, Shanghai Jiao Tong University, China
| | - Zili Yang
- Department of Civil Engineering, School of Environmental Science & Engineering, Donghua University, 201620, 2999, North Renmin Road, Songjiang District, Shanghai, China.
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Wang H, Huang T, Liu K, Yu J, Yao G, Zhang W, Zhang H, Sun T. Protective effects of whey protein hydrolysate on Bifidobacterium animalis ssp. lactis Probio-M8 during freeze-drying and storage. J Dairy Sci 2022; 105:7308-7321. [PMID: 35931487 DOI: 10.3168/jds.2021-21546] [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: 11/08/2021] [Accepted: 04/20/2022] [Indexed: 11/19/2022]
Abstract
We evaluated the potential of whey protein hydrolysate as a lyoprotectant for maintaining the cell viability of Bifidobacterium animalis ssp. lactis Probio-M8 during freeze-drying and subsequent storage. The moisture content and water activity of the lyophilized samples treated by different concentrations of whey protein hydrolysate were ≤5.23 ± 0.33 g/100 g and ≤0.102 ± 0.003, respectively. During storage at 25°C and 30°C, whey protein hydrolysate had a stronger protective effect on B. lactis Probio-M8 than the same concentration of whey protein. Using the Excel tool GinaFit, we estimated the microbial inactivation kinetics during storage. Whey protein hydrolysate reduced cell damage caused by an increase in temperature. Whey protein hydrolysate could protect cells by increasing the osmotic pressure as a compatible solute. Whey protein hydrolysate improved cell membrane integrity and reduced the amounts of reactive oxygen species and malondialdehyde produced. The findings indicated that whey protein hydrolysate was a novel antioxidant lyoprotectant that could protect probiotics during freeze-drying and storage.
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Affiliation(s)
- Haoqian Wang
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, Hohhot, 010018, China; Key Laboratory of Dairy Products Processing, Ministry of Agriculture and Rural Affairs, Inner Mongolia Agricultural University, Hohhot, 010018, China
| | - Tian Huang
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, Hohhot, 010018, China; Key Laboratory of Dairy Products Processing, Ministry of Agriculture and Rural Affairs, Inner Mongolia Agricultural University, Hohhot, 010018, China
| | - Kailong Liu
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, Hohhot, 010018, China; Key Laboratory of Dairy Products Processing, Ministry of Agriculture and Rural Affairs, Inner Mongolia Agricultural University, Hohhot, 010018, China
| | - Jie Yu
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, Hohhot, 010018, China; Key Laboratory of Dairy Products Processing, Ministry of Agriculture and Rural Affairs, Inner Mongolia Agricultural University, Hohhot, 010018, China
| | - Guoqiang Yao
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, Hohhot, 010018, China; Key Laboratory of Dairy Products Processing, Ministry of Agriculture and Rural Affairs, Inner Mongolia Agricultural University, Hohhot, 010018, China
| | - Wenyi Zhang
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, Hohhot, 010018, China; Key Laboratory of Dairy Products Processing, Ministry of Agriculture and Rural Affairs, Inner Mongolia Agricultural University, Hohhot, 010018, China
| | - Heping Zhang
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, Hohhot, 010018, China; Key Laboratory of Dairy Products Processing, Ministry of Agriculture and Rural Affairs, Inner Mongolia Agricultural University, Hohhot, 010018, China
| | - Tiansong Sun
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, Hohhot, 010018, China; Key Laboratory of Dairy Products Processing, Ministry of Agriculture and Rural Affairs, Inner Mongolia Agricultural University, Hohhot, 010018, China.
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13
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Fathima S, Shanmugasundaram R, Adams D, Selvaraj RK. Gastrointestinal Microbiota and Their Manipulation for Improved Growth and Performance in Chickens. Foods 2022; 11:1401. [PMID: 35626971 PMCID: PMC9140538 DOI: 10.3390/foods11101401] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Revised: 05/01/2022] [Accepted: 05/09/2022] [Indexed: 12/17/2022] Open
Abstract
The gut of warm-blooded animals is colonized by microbes possibly constituting at least 100 times more genetic material of microbial cells than that of the somatic cells of the host. These microbes have a profound effect on several physiological functions ranging from energy metabolism to the immune response of the host, particularly those associated with the gut immune system. The gut of a newly hatched chick is typically sterile but is rapidly colonized by microbes in the environment, undergoing cycles of development. Several factors such as diet, region of the gastrointestinal tract, housing, environment, and genetics can influence the microbial composition of an individual bird and can confer a distinctive microbiome signature to the individual bird. The microbial composition can be modified by the supplementation of probiotics, prebiotics, or synbiotics. Supplementing these additives can prevent dysbiosis caused by stress factors such as infection, heat stress, and toxins that cause dysbiosis. The mechanism of action and beneficial effects of probiotics vary depending on the strains used. However, it is difficult to establish a relationship between the gut microbiome and host health and productivity due to high variability between flocks due to environmental, nutritional, and host factors. This review compiles information on the gut microbiota, dysbiosis, and additives such as probiotics, postbiotics, prebiotics, and synbiotics, which are capable of modifying gut microbiota and elaborates on the interaction of these additives with chicken gut commensals, immune system, and their consequent effects on health and productivity. Factors to be considered and the unexplored potential of genetic engineering of poultry probiotics in addressing public health concerns and zoonosis associated with the poultry industry are discussed.
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Affiliation(s)
- Shahna Fathima
- Department of Poultry Science, The University of Georgia, Athens, GA 30605, USA; (S.F.); (D.A.); (R.K.S.)
| | - Revathi Shanmugasundaram
- Toxicology and Mycotoxin Research Unit, US National Poultry Research Center, Athens, GA 30605, USA
| | - Daniel Adams
- Department of Poultry Science, The University of Georgia, Athens, GA 30605, USA; (S.F.); (D.A.); (R.K.S.)
| | - Ramesh K. Selvaraj
- Department of Poultry Science, The University of Georgia, Athens, GA 30605, USA; (S.F.); (D.A.); (R.K.S.)
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14
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Pathak R, Vergis J, Chouhan G, Kumar M, Malik SS, Barbuddhe SB, Rawool DB. Comparative efficiency of carbohydrates on the biofilm‐forming ability of enteroaggregative
Escherichia coli. J Food Saf 2022. [DOI: 10.1111/jfs.12971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Richa Pathak
- Division of Veterinary Public Health ICAR‐Indian Veterinary Research Institute Bareilly Uttar Pradesh India
- Department of Biotechnology, School of Engineering and Technology Sharda University Greater Noida Uttar Pradesh India
| | - Jess Vergis
- Division of Veterinary Public Health ICAR‐Indian Veterinary Research Institute Bareilly Uttar Pradesh India
| | - Garima Chouhan
- Department of Biotechnology, School of Engineering and Technology Sharda University Greater Noida Uttar Pradesh India
| | - Manesh Kumar
- Division of Veterinary Public Health ICAR‐Indian Veterinary Research Institute Bareilly Uttar Pradesh India
| | - Satyaveer Singh Malik
- Division of Veterinary Public Health ICAR‐Indian Veterinary Research Institute Bareilly Uttar Pradesh India
| | | | - Deepak Bhiwa Rawool
- Division of Veterinary Public Health ICAR‐Indian Veterinary Research Institute Bareilly Uttar Pradesh India
- ICAR‐National Research Centre on Meat Chengicherla Telangana India
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15
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Dynamics of physiological responses of potentially probiotic fruit-derived Limosilactobacillus fermentum in apple and orange juices during refrigeration storage and exposure to simulated gastrointestinal conditions. Arch Microbiol 2021; 204:38. [DOI: 10.1007/s00203-021-02672-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 10/01/2021] [Accepted: 10/18/2021] [Indexed: 11/26/2022]
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16
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Extractive Fermentation for Recovery of Bacteriocin-Like Inhibitory Substances Derived from Lactococcus lactis Gh1 Using PEG2000/Dextran T500 Aqueous Two-Phase System. FERMENTATION-BASEL 2021. [DOI: 10.3390/fermentation7040257] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
This work aimed to optimize the parameters affecting partitioning of a bacteriocin-like inhibitory substances (BLIS) from Lactococcus lactis Gh1 in extractive fermentation using polyethylene glycol (PEG)/dextran aqueous two-phase system (ATPS). This system was developed for the simultaneous cell cultivation and downstream processing of BLIS. Results showed that the molecular weight of PEG, PEG concentration, and dextran T500 affect the partition coefficient (K), purification factor (PF), and yield of BLIS partitioning. ATPS composed of 10% (w/w) PEG2000 and 8% (w/w) dextran T500, provided the greatest conditions for the extractive BLIS production. The K (1.00 ± 0.16), PF (2.92 ± 0.37) and yield (77.24 ± 2.81%) were increased at selected orbital speed (200 rpm) and pH (pH 7). Sustainable growth of the cells in the bioreactor and repeated fermentation up to the eighth extractive batch were observed during the scale up process, ensuring a continuous production and purification of BLIS. Hence, the simplicity and effectiveness of ATPS in the purification of BLIS were proven in this study.
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17
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de Jesus LCL, Drumond MM, Aburjaile FF, Sousa TDJ, Coelho-Rocha ND, Profeta R, Brenig B, Mancha-Agresti P, Azevedo V. Probiogenomics of Lactobacillus delbrueckii subsp. lactis CIDCA 133: In Silico, In Vitro, and In Vivo Approaches. Microorganisms 2021; 9:microorganisms9040829. [PMID: 33919849 PMCID: PMC8070793 DOI: 10.3390/microorganisms9040829] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 03/24/2021] [Accepted: 03/30/2021] [Indexed: 11/16/2022] Open
Abstract
Lactobacillus delbrueckii subsp. lactis CIDCA 133 (CIDCA 133) has been reported as a potential probiotic strain, presenting immunomodulatory properties. This study investigated the possible genes and molecular mechanism involved with a probiotic profile of CIDCA 133 through a genomic approach associated with in vitro and in vivo analysis. Genomic analysis corroborates the species identification carried out by the classical microbiological method. Phenotypic assays demonstrated that the CIDCA 133 strain could survive acidic, osmotic, and thermic stresses. In addition, this strain shows antibacterial activity against Salmonella Typhimurium and presents immunostimulatory properties capable of upregulating anti-inflammatory cytokines Il10 and Tgfb1 gene expression through inhibition of Nfkb1 gene expression. These reported effects can be associated with secreted, membrane/exposed to the surface and cytoplasmic proteins, and bacteriocins-encoding genes predicted in silico. Furthermore, our results showed the genes and the possible mechanisms used by CIDCA 133 to produce their beneficial host effects and highlight its use as a probiotic microorganism.
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Affiliation(s)
- Luís Cláudio Lima de Jesus
- Laboratório de Genética Celular e Molecular (LGCM), Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte 31270-901, Brazil; (L.C.L.d.J.); (F.F.A.); (T.d.J.S.); (N.D.C.-R.); (R.P.)
| | - Mariana Martins Drumond
- Centro Federal de Educação Tecnológica de Minas Gerais (CEFET/MG), Departamento de Ciências Biológicas, Belo Horizonte 31421-169, Brazil;
| | - Flávia Figueira Aburjaile
- Laboratório de Genética Celular e Molecular (LGCM), Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte 31270-901, Brazil; (L.C.L.d.J.); (F.F.A.); (T.d.J.S.); (N.D.C.-R.); (R.P.)
- Laboratório de Flavivírus, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro 21040-360, Brazil
| | - Thiago de Jesus Sousa
- Laboratório de Genética Celular e Molecular (LGCM), Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte 31270-901, Brazil; (L.C.L.d.J.); (F.F.A.); (T.d.J.S.); (N.D.C.-R.); (R.P.)
| | - Nina Dias Coelho-Rocha
- Laboratório de Genética Celular e Molecular (LGCM), Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte 31270-901, Brazil; (L.C.L.d.J.); (F.F.A.); (T.d.J.S.); (N.D.C.-R.); (R.P.)
| | - Rodrigo Profeta
- Laboratório de Genética Celular e Molecular (LGCM), Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte 31270-901, Brazil; (L.C.L.d.J.); (F.F.A.); (T.d.J.S.); (N.D.C.-R.); (R.P.)
| | - Bertram Brenig
- Institute of Veterinary Medicine, University of Göttingen, D-37077 Göttingen, Germany;
| | | | - Vasco Azevedo
- Laboratório de Genética Celular e Molecular (LGCM), Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte 31270-901, Brazil; (L.C.L.d.J.); (F.F.A.); (T.d.J.S.); (N.D.C.-R.); (R.P.)
- Correspondence:
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18
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Zhang H, Wang Q, Liu H, Kong B, Chen Q. In vitro growth performance, antioxidant activity and cell surface physiological characteristics of Pediococcus pentosaceus R1 and Lactobacillus fermentum R6 stressed at different NaCl concentrations. Food Funct 2021; 11:6376-6386. [PMID: 32613220 DOI: 10.1039/c9fo02309g] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This study investigated the impact of NaCl concentrations on the growth performance, antioxidant activity, and cell surface physiological characteristics of Pediococcus pentosaceus R1 and Lactobacillus fermentum R6. The growth of the two strains was significantly inhibited by 4 and 6% NaCl and stagnated at 8% NaCl (P < 0.05). Compared with the control, both strains showed higher acid-producing activity, antioxidant activity and autoaggregation ability at 2 or 4% NaCl. A lower cell surface hydrophobicity of the two strains was observed with increased NaCl concentrations. High NaCl concentrations resulted in cell surface damage and deformation and even slowed the proliferation of the strains, and led to significant shifts in amide A and amide III groups in proteins and the C-H stretching of >CH2 in fatty acids (P < 0.05). In summary, appropriate NaCl concentrations (2 and 4%) improved the antioxidant activity of the two strains, while the higher NaCl concentrations (6%) decreased their antioxidant activity, which may be due to the associated changes in the cell surface structural properties of the two strains.
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Affiliation(s)
- Huan Zhang
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China.
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19
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Effects of combination shear stress, moderate electric field (MEF), and nisin on kinetics and mechanisms of inactivation of Escherichia coli K12 and Listeria innocua in fresh apple-kale blend juice. J FOOD ENG 2021. [DOI: 10.1016/j.jfoodeng.2020.110262] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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20
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Al-Nabulsi AA, Osaili TM, Oqdeh SB, Olaimat AN, Jaradat ZW, Ayyash M, Holley RA. Antagonistic effects of Lactobacillus reuteri against Escherichia coli O157:H7 in white-brined cheese under different storage conditions. J Dairy Sci 2021; 104:2719-2734. [PMID: 33455758 DOI: 10.3168/jds.2020-19308] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 11/03/2020] [Indexed: 01/23/2023]
Abstract
This study aimed to investigate the survival of the foodborne pathogen Escherichia coli O157:H7 in white-brined cheeses as influenced by the presence of Lactobacillus reuteri. The white cheeses were made from pasteurized bovine milk inoculated with E. coli O157:H7 (cocktail of 3 strains) to achieve ∼5 log10 cfu/g with absence or presence of Lb. reuteri (∼6 log10 cfu/g). Cheese samples were brined in 10% or 15% NaCl solution and stored at 10°C and 25°C for 28 d. The white-brined cheeses were assessed for salt content, pH, water activity (Aw), and numbers of E. coli O157:H7, Lb. reuteri, nonstarter lactic acid bacteria (NSLAB), yeasts, and molds. Results showed that E. coli O157:H7 survived in cheese stored in both brine solutions at 10°C and 25°C regardless of the presence of Lb. reuteri. A substantial reduction was observed in cheese stored in 10% NaCl brine at 25°C, followed by cheese stored in 15% NaCl brine at 10°C by 2.64 and 2.16 log10 cfu/g, respectively, in the presence of Lb. reuteri and by 1.02 and 1.87 log10 cfu/g, respectively, in the absence of Lb. reuteri under the same conditions. The pathogen in brine solutions survived but at a lower rate. Furthermore, the growth of Lb. reuteri and NSLAB were enhanced or slightly decreased in cheese and brine by 28 d, respectively. The salt concentrations of cheese ranged from 4 to 6% and 5 to 7% (wt/wt), during 28-d ripening in 10 and 15% brine, respectively. Values of pH and Aw slightly increased at d 1 after exposure to brine and reached 4.69 to 6.08 and 0.91 to 0.95, respectively, in all treatments. Therefore, the addition of Lb. reuteri can be used as a biopreservation method to inhibit the survival of E. coli O157:H7 in white-brined cheese when combined with the appropriate temperature, NaCl level, and storage time.
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Affiliation(s)
- Anas A Al-Nabulsi
- Department of Nutrition and Food Technology, Jordan University of Science and Technology, Irbid 22110, Jordan.
| | - Tareq M Osaili
- Department of Nutrition and Food Technology, Jordan University of Science and Technology, Irbid 22110, Jordan; Department of Clinical Nutrition and Dietetics, University of Sharjah, PO Box 27272, Sharjah, United Arab Emirates
| | - Saba B Oqdeh
- Department of Nutrition and Food Technology, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Amin N Olaimat
- Department of Clinical Nutrition and Dietetics, Faculty of Applied Medical Sciences, The Hashemite University, Zarqa 13115, Jordan
| | - Ziad W Jaradat
- Department of Biotechnology and Genetic Engineering, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Mutamed Ayyash
- Department of Food Science, College of Food and Agriculture, United Arab Emirates University, Al-Ain, 15551, United Arab Emirates.
| | - Richard A Holley
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2 Canada
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21
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Ma J, Xu C, Liu F, Hou J, Shao H, Yu W. Stress adaptation and cross-protection of Lactobacillus plantarum KLDS 1.0628. CYTA - JOURNAL OF FOOD 2021. [DOI: 10.1080/19476337.2020.1859619] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Jiage Ma
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, P. R. China
| | - Cong Xu
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, P. R. China
| | - Fei Liu
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, P. R. China
| | - Juncai Hou
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, P. R. China
| | - Hong Shao
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, P. R. China
| | - Wei Yu
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, P. R. China
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22
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Ursachi CȘ, Perța-Crișan S, Munteanu FD. Strategies to Improve Meat Products' Quality. Foods 2020; 9:E1883. [PMID: 33348725 PMCID: PMC7766022 DOI: 10.3390/foods9121883] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 12/08/2020] [Accepted: 12/16/2020] [Indexed: 02/07/2023] Open
Abstract
Meat products represent an important component of the human diet, their consumption registering a global increase over the last few years. These foodstuffs constitute a good source of energy and some nutrients, such as essential amino acids, high biological value proteins, minerals like iron, zinc, selenium, manganese and B-complex vitamins, especially vitamin B12. On the other hand, nutritionists have associated high consumption of processed meat with an increased risk of several diseases. Researchers and processed meat producers are involved in finding methods to eliminate nutritional deficiencies and potentially toxic compounds, to obtain healthier products and at the same time with no affecting the sensorial quality and safety of the meat products. The present review aims to summarize the newest trends regarding the most important methods that can be applied to obtain high-quality products. Nutritional enrichment with natural bioactive plant compounds (antioxidants, dietary fibers) or probiotics, reduction of harmful components (salt, nitrate/nitrite, N-nitrosamines) and the use of alternative technologies (high-pressure processing, cold plasma, ultrasounds) are the most used current strategies to accomplish this aim.
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Affiliation(s)
| | | | - Florentina-Daniela Munteanu
- Faculty of Food Engineering, Tourism and Environmental Protection, “Aurel Vlaicu” University of Arad, 310330 Arad, Romania; (C.Ș.U.); (S.P.-C.)
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23
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Flow-Cytometric Method for Viability Analysis of Mycoplasma gallisepticum and Other Cell-Culture-Contaminant Mollicutes. Curr Microbiol 2020; 78:67-77. [PMID: 33159562 DOI: 10.1007/s00284-020-02255-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 10/14/2020] [Indexed: 10/23/2022]
Abstract
Mycoplasma is the smallest self-replicating bacteria, figuring as common contaminant of eukaryotic cell cultures. Production inputs and operator's manipulation seem to be the main sources of such contamination. Many analytical approaches have been applied for mycoplasma detection in cell cultures and also in biological products. However, unless they were validated, only indicator cell culture and bacteriological culture are considered as compendial methods for quality control of biological products. Nano-flow cytometry has been pointed out as an alternative technique for addressing prokaryotic and eukaryotic cell viability being a substantial tool for reference material production. In this study, a viability-flow-cytometry assay was standardized for M. gallisepticum and then applied to other cell-culture-contaminant mycoplasmas. For this, M. galliseticum's growth rate was observed and different treatments were evaluated to establish low viability cultures (cell death-induced control). Distinct viability markers and their ideal concentrations (titration) were appraised. Ethanol treatment showed to be the best death-inducing control. CFDA and TOPRO markers revealed to be the best choice for detecting live and dead mycoplasma frequencies, respectively. The standardized methodology was applied to Mycoplasma arginini, M. hyorhinis, M. orale, Spiroplasma citri and Acholeplasma laidlawii. Significant statistical difference was observed in the percentage of viable cells in comparison to ethanol treatment for A. laidlawii in CFDA and in both markers for M. gallisepticum, M. hyorhinis and S. citri. In summary, we standardized a flow cytometry assay for assessing M. gallisepticum - and potentially other species - viability and ultimately applied for reference material production improving the quality control of biological products.
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24
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Bai Y, Ren P, Feng P, Yan H, Li W. Shift in rhizospheric and endophytic bacterial communities of tomato caused by salinity and grafting. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 734:139388. [PMID: 32470659 DOI: 10.1016/j.scitotenv.2020.139388] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 04/24/2020] [Accepted: 05/10/2020] [Indexed: 06/11/2023]
Abstract
Saline water has to be used as an alternative resource in modern agriculture due to the increasing lack of fresh water. Approaches that promote the growth of crops under saline conditions have, therefore, become crucial. Grafting has been reported to be effective for this; however, the associated bacterial community remains unclear. To obtain a deeper understanding of the underlying microbial mechanisms, both grafted and non-grafted tomatoes were irrigated with three types of water having different electrical conductivity values. The experiment lasted 2.5 months, after which, the soil chemical properties and tomato heights were assessed. The rhizospheric and endophytic bacterial communities of samples from the different treatments were assessed by Illumina sequencing. The results showed that saline water significantly affected leaf-associated endophytic bacterial communities, whereas rhizosphere and root- and stem-associated bacterial communities were not affected. Increasing salinity increased the abundance of Gammaproteobacteria, but decreased the abundance of Actinobacteria, Alphaproteobacteria, Bacilli, and Acidobacteria at the class level of the leaf-associated bacterial community. Moreover, under higher salinity levels, grafting increased the diversity of the leaf-endophytic bacterial community. Overall, this study provides a comprehensive understanding of the rhizosphere and endophytic bacterial communities of tomato under saline conditions. The results highlight the importance of leaf-endophytic bacteria for salt response in plants. This is an important complementary finding to previous studies on the effect of salinity, which mainly focused on plant rhizosphere and root bacterial communities.
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Affiliation(s)
- Yani Bai
- Bio-Agriculture Institute of Shaanxi, Xi'an 710043, China; Enzyme Engineering Research Center of Shaanxi, Xi'an 710600, China
| | - Ping Ren
- Bio-Agriculture Institute of Shaanxi, Xi'an 710043, China; Key Laboratory of Plant Nematode of Shaanxi Province, Xi'an 710043, China.
| | - Puyang Feng
- Bio-Agriculture Institute of Shaanxi, Xi'an 710043, China; Enzyme Engineering Research Center of Shaanxi, Xi'an 710600, China
| | - Hong Yan
- Bio-Agriculture Institute of Shaanxi, Xi'an 710043, China; Enzyme Engineering Research Center of Shaanxi, Xi'an 710600, China
| | - Wenxiao Li
- Bio-Agriculture Institute of Shaanxi, Xi'an 710043, China; Enzyme Engineering Research Center of Shaanxi, Xi'an 710600, China
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25
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Ma J, Wang W, Sun C, Gu L, Liu Z, Yu W, Chen L, Jiang Z, Hou J. Effects of environmental stresses on the physiological characteristics, adhesion ability and pathogen adhesion inhibition of Lactobacillus plantarum KLDS 1.0328. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.02.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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26
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Chen X, Li L, Yang F, Wu J, Wang S. Effects of gelatin-based antifreeze peptides on cell viability and oxidant stress of Streptococcus thermophilus during cold stage. Food Chem Toxicol 2020; 136:111056. [PMID: 31846719 DOI: 10.1016/j.fct.2019.111056] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 12/09/2019] [Accepted: 12/11/2019] [Indexed: 01/11/2023]
Abstract
Cold stage adversely affects cell proliferation and cell viability of probiotics such as Streptococcus thermophilus in food industry, new type of cryoprotectants continues to be needed. Gelatin-based antifreeze peptide becomes a popular topic because of its cryoprotective effects on cold-stressed probiotics. In this study the effects of tilapia scales antifreeze peptides (TSAPP) on cell viability and oxidant stress of S. thermophilus during cold stage were investigated. The results showed that the percentage of viable cells was increased 10.85 folds compared with control groups. Addition of TSAPP activated the activities of ATPases, relieved the hyperpolarization of cell membrane potential and regulated the intracellular Ca2+ concentration. Furthermore, TSAPP significantly inhibited reactive oxygen species level and malonaldehyde content in cells. Under cryopreservation with TSAPP, cells of S. thermophilus maintained higher activities of antioxidant enzymes including catalase, peroxidase and total antioxidant capacity. These findings indicate that TSAPP likely offered its cellular protection by maintaining membrane integrity and alleviation of oxidative stress.
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Affiliation(s)
- Xu Chen
- College of Chemical Engineering, Fuzhou University, Fuzhou, Fujian, 350108, China; College of Biological Science and Technology, Fuzhou University, Fuzhou, Fujian, 350108, China
| | - Ling Li
- College of Biological Science and Technology, Fuzhou University, Fuzhou, Fujian, 350108, China; Yango University, Fuzhou, Fujian, 350015, China
| | - Fujia Yang
- College of Biological Science and Technology, Fuzhou University, Fuzhou, Fujian, 350108, China
| | - Jinhong Wu
- Department of Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Shaoyun Wang
- College of Biological Science and Technology, Fuzhou University, Fuzhou, Fujian, 350108, China.
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27
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Shu G, Tian M, Chen L, Ma D, Cui X, Meng J. Probiotic goat milk tablets: Formulation optimization and stability evaluation. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2019.108862] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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28
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Lin K, Marr LC. Humidity-Dependent Decay of Viruses, but Not Bacteria, in Aerosols and Droplets Follows Disinfection Kinetics. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:1024-1032. [PMID: 31886650 DOI: 10.1021/acs.est.9b04959] [Citation(s) in RCA: 135] [Impact Index Per Article: 33.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The transmission of some infectious diseases requires that pathogens can survive (i.e., remain infectious) in the environment, outside the host. Relative humidity (RH) is known to affect the survival of some microorganisms in the environment; however, the mechanism underlying the relationship has not been explained, particularly for viruses. We investigated the effects of RH on the viability of bacteria and viruses in both suspended aerosols and stationary droplets using traditional culture-based approaches. Results showed that viability of bacteria generally decreased with decreasing RH. Viruses survived well at RHs lower than 33% and at 100%, whereas their viability was reduced at intermediate RHs. We then explored the evaporation rate of droplets consisting of culture media and the resulting changes in solute concentrations over time; as water evaporates from the droplets, solutes such as sodium chloride in the media become more concentrated. Based on the results, we suggest that inactivation of bacteria is influenced by osmotic pressure resulting from elevated concentrations of salts as droplets evaporate. We propose that the inactivation of viruses is governed by the cumulative dose of solutes or the product of concentration and time, as in disinfection kinetics. These findings emphasize that evaporation kinetics play a role in modulating the survival of microorganisms in droplets.
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Affiliation(s)
- Kaisen Lin
- Department of Civil and Environmental Engineering , Virginia Tech , 418 Durham Hall , Blacksburg , Virginia 24061 , United States
| | - Linsey C Marr
- Department of Civil and Environmental Engineering , Virginia Tech , 418 Durham Hall , Blacksburg , Virginia 24061 , United States
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29
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Gong P, Lin K, Zhang J, Han X, Lyu L, Yi H, Sun J, Zhang L. Enhancing spray drying tolerance of Lactobacillus bulgaricus by intracellular trehalose delivery via electroporation. Food Res Int 2020; 127:108725. [DOI: 10.1016/j.foodres.2019.108725] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 09/26/2019] [Accepted: 09/28/2019] [Indexed: 11/16/2022]
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30
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Morphophysiological responses of detached and adhered biofilms of Pseudomonas fluorescens to acidic electrolyzed water. Food Microbiol 2019; 82:89-98. [DOI: 10.1016/j.fm.2019.01.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 01/16/2019] [Accepted: 01/16/2019] [Indexed: 12/26/2022]
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31
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Terpou A, Papadaki A, Lappa IK, Kachrimanidou V, Bosnea LA, Kopsahelis N. Probiotics in Food Systems: Significance and Emerging Strategies Towards Improved Viability and Delivery of Enhanced Beneficial Value. Nutrients 2019; 11:E1591. [PMID: 31337060 PMCID: PMC6683253 DOI: 10.3390/nu11071591] [Citation(s) in RCA: 307] [Impact Index Per Article: 61.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 07/02/2019] [Accepted: 07/10/2019] [Indexed: 12/31/2022] Open
Abstract
Preserving the efficacy of probiotic bacteria exhibits paramount challenges that need to be addressed during the development of functional food products. Several factors have been claimed to be responsible for reducing the viability of probiotics including matrix acidity, level of oxygen in products, presence of other lactic acid bacteria, and sensitivity to metabolites produced by other competing bacteria. Several approaches are undertaken to improve and sustain microbial cell viability, like strain selection, immobilization technologies, synbiotics development etc. Among them, cell immobilization in various carriers, including composite carrier matrix systems has recently attracted interest targeting to protect probiotics from different types of environmental stress (e.g., pH and heat treatments). Likewise, to successfully deliver the probiotics in the large intestine, cells must survive food processing and storage, and withstand the stress conditions encountered in the upper gastrointestinal tract. Hence, the appropriate selection of probiotics and their effective delivery remains a technological challenge with special focus on sustaining the viability of the probiotic culture in the formulated product. Development of synbiotic combinations exhibits another approach of functional food to stimulate the growth of probiotics. The aim of the current review is to summarize the strategies and the novel techniques adopted to enhance the viability of probiotics.
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Affiliation(s)
- Antonia Terpou
- Food Biotechnology Group, Department of Chemistry, University of Patras, GR-26500 Patras, Greece
| | - Aikaterini Papadaki
- Department of Food Science and Technology, Ionian University, Argostoli, 28100 Kefalonia, Greece
| | - Iliada K Lappa
- Department of Food Science and Technology, Ionian University, Argostoli, 28100 Kefalonia, Greece
| | - Vasiliki Kachrimanidou
- Department of Food Science and Technology, Ionian University, Argostoli, 28100 Kefalonia, Greece
| | - Loulouda A Bosnea
- Hellenic Agricultural Organization DEMETER, Institute of Technology of Agricultural Products, Dairy Department, Katsikas, 45221 Ioannina, Greece.
| | - Nikolaos Kopsahelis
- Department of Food Science and Technology, Ionian University, Argostoli, 28100 Kefalonia, Greece.
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32
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Zhou W, Sun-Waterhouse D, Xiong J, Cui C, Wang W, Dong K. Desired soy sauce characteristics and autolysis of Aspergillus oryzae induced by low temperature conditions during initial moromi fermentation. Journal of Food Science and Technology 2019; 56:2888-2898. [PMID: 31205344 DOI: 10.1007/s13197-019-03742-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 02/21/2019] [Accepted: 03/20/2019] [Indexed: 12/28/2022]
Abstract
This is the first report on the effect of low temperature stress applied during initial moromi fermentation on the quality and taste of soy sauce. Koji was prepared to yield initial moromi under three comparative fermentation conditions over 9 days: (1) 4 °C and 0% brine (i.e., water) (LTSF); (2) 4 °C and 16% w/w brine (LTSH); (3) 25 °C and 16% w/w brine (the control, CRTH). Greater extent of autolysis in samples was found under low temperature stress conditions (i.e., at 4 °C, a temperature much lower than the normal temperature range like 25 °C for natural microbial growth and performance). Compared to CRTH, LTSF had a two-fold increase of glutaminase activity in dregs and 65.17% increase in supernatant, and after 60 days of moromi fermentation, a 5.73% and 3.47% increase, respectively, in the contents of glutamic acid (Glu) and aspartic acid (Asp). LTSF had the highest total free amino acid content due to both the low temperature stress and absence of salt. The intensity ranking of umaminess and kokumi sensation (LTSF > LTSH > CRTH) revealed by sensory analysis followed the changing trends of their umami and sweet amino acid contents with a trend reversal in the bitter amino acid content. Low temperature (4 °C) without brine for initial moromi fermentation seemed beneficial, leading to a soy sauce product with desired taste and amino acid contents.
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Affiliation(s)
- Wensi Zhou
- 1School of Food Science and Engineering, South China University of Technology, Guangzhou, 510640 China
| | - Dongxiao Sun-Waterhouse
- 1School of Food Science and Engineering, South China University of Technology, Guangzhou, 510640 China
| | - Jian Xiong
- 1School of Food Science and Engineering, South China University of Technology, Guangzhou, 510640 China
| | - Chun Cui
- 1School of Food Science and Engineering, South China University of Technology, Guangzhou, 510640 China
| | - Wei Wang
- 1School of Food Science and Engineering, South China University of Technology, Guangzhou, 510640 China
| | - Keming Dong
- Guangdong Weiwei Biotechnology Co., LTD, Guangzhou, 510640 China
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33
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Chen H, Tian M, Chen L, Cui X, Meng J, Shu G. Optimization of composite cryoprotectant for freeze-drying Bifidobacterium bifidum BB01 by response surface methodology. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2019; 47:1559-1569. [DOI: 10.1080/21691401.2019.1603157] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- He Chen
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi’an, PR China
| | - Mengqi Tian
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi’an, PR China
| | - Li Chen
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi’an, PR China
| | - Xiuxiu Cui
- Department of Research and Development, Xi’an Baiyue Goat Milk Corp., Ltd, Xi’an, PR China
| | - Jiangpeng Meng
- Department of Research and Development, Xi’an Baiyue Goat Milk Corp., Ltd, Xi’an, PR China
| | - Guowei Shu
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi’an, PR China
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34
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Olszewska M, Nynca A, Białobrzewski I, Kocot A, Łaguna J. Assessment of the bacterial viability of chlorine‐ and quaternary ammonium compounds‐treated
Lactobacillus
cells via a multi‐method approach. J Appl Microbiol 2019; 126:1070-1080. [DOI: 10.1111/jam.14208] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 01/10/2019] [Accepted: 01/14/2019] [Indexed: 11/27/2022]
Affiliation(s)
- M.A. Olszewska
- Chair of Industrial and Food Microbiology Faculty of Food Science University of Warmia and Mazury in Olsztyn Olsztyn Poland
| | - A. Nynca
- Laboratory of Molecular Diagnostics University of Warmia and Mazury in Olsztyn Olsztyn Poland
| | - I. Białobrzewski
- Chair of Systems Engineering Faculty of Engineering University of Warmia and Mazury in Olsztyn Olsztyn Poland
| | - A.M. Kocot
- Chair of Industrial and Food Microbiology Faculty of Food Science University of Warmia and Mazury in Olsztyn Olsztyn Poland
| | - J. Łaguna
- Institute of Animal Reproduction and Food Research of the Polish Academy of Sciences Olsztyn Poland
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35
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Hassan D, Omolo CA, Gannimani R, Waddad AY, Mocktar C, Rambharose S, Agrawal N, Govender T. Delivery of novel vancomycin nanoplexes for combating methicillin resistant Staphylococcus aureus (MRSA) infections. Int J Pharm 2019; 558:143-156. [PMID: 30641177 DOI: 10.1016/j.ijpharm.2019.01.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 12/31/2018] [Accepted: 01/03/2019] [Indexed: 01/01/2023]
Abstract
The development of novel antibiotic systems is needed to address the methicillin-resistant Staphylococcus aureus (MRSA) infections. The aim of the study was to explore the novel nanoplex delivery method for vancomycin (VCM) against MRSA using dextran sulfate sodium salt (DXT) as a polyelectrolyte complexing agent. Nanoplexes were formulated by the self-assembling amphiphile polyelectrolyte complexation method and characterized. The size, polydispersity index (PDI), and zeta potential (ZP) of the optimized VCM nanoplexes were 84.6 ± 4.248 nm, 0.449 ± 0.024 and -33.0 ± 4.87 mV respectively, with 90.4 ± 0.77% complexation efficiency (CE %) and 62.3 ± 0.23% drug loading. The in vitro (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide)tetrazolium (MTT) studies of the nanoplexes were found to be non-toxic against different mammalian cell lines tested and may confirm its biosafety. While the in vitro drug release studies demonstrated sustained slower release. The in silico study confirmed the spontaneous interaction of VCM with DXT in the presence of sodium chloride. A 6.24-fold enhancement was observed for VCM nanoplexes via in vitro antibacterial studies. Flow-cytometric analysis showed effective cell killing of 67% from VCM nanoplexes compared to 32.98% from the bare vancomycin at the minimum inhibitory concentration (MIC) of 1.25 μg/mL. The in vivo studies using BALB/c mouse skin infection model revealed that nanoplexes reduced MRSA burden by 2.3-folds compared to bare VCM. The novel nanoplexes have potential to be a promising delivery system to combat MRSA infections for improved treatment of bacterial infections.
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Affiliation(s)
- Daniel Hassan
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban, South Africa
| | - Calvin A Omolo
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban, South Africa
| | - Ramesh Gannimani
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban, South Africa
| | - Ayman Y Waddad
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban, South Africa
| | - Chunderika Mocktar
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban, South Africa
| | - Sanjeev Rambharose
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban, South Africa; Division of Emergency Medicine, Department of Surgery, University of Cape Town, Cape Town, South Africa
| | - Nikhil Agrawal
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban, South Africa
| | - Thirumala Govender
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban, South Africa.
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36
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Song MY, Van-Ba H, Park WS, Yoo JY, Kang HB, Kim JH, Kang SM, Kim BM, Oh MH, Ham JS. Quality Characteristics of Functional Fermented Sausages Added with Encapsulated Probiotic Bifidobacterium longum KACC 91563. Korean J Food Sci Anim Resour 2018; 38:981-994. [PMID: 30479505 PMCID: PMC6238044 DOI: 10.5851/kosfa.2018.e30] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 08/05/2018] [Accepted: 08/05/2018] [Indexed: 12/15/2022] Open
Abstract
The present study aimed at evaluating the utilization possibility of encapsulated probiotic Bifidobacterium longum for production of functional fermented sausages. The B. longum isolated from the feces samples of healthy Korean infants encapsulated with glycerol as a cryprotectant was used for fermented sausages production as a functional bacterial ingredient, and its effect was also compared with those inoculated with commercial starter culture (CSC). Results showed that most inoculated encapsulated B. longum (initial count, 5.88 Log CFU/g) could survive after 4 days fermentation (5.40 Log CFU/g), and approximately a half (2.83 Log CFU/g) of them survived in the products after 22 days of ripening. The products inoculated with encapsulated B. longum presented the lowest lipid oxidation level, while had higher total unsaturated fatty acid content and more desirable n-6/n-3 fatty acids than those inoculated with CSC or non-inoculated control. Moreover, the odor and taste scores in the samples made with B. longum were comparable to those in the treatment with CSC. The inoculation with the B. longum had no effects on the biogenic amine contents as well as did not cause defects in color or texture of the final products. Thus, the encapsulation could preserve the probiotic B. longum in the meat mixture, and the encapsulated B. longum could be used as a functional ingredient for production of healthier fermented meat products.
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Affiliation(s)
- Min-Yu Song
- Animal Products Development and Processing Division, National Institute of Animal Science, Wanju 55365, Korea
| | - Hoa Van-Ba
- Animal Products Development and Processing Division, National Institute of Animal Science, Wanju 55365, Korea
| | - Won-Seo Park
- Animal Products Development and Processing Division, National Institute of Animal Science, Wanju 55365, Korea
| | - Ja-Yeon Yoo
- Animal Products Development and Processing Division, National Institute of Animal Science, Wanju 55365, Korea
| | - Han-Byul Kang
- Animal Products Development and Processing Division, National Institute of Animal Science, Wanju 55365, Korea
| | - Jin-Hyoung Kim
- Animal Products Development and Processing Division, National Institute of Animal Science, Wanju 55365, Korea
| | - Sun-Moon Kang
- Animal Products Development and Processing Division, National Institute of Animal Science, Wanju 55365, Korea
| | - Bu-Min Kim
- Animal Products Development and Processing Division, National Institute of Animal Science, Wanju 55365, Korea
| | - Mi-Hwa Oh
- Animal Products Development and Processing Division, National Institute of Animal Science, Wanju 55365, Korea
| | - Jun-Sang Ham
- Animal Products Development and Processing Division, National Institute of Animal Science, Wanju 55365, Korea
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37
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Häffele F, Jaros D, Mende S, Rohm H, Nirschl H. Separation von Starterkulturen nach Hochdruck-Homogenisierung. CHEM-ING-TECH 2018. [DOI: 10.1002/cite.201700166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Florian Häffele
- Karlsruher Institut für Technologie; Institut für mechanische Verfahrenstechnik und Mechanik; Straße am Forum 8 76131 Karlsruhe Deutschland
| | - Doris Jaros
- Technische Universität Dresden; Professur für Lebensmitteltechnik; Bergstraße 120 01069 Dresden Deutschland
| | - Susann Mende
- Technische Universität Dresden; Professur für Lebensmitteltechnik; Bergstraße 120 01069 Dresden Deutschland
| | - Harald Rohm
- Technische Universität Dresden; Professur für Lebensmitteltechnik; Bergstraße 120 01069 Dresden Deutschland
| | - Hermann Nirschl
- Karlsruher Institut für Technologie; Institut für mechanische Verfahrenstechnik und Mechanik; Straße am Forum 8 76131 Karlsruhe Deutschland
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38
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Shu G, Wang Z, Chen L, Wan H, Chen H. Characterization of freeze-dried Lactobacillus acidophilus in goat milk powder and tablet: Optimization of the composite cryoprotectants and evaluation of storage stability at different temperature. Lebensm Wiss Technol 2018. [DOI: 10.1016/j.lwt.2017.12.013] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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39
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Effect of heat shock protein 90 against ROS-induced phospholipid oxidation. Food Chem 2018; 240:642-647. [DOI: 10.1016/j.foodchem.2017.08.005] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 06/05/2017] [Accepted: 08/01/2017] [Indexed: 12/11/2022]
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40
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Jaros D, Mende S, Häffele F, Nachtigall C, Nirschl H, Rohm H. Shear treatment of starter culture medium improves separation behavior of Streptococcus thermophilus cells. Eng Life Sci 2017; 18:62-69. [PMID: 32624862 DOI: 10.1002/elsc.201700121] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 08/31/2017] [Accepted: 09/25/2017] [Indexed: 11/06/2022] Open
Abstract
A central step in the production of starter cultures is the separation of the cells from the fermentation medium, which is usually achieved by disk centrifuges. In case of microorganisms which produce exopolysaccharides (e.g., various strains of lactic acid bacteria), the properties of the respective exopolysaccharides may interfere with this separation step. By using six strains of Streptococcus thermophilus the hypothesis was tested that a shear treatment of the fermented culture medium improves subsequent cell separation markedly. Depending on the type of exopolysaccharides (freely present in the medium, or as capsules around the cells) an energy input of up to 2.5 kJ/mL generated with an Ultra-Turrax affected cell chain length of the strains and viscosity of fermentation medium differently. For bacteria producing capsular exopolysaccharides, space- and time-resolved centrifugation experiments revealed an increase of sedimentation velocity after shear treatment. In general, viability of the microorganisms, detected by flow cytometry measurements and fermentation experiments, was not affected by the shearing procedure. The results therefore indicate that strain-targeted shearing is helpful to improve the separability of cells from the fermented media.
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Affiliation(s)
- Doris Jaros
- Chair of Food Engineering Technische Universität Dresden Dresden Germany
| | - Susann Mende
- Chair of Food Engineering Technische Universität Dresden Dresden Germany
| | - Florian Häffele
- Institute of Mechanical Process Engineering and Mechanics Karlsruhe Institute of Technology Karlsruhe Germany
| | - Carsten Nachtigall
- Chair of Food Engineering Technische Universität Dresden Dresden Germany
| | - Hermann Nirschl
- Institute of Mechanical Process Engineering and Mechanics Karlsruhe Institute of Technology Karlsruhe Germany
| | - Harald Rohm
- Chair of Food Engineering Technische Universität Dresden Dresden Germany
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41
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Bernucci BS, Loures CM, Lopes SC, Oliveira MC, Sabino AP, Vilela JM, Andrade MS, Lacerda IC, Nicoli JR, Oliveira ES. Effect of microencapsulation conditions on the viability and functionality of Bifidobacterium longum 51A. Lebensm Wiss Technol 2017. [DOI: 10.1016/j.lwt.2017.02.036] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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42
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Protection mechanism of alginate microcapsules with different mechanical strength for Lactobacillus plantarum ST-III. Food Hydrocoll 2017. [DOI: 10.1016/j.foodhyd.2016.12.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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43
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de Almada CN, Almada CN, Martinez RC, Sant'Ana AS. Paraprobiotics: Evidences on their ability to modify biological responses, inactivation methods and perspectives on their application in foods. Trends Food Sci Technol 2016. [DOI: 10.1016/j.tifs.2016.09.011] [Citation(s) in RCA: 165] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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44
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Olszewska MA, Kocot AM, Nynca A, Łaniewska-Trokenheim Ł. Utilization of physiological and taxonomic fluorescent probes to study Lactobacilli cells and response to pH challenge. Microbiol Res 2016; 192:239-246. [DOI: 10.1016/j.micres.2016.07.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 05/29/2016] [Accepted: 07/31/2016] [Indexed: 11/29/2022]
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45
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Qu F, Zhao M, Fang Y, Nishinari K, Phillips GO, Wu Z, Chen C. Effect of acidification on the protection of alginate-encapsulated probiotic based on emulsification/internal gelation. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2016; 96:4358-4366. [PMID: 26804612 DOI: 10.1002/jsfa.7645] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 11/29/2015] [Accepted: 01/19/2016] [Indexed: 06/05/2023]
Abstract
BACKGROUND The method of emulsification/internal gelation is commonly used to prepare alginate microspheres for lactic acid bacteria (LAB). This paper focused on the influence of acidification parameters, i.e. acid/Ca molar ratio and acidification time, on the physical properties and cell protection efficiency of microspheres and their correlations. RESULTS With increasing acid/Ca molar ratio and acidification time, the average diameter of microspheres decreased and their mechanical strength increased. Interestingly, wet alginate microspheres shrank in simulated gastric juice (SGJ) while they swelled in bile salts solution (BS). The shrinkage or swelling ratio decreased with increasing mechanical strength. Correlation analysis showed that the encapsulated cell survivals in both SGJ and BS were positively correlated with the mechanical strength of microspheres but negatively with the shrinkage or swelling ratio. BacLight LIVE/DEAD assay suggested that the viability of encapsulated cells in fresh, SGJ-treated and BS-treated microspheres was closely related to cell membrane integrity. CONCLUSION Acidification is a key step during microsphere preparation, which strongly affected the physical properties of alginate microspheres, resulting in different cell protection efficiency. The resulting well-protected LAB can be applied in probiotics foods. © 2016 Society of Chemical Industry.
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Affiliation(s)
- Fangning Qu
- Glyn O. Phillips Hydrocolloids Research Centre at HUT, School of Food and Pharmaceutical Engineering, Faculty of Light Industry, Hubei University of Technology, Wuhan, 430068, China
| | - Meng Zhao
- Glyn O. Phillips Hydrocolloids Research Centre at HUT, School of Food and Pharmaceutical Engineering, Faculty of Light Industry, Hubei University of Technology, Wuhan, 430068, China
- Hubei Collaborative Innovation Centre for Industrial Fermentation, Hubei University of Technology, Wuhan, 430068, China
| | - Yapeng Fang
- Glyn O. Phillips Hydrocolloids Research Centre at HUT, School of Food and Pharmaceutical Engineering, Faculty of Light Industry, Hubei University of Technology, Wuhan, 430068, China
- Hubei Collaborative Innovation Centre for Industrial Fermentation, Hubei University of Technology, Wuhan, 430068, China
| | - Katsuyoshi Nishinari
- Glyn O. Phillips Hydrocolloids Research Centre at HUT, School of Food and Pharmaceutical Engineering, Faculty of Light Industry, Hubei University of Technology, Wuhan, 430068, China
| | - Glyn O Phillips
- Phillips Hydrocolloid Research Centre, Glyndwr University, Plas Coch, Mold Road, Wrexham, LL11 2AW, UK
| | - Zhengjun Wu
- State Key Laboratory of Dairy Biotechnology, Technology Center of Bright Dairy & Food Co., Ltd, 1518 Jiangchangxi Road, Shanghai, 200436, China
| | - Chen Chen
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, No. 100 HaiQuan Road, Shanghai, 201418, China
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Gao L, Li Y, Han R. Cell wall reconstruction and DNA damage repair play a key role in the improved salt tolerance effects of He-Ne laser irradiation in tall fescue seedlings. Biosci Biotechnol Biochem 2016; 80:682-93. [DOI: 10.1080/09168451.2015.1101335] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Abstract
The improved salt tolerance effects of He–Ne laser were further studied through the estimation of ROS levels, cell viability, DNA damage phenomena, physicochemical properties, and monosaccharide compositions of cell wall polysaccharides in tall fescue seedlings. Salt stress produced deleterious effects on seedlings growth and development. ROS levels and genomic DNA damage were markedly increased compared with controls. Physicochemical activities and monosaccharide proportions of cell wall polysaccharide were also pronouncedly altered. He–Ne laser irradiation improved plant growth retardation via increasing cell viability and reverting physicochemical parameters. According to the results of Fourier transform infrared (FTIR) scanning spectra and DNA apopladder analysis, He–Ne laser was showed to efficiently ameliorate cell wall polysaccharide damage and DNA fragmentation phenomena. The treatment with DNA synthesis inhibitor further demonstrated that DNA damage repair was correlated with the improvement effects of the laser. Therefore, our data illustrated that He–Ne laser irradiation resulted in cell wall reconstruction and genomic DNA injury repair in vivo in salt-stressed seedlings, then enhanced salt tolerance probably via interactions between plant cell wall and related resistance gene expression pattern.
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Affiliation(s)
- Limei Gao
- College of Life Science, Shanxi Normal University, Linfen, P. R. China
- Higher Education Key Laboratory of Plant Molecular and Environmental Stress Response, Shanxi Normal University, Linfen, P. R. China
| | - Yongfeng Li
- Higher Education Key Laboratory of Plant Molecular and Environmental Stress Response, Shanxi Normal University, Linfen, P. R. China
- Analysis and Testing Center, Shanxi Normal University, Linfen, P. R. China
| | - Rong Han
- College of Life Science, Shanxi Normal University, Linfen, P. R. China
- Higher Education Key Laboratory of Plant Molecular and Environmental Stress Response, Shanxi Normal University, Linfen, P. R. China
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Gandhi A, Shah NP. Effect of salt stress on morphology and membrane composition of Lactobacillus acidophilus, Lactobacillus casei, and Bifidobacterium bifidum, and their adhesion to human intestinal epithelial-like Caco-2 cells. J Dairy Sci 2016; 99:2594-2605. [DOI: 10.3168/jds.2015-10718] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 12/30/2015] [Indexed: 11/19/2022]
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Gandhi A, Shah NP. Salt Reduction in a Model High-Salt Akawi Cheese: Effects on Bacterial Activity, pH, Moisture, Potential Bioactive Peptides, Amino Acids, and Growth of Human Colon Cells. J Food Sci 2016; 81:H991-H1000. [DOI: 10.1111/1750-3841.13260] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Revised: 12/13/2015] [Accepted: 01/31/2016] [Indexed: 11/26/2022]
Affiliation(s)
- Akanksha Gandhi
- Food and Nutritional Science, School of Biological Sciences; The Univ. of Hong Kong; Pokfulam Road Hong Kong
| | - Nagendra P. Shah
- Food and Nutritional Science, School of Biological Sciences; The Univ. of Hong Kong; Pokfulam Road Hong Kong
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El Kadri H, Overton T, Bakalis S, Gkatzionis K. Understanding and controlling the release mechanism of Escherichia coli in double W1/O/W2emulsion globules in the presence of NaCl in the W2phase. RSC Adv 2015. [DOI: 10.1039/c5ra24469b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The results suggest that release of bacteria from W1/O/W2emulsion can be controlled by varying the formulation. Release occurs due to oil globule bursting independent to diffusion.
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Affiliation(s)
| | - Tim Overton
- School of Chemical Engineering
- UK
- Institute of Microbiology & Infection University of Birmingham
- UK
| | | | - Konstantinos Gkatzionis
- School of Chemical Engineering
- UK
- Institute of Microbiology & Infection University of Birmingham
- UK
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