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Milani G, Belloso Daza MV, Cortimiglia C, Bassi D, Cocconcelli PS. Genome engineering of Stx1-and Stx2-converting bacteriophages unveils the virulence of the dairy isolate Escherichia coli O174:H2 strain UC4224. Front Microbiol 2023; 14:1156375. [PMID: 37426006 PMCID: PMC10326431 DOI: 10.3389/fmicb.2023.1156375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 06/06/2023] [Indexed: 07/11/2023] Open
Abstract
The past decade witnessed the emergence in Shiga toxin-producing Escherichia coli (STEC) infections linked to the consumption of unpasteurized milk and raw milk cheese. The virulence of STEC is primarily attributed to the presence of Shiga toxin genes (stx1 and stx2) carried by Stx-converting bacteriophages, along with the intimin gene eae. Most of the available information pertains to the "Top 7" serotypes associated with STEC infections. The objectives of this study were to characterize and investigate the pathogenicity potential of E. coli UC4224, a STEC O174:H2 strain isolated from semi-hard raw milk cheese and to develop surrogate strains with reduced virulence for use in food-related studies. Complete genome sequence analysis of E. coli UC4224 unveiled the presence of a Stx1a bacteriophage, a Stx2a bacteriophage, the Locus of Adhesion and Autoaggregation (LAA) pathogenicity island, plasmid-encoded virulence genes, and other colonization facilitators. In the Galleria mellonella animal model, E. coli UC4224 demonstrated high pathogenicity potential with an LD50 of 6 CFU/10 μL. Upon engineering E. coli UC4224 to generate single and double mutant derivatives by inactivating stx1a and/or stx2a genes, the LD50 increased by approximately 1 Log-dose in the single mutants and 2 Log-doses in the double mutants. However, infectivity was not completely abolished, suggesting the involvement of other virulence factors contributing to the pathogenicity of STEC O174:H2. Considering the possibility of raw milk cheese serving as a reservoir for STEC, cheesemaking model was developed to evaluate the survival of UC4224 and the adequacy of the respective mutants as reduced-virulence surrogates. All tested strains exhibited the ability to survive the curd cooking step at 48°C and multiplied (3.4 Log CFU) in cheese within the subsequent 24 h. These findings indicate that genomic engineering did not exert any unintended effect on the double stx1-stx2 mutant behaviour, making it as a suitable less-virulent surrogate for conducting studies during food processing.
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Pinto L, Tapia-Rodríguez MR, Baruzzi F, Ayala-Zavala JF. Plant Antimicrobials for Food Quality and Safety: Recent Views and Future Challenges. Foods 2023; 12:2315. [PMID: 37372527 DOI: 10.3390/foods12122315] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/03/2023] [Accepted: 06/05/2023] [Indexed: 06/29/2023] Open
Abstract
The increasing demand for natural, safe, and sustainable food preservation methods drove research towards the use of plant antimicrobials as an alternative to synthetic preservatives. This review article comprehensively discussed the potential applications of plant extracts, essential oils, and their compounds as antimicrobial agents in the food industry. The antimicrobial properties of several plant-derived substances against foodborne pathogens and spoilage microorganisms, along with their modes of action, factors affecting their efficacy, and potential negative sensory impacts, were presented. The review highlighted the synergistic or additive effects displayed by combinations of plant antimicrobials, as well as the successful integration of plant extracts with food technologies ensuring an improved hurdle effect, which can enhance food safety and shelf life. The review likewise emphasized the need for further research in fields such as mode of action, optimized formulations, sensory properties, safety assessment, regulatory aspects, eco-friendly production methods, and consumer education. By addressing these gaps, plant antimicrobials can pave the way for more effective, safe, and sustainable food preservation strategies in the future.
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Affiliation(s)
- Loris Pinto
- Institute of Sciences of Food Production, National Research Council of Italy, Via G. Amendola 122/O, 70126 Bari, Italy
| | - Melvin R Tapia-Rodríguez
- Departamento de Biotecnología y Ciencias Alimentarias, Instituto Tecnológico de Sonora, 5 de Febrero 818 sur, Col. Centro, Ciudad Obregón, Obregón 85000, Sonora, Mexico
| | - Federico Baruzzi
- Institute of Sciences of Food Production, National Research Council of Italy, Via G. Amendola 122/O, 70126 Bari, Italy
| | - Jesús Fernando Ayala-Zavala
- Centro de Investigación en Alimentación y Desarrollo, A.C, Carretera Gustavo Enrique Astiazarán Rosas 46, Hermosillo 83304, Sonora, Mexico
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3
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Li B, Chang G, Dang Q, Liu C, Song H, Chen A, Yang M, Shi L, Zhang B, Cha D. Preparation and characterization of antibacterial, antioxidant, and biocompatible p-coumaric acid modified quaternized chitosan nanoparticles. Int J Biol Macromol 2023:125087. [PMID: 37247710 DOI: 10.1016/j.ijbiomac.2023.125087] [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: 03/28/2023] [Revised: 05/11/2023] [Accepted: 05/23/2023] [Indexed: 05/31/2023]
Abstract
To fabricate multifunctional nanoparticles (NPs) based on chitosan (CS) derivative, we first prepared quaternized CS (2-hydroxypropyltrimethyl ammonium chloride CS, HTCC) via a one-step approach, then synthesized p-coumaric acid (p-CA) modified HTCC (HTCC-CA) for the first time through amide reaction, and finally fabricated a series of NPs (HTCC-CA NPs) using HTCC-CAs with different substitution degrees and sodium tripolyphosphate (TPP) by ionic gelation. Newly-prepared HTCC and HTCC-CAs were characterized by FT-IR, 1H NMR, elemental analysis (EA), full-wavelength UV scanning, silver nitrate titration, and Folin-Ciocalteu methods. DLS and TEM results demonstrated that three selected HTCC-CA NPs had moderate size (< 350 nm), good dispersion (PDI < 0.4), and positive zeta potential (11-20 mV). The HTCC-CA NPs had high antibacterial activity against six bacterial strains, and the minimum inhibitory concentration (MIC) values were almost the same as the minimum bactericidal concentration (MBC) values (250-1000 μg/mL). Also, the HTCC-CA NPs had good antioxidation (radical scavenging ratio > 65 %) and low cytotoxicity (relative cell viability >80 %) to the tested cells. Totally, HTCC-CA NPs with high antibacterial activity, great antioxidation, and low cytotoxicity might serve as new biomedical materials for promoting skin wound healing.
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Affiliation(s)
- Boyuan Li
- College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China
| | - Guozhu Chang
- College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China
| | - Qifeng Dang
- College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China
| | - Chengsheng Liu
- College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China.
| | - Hao Song
- College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China
| | - Aoqing Chen
- College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China
| | - Meng Yang
- College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China
| | - Lufei Shi
- College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China
| | - Bonian Zhang
- Qingdao Aorun Biotechnology Co., Ltd., Room 602, Century Mansion, 39 Donghaixi Road, Qingdao 266071, PR China
| | - Dongsu Cha
- The Graduate School of Biotechnology, Korea University, Seoul 136-701, South Korea
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4
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Wan Y, Wang X, Yang L, Li Q, Zheng X, Bai T, Wang X. Antibacterial Activity of Juglone Revealed in a Wound Model of Staphylococcus aureus Infection. Int J Mol Sci 2023; 24:ijms24043931. [PMID: 36835350 PMCID: PMC9963570 DOI: 10.3390/ijms24043931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/17/2023] [Accepted: 02/07/2023] [Indexed: 02/18/2023] Open
Abstract
A serious problem currently facing the field of wound healing is bacterial infection, especially Staphylococcus aureus (S. aureus) infection. Although the application of antibiotics has achieved good effects, their irregular use has resulted in the emergence of drug-resistant strains. It is thus the purpose of this study to analyze whether the naturally extracted phenolic compound, juglone, can inhibit S. aureus in wound infection. The results show that the minimum inhibitory concentration (MIC) of juglone against S. aureus was 1000 μg/mL. Juglone inhibited the growth of S. aureus by inhibiting membrane integrity and causing protein leakage. At sub-inhibitory concentrations, juglone inhibited biofilm formation, the expression of α-hemolysin, the hemolytic activity, and the production of proteases and lipases of S. aureus. When applied to infected wounds in Kunming mice, juglone (50 μL juglone with a concentration of 1000 μg/mL) significantly inhibited the number of S. aureus and had a significant inhibitory effect on the expression of inflammatory mediators (TNF-α, IL-6 and IL-1β). Moreover, the juglone-treated group promoted wound healing. At the same time, in animal toxicity experiments, juglone had no obvious toxic effects on the main tissues and organs of mice, indicating that juglone has good biocompatibility and has the potential to be used in the treatment of wounds infected with S. aureus.
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Ordoñez R, Atarés L, Chiralt A. Biodegradable active materials containing phenolic acids for food packaging applications. Compr Rev Food Sci Food Saf 2022; 21:3910-3930. [PMID: 35912666 DOI: 10.1111/1541-4337.13011] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 06/05/2022] [Accepted: 06/30/2022] [Indexed: 01/28/2023]
Abstract
The development of new materials for food packaging applications is necessary to reduce the excessive use of disposable plastics and their environmental impact. Biodegradable polymers represent an alternative means of mitigating the problem. To add value to biodegradable materials and to enhance food preservation, the incorporation of active compounds into the polymer matrix is an affordable strategy. Phenolic acids are plant metabolites that can be found in multiple plant extracts and exhibit antioxidant and antimicrobial properties. Compared with other natural active compounds, such as essential oils, phenolic acids do not present a high sensorial impact while exhibiting similar minimal inhibitory concentrations against different bacteria. This study summarizes and discusses recent studies about the potential of both phenolic acids/plant extracts and biodegradable polymers as active food packaging materials, their properties, interactions, and the factors that could affect their antimicrobial efficiency. The molecular structure of phenolic acids greatly affects their potential antioxidant and antimicrobial capacity, as well as their specific interactions with polymer matrices and food substrates. These interactions, in turn, can lead to plasticizing or cross-linking effects. In the present study, the antioxidant and antimicrobial properties of different biodegradable films with phenolic acids have been described, as well as the main factors affecting the active properties of these films as useful materials for active packaging development. More studies applying these active materials in real foods are required.
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Affiliation(s)
- Ramón Ordoñez
- Instituto Universitario de Ingeniería de Alimentos para el Desarrollo, Universitat Politècnica de València, Valencia, Spain
| | - Lorena Atarés
- Instituto Universitario de Ingeniería de Alimentos para el Desarrollo, Universitat Politècnica de València, Valencia, Spain
| | - Amparo Chiralt
- Instituto Universitario de Ingeniería de Alimentos para el Desarrollo, Universitat Politècnica de València, Valencia, Spain
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Aminzare M, Hashemi M, Afshari A, Mokhtari M, Noori SMA. Impact of microencapsulated
Ziziphora tenuior
essential oil and orange fiber as natural‐functional additives on chemical and microbial qualities of cooked beef sausage. Food Sci Nutr 2022; 10:3424-3435. [PMID: 36249980 PMCID: PMC9548366 DOI: 10.1002/fsn3.2943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 04/01/2022] [Accepted: 04/30/2022] [Indexed: 12/03/2022] Open
Abstract
The aim of the current study was to investigate the suitability of Ziziphora tenuior essential oil (ZEO) as a preservative. For this purpose, the effect of free and microencapsulated ZEO, combined with orange fiber, was determined on the chemical and microbial qualities of cooked beef sausage. In this study, modified starch was used for encapsulation of essential oil, and subsequently, 0.5% ZEO and 1% orange fiber were used for preparing cooked beef sausages during 60 days of storage at 4°C. To assess the microbial quality of samples, total viable count (TVC), psychrophilic count (PSY), and lactic acid bacteria (LAB) were analyzed. Furthermore, peroxide value (PV) and thiobarbituric acid reactive substances (TBARS) were tested to examine lipid oxidation. The most components of ZEO were pulegone (47.12%), isomenthone (14.57%), and 1,8‐cineole (12.84%) according to GC–MS analysis. The reducing power, DPPH radical scavenging activity, MIC, and MBC of ZEO were 16.44 (EC50), 8.36 (IC50), 0.625–2.5, and 1.25–5 mg/ml, respectively. Moreover, sausage containing 0.5% microencapsulated ZEO in combination with 1% orange fiber showed the best results with the following values (p ≤ .05): TVC (3.69 log CFU/g), PSY (3.51 log CFU/g), LAB (3.1 log CFU/g), PV (10.41 meq/kg lipid), and TBARS (3.1 mg MDA/kg). This is due to the antimicrobial and antioxidant properties of microencapsulated essential oil. Therefore, the results of the present study can be applied in the meat industries as a new natural preservation method.
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Affiliation(s)
- Majid Aminzare
- Department of Food Safety and Hygiene, School of Public Health Zanjan University of Medical Sciences Zanjan Iran
| | - Mohammad Hashemi
- Medical Toxicology Research Center Mashhad University of Medical Sciences Mashhad Iran
- Department of Nutrition, Faculty of Medicine Mashhad University of Medical Sciences Mashhad Iran
| | - Asma Afshari
- Department of Nutrition, Faculty of Medicine Mashhad University of Medical Sciences Mashhad Iran
| | - Mohammad Hossein Mokhtari
- Department of Food and Drug Control, School of Pharmacy Ahvaz Jundishapur University of Medical Sciences Ahvaz Iran
| | - Seyyed Mohammad Ali Noori
- Toxicology Research Center, Medical Basic Sciences Research Institute Ahvaz Jundishapur University of Medical Sciences Ahvaz Iran
- Department of Nutrition, School of Allied Medical Sciences Ahvaz Jundishapur University of Medical Sciences Ahvaz Iran
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7
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Development of Healthier and Functional Dry Fermented Sausages: Present and Future. Foods 2022; 11:foods11081128. [PMID: 35454715 PMCID: PMC9031353 DOI: 10.3390/foods11081128] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 04/05/2022] [Accepted: 04/12/2022] [Indexed: 12/19/2022] Open
Abstract
In recent years, consumer perception about the healthiness of meat products has changed. In this scenario, the meat industry and the scientific and technological areas have put their efforts into improving meat products and achieving healthier and functional formulations that meet the demands of today’s market and consumers. This article aims to review the current functional fermented meat products, especially on sausage development. Firstly, an emphasis is given to reducing and replacing traditional ingredients associated with increased risk to consumer’s health (sodium, fat, and nitrites), adding functional components (prebiotics, probiotics, symbiotics, and polyphenols), and inducing health benefits. Secondly, a look at future fermented sausages is provided by mentioning emerging strategies to produce innovative healthier and functional meat products. Additional recommendations were also included to assist researchers in further development of healthier and functional sausages.
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8
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Biocontrol Approaches against Escherichia coli O157:H7 in Foods. Foods 2022; 11:foods11050756. [PMID: 35267389 PMCID: PMC8909014 DOI: 10.3390/foods11050756] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 02/24/2022] [Accepted: 03/02/2022] [Indexed: 12/11/2022] Open
Abstract
Shiga-toxin-producing Escherichia coli O157:H7 is a well-known water- and food-borne zoonotic pathogen that can cause gastroenteritis in humans. It threatens the health of millions of people each year; several outbreaks of E. coli O157:H7 infections have been linked to the consumption of contaminated plant foods (e.g., lettuce, spinach, tomato, and fresh fruits) and beef-based products. To control E. coli O157:H7 in foods, several physical (e.g., irradiation, pasteurization, pulsed electric field, and high-pressure processing) and chemical (e.g., using peroxyacetic acid; chlorine dioxide; sodium hypochlorite; and organic acids, such as acetic, lactic, and citric) methods have been widely used. Although the methods are quite effective, they are not applicable to all foods and carry intrinsic disadvantages (alteration of sensory properties, toxicity, etc.). Therefore, the development of safe and effective alternative methods has gained increased attention recently. Biocontrol agents, including bacteriophages, probiotics, antagonistic bacteria, plant-derived natural compounds, bacteriocins, endolysins, and enzymes, are rapidly emerging as effective, selective, relatively safe for human consumption, and environmentally friendly alternatives. This paper summarizes advances in the application of biocontrol agents for E. coli O157:H7 control in foods.
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9
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Hernández-García E, Vargas M, Chiralt A, González-Martínez C. Biodegradation of PLA-PHBV Blend Films as Affected by the Incorporation of Different Phenolic Acids. Foods 2022; 11:foods11020243. [PMID: 35053974 PMCID: PMC8774519 DOI: 10.3390/foods11020243] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 12/30/2021] [Accepted: 01/11/2022] [Indexed: 02/01/2023] Open
Abstract
Films based on a 75:25 polylactic acid (PLA) and Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) blend, containing 2% (w/w) of different phenolic acids (ferulic, p-coumaric or protocatechuic acid), and plasticised with 15 wt. % polyethylene glycol (PEG 1000), were obtained by melt blending and compression moulding. The disintegration and biodegradation of the film under thermophilic composting conditions was studied throughout 35 and 45 days, respectively, in order to analyse the effect of the incorporation of the antimicrobial phenolic acids into the films. Sample mass loss, thermo-degradation behaviour and visual appearance were analysed at different times of the composting period. No effect of phenolic acids was observed on the film disintegration pattern, and the films were completely disintegrated at the end of the composting period. The biodegradation analysis through the CO2 measurements revealed that PLA-PHBV blend films without phenolic acids, and with ferulic acid, completely biodegraded after 20 composting days, while p-coumaric and protocatechuic slightly retarded full biodegradation (21 and 26 days, respectively). Phenolic acids mainly extended the induction period, especially protocatechuic acid. PLA-PHBV blend films with potential antimicrobial activity could be used to preserve fresh foodstuff susceptible to microbial spoilage, with their biodegradation under composting conditions being ensured.
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Cinnamon and Eucalyptus Oils Suppress the Inflammation Induced by Lipopolysaccharide In Vivo. Molecules 2021; 26:molecules26237410. [PMID: 34885991 PMCID: PMC8659246 DOI: 10.3390/molecules26237410] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 11/12/2021] [Accepted: 11/23/2021] [Indexed: 12/16/2022] Open
Abstract
Inflammation caused by bacterial lipopolysaccharide (LPS) disrupts epithelial homeostasis and threatens both human and animal health. Therefore, the discovery and development of new anti-inflammatory drugs is urgently required. Plant-derived essential oils (EOs) have good antioxidant and anti-inflammatory activities. Thus, this study aims to screen and evaluate the effects of cinnamon oil and eucalyptus oil on anti-inflammatory activities. The associated evaluation indicators include body weight gain, visceral edema coefficient, superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), malondialdehyde (MDA), nitrogen monoxide (NO), interleukin-6 (IL-6), interleukin-10 (IL-10), tumor necrosis factor alpha (TNF-α), Urea, Crea, ALT, TLR4, MyD88, NF-κB, IκB-α, iNOS, and Mn-SOD. In addition, tissue injury was determined by H&E staining. The results revealed that cinnamon oil and eucalyptus oil suppressed inflammation by decreasing SOD, TNF-α, and NF-κB levels. We also found that cinnamon oil increased the level of GSH-Px, MDA, and Mn-SOD, as well as the visceral edema coefficient of the kidney and liver. Altogether, these findings illustrated that cinnamon oil and eucalyptus oil exhibited wide antioxidant and anti-inflammatory activities against LPS-induced inflammation.
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11
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Hao Y, Kang J, Yang R, Li H, Cui H, Bai H, Tsitsilin A, Li J, Shi L. Multidimensional exploration of essential oils generated via eight oregano cultivars: Compositions, chemodiversities, and antibacterial capacities. Food Chem 2021; 374:131629. [PMID: 34865929 DOI: 10.1016/j.foodchem.2021.131629] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 11/08/2021] [Accepted: 11/14/2021] [Indexed: 12/13/2022]
Abstract
Numerous species of Origanum (Lamiaceae) have been widely used as spices to extend the shelf life of foods. Essential oils extracted from this genus have attracted much attention owing to their potential applications as bactericides. Here, we evaluated the chemical compositions of eight oregano essential oils (OEOs) using gas chromatography-mass spectrometry and assessed their antibacterial activities. The chemical compositions of OEOs were affected by the cultivar factor, and seven common compounds, including carvacrol, were identified among eight OEOs. Partial least squares discriminant analysis enabled the distinction of three groups among these OEOs, as characterized by the proportions of carvacrol, thymol, and sesquiterpenes. OEOs effectively inhibited Escherichia coli and Staphylococcus aureus with varying antibacterial activities. Spearman correlation network highlighted core antibacterial contributors in the chemical profiles of OEOs. Our results revealed that the bacteriostatic effects of OEOs could be explained by core compounds and their synergistic effects.
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Affiliation(s)
- Yuanpeng Hao
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Jiamu Kang
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, PR China
| | - Rui Yang
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Hui Li
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, PR China
| | - Hongxia Cui
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, PR China
| | - Hongtong Bai
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, PR China
| | - Andrey Tsitsilin
- All-Russian Research Institute of Medicinal and Aromatic Plants, Moscow 117216, Russia
| | - Jingyi Li
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, PR China.
| | - Lei Shi
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, PR China.
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12
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Evran S, Tayyarcan EK, Acar-Soykut E, Guven B, Durakli-Velioglu S, Boyaci IH. Investigation of phage and molasses interactions for the biocontrol of E. coli O157:H7. Can J Microbiol 2021; 68:1-11. [PMID: 34529921 DOI: 10.1139/cjm-2021-0211] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Resistance to antibiotics is one of the most critical health problems in the world. Therefore, finding new treatment methods to be used as alternatives to antibiotics has become a priority for researchers. Similar to phages, certain products containing antimicrobial components, such as molasses, are widely used to eliminate resistant bacteria. Molasses has a strong antimicrobial effect on bacterial cells, and this effect is thought to be due to the breakdown of the cytoplasmic cell membrane and cell proteins of the polyphenols in molasses. In the present study, phage-molasses interactions were investigated to examine the effects of concomitant use. It was found that molasses samples increased the size of phage plaques by up to 3-fold, and MIC and 1/2 × MIC concentrations of molasses increased the burst size of phages. Although no synergistic effect was found between the phage and molasses, the antimicrobial activities of the components and the effect of molasses on phage activity were demonstrated.
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Affiliation(s)
- Sefika Evran
- Department of Food Engineering, Beytepe, Hacettepe University, Ankara, Turkey
| | | | - Esra Acar-Soykut
- Yeniçağa Yaşar Çelik Vocational School, Bolu Abant İzzet Baysal University, Bolu, Turkey
| | - Burcu Guven
- Department of Food Engineering, Beytepe, Hacettepe University, Ankara, Turkey
| | - Serap Durakli-Velioglu
- Department of Food Engineering, Faculty of Agriculture, Tekirdag Namik Kemal University, Tekirdağ, Turkey
| | - Ismail Hakki Boyaci
- Department of Food Engineering, Beytepe, Hacettepe University, Ankara, Turkey
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13
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Corrêa JAF, Santos JVGD, Evangelista AG, Pinto ACSM, Macedo REFD, Luciano FB. Combined application of phenolic acids and essential oil components against Salmonella Enteritidis and Listeria monocytogenes in vitro and in ready-to-eat cooked ham. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111881] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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14
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Insights into the current evidence on the effects of essential oils toward beneficial microorganisms in foods with a special emphasis to lactic acid bacteria – A review. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.06.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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15
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Ordoñez R, Atarés L, Chiralt A. Physicochemical and antimicrobial properties of cassava starch films with ferulic or cinnamic acid. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111242] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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16
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Hurdle Effects of Ethanolic Plant Extracts with Antimicrobials Commonly Used in Food against Foodborne Pathogenic Escherichia coli. MICROBIOLOGY RESEARCH 2021. [DOI: 10.3390/microbiolres12020020] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Escherichia coli (E. coli) O157:H7 is a major foodborne pathogen that causes severe human infections. Plant extracts, glycine, and sodium acetate (NaOAc) exert antimicrobial effects that can be used to control pathogenic E. coli. However, their combinations have not been investigated. Thus, this study investigates the combination of ethanolic plant extracts with glycine and NaOAc against E. coli at various pH and temperature levels. Clove and rosemary extracts exhibited significant (p ≤ 0.05) antimicrobial activity against E. coli. At neutral pH, the combination of plant extracts with 1.0% glycine or 0.1% NaOAc reduced the minimum inhibitory concentration of clove from 0.4% to 0.2%; at pH 5.5, clove (0.1%) and rosemary (0.2%) extracts supplemented with NaOAc (0.1%) showed an additive effect. The population of E. coli O157:H7 in phosphate-buffered saline with 0.2% clove extract, 2% glycine, and 2% NaOAc showed a more than 5 log reduction after incubation at 15 °C for 96 h, while the combination of 0.1% clove extract with 2% NaOAc at pH 5.5 completely inhibited E. coli within 24 h at 35 °C. Thus, the combination of plant extracts with glycine and NaOAc could serve as a promising hurdle technology in controlling the growth of E. coli.
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Use of Starter Cultures in Foods from Animal Origin to Improve Their Safety. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18052544. [PMID: 33806611 PMCID: PMC7967642 DOI: 10.3390/ijerph18052544] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 02/25/2021] [Accepted: 02/28/2021] [Indexed: 01/30/2023]
Abstract
Starter cultures can be defined as preparations with a large number of cells that include a single type or a mixture of two or more microorganisms that are added to foods in order to take advantage of the compounds or products derived from their metabolism or enzymatic activity. In foods from animal origin, starter cultures are widely used in the dairy industry for cheese, yogurt and other fermented dairy products, in the meat industry, mainly for sausage manufacture, and in the fishery industry for fermented fish products. Usually, microorganisms selected as starter culture are isolated from the native microbiota of traditional products since they are well adapted to the environmental conditions of food processing and are responsible to confer specific appearance, texture, aroma and flavour characteristics. The main function of starter cultures used in food from animal origin, mainly represented by lactic acid bacteria, consists in the rapid production of lactic acid, which causes a reduction in pH, inhibiting the growth of pathogenic and spoilage microorganisms, increasing the shelf-life of fermented foods. Also, production of other metabolites (e.g., lactic acid, acetic acid, propionic acid, benzoic acid, hydrogen peroxide or bacteriocins) improves the safety of foods. Since starter cultures have become the predominant microbiota, it allows food processors to control the fermentation processes, excluding the undesirable flora and decreasing hygienic and manufacturing risks due to deficiencies of microbial origin. Also, stater cultures play an important role in the chemical safety of fermented foods by reduction of biogenic amine and polycyclic aromatic hydrocarbons contents. The present review discusses how starter cultures contribute to improve the microbiological and chemical safety in products of animal origin, namely meat, dairy and fishery products.
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Evangelista AG, Corrêa JAF, Pinto ACSM, Luciano FB. The impact of essential oils on antibiotic use in animal production regarding antimicrobial resistance - a review. Crit Rev Food Sci Nutr 2021; 62:5267-5283. [PMID: 33554635 DOI: 10.1080/10408398.2021.1883548] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Population growth directly affects the global food supply, demanding a higher production efficiency without farmland expansion - in view of limited land resources and biodiversity loss worldwide. In such scenario, intensive agriculture practices have been widely used. A commonly applied method to maximize yield in animal production is the use of subtherapeutic doses of antibiotics as growth promoters. Because of the strong antibiotic selection pressure generated, the intense use of antibiotic growth promoters (AGP) has been associated to the rise of antimicrobial resistance (AMR). Also, cross-resistance can occur, leading to the emergence of multidrug-resistant pathogens and limiting treatment options in both human and animal health. Thereon, alternatives have been studied to replace AGP in animal production. Among such alternatives, essential oils and essential oil components (EOC) stand out positively from others due to, besides antimicrobial effectiveness, improving zootechnical indexes and modulating genes involved in resistance mechanisms. This review summarizes recent studies in essential oils and EOC for zoonotic bacteria control, providing detailed information about the molecular-level effects of their use in regard to AMR, and identifying important gaps to be filled within the animal production area.
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Affiliation(s)
- Alberto Gonçalves Evangelista
- Graduate Program in Animal Science, Pontifical Catholic University of Paraná, Prado Velho - Curitiba, Paraná, Brazil
| | - Jessica Audrey Feijó Corrêa
- Graduate Program in Animal Science, Pontifical Catholic University of Paraná, Prado Velho - Curitiba, Paraná, Brazil
| | | | - Fernando Bittencourt Luciano
- Graduate Program in Animal Science, Pontifical Catholic University of Paraná, Prado Velho - Curitiba, Paraná, Brazil
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Wang X, Shen Y, Thakur K, Han J, Zhang JG, Hu F, Wei ZJ. Antibacterial Activity and Mechanism of Ginger Essential Oil against Escherichia coli and Staphylococcus aureus. Molecules 2020; 25:E3955. [PMID: 32872604 PMCID: PMC7504760 DOI: 10.3390/molecules25173955] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 08/28/2020] [Accepted: 08/29/2020] [Indexed: 12/29/2022] Open
Abstract
Though essential oils exhibit antibacterial activity against food pathogens, their underlying mechanism is understudied. We extracted ginger essential oil (GEO) using supercritical CO2 and steam distillation. A chemical composition comparison by GC-MS showed that the main components of the extracted GEOs were zingiberene and α-curcumene. Their antibacterial activity and associated mechanism against Staphylococcus aureus and Escherichia coli were investigated. The diameter of inhibition zone (DIZ) of GEO against S. aureus was 17.1 mm, with a minimum inhibition concentration (MIC) of 1.0 mg/mL, and minimum bactericide concentration (MBC) of 2.0 mg/mL. For E. coli, the DIZ was 12.3 mm with MIC and MBC values of 2.0 mg/mL and 4.0 mg/mL, respectively. The SDS-PAGE analysis revealed that some of the electrophoretic bacterial cell proteins bands disappeared with the increase in GEO concentration. Consequently, the nucleic acids content of bacterial suspension was raised significantly and the metabolic activity of bacteria was markedly decreased. GEO could thus inhibit the expression of some genes linked to bacterial energy metabolism, tricarboxylic acid cycle, cell membrane-related proteins, and DNA metabolism. Our findings speculate the bactericidal effects of GEO primarily through disruption of the bacterial cell membrane indicating its suitability in food perseveration.
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Affiliation(s)
- Xin Wang
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China; (X.W.); (Y.S.); (K.T.); (J.-G.Z.)
| | - Yi Shen
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China; (X.W.); (Y.S.); (K.T.); (J.-G.Z.)
| | - Kiran Thakur
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China; (X.W.); (Y.S.); (K.T.); (J.-G.Z.)
| | - Jinzhi Han
- College of Biological Science and Technology, Fuzhou University, Fuzhou 350108, China;
| | - Jian-Guo Zhang
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China; (X.W.); (Y.S.); (K.T.); (J.-G.Z.)
| | - Fei Hu
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China; (X.W.); (Y.S.); (K.T.); (J.-G.Z.)
| | - Zhao-Jun Wei
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China; (X.W.); (Y.S.); (K.T.); (J.-G.Z.)
- School of Biological Science and Engineering, North Minzu University, Yinchuan 750021, China
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New Formulation towards Healthier Meat Products: Juniperus communis L. Essential Oil as Alternative for Sodium Nitrite in Dry Fermented Sausages. Foods 2020; 9:foods9081066. [PMID: 32781611 PMCID: PMC7466274 DOI: 10.3390/foods9081066] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/01/2020] [Accepted: 08/03/2020] [Indexed: 11/17/2022] Open
Abstract
The effect of Juniperus communis L. essential oil (JEO) addition at concentrations of 0.01, 0.05 and 0.10 µL/g on pH, instrumental parameters of color, lipid oxidation (2-Thiobarbituric acid reactive substances (TBARS)), microbial growth, texture and sensory attributes of dry fermented sausages produced with different levels of fat (15 and 25%) and sodium nitrite (0, 75 and 150 mg/kg) was assessed. Reduced level of sodium nitrite (75 mg/kg) in combination with all three concentrations of JEO (0.01–0.10 µL/g) resulted in satisfying physico-chemical (color and texture) properties and improved oxidative stability (TBARS < 0.3 mg MDA/kg) of dry fermented sausages produced with 25% of fat. However, sausages produced with 0.10 µL/g of JEO had untypical flavor. No foodborne pathogens (Escherichia coli, Listeria monocytogenes, Salmonella spp. and sulfite-reducing clostridia) were detected in any sample throughout the storage period (225 days). The results of this study revealed significant antioxidative activity of JEO and consequently its high potential as effective partial replacement for sodium nitrite in dry fermented sausages.
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Munekata PE, Pateiro M, Rodríguez-Lázaro D, Domínguez R, Zhong J, Lorenzo JM. The Role of Essential Oils against Pathogenic Escherichia coli in Food Products. Microorganisms 2020; 8:microorganisms8060924. [PMID: 32570954 PMCID: PMC7356374 DOI: 10.3390/microorganisms8060924] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 06/17/2020] [Accepted: 06/17/2020] [Indexed: 11/30/2022] Open
Abstract
Outbreaks related to foodborne diseases are a major concern among health authorities, food industries, and the general public. Escherichia coli (E. coli) is a pathogen associated with causing multiple outbreaks in the last decades linked to several ready to eat products such as meat, fish, dairy products, and vegetables. The ingestion of contaminated food with pathogenic E. coli can cause watery diarrhea, vomiting, and persistent diarrhea as well as more severe effects such as hemorrhagic colitis, end-stage renal disease, and, in some circumstances, hemolytic uremic syndrome. Essential oils (EOs) are natural compounds with broad-spectrum activity against spoilage and pathogenic microorganisms and are also generally recognized as safe (GRAS). Particularly for E. coli, several recent studies have been conducted to study and characterize the effect to inhibit the synthesis of toxins and the proliferation in food systems. Moreover, the strategy used to apply the EO in food plays a crucial role to prevent the development of E. coli. This review encompasses recent studies regarding the protection against pathogenic E. coli by the use of EO with a major focus on inhibition of toxins and proliferation in food systems.
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Affiliation(s)
- Paulo E.S. Munekata
- Centro Tecnolóxico da Carne de Galicia, rúa Galicia n◦ 4, Parque Tecnolóxico de Galicia, San Cibrao das Viñas, 32900 Ourense, Spain; (P.E.S.M.); (M.P.); (R.D.)
| | - Mirian Pateiro
- Centro Tecnolóxico da Carne de Galicia, rúa Galicia n◦ 4, Parque Tecnolóxico de Galicia, San Cibrao das Viñas, 32900 Ourense, Spain; (P.E.S.M.); (M.P.); (R.D.)
| | - David Rodríguez-Lázaro
- Microbiology Division, Department of Biotechnology and Food Science, Faculty of Sciences, University of Burgos, 09001 Burgos, Spain;
| | - Rubén Domínguez
- Centro Tecnolóxico da Carne de Galicia, rúa Galicia n◦ 4, Parque Tecnolóxico de Galicia, San Cibrao das Viñas, 32900 Ourense, Spain; (P.E.S.M.); (M.P.); (R.D.)
| | - Jian Zhong
- Integrated Scientific Research Base on Comprehensive Utilization Technology for By-Products of Aquatic Product Processing, Ministry of Agriculture and Rural Affairs of the People’s Republic of China, Beijing 100125, China
- National R&D Branch Center for Freshwater Aquatic Products Processing Technology (Shanghai), Shanghai Engineering Research Center of Aquatic-Product Processing and Preservation, College of Food Science & Technology, Shanghai Ocean University, Shanghai 201306, China;
| | - Jose M. Lorenzo
- Centro Tecnolóxico da Carne de Galicia, rúa Galicia n◦ 4, Parque Tecnolóxico de Galicia, San Cibrao das Viñas, 32900 Ourense, Spain; (P.E.S.M.); (M.P.); (R.D.)
- Área de Tecnología de los Alimentos, Facultad de Ciencias de Ourense, Universidad de Vigo, 32004 Ourense, Spain
- Correspondence: ; Tel.: +988-548-277
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Dos Santos Rosario AIL, da Silva Mutz Y, Castro VS, da Silva MCA, Conte-Junior CA, da Costa MP. Everybody loves cheese: crosslink between persistence and virulence of Shiga-toxin Escherichia coli. Crit Rev Food Sci Nutr 2020; 61:1877-1899. [PMID: 32519880 DOI: 10.1080/10408398.2020.1767033] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
General cheese manufacturing involves high temperatures, fermentation and ripening steps that function as hurdles to microbial growth. On the other hand, the application of several different formulations and manufacturing techniques may create a bacterial protective environment. In cheese, the persistent behavior of Shiga toxin-producing Escherichia coli (STEC) relies on complex mechanisms that enable bacteria to respond to stressful conditions found in cheese matrix. In this review, we discuss how STEC manages to survive to high and low temperatures, hyperosmotic conditions, exposure to weak organic acids, and pH decreasing related to cheese manufacturing, the cheese matrix itself and storage. Moreover, we discuss how these stress responses interact with each other by enhancing adaptation and consequently, the persistence of STEC in cheese. Further, we show how virulence genes eae and tir are affected by stress response mechanisms, increasing either cell adherence or virulence factors production, which leads to a selection of more resistant and virulent pathogens in the cheese industry, leading to a public health issue.
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Affiliation(s)
- Anisio Iuri Lima Dos Santos Rosario
- Postgraduate Program in Food Science, Faculty of Pharmacy, Universidade Federal da Bahia, Salvador, Brazil.,Department of Preventive Veterinary Medicine and Animal Production, School of Veterinary Medicine and Zootechnics of Veterinary, Universidade Federal da Bahia, Salvador, Brazil
| | - Yhan da Silva Mutz
- Postgraduate Program in Food Science, Chemistry Institute, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,Department of Food Technology, Faculty of Veterinary, Universidade Federal Fluminense, Niterói, Brazil
| | - Vinícius Silva Castro
- Postgraduate Program in Food Science, Chemistry Institute, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Maurício Costa Alves da Silva
- Department of Preventive Veterinary Medicine and Animal Production, School of Veterinary Medicine and Zootechnics of Veterinary, Universidade Federal da Bahia, Salvador, Brazil
| | - Carlos Adam Conte-Junior
- Postgraduate Program in Food Science, Chemistry Institute, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,Department of Food Technology, Faculty of Veterinary, Universidade Federal Fluminense, Niterói, Brazil.,National Institute for Health Quality Control, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Marion Pereira da Costa
- Postgraduate Program in Food Science, Faculty of Pharmacy, Universidade Federal da Bahia, Salvador, Brazil.,Department of Preventive Veterinary Medicine and Animal Production, School of Veterinary Medicine and Zootechnics of Veterinary, Universidade Federal da Bahia, Salvador, Brazil
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Mei J, Ma X, Xie J. Review on Natural Preservatives for Extending Fish Shelf Life. Foods 2019; 8:E490. [PMID: 31614926 PMCID: PMC6835557 DOI: 10.3390/foods8100490] [Citation(s) in RCA: 105] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 10/10/2019] [Accepted: 10/11/2019] [Indexed: 12/22/2022] Open
Abstract
Fish is extremely perishable as a result of rapid microbial growth naturally present in fish or from contamination. Synthetic preservatives are widely used in fish storage to extend shelf life and maintain quality and safety. However, consumer preferences for natural preservatives and concerns about the safety of synthetic preservatives have prompted the food industry to search natural preservatives. Natural preservatives from microorganisms, plants, and animals have been shown potential in replacing the chemical antimicrobials. Bacteriocins and organic acids from bacteria showed good antimicrobial activities against spoilage bacteria. Plant-derived antimicrobials could prolong fish shelf life and decrease lipid oxidation. Animal-derived antimicrobials also have good antimicrobial activities; however, their allergen risk should be paid attention. Moreover, some algae and mushroom species can also provide a potential source of new natural preservatives. Obviously, the natural preservatives could perform better in fish storage by combining with other hurdles such as non-thermal sterilization processing, modified atmosphere packaging, edible films and coatings.
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Affiliation(s)
- Jun Mei
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
- National Experimental Teaching Demonstration Center for Food Science and Engineering Shanghai Ocean University, Shanghai 201306, China
- Shanghai Engineering Research Center of Aquatic Product Processing and Preservation, Shanghai 201306, China
- Shanghai Professional Technology Service Platform on Cold Chain Equipment Performance and Energy Saving Evaluation, Shanghai 201306, China
| | - Xuan Ma
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
| | - Jing Xie
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China.
- National Experimental Teaching Demonstration Center for Food Science and Engineering Shanghai Ocean University, Shanghai 201306, China.
- Shanghai Engineering Research Center of Aquatic Product Processing and Preservation, Shanghai 201306, China.
- Shanghai Professional Technology Service Platform on Cold Chain Equipment Performance and Energy Saving Evaluation, Shanghai 201306, China.
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24
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Combination of natural antimicrobials for contamination control in ethanol production. World J Microbiol Biotechnol 2019; 35:158. [PMID: 31595344 DOI: 10.1007/s11274-019-2734-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Accepted: 09/26/2019] [Indexed: 10/25/2022]
Abstract
Presence of bacterial contaminants at levels > 107 colony forming units per milliliter (CFU/mL) during ethanol production processes reduces the alcoholic fermentation yield by 30%. Antibiotics are currently used to control contamination, but their residues may be detected in yeast extract, restricting this by-product trade to several countries. Thus, the objective of this study was to assess antimicrobial activity of the natural compounds hops extract, 4-hydroxybenzoic acid, nisin Z, and lysozyme against Lactobacillus fermentum, Leuconostoc mesenteroides, and Saccharomyces cerevisiae, aiming development of a formula. Minimum Inhibitory Concentration of each antimicrobial was determined for bacteria and subsequently, nisin (30 mg/L) and hops extract (5 mg/L) were tested together, showing inhibitory effects combining doses of each antimicrobial that were equivalent to an eightfold reduction of their original Minimum Inhibitory Concentrations (3.75 and 0.625 mg/L, respectively), resulting in a FICIndex of 0.25. Thereon, a formula containing both compounds was developed and tested in fermentation assays, promoting reductions on bacterial population and no severe interferences in yeast viability or population even at extreme doses. Therefore, these compounds have great potential to successfully substitute conventional antibiotics in the ethanol industry.
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25
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Nazareth TDM, Quiles JM, Torrijos R, Luciano FB, Mañes J, Meca G. Antifungal and antimycotoxigenic activity of allyl isothiocyanate on barley under different storage conditions. Lebensm Wiss Technol 2019. [DOI: 10.1016/j.lwt.2019.06.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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26
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Nouri Ala MA, Shahbazi Y. The effects of novel bioactive carboxymethyl cellulose coatings on food-borne pathogenic bacteria and shelf life extension of fresh and sauced chicken breast fillets. Lebensm Wiss Technol 2019. [DOI: 10.1016/j.lwt.2019.05.092] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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27
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Quaglia NC, Storelli M, Ioanna F, Celano G, Celano GV, Conversano C, De Rosa M, Dambrosio A. Listeria monocytogenesand enterotoxigenicStaphylococcus aureusin dry fermented sausages belonging to “Traditional Agri‐Food Product” produced in Southern Italy. J Food Saf 2019. [DOI: 10.1111/jfs.12685] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Nicoletta C. Quaglia
- Department of Emergency and Organ Transplantation, Section of Veterinary Clinic and Animal ProductionUniversity of Bari Aldo Moro Bari Italy
| | - MariaMaddalena Storelli
- Department of Bioscience, Biotechnologies and BiopharmaceuticalUniversity of Bari Aldo Moro, Strada Prov.le per Casamassima Bari Italy
| | | | - Giuseppe Celano
- Department of Soil, Plant and Food ScienceUniversity of Bari Aldo Moro Bari Italy
| | - Gaetano V. Celano
- Department of Veterinary MedicineUniversity of Bari Aldo Moro Bari Italy
| | | | - Michele De Rosa
- Veterinary Surgeon, Freelance Professional, Grumo Appula Bari Italy
| | - Angela Dambrosio
- Department of Emergency and Organ Transplantation, Section of Veterinary Clinic and Animal ProductionUniversity of Bari Aldo Moro Bari Italy
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Gong L, He H, Li D, Cao L, Khan TA, Li Y, Pan L, Yan L, Ding X, Sun Y, Zhang Y, Yi G, Hu S, Xia L. A New Isolate of Pediococcus pentosaceus (SL001) With Antibacterial Activity Against Fish Pathogens and Potency in Facilitating the Immunity and Growth Performance of Grass Carps. Front Microbiol 2019; 10:1384. [PMID: 31316478 PMCID: PMC6610308 DOI: 10.3389/fmicb.2019.01384] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Accepted: 06/03/2019] [Indexed: 11/13/2022] Open
Abstract
Probiotic-feeding continues to be a promising strategy to control the bacterial pathogens in aquaculture. A new Pediococcus pentosaceus strain (SL001) was isolated from 1000s of soil samples, which exhibited wide antimicrobial spectrum of against fish pathogens, involving Aeromonas hydrophila, Aeromonas veronii, Aeromonas sobria, Edwardsiella tarda, Lactococcus garvieae, and Plesiomonas shigelloide. The challenge test against A. hydrophila showed that the survival rate of SL001-supplemented group was significantly higher than that of control group (P < 0.05). Moreover, SL001 could stably colonize in gut of grass carp and increased mucus-secreting goblet cells and extended intestinal villi could be observed in SL001-supplemented group (P < 0.05). Feeding with SL001 supplemented diet could significantly enhance the growth rate (P < 0.05) and markedly affect gut microbiota structure of grass carps, resulting in reduced potential pathogens and increased potential probiotics. Furthermore, feeding grass carps with SL001 caused the up-regulated expression of insulin-like growth factor (IGF-1 and IGF-2) and down-regulated expression of myostatin (MSTN-1 and MSTN-2) (P < 0.05), which probably also account for the increased growth rate of SL001-fed group. Meanwhile, relative mRNA expression levels of immune-related genes in liver, spleen, and head kidney were analyzed in grass carps after feeding for 30 days with SL001 supplemented diets. In all three immune organs, the expression levels of immunoglobulin M (IgM) and complement 3 (C3) were significantly increased (P < 0.05), whereas the interleukin-8 (IL-8) was down-regulated (P < 0.05). Besides, whole genome sequencing revealed several probiotics properties of SL001, including organic acid synthesis, bacteriocin synthesis (coagulin), superoxide dismutase, and digestive enzymes. In conclusion, P. pentosaceus SL001 which could enhance immunity and promoter growth rate of grass carps, is prospective to be used as a dietary probiotic in freshwater fish aquaculture.
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Affiliation(s)
- Liang Gong
- State Key Laboratory of Developmental Biology of Freshwater Fishes, Hunan Provincial Key Laboratory of Microbial Molecular Biology, College of Life Science, Hunan Normal University, Changsha, China
| | - Haocheng He
- State Key Laboratory of Developmental Biology of Freshwater Fishes, Hunan Provincial Key Laboratory of Microbial Molecular Biology, College of Life Science, Hunan Normal University, Changsha, China
| | - Dongjie Li
- State Key Laboratory of Developmental Biology of Freshwater Fishes, Hunan Provincial Key Laboratory of Microbial Molecular Biology, College of Life Science, Hunan Normal University, Changsha, China
| | - Lina Cao
- State Key Laboratory of Developmental Biology of Freshwater Fishes, Hunan Provincial Key Laboratory of Microbial Molecular Biology, College of Life Science, Hunan Normal University, Changsha, China
| | - Tahir Ali Khan
- State Key Laboratory of Developmental Biology of Freshwater Fishes, Hunan Provincial Key Laboratory of Microbial Molecular Biology, College of Life Science, Hunan Normal University, Changsha, China
| | - Yanping Li
- State Key Laboratory of Developmental Biology of Freshwater Fishes, Hunan Provincial Key Laboratory of Microbial Molecular Biology, College of Life Science, Hunan Normal University, Changsha, China
| | - Lifei Pan
- State Key Laboratory of Developmental Biology of Freshwater Fishes, Hunan Provincial Key Laboratory of Microbial Molecular Biology, College of Life Science, Hunan Normal University, Changsha, China
| | - Liang Yan
- State Key Laboratory of Developmental Biology of Freshwater Fishes, Hunan Provincial Key Laboratory of Microbial Molecular Biology, College of Life Science, Hunan Normal University, Changsha, China
| | - Xuezhi Ding
- State Key Laboratory of Developmental Biology of Freshwater Fishes, Hunan Provincial Key Laboratory of Microbial Molecular Biology, College of Life Science, Hunan Normal University, Changsha, China
| | - Yunjun Sun
- State Key Laboratory of Developmental Biology of Freshwater Fishes, Hunan Provincial Key Laboratory of Microbial Molecular Biology, College of Life Science, Hunan Normal University, Changsha, China
| | - Youming Zhang
- State Key Laboratory of Developmental Biology of Freshwater Fishes, Hunan Provincial Key Laboratory of Microbial Molecular Biology, College of Life Science, Hunan Normal University, Changsha, China
| | - Ganfeng Yi
- State Key Laboratory of Developmental Biology of Freshwater Fishes, Hunan Provincial Key Laboratory of Microbial Molecular Biology, College of Life Science, Hunan Normal University, Changsha, China
| | - Shengbiao Hu
- State Key Laboratory of Developmental Biology of Freshwater Fishes, Hunan Provincial Key Laboratory of Microbial Molecular Biology, College of Life Science, Hunan Normal University, Changsha, China
| | - Liqiu Xia
- State Key Laboratory of Developmental Biology of Freshwater Fishes, Hunan Provincial Key Laboratory of Microbial Molecular Biology, College of Life Science, Hunan Normal University, Changsha, China
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Pereira Batista AF, Rodrigues dos Santos A, Fiori da Silva A, Coelho Trevisan DA, Ribeiro LH, Zanetti Campanerut-Sá PA, Alves de Abreu Filho B, Junior MM, Graton Mikcha JM. Inhibition of Salmonella enterica serovar Typhimurium by combined carvacrol and potassium sorbate in vitro and in tomato paste. Lebensm Wiss Technol 2019. [DOI: 10.1016/j.lwt.2018.10.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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30
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Corrêa JAF, Yurgel S, Udenigwe C, Luciano FB. Estabelecimento de sistema bacteriano de expressão de peptídeos derivados da enzima vegetal RuBisCO. BRAZILIAN JOURNAL OF FOOD TECHNOLOGY 2019. [DOI: 10.1590/1981-6723.18018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Resumo O objetivo do presente estudo foi estabelecer um sistema bacteriano de expressão de peptídeos derivados da proteólise simulada in silico da enzima ribulose-1,5-bisfosfato carboxilase oxigenase (RuBisCO), proveniente de soja, visando viabilizar um método sustentável de produção dessas moléculas para futura aplicação industrial. Inicialmente, foi conferida à cepa Escherichia coli S17-1 cálcio-competência para propagação do plasmídeo de expressão pET-30a(+) contendo o inserto codificante da sequência peptídica GSIKAFKEATKVDKVVVLWTALVPR. Após extração de DNA plasmidial, o material foi transformado em células de alto rendimento E. coli Rosetta™(DE3)pLysS. As células Rosetta portando o plasmídeo de expressão foram induzidas e a produção dos peptídeos foi verificada por meio de eletroforese em gel vertical, confirmando o estabelecimento de um sistema de expressão viável para peptídeos heterólogos. Assim, a produção em maior escala de peptídeos derivados de RuBisCO – associando-se futuramente etapas de purificação e ativação – torna-se possível. Além disso, o método aqui estabelecido pode também ser aplicado utilizando diferentes sequências peptídicas com atividade antimicrobiana.
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