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Çali A, Çelik C. Determination of in vitro synergy and antibiofilm activities of antimicrobials and essential oil components. BIOFOULING 2024; 40:483-498. [PMID: 39069795 DOI: 10.1080/08927014.2024.2381587] [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: 03/29/2024] [Revised: 06/14/2024] [Accepted: 07/11/2024] [Indexed: 07/30/2024]
Abstract
Using existing adrentimicrobials with essential oil components to prevent antimicrobial resistance is an alternative strategy. This study aimed to evaluate the resistance status, synergistic combinations, and in vitro biofilm formation activities of clinical isolates of methicillin-resistant Staphylococcus aureus (MRSA), Stenotrophomonas maltophilia and Candida albicans against antimicrobial agents and cinnamaldehyde, carvacrol, eugenol, limonene and eucalyptol. Antimicrobial activities were evaluated by microdilution, cytotoxicity by XTT, synergy by checkerboard and time-kill, and biofilm inhibition by microplate methods. Cinnamaldehyde and carvacrol showed strong antimicrobial activity. Synergistic effects were observed when using all essential oils with antimicrobials. Only two C. albicans isolates showed antagonism with cinnamaldehyde and fluconazole. The constituents showed cytotoxic effects in the L929 cell line (except limonene). A time-kill analysis revealed a bacteriostatic effect on S. maltophilia and MRSA isolates and a fungicidal effect on C. albicans isolates. These results are important for further research to improve antimicrobial efficacy or to develop new agents.
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Affiliation(s)
- Abdulhamit Çali
- Medical Laboratory Techniques, Vocational School of Health Services, Lokman Hekim University, Ankara, Turkey
| | - Cem Çelik
- Department of Medical Microbiology, Faculty of Medicine, Sivas Cumhuriyet University, Sivas, Turkey
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2
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Liu Y, Ren H, Li K. Litsea cubeba essential oil: Extraction, chemical composition, antioxidant and antimicrobial properties, and applications in the food industry. J Food Sci 2024; 89:4583-4603. [PMID: 39013008 DOI: 10.1111/1750-3841.17236] [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: 11/13/2023] [Revised: 06/19/2024] [Accepted: 06/20/2024] [Indexed: 07/18/2024]
Abstract
Litsea cubeba (Lour.) Pers. (Lauraceae) is a valuable industrial crop that produces essential oil. The essential oil extracted from L. cubeba (LCEO) has broad-spectrum antimicrobial activity and high antioxidant properties, with great potential for increased usage in the food industry. This literature review summarizes the extraction techniques, content and chemical composition, and antioxidant and antimicrobial activities of LCEO, with a focus on its usage in the food industry, which is an area of substantial recent research. The chemical composition of LCEO, which is affected by various factors, plays a key role in determining its bioactivity and usage in food. The potent antimicrobial activity of LCEO against various foodborne pathogens gives it potential for use in food packaging and preservation to extend shelf life. Future research challenges include the elucidation of the role and mechanism of individual chemical components of LCEO in inhibiting specific foodborne microorganisms; cultivar development to produce germplasm that yields essential oils of the desired chemical composition; and the development of commercial products that can be used in the food industry.
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Affiliation(s)
- Yao Liu
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Collaborative Innovation Center for Mountain Ecology & Agro-Bioengineering (CICMEAB), Institute of Agro-Bioengineering, College of Life Sciences, Guizhou University, Guiyang, Guizhou Province, China
| | - Huanhuan Ren
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Collaborative Innovation Center for Mountain Ecology & Agro-Bioengineering (CICMEAB), Institute of Agro-Bioengineering, College of Life Sciences, Guizhou University, Guiyang, Guizhou Province, China
| | - Kehu Li
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Collaborative Innovation Center for Mountain Ecology & Agro-Bioengineering (CICMEAB), Institute of Agro-Bioengineering, College of Life Sciences, Guizhou University, Guiyang, Guizhou Province, China
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3
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Wahyuni DK, Kharisma VD, Murtadlo AAA, Rahmawati CT, Syukriya AJ, Prasongsuk S, Subramaniam S, Wibowo AT, Purnobasuki H. The antioxidant and antimicrobial activity of ethanolic extract in roots, stems, and leaves of three commercial Cymbopogon species. BMC Complement Med Ther 2024; 24:272. [PMID: 39026301 PMCID: PMC11264733 DOI: 10.1186/s12906-024-04573-4] [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: 02/06/2024] [Accepted: 06/26/2024] [Indexed: 07/20/2024] Open
Abstract
BACKGROUND Cymbopogon is a member of the family Poaceae and has been explored for its phytochemicals and bioactivities. Although the antimicrobial activities of Cymbopogon spp. extracts have been extensively studied, comprehensive analyses are required to identify promising compounds for the treatment of antimicrobial resistance. Therefore, this study investigated the antioxidant and antimicrobial properties of Cymbopogon spp. ethanolic extracts in every single organ. METHODS Ethanolic extracts were obtained from three Indonesian commercial species of Cymbopogon spp., namely Cymbopogon citratus (L.) Rendle, Cymbopogon nardus (DC.) Spatf., and Cymbopogon winterianus Jowitt. The leaf, stem, and root extracts were evaluated via metabolite profiling using gas chromatography-mass spectrometry (GC-MS). In silico and in vitro analyses were used to evaluate the antioxidant and antimicrobial properties of the Cymbopogon spp. ethanolic extracts. In addition, bioactivity was measured using cytotoxicity assays. Antioxidant assays were performed using 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2-azino-bis [3-ethylbenzothiazoline-6-sulfonic acid (ABTS) to determine toxicity to Huh7it-1 cells using a tetrazolium bromide (MTT) assay. Finally, the antimicrobial activity of these extracts was evaluated against Candida albicans, Bacillus subtilis, Staphylococcus aureus, and Escherichia coli using a well diffusion assay. RESULTS GC-MS analysis revealed 53 metabolites. Of these, 2,5-bis(1,1-dimethylethyl)- phenol (27.87%), alpha-cadinol (26.76%), and 1,2-dimethoxy-4-(1-propenyl)-benzene (20.56%) were the predominant compounds. C. winterianus and C. nardus leaves exhibited the highest antioxidant activity against DPPH and ABTS, respectively. Contrastingly, the MTT assay showed low cytotoxicity. C. nardus leaf extract exhibited the highest antimicrobial activity against E. coli and S. aureus, whereas C. winterianus stem extract showed the highest activity against B. substilis. Furthermore, computational pathway analysis predicted that antimicrobial activity mechanisms were related to antioxidant activity. CONCLUSIONS These findings demonstrate that the leaves had strong antioxidant activity, whereas both the leaves and stems showed great antimicrobial activity. Furthermore, all Cymbopogon spp. ethanolic extracts showed low toxicity. These findings provide a foundation for future studies that assess the clinical safety of Cymbopogon spp. as novel drug candidates.
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Affiliation(s)
- Dwi Kusuma Wahyuni
- Department of Biology, Faculty of Science and Technology, Universitas Airlangga Surabaya, 60115, East Java, Indonesia.
| | - Viol Dhea Kharisma
- Department of Biology, Faculty of Science and Technology, Universitas Airlangga Surabaya, 60115, East Java, Indonesia
| | - Ahmad Affan Ali Murtadlo
- Department of Biology, Faculty of Science and Technology, Universitas Airlangga Surabaya, 60115, East Java, Indonesia
| | - Cici Tya Rahmawati
- Department of Biology, Faculty of Science and Technology, Universitas Airlangga Surabaya, 60115, East Java, Indonesia
| | - Alvi Jauharotus Syukriya
- Department of Biology, Faculty of Science and Technology, Universitas Airlangga Surabaya, 60115, East Java, Indonesia
- Program in Biotechnology, Faculty of Science, Chulalongkorn University, 10330, Bangkok, Thailand
| | - Sehanat Prasongsuk
- Plant Biomass Utilization Research Unit, Department of Botany, Faculty of Science, Chulalongkorn University, 10330, Bangkok, Thailand
| | - Sreeramanan Subramaniam
- Department of Biology, Faculty of Science and Technology, Universitas Airlangga Surabaya, 60115, East Java, Indonesia
- School of Biological Science, Universiti Sains Malaysia, 11800, Georgetown, Malaysia
| | - Anjar Tri Wibowo
- Department of Biology, Faculty of Science and Technology, Universitas Airlangga Surabaya, 60115, East Java, Indonesia
| | - Hery Purnobasuki
- Department of Biology, Faculty of Science and Technology, Universitas Airlangga Surabaya, 60115, East Java, Indonesia.
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Ding J, Liao M, Wang Q. Co-regulation of Thermosensor Pathogenic Factors by C-di-GMP-Related Two-Component Systems and a cAMP Receptor-like Protein (Clp) in Stenotrophomonas maltophilia. Foods 2024; 13:1201. [PMID: 38672874 PMCID: PMC11049440 DOI: 10.3390/foods13081201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 03/31/2024] [Accepted: 04/01/2024] [Indexed: 04/28/2024] Open
Abstract
Stenotrophomonas maltophilia is a major threat to the food industry and human health owing to its strong protease production and biofilm formation abilities. However, information regarding regulatory factors or potential mechanisms is limited. Herein, we observed that temperature differentially regulates biofilm formation and protease production, and a cAMP receptor-like protein (Clp) negatively regulates thermosensor biofilm formation, in contrast to protease synthesis. Among four c-di-GMP-related two-component systems (TCSs), promoter fusion analysis revealed that clp transcription levels were predominantly controlled by LotS/LotR, partially controlled by both RpfC/RpfG and a novel TCS Sm0738/Sm0737, with no obvious effect caused by Sm1912/Sm1911. Biofilm formation in Δclp and ΔTCSs strains suggested that LotS/LotR controlled biofilm formation in a Clp-mediated manner, whereas both RpfC/RpfG and Sm0738/Sm0737 may occur in a distinct pathway. Furthermore, enzymatic activity analysis combined with c-di-GMP level indicated that the enzymatic activity of c-di-GMP-related metabolism proteins may not be a vital contributor to changes in c-di-GMP level, thus influencing physiological functions. Our findings elucidate that the regulatory pathway of c-di-GMP-related TCSs and Clp in controlling spoilage or the formation of potentially pathogenic factors in Stenotrophomonas expand the understanding of c-di-GMP metabolism and provide clues to control risk factors of S. maltophilia in food safety.
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Affiliation(s)
| | | | - Qingling Wang
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi’an 710069, China; (J.D.); (M.L.)
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Fajdek-Bieda A, Pawlińska J, Wróblewska A, Łuś A. Evaluation of the Antimicrobial Activity of Geraniol and Selected Geraniol Transformation Products against Gram-Positive Bacteria. Molecules 2024; 29:950. [PMID: 38474462 DOI: 10.3390/molecules29050950] [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: 01/10/2024] [Revised: 02/19/2024] [Accepted: 02/20/2024] [Indexed: 03/14/2024] Open
Abstract
Both geraniol and the products of its transformation, thanks to their beneficial properties, find a variety of applications in cosmetics. Due to their antioxidant and moisturizing properties, these compounds can be added to skin care products such as face creams, lotions, oils, and masks. In addition, these compounds show some antibacterial and antifungal properties, making them suitable for application in skin care products to help fight against bacteria or fungi. This study determined the antimicrobial activity of geraniol and the compounds which were formed during its transformation in relation to selected Gram-positive bacteria, and the preliminary assessment was made whether these compounds can act as ingredients of preparations with potential antimicrobial activity in the treatment of various human diseases (for example diseases of the skin, digestive system, or urinary tract). In addition, this work presents studies on the microbiological purity of cream samples obtained with different contents of geraniol and its transformation products (contents of the tested compounds: 0.5%, 1.5%, 2.5%, 4%, 8%, and 12%). Antibacterial activity tests were performed using the disc diffusion method against Gram-positive cocci, including the reference strains Staphylococcus aureus ATCC 29213 and Enterococcus faecalis ATCC 29212, and against the clinical strains Staphylococcus aureus MRSA, Staphylococcus epidermidis, Enterococcus faecalis VRE VanB, Enterococcus faecium VRE VanA, and Enterococcus faecium VRE VanB. The most active ingredient against bacteria of the Staphylococcus genus was citral, followed by linalool and then geraniol. During our tests, in the case of bacteria of the Enterococcus genus, citral also showed the highest activity, but linalool, ocimenes, and geraniol showed a slightly lower activity. Moreover, this study examined the microbiological purity of cream samples obtained with various contents of geraniol and its transformation products. In the tests of the microbiological purity of cream samples, no growth of aerobic bacteria and fungi was found, which proves the lack of microbiological contamination of the obtained cosmetic preparations. On this basis, it was assessed that these compounds have preservative properties in the prepared creams. The addition of the analyzed compounds also had influence on the durability of the creams and had no effect on the change in their consistency, did not negatively affect the separation of phases during storage, and even had a positive effect on organoleptic sensations by enriching the smell of the tested samples.
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Affiliation(s)
- Anna Fajdek-Bieda
- Department of Energy and Technical Safety, Faculty of Technology, Jakub's from Paradyż Academy in Gorzów Wielkopolski, Teatralna 25, 66-400 Gorzów Wielkopolski, Poland
| | - Joanna Pawlińska
- Multispecialty Regional Hospital in Gorzow Wielkopolski, Department of Microbiology, 66-400 Gorzów Wielkopolski, Poland
| | - Agnieszka Wróblewska
- Department of Catalytic and Sorbent Materials Engineering, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, Piastów Ave. 42, 71-065 Szczecin, Poland
| | - Agnieszka Łuś
- Multispecialty Regional Hospital in Gorzow Wielkopolski, Department of Microbiology, 66-400 Gorzów Wielkopolski, Poland
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Wang W, Niu B, Liu R, Chen H, Fang X, Wu W, Wang G, Gao H, Mu H. Development of bio-based PLA/cellulose antibacterial packaging and its application for the storage of shiitake mushroom. Food Chem 2023; 429:136905. [PMID: 37487388 DOI: 10.1016/j.foodchem.2023.136905] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 07/01/2023] [Accepted: 07/10/2023] [Indexed: 07/26/2023]
Abstract
This study presents the extraction of cellulose from water bamboo byproducts to prepare polylactic acid (PLA)/cellulose antibacterial packaging material. The cellulose was modified using a silane coupling agent, which improved the interfacial compatibility between cellulose and PLA. Upon coating the PLA onto the modified cellulose sheet, the water contact angle of the composite material increased from 11.42° to 132.12° and the water absorption rate decreased from 182.52% to 55.71%, which improved the water resistance performance of the material. The addition of cinnamaldehyde in the PLA layer imparted antibacterial activity to the PLA/cellulose packaging material. This packaging material effectively inhibited the mycelial growth and spore germination of Aspergillus niger and Trichoderma harzianum isolated from shiitake mushroom. Additionally, the study investigated the effects of the composite on the postharvest quality of shiitake mushroom. Overall, the packaging material contributed to shiitake mushroom storage and can be applied to other perishable food products.
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Affiliation(s)
- Weitao Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Post-Harvest Handling of Fruits, Ministry of Agriculture and Rural Affairs, Key Laboratory of Fruits and Vegetables Postharvest and Processing Technology Research of Zhejiang Province, Food Science Institute, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Ben Niu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Post-Harvest Handling of Fruits, Ministry of Agriculture and Rural Affairs, Key Laboratory of Fruits and Vegetables Postharvest and Processing Technology Research of Zhejiang Province, Food Science Institute, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Ruiling Liu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Post-Harvest Handling of Fruits, Ministry of Agriculture and Rural Affairs, Key Laboratory of Fruits and Vegetables Postharvest and Processing Technology Research of Zhejiang Province, Food Science Institute, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Hangjun Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Post-Harvest Handling of Fruits, Ministry of Agriculture and Rural Affairs, Key Laboratory of Fruits and Vegetables Postharvest and Processing Technology Research of Zhejiang Province, Food Science Institute, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Xiangjun Fang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Post-Harvest Handling of Fruits, Ministry of Agriculture and Rural Affairs, Key Laboratory of Fruits and Vegetables Postharvest and Processing Technology Research of Zhejiang Province, Food Science Institute, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Weijie Wu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Post-Harvest Handling of Fruits, Ministry of Agriculture and Rural Affairs, Key Laboratory of Fruits and Vegetables Postharvest and Processing Technology Research of Zhejiang Province, Food Science Institute, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Guannan Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Post-Harvest Handling of Fruits, Ministry of Agriculture and Rural Affairs, Key Laboratory of Fruits and Vegetables Postharvest and Processing Technology Research of Zhejiang Province, Food Science Institute, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Haiyan Gao
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Post-Harvest Handling of Fruits, Ministry of Agriculture and Rural Affairs, Key Laboratory of Fruits and Vegetables Postharvest and Processing Technology Research of Zhejiang Province, Food Science Institute, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
| | - Honglei Mu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Post-Harvest Handling of Fruits, Ministry of Agriculture and Rural Affairs, Key Laboratory of Fruits and Vegetables Postharvest and Processing Technology Research of Zhejiang Province, Food Science Institute, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
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Lin H, Liang Y, Kaliaperumal K, Xiong Q, Duan S, Jiang Y, Zhang J. Linoleic acid from the endophytic fungus Diaporthe sp. HT-79 inhibits the growth of Xanthomonas citri subsp. citri by destructing the cell membrane and producing reactive oxygen species (ROS). PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 192:105423. [PMID: 37105613 DOI: 10.1016/j.pestbp.2023.105423] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 03/29/2023] [Accepted: 04/05/2023] [Indexed: 06/19/2023]
Abstract
Citrus canker disease caused by Xanthomonas citri subsp. citri (Xac) severely influences the quality and quantity of citrus fruits. The current management of this disease mainly relies on the application of copper-associated chemicals, which poses a threat to human health and the environment. The present study isolated an endophytic fungus HT-79 from the healthy navel orange tree, whose crude fermentation product significantly inhibited the growth of Xac. The strain HT-79 was identified as a species of the Diaporthe genus. The petroleum ether extract (PEE) of the crude fermentation product of HT-79 exhibited remarkable activity against Xac with a MIC (minimum inhibitory concentration) value of 0.0625 mg/mL, significantly better than the positive control CuSO4 (MIC = 0.125 mg/mL). Bioassay-guided isolation of PEE resulted in the discovery of one highly potent anti-Xac subfraction, namely fraction 5 (MIC = 0.0156 mg/mL). Gas chromatography-mass spectrometry (GC-MS) analysis revealed that fraction 5 mainly consisted of palmitic acid (18.17%), ethyl palmitate (15.66%), linoleic acid (6.80%), oleic acid (18.32%), ethyl linoleate (21.58%), ethyl oleate (15.87%), and ethyl stearate (3.60%). Among these seven compounds, linoleic acid (MIC = 0.0078 mg/mL) was found to be the most potent against Xac, followed by oleic acid (MIC = 0.0156 mg/mL), while all others were less pronounced than CuSO4. Linoleic acid highly inhibited the growth of Xac via the destruction of the cell membrane and overproduction of reactive oxygen species (ROS). A preliminary in vivo experiment revealed that linoleic acid was effective in the control of citrus canker disease.
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Affiliation(s)
- Huiting Lin
- National Engineering Research Center of Navel Orange, Gannan Normal University, Ganzhou 341000, China
| | - Yan Liang
- National Engineering Research Center of Navel Orange, Gannan Normal University, Ganzhou 341000, China
| | - Kumaravel Kaliaperumal
- National Engineering Research Center of Navel Orange, Gannan Normal University, Ganzhou 341000, China; Department of Orthodontics, Saveetha Dental College, Saveetha University, Chennai, 600077, India
| | - Qin Xiong
- National Engineering Research Center of Navel Orange, Gannan Normal University, Ganzhou 341000, China
| | - Shuo Duan
- National Engineering Research Center of Navel Orange, Gannan Normal University, Ganzhou 341000, China
| | - Yueming Jiang
- National Engineering Research Center of Navel Orange, Gannan Normal University, Ganzhou 341000, China; South China Botanical Garden, Chinese Academy of Science, Guangzhou, 510650, China
| | - Jun Zhang
- National Engineering Research Center of Navel Orange, Gannan Normal University, Ganzhou 341000, China; South China Botanical Garden, Chinese Academy of Science, Guangzhou, 510650, China.
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Han Z, Zhu H, Cheng JH. Novel Double Cross-Linked Acrylic Acid/Bagasse Cellulose Porous Hydrogel for Controlled Release of Citral and Bacteriostatic Effects. ACS APPLIED MATERIALS & INTERFACES 2023; 15:20358-20371. [PMID: 37041109 DOI: 10.1021/acsami.3c00289] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
In this study, double cross-linked acrylic acid/bagasse cellulose (AA/BC) porous hydrogels were first prepared using cold plasma (CP) technology instead of chemical initiators. The structure and properties of porous hydrogels, as well as the controlled release and bacteriostatic application as functional carriers, were investigated. Results showed that a novel double cross-linked hydrogel had been successfully synthesized by utilizing •OH and H+ produced during plasma discharge. The acrylic acid (AA) monomers were successfully grafted onto the main chains of bagasse cellulose (BC), forming a porous three-dimensional network structure. The AA/BC porous hydrogels showed excellent swelling levels and intelligent responses. The release of citral in hydrogel inclusion compounds embedded with citral was controlled by adjusting the pH, and the slow release period was about 2 days. The inclusion compounds presented strong bacteriostatic effects against Escherichia coli and Staphylococcus aureus, extending the shelf life of fruits for about 4 days. Therefore, it can be concluded that CP technology is considered to be an efficient and environmental-friendly initiation technology for preparing hydrogels. The potential application of hydrogel inclusion compounds in the food field is expanded.
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Affiliation(s)
- Zhuorui Han
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
- Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China
| | - Hong Zhu
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
- Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China
| | - Jun-Hu Cheng
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
- Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China
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9
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Wróblewska A, Fajdek-Bieda A, Markowska-Szczupak A, Radkowska M. Preliminary Microbiological Tests of S-Carvone and Geraniol and Selected Derivatives of These Compounds That May Be Formed in the Processes of Isomerization and Oxidation. Molecules 2022; 27:molecules27207012. [PMID: 36296608 PMCID: PMC9609738 DOI: 10.3390/molecules27207012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/13/2022] [Accepted: 10/14/2022] [Indexed: 12/03/2022] Open
Abstract
This work presents a literature review on the biological activity of S-carvone, geraniol and derivatives of these compounds, which are formed in the process of isomerization (during the process of geraniol isomerization, oxidation products of this compound are also obtained). Moreover, this work presents preliminary microbiological tests of creams with the addition of these biologically active compounds: S-carvone, geraniol, carvacrol (an S-carvone isomerization product), nerol (a geraniol isomerization product), linalool (a geraniol isomerization product) and citral (a geraniol oxidation product). Because the post-reaction mixture obtained after the S-carvone isomerization has a relatively simple composition, it was also added to creams and tested without isolating pure compounds. This may be a cheaper alternative to creams prepared with the addition of pure compounds. The mixture obtained after the geraniol isomerization process has a very complex composition; therefore, only compounds with the lowest molecular weight and are easily commercially available were selected for studies. The content of the tested compounds in the creams ranged from 0.5 to 3 wet%. The following microorganisms were selected for microbiological tests: the Gram-negative bacterium Escherichia coli K12, the Gram-positive bacterium Staphylococcus epidermidis, and the fungi Candida albicans, Trichophyton rubrum, Aspergillus niger, and Penicillium chrysogenum. A content of 3% carvacrol, nerol, geraniol and citral inhibited the growth of E. coli, and attenuated the growth of C. albicans and T. rubrum. On the other hand, 3% carvacrol and citral only poorly attenuated the growth of the mould fungi P. chrysogenum and A. niger.
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Affiliation(s)
- Agnieszka Wróblewska
- Department of Catalytic and Sorbent Materials Engineering, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, Piastów Ave. 42, 71-065 Szczecin, Poland
- Correspondence: (A.W.); (A.M.-S.)
| | - Anna Fajdek-Bieda
- Jakub’s from Paradyż Academy in Gorzów Wielkopolski, Teatralna 25, 66-400 Gorzów Wielkopolski, Poland
| | - Agata Markowska-Szczupak
- Department of Chemical and Process Engineering, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, Piastów Ave. 42, 71-065 Szczecin, Poland
- Correspondence: (A.W.); (A.M.-S.)
| | - Monika Radkowska
- Department of Catalytic and Sorbent Materials Engineering, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, Piastów Ave. 42, 71-065 Szczecin, Poland
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Carboxymethyl chitosan-based electrospun nanofibers with high citral-loading for potential anti-infection wound dressings. Int J Biol Macromol 2022; 209:344-355. [PMID: 35413309 DOI: 10.1016/j.ijbiomac.2022.04.025] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Revised: 03/31/2022] [Accepted: 04/04/2022] [Indexed: 11/21/2022]
Abstract
As a natural antibacterial agent with pleasant fragrance, citral possesses low aqueous solubility. To improve citral loading in hydrophilic nanofiber, Pickering emulsion electrospinning strategy was proposed for anti-infection dressing development. The in-situ aggerated β-cyclodextrin-citral inclusion complex particles (βCPs) were used as emulsion stabilizers, while citral and carboxymethyl chitosan (CMCS)/polyvinyl alcohol (PVA) mixed solutions were used as the inner "dispersed oil phase" and outer "continuous water phase", respectively. The results of electronic microscope investigation shown βCPs possessed regular cube appearances with a size of 5.5 ± 2.2 μm, which might improve the emulsion storage stability based on visual investigation. Moreover, randomly oriented and bead-on-string nanofibers with βCPs uniformly distributed could be obtained under optimized compositions and electrospinning parameters. Despite volatilization during electrospinning, nanofibers with high citral loading possessed good antibacterial performance against Staphylococcus aureus and Escherichia coli. In vitro hemolysis test indicated that nanofibers were hemocompatible. In addition, both fiber matrix and citral could promote the proliferation of mouse fibroblast cells. And the permeability of the fibers was adjustable. Thus, CMCS/PVA/βCPs/citral nanofibers could potentially protect wound from infection. In summary, CMCS/PVA/βCPs/citral nanofibers seemed to be promising alternatives to conventional wound dressings.
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11
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Antifungal activity and mechanism of d-limonene against foodborne opportunistic pathogen Candida tropicalis. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113144] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Zhang Y, Wei J, Guo H, Niu C, Yuan Y, Yue T. Phenotypic and Transcriptomic Analyses Reveal the Cell Membrane Damage of Pseudomonas fragi Induced by Cinnamic Acid. Front Microbiol 2022; 12:796754. [PMID: 35058913 PMCID: PMC8764163 DOI: 10.3389/fmicb.2021.796754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Accepted: 12/03/2021] [Indexed: 11/13/2022] Open
Abstract
Cinnamic acid (CA) is a safe and effective antimicrobial agent. The objective of this study was to reveal the antibacterial mechanism of CA against a food-derived Pseudomonas fragi 38-8, from the aspects of bacterial growth kinetics, cell membrane homeostasis, cell microstructure, and transcription. The minimum inhibitory concentration (MIC) of CA against P. fragi 38-8 was 0.25 mg/ml. CA retarded bacterial growth and induced a series of cell membrane changes. After CA treatment, cell membrane homeostasis was destroyed, which was evidenced by cell membrane depolarization, intracellular pH reduction, and intracellular ATPase activity decrease. Field emission scanning electron microscope (FESEM), transmission electron microscope (TEM), and confocal laser scanning fluorescence microscope (CLSM) realized the visualization of cell microstructure changes, showing cell death and morphological changes, such as cell rupture, shrinkage, and hollowness. RNA sequencing analysis further confirmed the effects of CA to the cell membrane, because of the significant enrichment of differentially expressed genes (DEGs) related to membrane. The results of the phenotype tests and RNA-seq both focused on cell membrane damage, which showed that CA exerted antibacterial effect mainly by acting on cell membrane.
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Affiliation(s)
- Yuxiang Zhang
- College of Food Science and Technology, Northwest University, Xi'an, China.,College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Jianping Wei
- College of Food Science and Technology, Northwest University, Xi'an, China
| | - Hong Guo
- College of Food Science and Technology, Northwest University, Xi'an, China
| | - Chen Niu
- College of Food Science and Technology, Northwest University, Xi'an, China
| | - Yahong Yuan
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Tianli Yue
- College of Food Science and Technology, Northwest University, Xi'an, China.,College of Food Science and Engineering, Northwest A&F University, Yangling, China
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13
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Liao W, Dumas E, Ghnimi S, Elaissari A, Gharsallaoui A. Effect of emulsifier and droplet size on the antibacterial properties of emulsions and emulsion‐based films containing essential oil compounds. J FOOD PROCESS PRES 2021. [DOI: 10.1111/jfpp.16072] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Wei Liao
- Univ. Lyon, University Claude Bernard Lyon 1, CNRS, LAGEPP UMR 5007 Villeurbanne France
| | - Emilie Dumas
- Univ. Lyon, University Claude Bernard Lyon 1, CNRS, LAGEPP UMR 5007 Villeurbanne France
| | - Sami Ghnimi
- Univ. Lyon, University Claude Bernard Lyon 1, CNRS, LAGEPP UMR 5007 Villeurbanne France
| | - Abdelhamid Elaissari
- Univ. Lyon, University Claude Bernard Lyon 1, CNRS, ISA‐UMR 5280 Villeurbanne France
| | - Adem Gharsallaoui
- Univ. Lyon, University Claude Bernard Lyon 1, CNRS, LAGEPP UMR 5007 Villeurbanne France
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14
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Peng R, Du C, Hu A, Li Q, Zhang J, Zhang W, Sun F. Fabrication of core-shell type poly(NIPAm)-encapsulated citral and its application on bamboo as an anti-molding coating. RSC Adv 2021; 11:36884-36894. [PMID: 35494364 PMCID: PMC9043580 DOI: 10.1039/d1ra06352a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Accepted: 11/01/2021] [Indexed: 11/21/2022] Open
Abstract
Bamboo is a widely used renewable and degradable biomass material; however, its sustainable utilisation is hindered by its susceptibility to mold. The current bamboo anti-mold technology is mainly based on organic chemical agents; these agents can easily induce mold resistance in bamboo with long-term use, and can even adversely affect human health. In the present study, the poly(N-isopropyl acrylamide) (PNIPAm)/citral nanohydrogel was prepared by encapsulating the natural antibiotic citral in PNIPAm for the anti-mold treatment of bamboo. The results revealed that this nanohydrogel exhibited a core-shell system with citral as the 'core' and PNIPAm as the 'shell', an average hydrodynamic diameter of 88.1 nm, and a low critical solution temperature (LCST) of 35.4 °C. After the high-pressure impregnation with the nanohydrogel, the bamboo strips showed excellent control effects toward common bamboo molds. Therefore, the nanohydrogel demonstrated high efficiency and it may become an ideal alternative to organic chemical anti-mold agents, thus showcasing its significant potential in the field of mold prevention for bamboo.
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Affiliation(s)
- Rui Peng
- College of Chemistry and Materials Engineering, Zhejiang A & F University Hangzhou 311300 Zhejiang China
| | - Chungui Du
- College of Chemistry and Materials Engineering, Zhejiang A & F University Hangzhou 311300 Zhejiang China
| | - Ailian Hu
- College of Chemistry and Materials Engineering, Zhejiang A & F University Hangzhou 311300 Zhejiang China
| | - Qi Li
- College of Chemistry and Materials Engineering, Zhejiang A & F University Hangzhou 311300 Zhejiang China
| | - Jingjing Zhang
- College of Chemistry and Materials Engineering, Zhejiang A & F University Hangzhou 311300 Zhejiang China
| | - Weigang Zhang
- College of Chemistry and Materials Engineering, Zhejiang A & F University Hangzhou 311300 Zhejiang China
| | - Fangli Sun
- College of Chemistry and Materials Engineering, Zhejiang A & F University Hangzhou 311300 Zhejiang China
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15
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Galovičová L, Borotová P, Valková V, Kačániová M. Antibiofilm and antioxidant activity of Rosmarinus officinalis essential oil. POTRAVINARSTVO 2021. [DOI: 10.5219/1693] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The aim of the work was to explore the antioxidant potential and antibiofilm activity of the Rosmarinus officinalis essential oil. The DPPH method was used to determine the antioxidant activity. The agar microdilution method was used to determine the minimum biofilm inhibiting concentration (MBIC). The MALDI-TOF MS Biotyper was used to evaluate the antibiofilm activity on the wood and glass surface. Vapor phase antimicrobial analysis was used to determine the effect on the food model. The antioxidant activity was 28.76 % ± 2.68 %. The MBIC for Stenotrophomonas maltophilia was 25 µL.mL-1 and for Bacillus subtilis 12.5 µL.mL-1. Analysis of the mass spectra of S. maltophilia revealed an inhibitory effect from the 5th, which persisted until the end of the experiment. Analysis of the mass spectra of B. subtilis showed an inhibitory effect from the 7th of the experiment. The experiments showed an effect on both tested surfaces. The food model showed a more pronounced effect of the Rosmarinus officinalis essential oil against B. subtilis. We assume that the effect of the essential oil is to disrupt the polysaccharide structure of the biofilm and consequently reduce the resistance of the biofilm. We have established that MALDI-TOF MS Biotyper is a suitable tool for evaluating changes in biofilm structure and could find more significant application for the study of biofilms in food and clinical practice.
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16
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Felix E Silva A, Pires IC, da Costa MM, Melo JFB, Lorenzo VP, de Melo FVST, Copatti CE. Antibacterial and antibiofilm activities and synergism with florfenicol from the essential oils of Lippia sidoides and Cymbopogon citratus against Aeromonas hydrophila. J Appl Microbiol 2021; 132:1802-1812. [PMID: 34689393 DOI: 10.1111/jam.15336] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 09/21/2021] [Accepted: 10/11/2021] [Indexed: 11/27/2022]
Abstract
AIMS Aeromonas hydrophila is an opportunistic bacterium, with a high capacity for biofilm production, which can cause severe damage in aquaculture. The objective of this study was to identify the chemical compounds of the essential oils of Lippia sidoides (EOLS) and Cymbopogon citratus (EOCC), and to evaluate the biocidal, antibiofilm and synergistic action with the antimicrobial florfenicol of these essential oils (EOs) against A. hydrophila. METHODS AND RESULTS The antibacterial activity of EOLS and EOCC was verified by the minimum bactericidal concentration and by the action of these EOs against both forming and consolidated biofilms. The synergistic activity of EOs with florfenicol was performed using the checkerboard technique. The main component of EOLS and EOCC was carvacrol (44.50%) and α-citral (73.56%), respectively. Both EOs showed weak inhibitory activity (≥3125.00 µg ml-1 ). Two bacterial isolates were able to produce biofilm, and EOLS and EOCC acted upon the bacterial isolates to prevent biofilm formation. A bactericidal effect was verified for EOLS in the previously consolidated biofilm for both isolates and for EOCC in only one of the isolates. In general, EOLS had a synergistic effect with florfenicol, while EOCF had an additive effect. CONCLUSIONS Both EOs were able to interfere with biofilm formation and did not have an antagonistic effect in combination with florfenicol. The best results were found for EOLS, which showed a synergistic effect with florfenicol and the ability to interfere in the formation of consolidated biofilm. SIGNIFICANCE AND IMPACT OF THE STUDY This study highlights the potential of EOLS and EOCC to interfere in biofilm and act in synergy with florfenicol to reduce the occurrence of A. hydrophila. Development of these compounds may contribute to the development of herbal medicines in aquaculture.
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Affiliation(s)
- Altiery Felix E Silva
- Programa de Pós-Graduação em Zootecnia, Universidade Federal da Bahia, Salvador, BA, Brazil
| | - Isabelle C Pires
- Departamento de Zootecnia, Universidade Federal do Vale do São Francisco, Petrolina, PE, Brazil
| | - Mateus M da Costa
- Departamento de Zootecnia, Universidade Federal do Vale do São Francisco, Petrolina, PE, Brazil
| | - José F B Melo
- Departamento de Zootecnia, Universidade Federal do Vale do São Francisco, Petrolina, PE, Brazil
| | - Vitor P Lorenzo
- Instituto Federal do Sertão Pernambucano, Campus Petrolina Setor Rural, Petrolina, PE, Brazil
| | | | - Carlos E Copatti
- Programa de Pós-Graduação em Zootecnia, Universidade Federal da Bahia, Salvador, BA, Brazil
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17
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Félix G, Soto-Robles CA, Nava E, Lugo-Medina E. Principal Metabolites in Extracts of Different Plants Responsible for Antibacterial Effects. Chem Res Toxicol 2021; 34:1970-1983. [PMID: 34464103 DOI: 10.1021/acs.chemrestox.1c00161] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The increase in bacterial resistance and decreased effectiveness of antibacterial agents has forced researchers to look for new antibacterial agents from environmentally friendly sources such as essential oils and oil extracts. The functional group of the metabolites present in the essential oils or plant extract and the synergy effects between them play an important role in the biological activity and can be the principal factor affecting the antibacterial effect. All of these bioactive oils showed the same action mechanism, and the best way to implement them is by extracting them without changing their original properties, whereby the characterization and evaluation of the compounds are important steps. All of these themes are extensively reviewed, analyzed, and discussed in this work.
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Affiliation(s)
- Guillermo Félix
- Tecnológico Nacional de México/IT de Los Mochis, C.P. 81259 Los Mochis, Sinaloa México
| | - Carlos A Soto-Robles
- Tecnológico Nacional de México/IT de Los Mochis, C.P. 81259 Los Mochis, Sinaloa México
| | - Eusebio Nava
- Centro Interdisciplinario de Investigación y Desarrollo Regional - Instituto Politécnico Nacional, C.P. 81101 Guasave, Sinaloa México
| | - Eder Lugo-Medina
- Tecnológico Nacional de México/IT de Los Mochis, C.P. 81259 Los Mochis, Sinaloa México
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18
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Nourbakhsh F, Lotfalizadeh M, Badpeyma M, Shakeri A, Soheili V. From plants to antimicrobials: Natural products against bacterial membranes. Phytother Res 2021; 36:33-52. [PMID: 34532918 DOI: 10.1002/ptr.7275] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 07/16/2021] [Accepted: 08/25/2021] [Indexed: 12/24/2022]
Abstract
Bacterial membrane barrier provides a cytoplasmic environment for organelles of bacteria. The membrane is composed of lipid compounds containing phosphatide protein and a minimal amount of sugars, and is responsible for intercellular transfers of chemicals. Several antimicrobials have been found that affect bacterial cytoplasmic membranes. These compounds generally disrupt the organization of the membrane or perforate it. By destroying the membrane, the drugs can permeate and replace the effective macromolecules necessary for cell life. Furthermore, they can disrupt electrical gradients of the cells through impairment of the membrane integrity. In recent years, considering the spread of microbial resistance and the side effects of antibiotics, natural antimicrobial compounds have been studied by researchers extensively. These molecules are the best alternative for controlling bacterial infections and reducing drug resistance due to the lack of severe side effects, low cost of production, and biocompatibility. Better understanding of the natural compounds' mechanisms against bacteria provides improved strategies for antimicrobial therapies. In this review, natural products with antibacterial activities focusing on membrane damaging mechanisms were described. However, further high-quality research studies are needed to confirm the clinical efficacy of these natural products.
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Affiliation(s)
- Fahimeh Nourbakhsh
- Medical Toxicology Research Centre, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Marzieh Lotfalizadeh
- Department of Obstetrics and Gynecology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohaddeseh Badpeyma
- Student Research Committee, Department of Clinical Nutrition, Nutrition Research Center, School of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Abolfazl Shakeri
- Department of Pharmacognosy, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Vahid Soheili
- Department of Pharmaceutical Control, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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19
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Azizi-Lalabadi M, Rahimzadeh-Sani Z, Feng J, Hosseini H, Jafari SM. The impact of essential oils on the qualitative properties, release profile, and stimuli-responsiveness of active food packaging nanocomposites. Crit Rev Food Sci Nutr 2021; 63:1822-1845. [PMID: 34486886 DOI: 10.1080/10408398.2021.1971154] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Food industries attempt to introduce a new food packaging by blending essential oils (EOs) into the polymeric matrix as an active packaging, which has great ability to preserve the quality of food and increase its shelf life by releasing active compounds within storage. The main point in designing the active packaging is controlled-release of active substances for their enhanced activity. Biopolymers are functional substances, which suggest structural integrity to sense external stimuli like temperature, pH, or ionic strength. The controlled release of EOs from active packaging and their stimuli-responsive properties can be very important for practical applications of these novel biocomposites. EOs can affect the uniformity of the polymeric matrix and physical and structural characteristics of the composites, such as moisture content, solubility in water, water vapor transmission rate, elongation at break, and tensile strength. To measure the ingredients of EOs and their migration from food packaging, chromatographic methods can be used. A head-space-solid phase micro-extraction coupled to gas chromatography (HS-SPME-GC-MS) technique is as a good process for evaluating the release of Eos. Therefore, the aims of this review were to evaluate the qualitative characteristics, release profile, and stimuli-responsiveness of active and smart food packaging nanocomposites loaded with essential oils and developing such multi-faceted packaging for advanced applications.
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Affiliation(s)
- Maryam Azizi-Lalabadi
- Research Center for Environmental Determinants of Health (RCEDH), Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Zeinab Rahimzadeh-Sani
- Nutrition Research Center, Department of Food Sciences and Technology, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Jianguo Feng
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
| | - Hamed Hosseini
- Department of Mechanical Engineering, Faculty of Engineering, Golestan University, Gorgan, Iran
| | - Seid Mahdi Jafari
- Department of Food Materials and Process Design Engineering, Gorgan University of Agricultural Science and Natural Resources, Gorgan, Iran
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20
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Antifungal efficacy of paeonol on Aspergillus flavus and its mode of action on cell walls and cell membranes. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111985] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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21
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Eugenol, citral, and hexanal, alone or in combination with heat, affect viability, biofilm formation, and swarming on Shiga-toxin-producing Escherichia coli. Food Sci Biotechnol 2021; 30:599-607. [PMID: 33936852 DOI: 10.1007/s10068-021-00887-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 02/03/2021] [Accepted: 02/05/2021] [Indexed: 10/21/2022] Open
Abstract
Shiga-toxin-producing Escherichia coli strains are pathogenic for humans and cause mild to severe illnesses. In this study, the antimicrobial effect of citral, eugenol, and hexanal in combination with heat shock (HS) was evaluated in terms of the growth, biofilm formation, swarming, and expression of virulence genes of STEC serotypes (O157:H7, O103, O111, and O26). Eugenol was the most effective compound against the growth of E. coli strains (MBC = 0.58 to 0.73 mg/mL), followed by citral (MBC = 0.86 to 1.26 mg/mL) and hexanal (MBC = 2.24 to 2.52 mg/mL). Biofilm formation and swarming motility have great variability between STEC strains. Natural compounds-alone or combined with HS-inhibited biofilm formation; however, swarming motility was induced by most treatments. The expression of the studied genes during biofilm formation and swarming under natural antimicrobials was affected but not in a uniform pattern. These treatments could be used to control contamination of STEC and inhibit biofilm formation.
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22
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Zhang J, Du C, Li Q, Hu A, Peng R, Sun F, Zhang W. Inhibition mechanism and antibacterial activity of natural antibacterial agent citral on bamboo mould and its anti-mildew effect on bamboo. ROYAL SOCIETY OPEN SCIENCE 2021; 8:202244. [PMID: 33996126 PMCID: PMC8059595 DOI: 10.1098/rsos.202244] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 03/29/2021] [Indexed: 05/14/2023]
Abstract
Bamboo, a natural material, has been widely used in the fields of decoration, architecture and furniture. However, bamboo is easy to mildew and lose its use value. In this paper, the inhibition mechanism and antibacterial activity of a natural antibacterial agent citral on bamboo mould and its anti-mildew effect on bamboo were studied. The results showed that citral could change the shape of mycelium, destroy the integrity of mycelium structure, cell wall and cell membrane structure, thereby causing leakage of nucleic acids, proteins and other substances in the cell, as well as destroy the pH balance of the inside and outside of the cell, to inhibit or kill mould. When the concentration of citral is 100 mg ml-1, the antibacterial rates of citral against Penicillium citrinum (PC), Trichoderma viride (TV), Aspergillus niger (AN) and a hybrid fungi group comprising PC, TV and AN (Hun) were more than 100%. However, compared with the direct effect of citral on mould, the antibacterial property of bamboo treated with citral was significantly reduced, the mildew proof effect can be achieved only if the concentration of citral to treat bamboo is increased to more than twice the concentration of citral directly acting on mould.
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Affiliation(s)
- Jingjing Zhang
- School of Engineering, Zhejiang A&F University, Hangzhou 311300, People's Republic of China
| | - Chungui Du
- School of Engineering, Zhejiang A&F University, Hangzhou 311300, People's Republic of China
| | - Qi Li
- School of Engineering, Zhejiang A&F University, Hangzhou 311300, People's Republic of China
| | - Ailian Hu
- School of Engineering, Zhejiang A&F University, Hangzhou 311300, People's Republic of China
| | - Rui Peng
- School of Engineering, Zhejiang A&F University, Hangzhou 311300, People's Republic of China
| | - Fangli Sun
- School of Engineering, Zhejiang A&F University, Hangzhou 311300, People's Republic of China
| | - Weigang Zhang
- School of Engineering, Zhejiang A&F University, Hangzhou 311300, People's Republic of China
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23
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Ni R, Wang P, Zhan P, Tian H, Li T. Effects of different frying temperatures on the aroma profiles of fried mountain pepper (Litsea cubeba (Lour.) Pers.) oils and characterization of their key odorants. Food Chem 2021; 357:129786. [PMID: 33984740 DOI: 10.1016/j.foodchem.2021.129786] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 04/04/2021] [Accepted: 04/07/2021] [Indexed: 02/07/2023]
Abstract
Fried mountain pepper (Litsea cubeba (Lour.) Pers.) oil is widely used as a traditional spice flavoring oil in Chinese home cooking. To investigate the effects of different frying temperatures on the aroma of fried mountain pepper oil (FPO), four FPO samples were analyzed by descriptive sensory analysis (DSA), E-nose, gas chromatography-olfactometry/detection frequency analysis (GC-O/DFA) and odor activity value (OAV) calculation. DSA and E-nose results both indicated that significant differences existed among 4 FPOs, among which FPO3 showed superiority in several sensory attributes. 16 and 20 aroma-active compounds were screened by DFA and OAV, respectively. Thereafter, three aroma recombination models were performed, and results indicated the model solution derived from the combination of OAV and DFA was more closely resembled the FPO aroma. Omission tests corroborated the significant contributions of 11 compounds (1-octen-3-ol, linalool, geraniol, nonanal, (E)-2-octenal, citral, citronellal, limonene, α-pinene, β-myrcene and methylheptenone) to the characteristic aroma of FPO.
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Affiliation(s)
- Ruijie Ni
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710100, China
| | - Peng Wang
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710100, China
| | - Ping Zhan
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710100, China; The Engineering Research Center for High-Valued Utilization of Fruit Resources in Western China, Ministry of Education, Xi'an 710100, China.
| | - Honglei Tian
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710100, China; Food College of Shihezi University, Shihezi 832000, China; Shaanxi Provincial Research Center of Functional Food Engineering Technology, Xi'an 710100, China.
| | - Ting Li
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710100, China
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24
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Ning HQ, Li YQ, Lin H, Wang JX. Apoptosis-induction effect of ε-poly-lysine against Staphylococcus aureus and its application on pasteurized milk. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2020.110493] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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25
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β-Cyclodextrin Inclusion Complex Containing Litsea cubeba Essential Oil: Preparation, Optimization, Physicochemical, and Antifungal Characterization. COATINGS 2020. [DOI: 10.3390/coatings10090850] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Litsea cubeba essential oil (LCEO), as naturally plant-derived products, possess good antimicrobial activities against many pathogens, but their high volatility and poor water solubility limit greatly the application in food industry. In this research, inclusion complex based on β-cyclodextrin (β-CD) and LCEO, was prepared by saturated aqueous solution method. An optimum condition using the response surface methodology (RSM) based on Box–Behnken design (BBD) was obtained with the inclusion time of 2 h and β-CD/LCEO ratio of 4.2 at 44 °C. Under the condition, the greatest yield of 71.71% with entrapment efficiency of 33.60% and loading capacity of 9.07% was achieved. In addition, the structure and characteristic of LCEO/β-CD inclusion complex (LCEO/βCD-IC) were investigated using scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FT-IR), which indicated that LCEO/βCD-IC was successfully formed. The particle size of LCEO/βCD-IC was determined to be 17.852 μm. Thermal properties of LCEO/βCD-IC evaluated by thermogravimetric-differential scanning calorimetry (TG-DTA) illustrated better thermal stability of the aimed product compared with the physical mixture. Furthermore, the tests of antifungal activity showed that LCEO/βCD-IC was able to control the growth of Penicillium italicum, Penicillium digitatum, and Geotrichum citri-aurantii isolated from postharvest citrus. Our present study confirmed that LCEO/βCD-IC might be further applied as an alternative to chemical fungicides for protecting citrus fruit from postharvest disease.
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26
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Ju J, Xie Y, Yu H, Guo Y, Cheng Y, Qian H, Yao W. Analysis of the synergistic antifungal mechanism of eugenol and citral. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.109128] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Usach I, Margarucci E, Manca ML, Caddeo C, Aroffu M, Petretto GL, Manconi M, Peris JE. Comparison between Citral and Pompia Essential Oil Loaded in Phospholipid Vesicles for the Treatment of Skin and Mucosal Infections. NANOMATERIALS 2020; 10:nano10020286. [PMID: 32046201 PMCID: PMC7075235 DOI: 10.3390/nano10020286] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 01/30/2020] [Accepted: 02/05/2020] [Indexed: 01/04/2023]
Abstract
Citrus species extracts are well known sources of bio-functional compounds with health-promoting effects. In particular, essential oils are known for their antibacterial activity due to the high content of terpenes. In this work, the steam-distilled essential oil from the leaves of Citrus limon var. pompia was loaded in phospholipid vesicles. The physico-chemical characteristics of the essential oil loaded vesicles were compared with those of vesicles that were loaded with citral, which is one of the most abundant terpenes of Citrus essential oils. The biocompatibility of the vesicles was assessed in vitro in human keratinocytes. Furthermore, the antimicrobial activity of the vesicles was tested while using different bacterial strains and a yeast: Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, and Candida albicans, respectively. The vesicles were small in size (~140 nm), slightly polydispersed (PI ~ 0.31), highly negatively charged (~ −73 mV), and able to incorporate high amounts of essential oil or citral (E% ~ 86%). Pompia essential oil and citral exhibited antimicrobial activity against all of the assayed microorganisms, with P. aeruginosa being the least sensitive. Citral was slightly more effective than pompia essential oil against E. coli, S. aureus, and C. albicans. The incorporation of citral in vesicles improved its antifungal activity against C. albicans.
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Affiliation(s)
- Iris Usach
- Department of Pharmacy, Pharmaceutical Technology and Parasitology, University of Valencia, Avda. V. Andrés Estellés, s/n Burjassot, Valencia 46100, Spain; (I.U.); (E.M.)
| | - Elisabetta Margarucci
- Department of Pharmacy, Pharmaceutical Technology and Parasitology, University of Valencia, Avda. V. Andrés Estellés, s/n Burjassot, Valencia 46100, Spain; (I.U.); (E.M.)
- Department of Scienze della Vita e dell’Ambiente, University of Cagliari, Via Ospedale 72, Cagliari 09124, Italy; (M.L.M.); (C.C.); (M.A.); (M.M.)
| | - Maria Letizia Manca
- Department of Scienze della Vita e dell’Ambiente, University of Cagliari, Via Ospedale 72, Cagliari 09124, Italy; (M.L.M.); (C.C.); (M.A.); (M.M.)
| | - Carla Caddeo
- Department of Scienze della Vita e dell’Ambiente, University of Cagliari, Via Ospedale 72, Cagliari 09124, Italy; (M.L.M.); (C.C.); (M.A.); (M.M.)
| | - Matteo Aroffu
- Department of Scienze della Vita e dell’Ambiente, University of Cagliari, Via Ospedale 72, Cagliari 09124, Italy; (M.L.M.); (C.C.); (M.A.); (M.M.)
| | - Giacomo L. Petretto
- Department of Chemistry and Pharmacy, University of Sassari, Sassari 07100, Italy;
| | - Maria Manconi
- Department of Scienze della Vita e dell’Ambiente, University of Cagliari, Via Ospedale 72, Cagliari 09124, Italy; (M.L.M.); (C.C.); (M.A.); (M.M.)
| | - José-Esteban Peris
- Department of Pharmacy, Pharmaceutical Technology and Parasitology, University of Valencia, Avda. V. Andrés Estellés, s/n Burjassot, Valencia 46100, Spain; (I.U.); (E.M.)
- Correspondence: ; Tel.: +34-963-543-353; Fax: +34-963-544-911
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Zhang Y, Wei J, Qiu Y, Niu C, Song Z, Yuan Y, Yue T. Structure-Dependent Inhibition of Stenotrophomonas maltophilia by Polyphenol and Its Impact on Cell Membrane. Front Microbiol 2019; 10:2646. [PMID: 31798564 PMCID: PMC6863799 DOI: 10.3389/fmicb.2019.02646] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 10/30/2019] [Indexed: 11/16/2022] Open
Abstract
As natural occurring antimicrobial substances, phenolic compounds have been used to inhibit various bacteria. Stenotrophomonas maltophilia 4–1, a strain isolated from food, exhibited spoilage potential in vitro with proteolysis and lipolysis at 25°C. The present study evaluated the antibacterial properties of 13 polyphenols on S. maltophilia 4–1, and selected 6 compounds (ferulic acid, p-coumaric acid, caffeic acid, chlorogenic acid, (−)-epigallocatechin, and phloretin) for binary combination treatments. The results revealed that antibacterial activities of polyphenols were structure-dependent, and cinnamic acid showed strong inhibitory effects, with a minimum inhibitory concentration (MIC) of 0.125 mg/mL. Importantly, we did not observe any obvious synergistic effects across all binary combinations. The antibacterial mechanism of cinnamic acid was related to membrane damage, caused by the loss of cell membrane integrity and alteration of cell morphology. These findings suggest that cinnamic acid is a promising candidate for the control of spoilage bacteria in food.
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Affiliation(s)
- Yuxiang Zhang
- College of Food Science and Engineering, Northwest A&F University, Yangling, China.,Laboratory of Quality & Safety Risk Assessment for Agro-products, Ministry of Agriculture, Yangling, China.,National Engineering Research Center of Agriculture Integration Test, Yangling, China
| | - Jianping Wei
- College of Food Science and Engineering, Northwest A&F University, Yangling, China.,Laboratory of Quality & Safety Risk Assessment for Agro-products, Ministry of Agriculture, Yangling, China.,National Engineering Research Center of Agriculture Integration Test, Yangling, China
| | - Yue Qiu
- College of Food Science and Engineering, Northwest A&F University, Yangling, China.,Laboratory of Quality & Safety Risk Assessment for Agro-products, Ministry of Agriculture, Yangling, China.,National Engineering Research Center of Agriculture Integration Test, Yangling, China
| | - Chen Niu
- College of Food Science and Technology, Northwest University, Xi'an, China
| | - Zihan Song
- College of Food Science and Engineering, Northwest A&F University, Yangling, China.,Laboratory of Quality & Safety Risk Assessment for Agro-products, Ministry of Agriculture, Yangling, China.,National Engineering Research Center of Agriculture Integration Test, Yangling, China
| | - Yahong Yuan
- College of Food Science and Engineering, Northwest A&F University, Yangling, China.,Laboratory of Quality & Safety Risk Assessment for Agro-products, Ministry of Agriculture, Yangling, China.,National Engineering Research Center of Agriculture Integration Test, Yangling, China
| | - Tianli Yue
- College of Food Science and Engineering, Northwest A&F University, Yangling, China.,Laboratory of Quality & Safety Risk Assessment for Agro-products, Ministry of Agriculture, Yangling, China.,National Engineering Research Center of Agriculture Integration Test, Yangling, China.,College of Food Science and Technology, Northwest University, Xi'an, China
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