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Zhu L, Liu Y, Liu J, Qiu X, Lin L. Preparation and characterization of tea tree essential oil microcapsule-coated packaging paper with bacteriostatic effect. Food Chem X 2024; 23:101510. [PMID: 38947341 PMCID: PMC11214406 DOI: 10.1016/j.fochx.2024.101510] [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: 04/30/2024] [Revised: 05/23/2024] [Accepted: 05/24/2024] [Indexed: 07/02/2024] Open
Abstract
We prepared tea tree essential oil microcapsules, and the microcapsules and pullulan were coated on kraft paper to prepare an antibacterial paper. The antibacterial activity, structural characterization, and thermal stability of the prepared microcapsules and packaging paper were then tested. We found that the retention rate of microcapsules reached 87.1% after a 70 min of high-temperature treatment. The minimum inhibitory concentrations of microcapsules to S. aureus and E. coli were 112 mg/mL and 224 mg/mL, and the bacteriostatic zones of the packaging paper to E. coli and S. aureus were 17.49 mm and 22.75 mm, respectively. The prepared microcapsules were irregular. The paper coating was formed via hydrogen bonding, which filled the pores of paper fibers. When compared with the base paper, the roughness of the paper was reduced to 7.16 nm (Rq) and 5.61 nm (Ra), and no thermal decomposition occurred at <288 °C, which together implies a good application prospect.
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Affiliation(s)
- Lin Zhu
- Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs, Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, Guangdong 524001, China
- Hainan Key Laboratory of Storage and Processing of Fruits and Vegetables, Zhanjiang, Guangdong 524001, China
| | - Yijun Liu
- Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs, Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, Guangdong 524001, China
- Hainan Key Laboratory of Storage and Processing of Fruits and Vegetables, Zhanjiang, Guangdong 524001, China
| | - Jiameng Liu
- Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs, Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, Guangdong 524001, China
- Hainan Key Laboratory of Storage and Processing of Fruits and Vegetables, Zhanjiang, Guangdong 524001, China
| | - Xunxia Qiu
- Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs, Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, Guangdong 524001, China
- Hainan Key Laboratory of Storage and Processing of Fruits and Vegetables, Zhanjiang, Guangdong 524001, China
| | - Lijing Lin
- Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs, Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, Guangdong 524001, China
- Hainan Key Laboratory of Storage and Processing of Fruits and Vegetables, Zhanjiang, Guangdong 524001, China
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Cavallo L, Menotti F, Roana J, Costa C, Longo F, Pagano C, Curtoni A, Bondi A, Banche G, Allizond V, Mandras N. Synergistic Effect of Essential Oils and Antifungal Agents in Fighting Resistant Clinical Isolates of Candida auris. Pharmaceutics 2024; 16:957. [PMID: 39065654 PMCID: PMC11279409 DOI: 10.3390/pharmaceutics16070957] [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: 06/17/2024] [Revised: 07/10/2024] [Accepted: 07/16/2024] [Indexed: 07/28/2024] Open
Abstract
Recently, a large number of nosocomial infections have been caused by an emerging pathogen that is rising as a worldwide issue in human health: Candida auris. This yeast is considered resistant to antifungals of the first-line therapies, and consequently it is related to morbidity and mortality. Therefore, the aim of this research was to determine the in vitro anti-C. auris activity against twenty-three resistant clinical strains of different essential oils (EOs), pure or in combination with traditional antifungal agents, mainly caspofungin, fluconazole, micafungin and 5-flucytosine. Broth dilution assay was performed to evaluate the fungistatic and fungicidal effectiveness of fifteen EOs towards all the C. auris isolates. The data demonstrated that EOs were able to prevent C. auris growth, with MIC values ranging from 0.03 to 1% for the efficacious EOs (thyme, cinnamon, geranium, clove bud, lemongrass and mentha of Pancalieri), whereas the MICs were >1% for the ineffective ones. Thereafter, the six most effective EOs were used to perform the checkerboard experiments by assaying simultaneously the activity of EOs and traditional antifungals towards two selected strains. The most promising synergic combinations towards C. auris, depending on the isolate, were those with micafungin and geranium, thyme, cinnamon, lemongrass or clove bud EOs, with fluconazole and mentha of Pancalieri EO, and with 5-flucytosine and mentha of Pancalieri EO. These EOs and their combinations with antifungal drugs may provide a useful therapeutic alternative that could reduce the dose of the individual components, limiting the overall side effects. These associations might be a prospective option for the future treatment of infections, thus helping to overcome the challenging issue of resistance in C. auris.
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Affiliation(s)
- Lorenza Cavallo
- Department of Public Health and Pediatrics, University of Torino, 10126 Turin, Italy; (L.C.); (F.M.); (J.R.); (C.C.); (F.L.); (C.P.); (A.C.); (A.B.); (V.A.); (N.M.)
| | - Francesca Menotti
- Department of Public Health and Pediatrics, University of Torino, 10126 Turin, Italy; (L.C.); (F.M.); (J.R.); (C.C.); (F.L.); (C.P.); (A.C.); (A.B.); (V.A.); (N.M.)
| | - Janira Roana
- Department of Public Health and Pediatrics, University of Torino, 10126 Turin, Italy; (L.C.); (F.M.); (J.R.); (C.C.); (F.L.); (C.P.); (A.C.); (A.B.); (V.A.); (N.M.)
| | - Cristina Costa
- Department of Public Health and Pediatrics, University of Torino, 10126 Turin, Italy; (L.C.); (F.M.); (J.R.); (C.C.); (F.L.); (C.P.); (A.C.); (A.B.); (V.A.); (N.M.)
- Azienda Ospedaliera Universitaria (A.O.U.) Città della Salute e della Scienza di Torino, 10126 Turin, Italy
| | - Fabio Longo
- Department of Public Health and Pediatrics, University of Torino, 10126 Turin, Italy; (L.C.); (F.M.); (J.R.); (C.C.); (F.L.); (C.P.); (A.C.); (A.B.); (V.A.); (N.M.)
| | - Claudia Pagano
- Department of Public Health and Pediatrics, University of Torino, 10126 Turin, Italy; (L.C.); (F.M.); (J.R.); (C.C.); (F.L.); (C.P.); (A.C.); (A.B.); (V.A.); (N.M.)
| | - Antonio Curtoni
- Department of Public Health and Pediatrics, University of Torino, 10126 Turin, Italy; (L.C.); (F.M.); (J.R.); (C.C.); (F.L.); (C.P.); (A.C.); (A.B.); (V.A.); (N.M.)
- Azienda Ospedaliera Universitaria (A.O.U.) Città della Salute e della Scienza di Torino, 10126 Turin, Italy
| | - Alessandro Bondi
- Department of Public Health and Pediatrics, University of Torino, 10126 Turin, Italy; (L.C.); (F.M.); (J.R.); (C.C.); (F.L.); (C.P.); (A.C.); (A.B.); (V.A.); (N.M.)
- Azienda Ospedaliera Universitaria (A.O.U.) Città della Salute e della Scienza di Torino, 10126 Turin, Italy
| | - Giuliana Banche
- Department of Public Health and Pediatrics, University of Torino, 10126 Turin, Italy; (L.C.); (F.M.); (J.R.); (C.C.); (F.L.); (C.P.); (A.C.); (A.B.); (V.A.); (N.M.)
| | - Valeria Allizond
- Department of Public Health and Pediatrics, University of Torino, 10126 Turin, Italy; (L.C.); (F.M.); (J.R.); (C.C.); (F.L.); (C.P.); (A.C.); (A.B.); (V.A.); (N.M.)
| | - Narcisa Mandras
- Department of Public Health and Pediatrics, University of Torino, 10126 Turin, Italy; (L.C.); (F.M.); (J.R.); (C.C.); (F.L.); (C.P.); (A.C.); (A.B.); (V.A.); (N.M.)
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Li J, Bao Y, Li Z, Cui H, Jiang Q, Hou C, Wang Y, Wu Y, Shang J, Xiao Y, Shu C, Wang Y, Wen B, Si X, Li B. Dual-function β-cyclodextrin/starch-based intelligent film with reversible responsiveness and sustained bacteriostat-releasing for food preservation and monitoring. Int J Biol Macromol 2023; 253:127168. [PMID: 37783251 DOI: 10.1016/j.ijbiomac.2023.127168] [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: 07/25/2023] [Revised: 09/22/2023] [Accepted: 09/28/2023] [Indexed: 10/04/2023]
Abstract
The full combination of high sensitivity indication and long-lasting bacteriostatic function is an innovative need to meet the practicality of intelligent film packaging systems for food products. Hence, Blueberry anthocyanins (BA) copigmentated by ferulic acid (FA) was used as an indicator, and cinnamon essential oil (CO) encapsulated by β-cyclodextrin (β-CD) as a bacteriostat, potato starch (PS) as a film-forming substrate to prepared a dual-function starch-based intelligent active packaging film with pH indicator and antibacterial function. FA had the best copigmentation effect with a threefold increase in a value compared to other phenolic acids. The ΔE value increased from 3.24 to 5.13 at pH 2-8, and the change was still prominent in acid-base alternating test, indicating a high response sensitivity. Notably, the yellow gamut of indicating terminus increased its visibility to the naked eye. The release behavior of CO from film was in line with Fick's diffusion. Meanwhile, the release of CO delayed to about 90 h through β-cyclodextrin encapsulation, showing a high growth-inhibition rate in E. coli and S. aureus of almost 100 %. In this study, a dual-function film with indication and bacteriostasis was prepared and enhanced with both, expanding its wide application in intelligent packaging of fresh food.
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Affiliation(s)
- Jiaxin Li
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China
| | - Yiwen Bao
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China
| | - Zhiying Li
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China
| | - Huijun Cui
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China
| | - Qiao Jiang
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China
| | - Chengli Hou
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, PR China
| | - Yidi Wang
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China
| | - Yunan Wu
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China
| | - Junzhe Shang
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China
| | - Yahua Xiao
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China
| | - Chi Shu
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China
| | - Yuehua Wang
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China
| | - Bo Wen
- Yingkou Dongsheng Industry Co., Ltd., 88 Qinghua Street, Yingkou High-tech Industrial Development Zone, Yingkou, Liaoning 115000, China
| | - Xu Si
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China.
| | - Bin Li
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China.
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Qiang Y, Wei H, Huang B, Chi H, Fu J. Inclusion complex of turmeric essential oil with hydroxypropyl-β-cyclodextrin: Preparation, characterization and release kinetics. Curr Res Food Sci 2023; 8:100668. [PMID: 38273896 PMCID: PMC10809120 DOI: 10.1016/j.crfs.2023.100668] [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: 09/16/2023] [Revised: 12/16/2023] [Accepted: 12/18/2023] [Indexed: 01/27/2024] Open
Abstract
The application of turmeric essential oil (TEO), a natural effective antibacterial agent, in food preservation is limited due to high volatility and low stability. This study aimed to improve its stability and release behavior by synthesizing TEO/hydroxypropyl-β-cyclodextrin (HP-β-CD) inclusion complex (IC) in a saturated aqueous solution. An orthogonal experimental design was used to determine the optimal process conditions (HP-β-CD to TEO, g/mL), 16:1; stirring speed, 850 r/min; encapsulation time, 2 h), achieving a comprehensive score value of 85.62% for TEO/HP-β-CD-IC. Through comprehensive characterization, the results showed that TEO was completely embedded in HP-β-CD with increased stability. Free TEO exhibited a weight loss of 67.64% between 30 and 300 °C, while TEO/HP-β-CD-IC had a mass loss of only 9.33%. HP-β-CD and TEO/HP-β-CD-IC showed positive ZP values that were 124.76 mV and 132.16 mV, respectively. The release behavior and release kinetics of TEO/HP-β-CD-ICs were also studied, and the results showed that TEO/HP-β-CD-IC release rate increased under higher temperature and relative humidity-consistent with Fick's diffusion.
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Affiliation(s)
- Yueyue Qiang
- Institute of Quality Standards & Testing Technology for Agro-products, Fujian Academy of Agricultural Sciences/ Fujian Key Laboratory of Agro-products Quality and Safety, Fuzhou, 350003, China
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Hang Wei
- Institute of Quality Standards & Testing Technology for Agro-products, Fujian Academy of Agricultural Sciences/ Fujian Key Laboratory of Agro-products Quality and Safety, Fuzhou, 350003, China
| | - Biao Huang
- Institute of Quality Standards & Testing Technology for Agro-products, Fujian Academy of Agricultural Sciences/ Fujian Key Laboratory of Agro-products Quality and Safety, Fuzhou, 350003, China
| | - Hongfei Chi
- Institute of Quality Standards & Testing Technology for Agro-products, Fujian Academy of Agricultural Sciences/ Fujian Key Laboratory of Agro-products Quality and Safety, Fuzhou, 350003, China
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Jianwei Fu
- Institute of Quality Standards & Testing Technology for Agro-products, Fujian Academy of Agricultural Sciences/ Fujian Key Laboratory of Agro-products Quality and Safety, Fuzhou, 350003, China
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
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Cao C, Xie P, Zhou Y, Guo J. Characterization, Thermal Stability and Antimicrobial Evaluation of the Inclusion Complex of Litsea cubeba Essential Oil in Large-Ring Cyclodextrins (CD9-CD22). Foods 2023; 12:foods12102035. [PMID: 37238853 DOI: 10.3390/foods12102035] [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: 04/02/2023] [Revised: 05/11/2023] [Accepted: 05/16/2023] [Indexed: 05/28/2023] Open
Abstract
Food safety issues are becoming increasingly important as a result of contamination with foodborne pathogenic bacteria. Plant essential oil is a safe and non-toxic natural antibacterial agent that can be used to develop antimicrobial active packaging materials. However, most essential oils are volatile and require protection. In the present study, LCEO and LRCD were microencapsulated through coprecipitation. The complex was investigated using GC-MS, TGA, and FT-IR spectroscopy. According to the experimental results, it was found that LCEO entered the inner cavity of the LRCD molecule and formed a complex with LRCD. LCEO had a significant and broad-spectrum antimicrobial effect against all five microorganisms tested. At 50 °C, the microbial diameter of the essential oil and its microcapsules showed the least change, indicating that this essential oil has high antimicrobial activity. In research on microcapsule release, LRCD has proven to be a perfect wall material for controlling the delayed release of essential oil and extending the duration of antimicrobial activity. LRCD effectively extends antimicrobial duration by encasing LCEO, thus improving its heat stability and antimicrobial activity. The results presented here indicate that LCEO/LRCD microcapsules can be further utilized in the food packaging industry.
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Affiliation(s)
- Chuan Cao
- Department of Food Inspection and Testing, College of Environment and Life Health, Anhui Vocational and Technical College, Hefei 230011, China
- Anhui Engineering Laboratory for Agro-Products Processing, College of Tea and Food Science & Technology, Anhui Agricultural University, Hefei 230036, China
- Food Processing Research Institute, Anhui Agricultural University, Hefei 230036, China
| | - Peng Xie
- Department of Food Inspection and Testing, College of Environment and Life Health, Anhui Vocational and Technical College, Hefei 230011, China
- Department of Applied Economics, College of Grain and Supplies, Nanjing Finance and Economics, Nanjing 210023, China
| | - Yibin Zhou
- Anhui Engineering Laboratory for Agro-Products Processing, College of Tea and Food Science & Technology, Anhui Agricultural University, Hefei 230036, China
- Food Processing Research Institute, Anhui Agricultural University, Hefei 230036, China
| | - Jing Guo
- Department of Food Inspection and Testing, College of Environment and Life Health, Anhui Vocational and Technical College, Hefei 230011, China
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Yuan Y, Ma M, Zhang S, Wang D. Efficient Utilization of Tea Resources through Encapsulation: Dual Perspectives from Core Material to Wall Material. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:1310-1324. [PMID: 36637407 DOI: 10.1021/acs.jafc.2c07346] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
With the high production and consumption of tea around the world, efficient utilization of tea byproducts (tea pruning, tea residues after production, and drinking) is the focus of improving the economy of the tea industry. This review comprehensively discusses the efficient utilization of tea resources by encapsulation from the dual perspectives of core material and wall material. The core material is mainly tea polyphenols, followed by tea oils. The encapsulation system for tea polyphenols includes microcapsules, nanoparticles, emulsions, gels, conjugates, metal-organic frameworks, liposomes, and nanofibers. In addition, it is also diversified for the encapsulation of tea oils. Tea resources as wall materials refer to tea saponins, tea polyphenols, tea proteins, and tea polysaccharides. The application of the tea-based delivery system widely involves functionally fortified food, meat preservation, film, medical treatment, wastewater treatment, and plant protection. In the future, the coencapsulation of tea resources as core materials and other functional ingredients, the precise targeting of these tea resources, and the wide application of tea resources in wall materials need to be focused on. In conclusion, the described technofunctional properties and future research challenges in this review should be followed.
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Affiliation(s)
- Yongkai Yuan
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Mengjie Ma
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Shuaizhong Zhang
- Marine Science Research Institute of Shandong Province, Qingdao 266104, China
| | - Dongfeng Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
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Carbohydrate-based functional ingredients derived from starch: Current status and future prospects. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.107729] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Cao C, Deng C, Hu J, Zhou Y. Formation and molecular dynamics simulation of inclusion complex of large-ring cyclodextrin and 4-terpineol. J Food Sci 2022; 87:4609-4621. [PMID: 36086891 DOI: 10.1111/1750-3841.16303] [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: 04/11/2022] [Revised: 07/22/2022] [Accepted: 08/02/2022] [Indexed: 12/01/2022]
Abstract
In the present study, the formation and structure of the inclusion compound of large-ring cyclodextrin and 4-terpineol were obtained through different experiments and molecular dynamics (MD) simulation. The analysis of FTIR, 1 H-NMR, and thermodynamic results confirmed the formation of clathrates. Analysis of molecular structure (root-mean-square deviation and radius of gyration), solubility, and interaction energy (Coul, H bond) based on MD simulations further clarified the nature of the clathrate and the conformational changes caused by guest molecules as well as inclusion complexes process trends. The inclusion complex reportedly has a new crystal structure with improved thermal stability. PRACTICAL APPLICATION: This is the first work to demonstrate the complex formation between 4-terpineol and large-ring cyclodextrin by molecular dynamics simulation. Molecular dynamics simulation confirmed the formation of inclusion complexes theoretically. Conformational changes of the molecules and the formation of complexes with improved thermal stability were observed. Complexing with large-ring cyclodextrin can be used as an effective means to encapsulate the aroma/flavor compounds.
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Affiliation(s)
- Chuan Cao
- The College of Environment and Chemical Engineering, Anhui Vocational and Technical College, Hefei, China.,Anhui Engineering Laboratory of Agricultural Products Processing, Anhui Agricultural University, Hefei, China
| | - Changyue Deng
- Anhui Engineering Laboratory of Agricultural Products Processing, Anhui Agricultural University, Hefei, China
| | - Jinwei Hu
- Anhui Engineering Laboratory of Agricultural Products Processing, Anhui Agricultural University, Hefei, China
| | - Yibin Zhou
- Anhui Engineering Laboratory of Agricultural Products Processing, Anhui Agricultural University, Hefei, China
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Preparation, Optimization, and Characterization of Inclusion Complexes of Cinnamomum longepaniculatum Essential Oil in β-Cyclodextrin. SUSTAINABILITY 2022. [DOI: 10.3390/su14159513] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Cinnamomum longepaniculatum essential oil (CLEO) possesses antibacterial, anti-inflammatory, and antioxidant activities. However, CLEO shows volatilization and poor solubility, which limits its application field. In this research, inclusion complexes of β-cyclodextrin (β-CD) with CLEO were produced, and its physicochemical properties were characterized. Response surface methodology was used to obtain optimum preparation conditions. A statistical model was generated to define the interactions among the selected variables. Results show that the optimal conditions were an H2O/β-CD ratio of 9.6:1 and a β-CD/CLEO ratio of 8:1, with the stirring temperature of 20 °C for the maximal encapsulation efficiency values. The physicochemical properties of CLEO/β-CD inclusion complexes (CLEO/β-CD-IC) were investigated. Fourier transform infrared spectroscopy showed that correlative characteristic bands of CLEO disappeared in the inclusion complex. X-ray diffraction presented different sharp peaks at the diffraction angle of CLEO/β-CD-IC. The thermogravimetric analysis demonstrated the thermal stability of CLEO was enhanced after encapsulation. Tiny aggregates with a smaller size of CLEO/β-CD-IC particles were observed by scanning electron microscopy. The comparison of β-CD, CLEO, and physical mixtures with CLEO/β-CD-IC confirmed the formation of inclusion complexes.
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Deng C, Cao C, Zhang Y, Hu J, Gong Y, Zheng M, Zhou Y. Formation and stabilization mechanism of β-cyclodextrin inclusion complex with C10 aroma molecules. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2021.107013] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Zhong X, Gao F, Wei H, Zhou H, Zhou X. Functionalization of mesoporous silica as an effective composite carrier for essential oils with improved sustained release behavior and long-term antibacterial performance. NANOTECHNOLOGY 2021; 33:035706. [PMID: 34649224 DOI: 10.1088/1361-6528/ac2fe2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 10/14/2021] [Indexed: 06/13/2023]
Abstract
In this work, a novel composite carrier system for loading essential oils was developed by using tetraethyl orthosilicate (TEOS) and (3-aminopropyl) triethoxysilane (APTES) as silica precursors and cetyl trimethyl ammonium bromide (CTAB) as a template, and the resultant aminated mesoporous silica was further chemically modified by polyacrylic acid (PAA). The obtained composite carriers exhibited a high loading capability toward tea tree oil (TTO), and they also significantly improved the release behavior of TTO due to the steric hindrance of silica mesopore and the polymer restriction. Besides, it was found that the release behavior followed the First-Order kinetic model, revealing that the release of TTO was driven by the concentration gradient. In addition, these composite carriers with essential oil-loaded demonstrated remarkable antibacterial performance againstE. coliandS. aureus, and they could retain antibacterial performance even after 50 d. Moreover, the antibacterial mechanism was also elucidated with the assistance of nucleic acid and conductivity measurements. Therefore, this work provides a facile and environmentally friendly approach to preparing effective composite carriers for improving the sustained release of essential oils, and the long-term antibacterial performance of these essential oil-loaded composite carriers makes them tremendously potential for practical applications.
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Affiliation(s)
- Ximing Zhong
- Innovative Institute for Plant Health, Key Laboratory of Agricultural Green Fine Chemicals of Guangdong Higher Education Institution, School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong 510225, People's Republic of China
| | - Fan Gao
- Innovative Institute for Plant Health, Key Laboratory of Agricultural Green Fine Chemicals of Guangdong Higher Education Institution, School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong 510225, People's Republic of China
| | - Hongjie Wei
- Innovative Institute for Plant Health, Key Laboratory of Agricultural Green Fine Chemicals of Guangdong Higher Education Institution, School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong 510225, People's Republic of China
| | - Hongjun Zhou
- Innovative Institute for Plant Health, Key Laboratory of Agricultural Green Fine Chemicals of Guangdong Higher Education Institution, School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong 510225, People's Republic of China
| | - Xinhua Zhou
- Innovative Institute for Plant Health, Key Laboratory of Agricultural Green Fine Chemicals of Guangdong Higher Education Institution, School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong 510225, People's Republic of China
- Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Mao Ming, Guangdong 525000, People's Republic of China
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