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Ghazy O, Fouad M, Morsy T, Kholif A. Nanoemulsion formulation of Lawsonia inermis extract and its potential antimicrobial and preservative efficacy against foodborne pathogens. Food Control 2023. [DOI: 10.1016/j.foodcont.2022.109458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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2
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Hansen solubility parameters and green nanocarrier based removal of trimethoprim from contaminated aqueous solution. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Pardhi VP, Suthar T, Sharma A, Jain K. Bedaquiline fumarate microemulsion: formulation optimization, rheological characterization and in vitro studies. Nanomedicine (Lond) 2022; 17:1529-1546. [PMID: 36416115 DOI: 10.2217/nnm-2022-0132] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Aim: Bedaquiline fumarate (BQF), an antitubercular drug, shows limited bioavailability due to solubility-limited intestinal absorption. In this research, the authors formulated a BQF-loaded microemulsion to improve BQF's oral bioavailability. Methods: Microemulsion was prepared by a spontaneous emulsification method and evaluated for thermodynamic stability, size, dispersibility, transmittance, rheology, microrheology, drug release, cytotoxicity and cellular uptake. Results: Microemulsion showed an average globule size of 26.50 ± 6.29 nm with spherical geometry and revealed gel-sol-gel behavior in microrheological studies. Cytotoxicity and cell uptake studies in Caco-2 cells showed that BQF microemulsion was cytocompatible at the highest concentration of 500 μg/ml with significantly higher cellular uptake than control. Conclusion: The present study indicates that BQF microemulsion could be explored further for effective treatment of multidrug-resistant tuberculosis.
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Affiliation(s)
- Vishwas P Pardhi
- Department of Pharmaceutics, National Institute of Pharmaceutical Education & Research (NIPER)-Raebareli, Lucknow, Uttar Pradesh, 226002, India
| | - Teeja Suthar
- Department of Pharmaceutics, National Institute of Pharmaceutical Education & Research (NIPER)-Raebareli, Lucknow, Uttar Pradesh, 226002, India
| | - Ankita Sharma
- Department of Biotechnology, National Institute of Pharmaceutical Education & Research (NIPER)-Raebareli, Lucknow, Uttar Pradesh, 226002, India
| | - Keerti Jain
- Department of Pharmaceutics, National Institute of Pharmaceutical Education & Research (NIPER)-Raebareli, Lucknow, Uttar Pradesh, 226002, India
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Zhang H, Dong W, Long C, Li Q. Mechanism of Propofol-Lidocaine Hydrochloride Nano-Emulsion on Retinal Ganglion Cytopathic Effect in Diabetic Rats. J BIOMATER TISS ENG 2022. [DOI: 10.1166/jbt.2022.2868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The study drew attention to the influence mechanism of propofol and lidocaine hydrochloride nanoemulsion (NE) in the retinal ganglion cell pathology in diabetic rats. Specifically, the propofollidocaine hydrochloride NE was prepared using the emulsification method. The microscope and
laser particle size analyser were used to observe the morphology and particle size of NE, respectively. Also, the viscosity of the NE and the recovery rate of the main ingredient were explored. 45 adult male Wistar rats were randomly divided into control group (PBS control), model group (diabetes
model), and test group (diabetes model+propofol-lidocaine hydrochloride NE), with 15 rats in each group. The three groups were compared for the blood glucose, body weight, TNF-α and IL-1β mRNA levels in retinal tissue, and the number and apoptosis rate of ganglion
cells. It was found that the average particle size of the NE was 89.76 nm, the maximum absorption wavelength was 280.0 nm, and the viscosity was 106.49 N/m/s. The average recovery rate of propofol in NE was 99.91%, and that of lidocaine hydrochloride was 99.80%. At 12th week after modeling,
the blood glucose of the test group was lower versus the model group (P < 0.05); the blood glucose and body weight of rats in the control group were lower than those in the other two groups (P < 0.001). The test group exhibited lower mRNA levels of TNF-α and
IL-1β and apoptosis index of retinal ganglion cells versus the model group (P < 0.05). The model group showed a lower number of retinal ganglion cells versus the other two groups (P < 0.05). It was inferred that propofol-lidocaine hydrochloride NE of a small
particle size and good syringeability can notably reduce blood glucose, TNF-α and IL-1β mRNA levels, and retinal ganglion cell apoptosis index, and at the same time increase the number of retinal ganglion cells.
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Affiliation(s)
- He Zhang
- Department of Anaesthesiology, Xianning Central Hospital, The First Affiliated Hospital of Hubei University of Science and Technology, Xianning, 437100, Hubei, China
| | - Wenli Dong
- Department of Anaesthesiology, Xianning Central Hospital, The First Affiliated Hospital of Hubei University of Science and Technology, Xianning, 437100, Hubei, China
| | - Chao Long
- Department of Anaesthesiology, Xianning Central Hospital, The First Affiliated Hospital of Hubei University of Science and Technology, Xianning, 437100, Hubei, China
| | - Qingchun Li
- School of Optometry, Hubei University of Science and Technology, Xianning, 437100, Hubei, China
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Yasuda M, Tabata M. Effect of emulsifiers on the discoloration of chlorophyll and their potential for use in green beverages. J Food Sci 2021; 86:3033-3045. [PMID: 34118058 DOI: 10.1111/1750-3841.15782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 04/09/2021] [Accepted: 04/26/2021] [Indexed: 11/29/2022]
Abstract
The discoloration of chlorophyll (Chl) by light is an ongoing issue for green beverages in the food industry. To suppress the discoloration of Chl in aqueous solution, the effects of different emulsifiers were investigated on the discoloration of Chl under ultraviolet (UV) irradiation to determine their potential application for use as food additives. Sucrose fatty acid ester (SE), sorbitan fatty acid ester (TW), and quillaja saponin (QS) were used as emulsifiers, while Triton X-100 (TX) was used for reference. The discoloration of Chl was measured using a color difference meter. The species of Chl in solution were determined using ultraviolet-visible (UV-Vis), fluorescence, and circular dichroism (CD) spectroscopy, and the particle size of Chl in solution was determined using dynamic light scattering. The Chl aggregates were observed by the observation of increased peak areas at longer wavelengths in the UV spectra of Chl, in addition to a reduced fluorescence intensity. The CD spectra showed that the Chl aggregates were arranged in a random structure. Furthermore, the average particle size of the Chl aggregates was determined to be approximately 100 nm. SE and QS were found to significantly enhance the formation of self-aggregates due to their high hydrophilicities compared to those of TW and TX. As a result, SE and QS protect themselves from light to suppress the discoloration of Chl. The present results therefore suggest that SE and QS are suitable emulsifiers to address the problem of Chl discoloration in beverages, such as green tea and vegetable juices. PRACTICAL APPLICATION: Chlorophyll (Chl), a green pigment present in vegetables and green tea, is discolored by light. In this study, it was found that emulsifiers (sucrose fatty acid ester and quillaja saponin) suppress the discoloration of Chl. The implementation of these emulsifiers as food additives would enable green tea or green vegetable juices to maintain their colors for long periods and could contribute significantly to the beverage industry.
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Affiliation(s)
- Midori Yasuda
- Department of Health and Nutrition Sciences, Nishikyushu University, Kanzaki, Saga, Japan
| | - Masaaki Tabata
- Department of Chemistry and Applied Chemistry, Graduate School of Science and Engineering, Saga University, Honjo-machi, Saga, Japan
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Janik-Zabrotowicz E, Arczewska M, Prochniewicz P, Świetlicka I, Terpiłowski K. Stability of Chlorophyll a Monomer Incorporated into Cremophor EL Nano-Micelles under Dark and Moderate Light Conditions. Molecules 2020; 25:E5059. [PMID: 33143338 PMCID: PMC7672595 DOI: 10.3390/molecules25215059] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 10/23/2020] [Accepted: 10/27/2020] [Indexed: 01/10/2023] Open
Abstract
In this paper, stability of chlorophyll a monomers encapsulated into the Cremophor EL nano-micelles was studied under dark and moderate light conditions, typical of a room with natural or artificial lighting, in the presence of oxygen. The pigment stability against visible light was determined using the dynamic light scattering and molecular spectroscopy (UV-Vis absorption and stationary fluorescence) methods. Chlorophyll a, at the molar concentration of 10-5 M, was dissolved in the 5 wt% Cremophor emulsion for comparison in the ethanolic solution. The stability of such a self-assembly pigment-detergent nano-system is important in the light of its application on the commercial-scale. The presented results indicate the high stability of the pigment monomeric molecular organization in the nano-emulsion. During the storage in the dark, the half-lifetime was calculated as about 7 months. Additionally, based on the shape of absorption and fluorescence emission spectra, chlorophyll aggregation in the Cremophor EL aqueous solution along with the time was excluded. Moreover, the average size of detergent micelles as chlorophyll carriers was not affected after 70 days of the nano-system storage. Pigment stability against the moderate white light (0.1 mW) did not differ significantly from storage conditions in the dark. The photooxidation products, detected by occurrence of new absorption and fluorescence emission bands, was estimated on the negligible level. The stability of such a self-assembly pigment-detergent nano-system would potentially broaden the field of chlorophyll a (chl a) application in the food industry, medicine or artificial photosynthesis models.
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Affiliation(s)
- Ewa Janik-Zabrotowicz
- Department of Cell Biology, Institute of Biological Sciences, Maria Curie-Sklodowska University, Akademicka 19, 20–033 Lublin, Poland;
| | - Marta Arczewska
- Department of Biophysics, University of Life Sciences in Lublin, Akademicka 13, 20–950 Lublin, Poland;
| | - Patrycja Prochniewicz
- Department of Cell Biology, Institute of Biological Sciences, Maria Curie-Sklodowska University, Akademicka 19, 20–033 Lublin, Poland;
| | - Izabela Świetlicka
- Department of Biophysics, University of Life Sciences in Lublin, Akademicka 13, 20–950 Lublin, Poland;
| | - Konrad Terpiłowski
- Department of Physical Chemistry-Interfacial Phenomena, Maria Curie-Sklodowska University, 3, 20–031 Lublin, Poland;
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Saito A, Yamamoto S, Ochi R, Inoue K, Hadano S, Watanabe S, Nakayama T, Niko Y. An Azide-Tethered Cremophor® ELP Surfactant Allowing Facile Post-Surface Functionalization of Nanoemulsions. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2020. [DOI: 10.1246/bcsj.20200014] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Airi Saito
- Research and Education Faculty, Multidisciplinary Science Cluster, Interdisciplinary Science Unit, Kochi University, 2-5-1 Akebono-cho, Kochi 780-8520, Japan
| | - Shinkuro Yamamoto
- Center for Photodynamic Medicine Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku, Kochi 783-8505, Japan
| | - Rika Ochi
- Research and Education Faculty, Multidisciplinary Science Cluster, Interdisciplinary Science Unit, Kochi University, 2-5-1 Akebono-cho, Kochi 780-8520, Japan
| | - Keiji Inoue
- Center for Photodynamic Medicine Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku, Kochi 783-8505, Japan
| | - Shingo Hadano
- Research and Education Faculty, Multidisciplinary Science Cluster, Interdisciplinary Science Unit, Kochi University, 2-5-1 Akebono-cho, Kochi 780-8520, Japan
| | - Shigeru Watanabe
- Research and Education Faculty, Multidisciplinary Science Cluster, Interdisciplinary Science Unit, Kochi University, 2-5-1 Akebono-cho, Kochi 780-8520, Japan
| | - Taku Nakayama
- Center for Photodynamic Medicine Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku, Kochi 783-8505, Japan
| | - Yosuke Niko
- Research and Education Faculty, Multidisciplinary Science Cluster, Interdisciplinary Science Unit, Kochi University, 2-5-1 Akebono-cho, Kochi 780-8520, Japan
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