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Martin BA, Dalmolin LF, Lemos CN, de Menezes Vaidergorn M, da Silva Emery F, Vargas-Rechia CG, Ramos AP, Lopez RFV. Electrostimulable polymeric films with hyaluronic acid and lipid nanoparticles for simultaneous topical delivery of macromolecules and lipophilic drugs. Drug Deliv Transl Res 2024:10.1007/s13346-024-01526-9. [PMID: 38381316 DOI: 10.1007/s13346-024-01526-9] [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] [Accepted: 01/22/2024] [Indexed: 02/22/2024]
Abstract
This study focused on developing electrically stimulable hyaluronic acid (HA) films incorporating lipid nanoparticles (NPs) designed for the topical administration of lipophilic drugs and macromolecules. Based on beeswax and medium-chain triglycerides, NPs were successfully integrated into silk fibroin/chitosan films containing HA (NP-HA films) at a density of approximately 1011 NP/cm2, ensuring a uniform distribution. This integration resulted in a 40% increase in film roughness, a twofold decrease in Young's modulus, and enhanced film flexibility and bioadhesion work. The NP-HA films, featuring Ag/AgCl electrodes, demonstrated the capability to conduct a constant electrical current of 0.2 mA/cm2 without inducing toxicity in keratinocytes and fibroblasts during a 15-min application. Moreover, the NPs facilitated the homogeneous distribution of lipophilic drugs within the film, effectively transporting them to the skin and uniformly distributing them in the stratum corneum upon film administration. The sustained release of HA from the films, following Higuchi kinetics, did not alter the macroscopic characteristics of the film. Although anodic iontophoresis did not noticeably affect the release of HA, it did enhance its penetration into the skin. This enhancement facilitated the permeation of HA with a molecular weight (MW) of up to 2 × 105 through intercellular and transcellular routes. Confocal Raman spectroscopy provided evidence of an approximate 100% increase in the presence of HA with a MW in the range of 1.5-1.8 × 106 in the viable epidermis of human skin after only 15 min of iontophoresis applied to the films. Combining iontophoresis with NP-HA films exhibits substantial potential for noninvasive treatments focused on skin rejuvenation and wound healing.
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Affiliation(s)
- Bianca Aparecida Martin
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida Professor Doutor Zeferino Vaz, s/n, Ribeirão Preto, São Paulo, 14040-903, Brazil
| | - Luciana Facco Dalmolin
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida Professor Doutor Zeferino Vaz, s/n, Ribeirão Preto, São Paulo, 14040-903, Brazil
| | - Camila Nunes Lemos
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida Professor Doutor Zeferino Vaz, s/n, Ribeirão Preto, São Paulo, 14040-903, Brazil
| | - Miguel de Menezes Vaidergorn
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida Professor Doutor Zeferino Vaz, s/n, Ribeirão Preto, São Paulo, 14040-903, Brazil
| | - Flavio da Silva Emery
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida Professor Doutor Zeferino Vaz, s/n, Ribeirão Preto, São Paulo, 14040-903, Brazil
| | - Carem Gledes Vargas-Rechia
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida Professor Doutor Zeferino Vaz, s/n, Ribeirão Preto, São Paulo, 14040-903, Brazil
| | - Ana Paula Ramos
- Faculty of Philosophy, Sciences and Letters at Ribeirão Preto, University of São Paulo, Av. Bandeirantes, 3900, Ribeirão Preto, São Paulo, 14040-901, Brazil
| | - Renata F V Lopez
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida Professor Doutor Zeferino Vaz, s/n, Ribeirão Preto, São Paulo, 14040-903, Brazil.
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Crugeira PJL, Almeida HHS, Teixeira LG, Barreiro MF. Photodynamic inactivation of Staphylococcus aureus by ecological antibacterial solutions associating LED (ʎ 450 ± 10 nm) with curcumin and olive leaf extracts. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2023; 238:112626. [PMID: 36512898 DOI: 10.1016/j.jphotobiol.2022.112626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 11/03/2022] [Accepted: 12/07/2022] [Indexed: 12/14/2022]
Abstract
Antimicrobial resistance is a problem in contemporary society, with Staphylococcus aureus standing out as a threat due to its ability to colonize, its pathogenicity, and its expression of several virulence factors. In this context, antimicrobial photodynamic inactivation (aPDI) emerges as an alternative to conventional microbicidal or microbiostatic systems, enabling numerous and successive applications without developing side effects and microbial resistance. In this context, an aPDI system against cultures of S. aureus based on a water-in-oil (W/O) emulsion incorporating curcumin as the photosensitizer (PS), with and without olive leaf extract (OLE), was developed and the antibacterial efficacy evaluated under LED activation (ʎ450 ± 10 nm) by depositing an energy density of 14 J/cm2. The produced emulsified systems showed no significant differences in the droplet size and morphology, remaining stable along the tested period of 30 days. The bacterial reduction achieved after the first aPDI application for the emulsions added with curcumin and curcumin combined with the OLE was 5 log10 CFU.mL-1 and 6 log10 CFU.mL-1, respectively, revealing a significant difference between the two groups (p < 0.0001). After the second aPDI application, an increased microbial reduction (7 log10 CFU.mL-1) was observed for both studied groups even with a low significant difference (p < 0.05). The PS loading through an emulsified system for aPDI obtained a bactericidal action against S. aureus, increased by applying two aPDI, showing a significant synergy between photodynamic inactivation, OLE delivery and antibacterial activity. In addition, the developed solutions were produced using natural products by an ecologically correct process.
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Affiliation(s)
- Pedro J L Crugeira
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal; Laboratório Associado para a Sustentabilidade e Tecnologia em Regiões de Montanha (SusTEC), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal.
| | - Heloísa H S Almeida
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal; Laboratório Associado para a Sustentabilidade e Tecnologia em Regiões de Montanha (SusTEC), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal.
| | - Liandra G Teixeira
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal; Laboratório Associado para a Sustentabilidade e Tecnologia em Regiões de Montanha (SusTEC), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal.
| | - M Filomena Barreiro
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal; Laboratório Associado para a Sustentabilidade e Tecnologia em Regiões de Montanha (SusTEC), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal.
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Zhang M, Fan L, Liu Y, Huang S, Li J. Effects of proteins on emulsion stability: The role of proteins at the oil-water interface. Food Chem 2022; 397:133726. [PMID: 35908463 DOI: 10.1016/j.foodchem.2022.133726] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 06/26/2022] [Accepted: 07/14/2022] [Indexed: 11/15/2022]
Abstract
To obtain a stable protein-added emulsion system, researchers have focused on the design of the oil-water interface. This review discussed the updated details of protein adsorption behavior at the oil-water interface. We evaluated methods of monitoring interfacial proteins as well as their strengths and limitations. Based on the effects of structure on protein adsorption, we summarized the contribution of pre-changing methods to adsorption. In addition, the interaction of proteins and other surface-active molecules at the interface had been emphasized. Results showed that protein adsorption is affected by conformation, oil polarity and aqueous environments. The monitoring of interfacial proteins through spectroscopic properties in actual emulsion systems is an emerging trend. Pre-changing could improve the protein adsorption and the purpose of pre-changing of proteins is similar. In the interaction with other surface-active molecules, co-adsorption is desirable. By co-adsorption, the respective advantages can be exploited to obtain a more stable emulsion system.
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Affiliation(s)
- Mi Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Liuping Fan
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Yuanfa Liu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Shengquan Huang
- Nuspower Greatsun (Guangdong) Biotechnology Co., Ltd., Guangzhou 510931, China
| | - Jinwei Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
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Jurinjak Tušek A, Jurina T, Čulo I, Valinger D, Gajdoš Kljusurić J, Benković M. Application of NIRs coupled with PLS and ANN modelling to predict average droplet size in oil-in-water emulsions prepared with different microfluidic devices. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 270:120860. [PMID: 35033806 DOI: 10.1016/j.saa.2022.120860] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 12/27/2021] [Accepted: 01/03/2022] [Indexed: 06/14/2023]
Abstract
In this study, the potential of microfluidic systems with different microchannel geometries (microchannel with teardrop micromixers and microchannel with swirl micromixers) for the preparation of oil-in-water (O/W) emulsions using two different emulsifiers (2 % and 4 % Tween 20 and 2% and 4 % PEG 2000) at total flow rates of 20-280 μL/min was investigated. The results showed that droplets with a smaller average Feret diameter were obtained when a microfluidic device with tear drop micromixers was used. To predict the average Feret diameter of O/W emulsion droplets, near-infrared (NIR) spectra of all prepared emulsions were collected and coupled with partial least squares (PLS) regression and artificial neural network modelling (ANN). The results showed that PLS models based on NIR spectra can ensure acceptable qualitative prediction, while highly non-linear ANN models are more suitable for predicting the average Feret diameter of O/W droplets. High R2 values (R2validation greater than 0.8) confirm that ANNs can be used to monitor the emulsification process.
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Affiliation(s)
- Ana Jurinjak Tušek
- University of Zagreb, Faculty of Food Technology and Biotechnology, Pierottijeva 6, 10000 Zagreb, Croatia
| | - Tamara Jurina
- University of Zagreb, Faculty of Food Technology and Biotechnology, Pierottijeva 6, 10000 Zagreb, Croatia.
| | - Ivana Čulo
- University of Zagreb, Faculty of Food Technology and Biotechnology, Pierottijeva 6, 10000 Zagreb, Croatia
| | - Davor Valinger
- University of Zagreb, Faculty of Food Technology and Biotechnology, Pierottijeva 6, 10000 Zagreb, Croatia
| | - Jasenka Gajdoš Kljusurić
- University of Zagreb, Faculty of Food Technology and Biotechnology, Pierottijeva 6, 10000 Zagreb, Croatia
| | - Maja Benković
- University of Zagreb, Faculty of Food Technology and Biotechnology, Pierottijeva 6, 10000 Zagreb, Croatia
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5
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Dinache A, Pascu ML, Smarandache A. Spectral Properties of Foams and Emulsions. Molecules 2021; 26:7704. [PMID: 34946785 PMCID: PMC8707813 DOI: 10.3390/molecules26247704] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 12/13/2021] [Accepted: 12/14/2021] [Indexed: 11/17/2022] Open
Abstract
The optical and spectral properties of foams and emulsions provide information about their micro-/nanostructures, chemical and time stability and molecular data of their components. Foams and emulsions are collections of different kinds of bubbles or drops with particular properties. A summary of various surfactant and emulsifier types is performed here, as well as an overview of methods for producing foams and emulsions. Absorption, reflectance, and vibrational spectroscopy (Fourier Transform Infrared spectroscopy-FTIR, Raman spectroscopy) studies are detailed in connection with the spectral characterization techniques of colloidal systems. Diffusing Wave Spectroscopy (DWS) data for foams and emulsions are likewise introduced. The utility of spectroscopic approaches has grown as processing power and analysis capabilities have improved. In addition, lasers offer advantages due to the specific properties of the emitted beams which allow focusing on very small volumes and enable accurate, fast, and high spatial resolution sample characterization. Emulsions and foams provide exceptional sensitive bases for measuring low concentrations of molecules down to the level of traces using spectroscopy techniques, thus opening new horizons in microfluidics.
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Affiliation(s)
- Andra Dinache
- National Institute for Laser, Plasma and Radiation Physics, 077125 Magurele, Ilfov, Romania; (A.D.); (M.-L.P.)
| | - Mihail-Lucian Pascu
- National Institute for Laser, Plasma and Radiation Physics, 077125 Magurele, Ilfov, Romania; (A.D.); (M.-L.P.)
- Faculty of Physics, University of Bucharest, 077125 Magurele, Ilfov, Romania
| | - Adriana Smarandache
- National Institute for Laser, Plasma and Radiation Physics, 077125 Magurele, Ilfov, Romania; (A.D.); (M.-L.P.)
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Koppisetti HVSRM, Ganguli S, Ghosh S, Mahalingam V. Rejuvenating the Geometric Electrocatalytic OER Performance of Crystalline Co 3 O 4 by Microstructure Engineering with Sulfate. Chem Asian J 2021; 16:988-998. [PMID: 33667035 DOI: 10.1002/asia.202100175] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Indexed: 11/06/2022]
Abstract
Despite significant research on its electrocatalytic OER activity, the geometric performance of Co3 O4 has remained unsatisfactory compared to relatively amorphous Co-based materials. In particular, the activity of Co3 O4 prepared through annealing always gets inferior compared to its amorphous precursor. This demands the development of synthetic techniques to prepare Co3 O4 with superior activity as the unpredictable crystal structure of the amorphous materials makes it difficult to understand their structure-activity relationships despite higher geometric activity. In this article, we have shown that incorporation of sulfate in pre-annealed materials plays a pivotal role in boosting the OER activity of annealed Co3 O4 irrespective of the pre-annealed phase. In contrast to commonly used nitrate or carbonate that leaves the structure upon annealing and renders the resulting Co3 O4 with poor activity, sulfate remains in the annealed structure due to its thermal stability and causes a dramatic enhancement in the geometric electrocatalytic OER activity of resulting Co3 O4 compared to the pre-annealed phase. This was due to the "pore-alteration ability" and "crystallization hindrance effect" of sulfate ions that significantly alter the microstructure of the resulting Co3 O4 during annealing process by dramatically improving the surface area, pore size, and pore volume. Moreover, sulfate incorporation provided structures with considerably higher mesoporosity that is known to be conducive for reactant and product diffusion within the network. The improved textural properties led to better exposure of the catalytic centres to the electrolyte leading to higher geometric OER activity despite identical intrinsic activity of both sulfate free and incorporated Co3 O4 as confirmed from their specific activities. Further, the Co3 O4 synthesized by annealing sulfate incorporated precursor was found to be rich with oxygen defects that are known to increase the potency of a material towards electrocatalytic OER. The sulfate ions also etched out in the electrolyte during electrocatalysis leading to complete unblocking of the pores thereby helping in sustaining the high geometric OER activity. To our knowledge, this is the first report where the geometric electrocatalytic OER activity of an annealed Co3 O4 is significantly better compared to its pre-annealed phase and is in fact comparable to the activity of amorphous Co-hydroxide based compounds.
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Affiliation(s)
- Heramba V S R M Koppisetti
- NanoLab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur Nadia, West Bengal, India
| | - Sagar Ganguli
- NanoLab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur Nadia, West Bengal, India
| | - Sourav Ghosh
- NanoLab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur Nadia, West Bengal, India
| | - Venkataramanan Mahalingam
- NanoLab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur Nadia, West Bengal, India
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Preparation and drying of water-in-oil-in-water (W/O/W) double emulsion to encapsulate soy peptides. Food Res Int 2021; 141:110148. [PMID: 33642014 DOI: 10.1016/j.foodres.2021.110148] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Revised: 01/11/2021] [Accepted: 01/12/2021] [Indexed: 12/29/2022]
Abstract
Soy peptide solution (40%, w/w) was successfully encapsulated in a W1/O/W2 double emulsion produced by a two-step emulsification process. Polyglycerol polyricinoleate (PGPR) was found to be an effective inner emulsifier compared to Span 60 and lecithin to produce stable W1/O primary emulsion. The primary emulsion was subsequently emulsified into an outer aqueous phase (W2) containing octenyl succinic anhydride (OSA) starch and maltodextrin. The droplet size and encapsulation efficiency of the peptide solution in W1/O/W2 emulsion were found to depend on the W1:O ratio, peptide concentration in the inner W1 phase and homogenization condition of the secondary emulsification step. The double emulsion with the highest encapsulation efficiency (>80%) was prepared by: (i) using 40% (w/w) soy peptide solution as W1 phase; (ii) controlling W1:O ratio at 3:7 (w/w) and (iii) homogenizing the emulsion at 10,000 rpm for 3 min. The freeze-dried microcapsule powder of W1/O/W2 emulsion showed higher encapsulation efficiency (>70%) compared to spray-dried one. The freeze-dried microcapsule of W1/O/W2 double emulsion developed in this study is a promising delivery matrix to encapsulate hydrophilic ingredients including peptides. Fourier-transform infrared spectroscopy (FTIR) spectra of the microcapsule powder indicated good compatibility between peptide and encapsulants.
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Physicochemical characteristics and in vitro permeation of loratadine solid lipid nanoparticles for transdermal delivery. Ther Deliv 2020; 11:685-700. [PMID: 33225838 DOI: 10.4155/tde-2020-0075] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Aim: To prepare loratadine-loaded solid lipid nanoparticles (SLNs) using a modified two-step ultrasound-assisted phase inversion temperature (PIT) process. Results/methodology: Loratadine was dissolved in beeswax and Tween 80 was dissolved in water. The two phases were mixed together to prepare a water-in-oil emulsion preconcentrate (w/o) at a PIT of 85°C, followed by gradual water addition at 25°C to trigger nanoparticles formation (o/w). Kinetic stability was investigated. No change in the size was observed within 6 months. Fourier-transform infrared spectroscopy demonstrated stability of the emulsions via molecular structure of water at the interface of the o/w nanoemulsions. SLNs enhanced the in vitro skin permeation of loratadine. Conclusion: Stable SLNs were successfully prepared by ultrasound-assisted PIT.
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Colucci G, Santamaria-Echart A, Silva SC, Fernandes IPM, Sipoli CC, Barreiro MF. Development of Water-in-Oil Emulsions as Delivery Vehicles and Testing with a Natural Antimicrobial Extract. Molecules 2020; 25:E2105. [PMID: 32365923 PMCID: PMC7248747 DOI: 10.3390/molecules25092105] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 04/24/2020] [Accepted: 04/29/2020] [Indexed: 12/04/2022] Open
Abstract
Water-in-oil (W/O) emulsions have high potential for several industrial areas as delivery systems of hydrophilic compounds. In general, they are less studied than oil-in-water (O/W) systems, namely in what concerns the so-called fluid systems, partly due to problems of instability. In this context, this work aimed to produce stable W/O emulsions from a natural oil, sweet almond oil, to be further tested as vehicles of natural hydrophilic extracts, here exemplified with an aqueous cinnamon extract. Firstly, a base W/O emulsion using a high-water content (40/60, v/v) was developed by testing different mixtures of emulsifiers, namely Tween 80 combined with Span 80 or Span 85 at different contents. Among the tested systems, the one using a 54/46 (v/v) Span 80/Tween 80 mixture, and subjected to 12 high-pressure homogenizer (HPH) cycles, revealed to be stable up to 6 months, being chosen for the subsequent functionalization tests with cinnamon extract (1.25-5%; w/v; water-basis). The presence of cinnamon extract leaded to changes in the microstructure as well as in the stability. The antimicrobial and antioxidant analysis were evidenced, and a sustained behavior compatible with an extract distribution within the two phases, oil and water, in particular for the higher extract concentration, was observed.
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Affiliation(s)
- Giovana Colucci
- Mountain Research Center (CIMO), Polytechnic Institute of Bragança, Santa Apolónia Campus, 5300-253 Bragança, Portugal; (G.C.); (A.S.-E.); (S.C.S.)
- Department of Chemical Engineering, Federal University of Technology (UTFPR)–Paraná, 86812-460 Apucarana, Brazil;
| | - Arantzazu Santamaria-Echart
- Mountain Research Center (CIMO), Polytechnic Institute of Bragança, Santa Apolónia Campus, 5300-253 Bragança, Portugal; (G.C.); (A.S.-E.); (S.C.S.)
| | - Samara C. Silva
- Mountain Research Center (CIMO), Polytechnic Institute of Bragança, Santa Apolónia Campus, 5300-253 Bragança, Portugal; (G.C.); (A.S.-E.); (S.C.S.)
- Laboratory of Separation and Reaction Engineering—Laboratory of Catalysis and Materials (LSRE/LCM) Department of Chemical Engineering, Faculty of Engineering University of Porto, Dr. Roberto Frias, S/N, 4200-465 Porto, Portugal
| | - Isabel P. M. Fernandes
- Mountain Research Center (CIMO), Polytechnic Institute of Bragança, Santa Apolónia Campus, 5300-253 Bragança, Portugal; (G.C.); (A.S.-E.); (S.C.S.)
| | - Caroline C. Sipoli
- Department of Chemical Engineering, Federal University of Technology (UTFPR)–Paraná, 86812-460 Apucarana, Brazil;
| | - Maria F. Barreiro
- Mountain Research Center (CIMO), Polytechnic Institute of Bragança, Santa Apolónia Campus, 5300-253 Bragança, Portugal; (G.C.); (A.S.-E.); (S.C.S.)
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Qureshi D, Behera H, Anis A, Kim D, Pal K. Effect of polyglycerol polyricinoleate on the polymorphic transitions and physicochemical properties of mango butter. Food Chem 2020; 323:126834. [PMID: 32334312 DOI: 10.1016/j.foodchem.2020.126834] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 03/25/2020] [Accepted: 04/14/2020] [Indexed: 11/25/2022]
Abstract
Emulsifiers act as Fat crystal modifiers and can modulate the crystallization process of fats. In this study, we have reported the effect of polyglycerol polyricinoleate (PGPR) on the physicochemical properties of an underutilized vegetable fat "mango butter" (MB). MB-PGPR based formulations were prepared by heat-cool method. Microscopic studies showed that PGPR resulted in the formation of globular MB crystals. XRD and thermal studies conjointly suggested that the MB crystals were predominantly crystallized as β-polymorph. However, PGPR induced imperfections within the MB crystals. FTIR spectroscopy revealed that PGPR considerably varied the local environment of the MB crystals. PGPR also altered the nucleation time and crystallization rate of the MB crystal formation. The MB formulation that contained 2.5% (w/w) PGPR was found to have good mechanical stability. In gist, the addition of PGPR (as a crystal modifier) can help us to influence the crystal behavior and physicochemical properties of the MB fat.
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Affiliation(s)
- Dilshad Qureshi
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela 769008, India
| | - Haladhar Behera
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela 769008, India
| | - Arfat Anis
- SABIC Polymer Research Center, Department of Chemical Engineering, King Saud University, Riyadh, Saudi Arabia
| | - Doman Kim
- Department of International Agricultural Technology & Institute of Green BioScience and Technology, Seoul National University, Gwangwon-do 25354, Republic of Korea.
| | - Kunal Pal
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela 769008, India.
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Dinache A, Tozar T, Smarandache A, Andrei IR, Nistorescu S, Nastasa V, Staicu A, Pascu ML, Romanitan MO. Spectroscopic Characterization of Emulsions Generated with a New Laser-Assisted Device. Molecules 2020; 25:molecules25071729. [PMID: 32283754 PMCID: PMC7180494 DOI: 10.3390/molecules25071729] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 03/29/2020] [Accepted: 04/08/2020] [Indexed: 11/16/2022] Open
Abstract
This paper presents a spectroscopic study of emulsions generated with a laser-assisted device. Fourier transform infrared (FTIR), Raman and UV–Vis–NIR reflectance spectra of emulsions, recorded before and after exposure to laser radiation were used to characterize the effect of laser irradiation. The paper also presents a comparison between the calculated IR spectra and the experimental FTIR spectra of an emulsion’s components. FTIR measurements allowed the identification of absorption bands specific to each of the emulsions’ components. Moreover, it enabled the observation of destabilization of the emulsion in real-time. Raman spectroscopy allowed the observation of the modifications at a molecular level, by identifying the vibrations of the representative functional groups and the polymerization of sodium tetradecyl sulfate (STS) molecules by analyzing the evolution of the carbonyl band. UV–Vis–NIR reflectance spectra of emulsions before and after exposure to laser radiation showed that the physical characteristics of the emulsions changed during irradiation—the dimensions of the droplets decreased, leading to an emulsion with a better time stability. These results proved that the employed spectroscopy techniques were powerful tools in emulsion analysis.
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Affiliation(s)
- Andra Dinache
- National Institute for Laser, Plasma and Radiation Physics, 077125 Magurele, Ilfov, Romania; (T.T.); (A.S.); (I.R.A.); (S.N.); (V.N.); (A.S.); (M.-L.P.)
- Correspondence: ; Tel.: +40-214575739
| | - Tatiana Tozar
- National Institute for Laser, Plasma and Radiation Physics, 077125 Magurele, Ilfov, Romania; (T.T.); (A.S.); (I.R.A.); (S.N.); (V.N.); (A.S.); (M.-L.P.)
| | - Adriana Smarandache
- National Institute for Laser, Plasma and Radiation Physics, 077125 Magurele, Ilfov, Romania; (T.T.); (A.S.); (I.R.A.); (S.N.); (V.N.); (A.S.); (M.-L.P.)
| | - Ionut Relu Andrei
- National Institute for Laser, Plasma and Radiation Physics, 077125 Magurele, Ilfov, Romania; (T.T.); (A.S.); (I.R.A.); (S.N.); (V.N.); (A.S.); (M.-L.P.)
| | - Simona Nistorescu
- National Institute for Laser, Plasma and Radiation Physics, 077125 Magurele, Ilfov, Romania; (T.T.); (A.S.); (I.R.A.); (S.N.); (V.N.); (A.S.); (M.-L.P.)
| | - Viorel Nastasa
- National Institute for Laser, Plasma and Radiation Physics, 077125 Magurele, Ilfov, Romania; (T.T.); (A.S.); (I.R.A.); (S.N.); (V.N.); (A.S.); (M.-L.P.)
- Extreme Light Infrastructure-Nuclear Physics ELI-NP, “Horia Hulubei” National Institute for Physics and Nuclear Engineering IFIN-HH, 077125 Bucharest-Magurele, Romania
| | - Angela Staicu
- National Institute for Laser, Plasma and Radiation Physics, 077125 Magurele, Ilfov, Romania; (T.T.); (A.S.); (I.R.A.); (S.N.); (V.N.); (A.S.); (M.-L.P.)
| | - Mihail-Lucian Pascu
- National Institute for Laser, Plasma and Radiation Physics, 077125 Magurele, Ilfov, Romania; (T.T.); (A.S.); (I.R.A.); (S.N.); (V.N.); (A.S.); (M.-L.P.)
- Physics Faculty, University of Bucharest, 077125 Magurele, Ilfov, Romania
| | - Mihaela Oana Romanitan
- Department of Emergency Internal Medicine and Neurology, Karolinska Institute Stroke Research Network at Södersjukhuset, Stockholm South General Hospital, 118 83 Stockholm, Sweden;
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Lou L, Kendall RJ, Smith E, Ramkumar SS. Functional PVDF/rGO/TiO2 nanofiber webs for the removal of oil from water. POLYMER 2020. [DOI: 10.1016/j.polymer.2019.122028] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Kiefer J, Seidel B, Meyer D. Optical Spectroscopy for Analysis and Monitoring of Metalworking Fluids. APPLIED SPECTROSCOPY 2018; 72:1790-1797. [PMID: 29972317 DOI: 10.1177/0003702818789700] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
For various industrial manufacturing processes, water-based metalworking fluids (MWFs) are of high relevance due to their cooling and lubricating ability. They commonly form oil-in-water emulsions or solutions and hence their composition and stability is crucial for their performance in the metalworking process. To ensure a long service life of the MWF, intense monitoring is obligatory. However, examination techniques which display comprehensive and precise information about the actual state of the cooling lubricant in use are currently not available. The present study aims at testing the suitability of spectroscopic methods in terms of Fourier transform infrared, Raman, and laser-induced fluorescence spectroscopy for analyzing and monitoring MWFs. It is shown that all three techniques are capable of determining the initial composition, i.e., the ratio of water and concentrate. Fourier transform infrared provides the best performance regarding monitoring the state of the fluid over an extended period of time. The spectral signatures show distinct changes during a five-month service life in a technical environment.
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Affiliation(s)
- Johannes Kiefer
- Technische Thermodynamik, Universität Bremen, Germany
- School of Engineering, University of Aberdeen, UK
- Erlangen Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
- MAPEX Center for Materials and Processes, Universität Bremen, Germany
| | - Benedikt Seidel
- MAPEX Center for Materials and Processes, Universität Bremen, Germany
- Leibniz Institute for Materials Engineering IWT, Bremen, Germany
| | - Daniel Meyer
- MAPEX Center for Materials and Processes, Universität Bremen, Germany
- Leibniz Institute for Materials Engineering IWT, Bremen, Germany
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Panja SK, Haddad B, Kiefer J. Clusters of the Ionic Liquid 1-Hydroxyethyl-3-methylimidazolium Picrate: From Theoretical Prediction in the Gas Phase to Experimental Evidence in the Solid State. Chemphyschem 2018; 19:3061-3068. [DOI: 10.1002/cphc.201800684] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Indexed: 01/08/2023]
Affiliation(s)
- Sumit K. Panja
- Department of Inorganic and Physical Chemistry; Indian Institute of Science; Bangalore 560012 Karnataka India
| | - Boumediene Haddad
- Department of Chemistry; Dr Moulay Tahar University; Saïda EN-NASR, BP:138 Algeria
| | - Johannes Kiefer
- Technische Thermodynamik; Universität Bremen; Badgasteiner Str. 1 28359 Bremen Germany
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Kiefer J, Bartels J, Kroll S, Rezwan K. Vibrational Spectroscopy as a Promising Toolbox for Analyzing Functionalized Ceramic Membranes. APPLIED SPECTROSCOPY 2018; 72:947-955. [PMID: 29667431 DOI: 10.1177/0003702818769479] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Ceramic materials find use in many fields including the life sciences and environmental engineering. For example, ceramic membranes have shown to be promising filters for water treatment and virus retention. The analysis of such materials, however, remains challenging. In the present study, the potential of three vibrational spectroscopic methods for characterizing functionalized ceramic membranes for water treatment is evaluated. For this purpose, Raman scattering, infrared (IR) absorption, and solvent infrared spectroscopy (SIRS) were employed. The data were analyzed with respect to spectral changes as well as using principal component analysis (PCA). The Raman spectra allow an unambiguous discrimination of the sample types. The IR spectra do not change systematically with functionalization state of the material. Solvent infrared spectroscopy allows a systematic distinction and enables studying the molecular interactions between the membrane surface and the solvent.
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Affiliation(s)
- Johannes Kiefer
- 1 Technische Thermodynamik, University of Bremen, Bremen, Germany
- 2 Center for Materials and Processes (MAPEX), University of Bremen, Bremen, Germany
- 3 School of Engineering, University of Aberdeen, Aberdeen, UK
| | - Julia Bartels
- 4 Advanced Ceramics, University of Bremen, Bremen, Germany
| | - Stephen Kroll
- 2 Center for Materials and Processes (MAPEX), University of Bremen, Bremen, Germany
- 5 IfBB-Institute for Bioplastics and Biocomposites, Hochschule Hannover- University of Applied Sciences and Arts, Hannover, Germany
| | - Kurosch Rezwan
- 2 Center for Materials and Processes (MAPEX), University of Bremen, Bremen, Germany
- 4 Advanced Ceramics, University of Bremen, Bremen, Germany
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Wenning C, Noe J, Barbe S, Leimenstoll MC. Evidence of Liquid-Liquid Demixing During Bi-Soft Segment Polyurethane Prepolymerization. Macromol Res 2018. [DOI: 10.1007/s13233-018-6065-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Serra PB, Rocha MA, Rathke B, Růžička K, Fulem M, Kiefer J. Infrared spectroscopy of the symmetric branched isomers of n-heptanol. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.09.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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