151
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Ardila JA, de Alvarenga Junior BR, Durango LC, Soares FLF, Perlatti B, de Oliveira Cardoso J, Oliveira RV, Forim MR, Carneiro RL. Design of experiments applied to stress testing of pharmaceutical products: A case study of Albendazole. Eur J Pharm Sci 2021; 165:105939. [PMID: 34284097 DOI: 10.1016/j.ejps.2021.105939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 05/28/2021] [Accepted: 06/28/2021] [Indexed: 10/20/2022]
Abstract
Forced degradation tests are studies used to assess the stability of active pharmaceutical ingredients (APIs) and their formulations. These tests are performed submitting the API under extreme conditions in order to know the main degradation products in a short period of time. The results of these studies are used to assess the degradation susceptibility of APIs and to validate chromatographic analytical methods. However, most of degradation studies are performed using one-factor-at-the-time (OFAT) which does not consider the interactions between degradation variables. This work proposes the use of Design of Experiment (DoE) approach in forced degradation of albendazole (ABZ). It was used a central composite design (CCD) to evaluate the forced degradation in a multivariate way. Experiments were performed taking into account the variables pH, temperature, oxidizing agent (H2O2) and UV radiation. It was verified the influence of the variables and their interactions on the ABZ degradation. The ABZ oxidation showed to be the main degradation route for ABZ, which is strongly influenced by the temperature. The hydrolysis was relevant at alkaline medium and high temperature. LC-IT-MSn was used to identify the degradation products. It was found three known degradation products (albendazole-2-amino, albendazole sulfoxide and albendazole sulfone) and a new derivate of albendazole molecule (albendazole sulfoxide with a chlorine). This last one was isolated and characterized by UPLC-QToF-MS and NMR analyses.
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Affiliation(s)
- Jorge Armando Ardila
- Department of Chemistry, Federal University of São Carlos, 13565-905, São Carlos, São Paulo, Brazil
| | | | - Luis Cuadrado Durango
- Department of Chemistry, Federal University of São Carlos, 13565-905, São Carlos, São Paulo, Brazil
| | | | - Bruno Perlatti
- Department of Chemistry and Biochemistry, University of California, 90095, Los Angeles, California, USA
| | | | - Regina Vincenzi Oliveira
- Department of Chemistry, Federal University of São Carlos, 13565-905, São Carlos, São Paulo, Brazil
| | - Moacir Rossi Forim
- Department of Chemistry, Federal University of São Carlos, 13565-905, São Carlos, São Paulo, Brazil
| | - Renato Lajarim Carneiro
- Department of Chemistry, Federal University of São Carlos, 13565-905, São Carlos, São Paulo, Brazil.
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152
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Bahia PVB, Nascimento MM, Hatje V, de Andrade JB, Machado ME. Microscale extraction combined with gas chromatography/mass spectrometry for the simultaneous determination of polycyclic aromatic hydrocarbons and polycyclic aromatic sulfur heterocycles in marine sediments. J Chromatogr A 2021; 1653:462414. [PMID: 34320434 DOI: 10.1016/j.chroma.2021.462414] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 06/15/2021] [Accepted: 07/06/2021] [Indexed: 10/20/2022]
Abstract
This paper describes a novel method based on an ultrasound-assisted extraction microscale device (UAE-MSD) for the rapid and simultaneous determination of polycyclic aromatic hydrocarbons (PAH) and polycyclic aromatic sulfur heterocycles (PASH) in marine sediments. Solvent extraction conditions were optimized by applying a simplex-centroid mixture design. Optimum conditions were used to validate and determine the concentrations of 17 PAH and 7 PASH. The best conditions were obtained by extracting sediments with 500 µL of DCM:MeOH (65:35, v:v) over 23 min of sonication. Analytes were determined by gas chromatography/mass spectrometry in selective ion monitoring (GC-MS/SIM). Matrix effects were evaluated, and matrix-matched calibration was used for quantitation. Analytical method validation was carried out using the certified reference material NIST SRM 1941b, as well as sediment spiked with PASH at three concentration levels. Recoveries ranged between 70.0 ± 3.5% and 119 ± 9.1% for PAH and 80.6 ± 10.4% and 120 ± 10% for PASH. Linearity (R2) was ≥0.99 for all compounds. Method detection limits ranged from 8.8 to 30.2 ng g-1, while limits of quantification ranged from 29.4 to 1011 ng g-1. UAE-MSD was applied to marine sediments exposed to different anthropogenic impacts collected in Todos os Santos Bay, Brazil. PAH concentrations ranged from <LOQ to 667 ng g-1, while PASH levels were <LOQ to 1152 ng g-1. Dibenzothiophene was the compound presented in the highest concentration in all samples, with values up to 249 ng g-1. The results indicated contributions of pyrogenic sources from all compounds. The developed method can potentially be applied to extract trace levels of compounds in different solid matrices to minimize extraction time and solvent consumption.
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Affiliation(s)
- Pedro Victor Bomfim Bahia
- Instituto de Química, Universidade Federal da Bahia, Salvador, BA 40170-115, Brazil; Centro Interdisciplinar de Energia e Ambiente - CIEnAm, Universidade Federal da Bahia, Salvador, BA 40170-115, Brazil
| | - Madson Moreira Nascimento
- Instituto de Química, Universidade Federal da Bahia, Salvador, BA 40170-115, Brazil; Centro Interdisciplinar de Energia e Ambiente - CIEnAm, Universidade Federal da Bahia, Salvador, BA 40170-115, Brazil
| | - Vanessa Hatje
- Instituto de Química, Universidade Federal da Bahia, Salvador, BA 40170-115, Brazil; Centro Interdisciplinar de Energia e Ambiente - CIEnAm, Universidade Federal da Bahia, Salvador, BA 40170-115, Brazil
| | - Jailson Bittencourt de Andrade
- Centro Interdisciplinar de Energia e Ambiente - CIEnAm, Universidade Federal da Bahia, Salvador, BA 40170-115, Brazil; Centro Universitário SENAI-CIMATEC, Av. Orlando Gomes, 1845 - Piatã, Salvador, BA 41650-010, Brazil
| | - Maria Elisabete Machado
- Instituto de Química, Universidade Federal da Bahia, Salvador, BA 40170-115, Brazil; Centro Interdisciplinar de Energia e Ambiente - CIEnAm, Universidade Federal da Bahia, Salvador, BA 40170-115, Brazil.
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153
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Foschi M, Capasso P, Maggi MA, Ruggieri F, Fioravanti G. Experimental Design and Response Surface Methodology Applied to Graphene Oxide Reduction for Adsorption of Triazine Herbicides. ACS OMEGA 2021; 6:16943-16954. [PMID: 34250353 PMCID: PMC8264846 DOI: 10.1021/acsomega.1c01877] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 06/01/2021] [Indexed: 05/30/2023]
Abstract
In this work, pristine graphene oxide and its thermally reduced derivatives, rGO, were tested for the removal of triazines (atraton, prometryn, and atrazine) from water. The reduction process was optimized by means of design of experiments (DOE) coupled with response surface methodology (RSM), relying on the adsorption efficiency of the material. The optimal reduction conditions were calculated at a temperature of 110 °C maintained for 24 h; the mildest and simplest reduction protocol was chosen, as it allows in-air heat treatment with a common laboratory oven. The rGO samples were characterized before use, confirming a partial reduction process that, leaving intact most of the oxygenated functionalities on the graphene skeleton, may still allow favorable adsorption of pollutants through both hydrogen bonds and π-π interactions, which result from a large conjugated polyaromatic system. Triazine analyses were performed by high-performance liquid chromatography (HPLC); the data obtained from the adsorption isotherms were fitted with the Langmuir and Freundlich models, highlighting a slightly different adsorption behavior of atraton and prometryn compared with atrazine. Model outcomes were also used to support the hypotheses about the adsorption process.
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Affiliation(s)
- Martina Foschi
- Department
of Physical and Chemical Sciences, University
of L’Aquila, Via Vetoio, Coppito, L’Aquila (AQ) 67100, Italy
| | - Paola Capasso
- Department
of Physical and Chemical Sciences, University
of L’Aquila, Via Vetoio, Coppito, L’Aquila (AQ) 67100, Italy
| | - Maria Anna Maggi
- Hortus
Novus srl, Via Campo
Sportivo, Canistro, L’Aquila (AQ) 67050, Italy
| | - Fabrizio Ruggieri
- Department
of Physical and Chemical Sciences, University
of L’Aquila, Via Vetoio, Coppito, L’Aquila (AQ) 67100, Italy
| | - Giulia Fioravanti
- Department
of Physical and Chemical Sciences, University
of L’Aquila, Via Vetoio, Coppito, L’Aquila (AQ) 67100, Italy
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154
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Abrile MG, Fiasconaro ML, Orecchia DS, Manzo RM, Lovato ME. Utilization of sludge derived from landfill leachate treatment as a source of nutrients for the growth of Nicotiana alata L. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 289:112488. [PMID: 33813303 DOI: 10.1016/j.jenvman.2021.112488] [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: 11/10/2020] [Revised: 03/22/2021] [Accepted: 03/24/2021] [Indexed: 06/12/2023]
Abstract
The sludges derived from the leachate treatment (LS) represent an important environmental and operational problem in the landfill management. On the other hand, they can be utilized as an alternative source of nutrients and organic matter. The main objective of this work was to evaluate the reuse of the LS of a sanitary landfill in Santa Fe city - Argentina, as an organic amendment for the development of Nicotiana alata L. plants. Different doses of LS were applied to a soil mixture for potted seedling growth. The response surface methodology was applied, using a one-factor design. Once the phenological stage of flowering began, the plants were harvested. Physiological and biochemical determinations were made in order to evaluate the effects of the different amendments. Application of LS notably improved growth parameters such as stem height, leaf area and dry matter. Additionally, the content of proteins and photosynthetic pigments was enhanced. Through the multiple regression statistical analyses, the relationship between the response variables and the sludge content was established. The multivariate optimization analysis yielded 53% as the optimal sludge content. Our results indicate that this sludge, in appropriate doses, can be used as an organic amendment for the revegetation of sanitary landfills.
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Affiliation(s)
- Mariana Guadalupe Abrile
- Instituto de Desarrollo Tecnológico para la Industria Química, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional del Litoral, Colectora Ruta Nacional, Nº 168 km. 0 (Paraje El Pozo), Santa Fe, Argentina.
| | - María Laura Fiasconaro
- Instituto de Desarrollo Tecnológico para la Industria Química, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional del Litoral, Colectora Ruta Nacional, Nº 168 km. 0 (Paraje El Pozo), Santa Fe, Argentina
| | - Daiana Soledad Orecchia
- Instituto de Desarrollo Tecnológico para la Industria Química, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional del Litoral, Colectora Ruta Nacional, Nº 168 km. 0 (Paraje El Pozo), Santa Fe, Argentina
| | - Ricardo Martín Manzo
- Instituto de Desarrollo Tecnológico para la Industria Química, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional del Litoral, Colectora Ruta Nacional, Nº 168 km. 0 (Paraje El Pozo), Santa Fe, Argentina
| | - María Eugenia Lovato
- Instituto de Desarrollo Tecnológico para la Industria Química, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional del Litoral, Colectora Ruta Nacional, Nº 168 km. 0 (Paraje El Pozo), Santa Fe, Argentina
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155
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Fernández MF, Mustieles V, Suárez B, Reina-Pérez I, Olivas-Martinez A, Vela-Soria F. Determination of bisphenols, parabens, and benzophenones in placenta by dispersive liquid-liquid microextraction and gas chromatography-tandem mass spectrometry. CHEMOSPHERE 2021; 274:129707. [PMID: 33545592 DOI: 10.1016/j.chemosphere.2021.129707] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Revised: 01/11/2021] [Accepted: 01/17/2021] [Indexed: 05/05/2023]
Abstract
Human exposure to endocrine disrupting chemicals (EDCs) is of particular concern during development. Bisphenols, parabens, and benzophenones are EDCs widely used in the manufacture of numerous goods, personal care products, and cosmetics. The aim of this study was to develop a new and practical method for determining three bisphenols, four parabens, and five benzophenones in placenta samples. It uses dispersive liquid-liquid microextraction (DLLME) in combination with gas chromatography-tandem mass spectrometry (GC-MS/MS). Several chemometric approaches were employed to optimize the experimental parameters. Limits of detection ranged from 0.04 to 0.08 ng g-1 and inter-day variabilities (evaluated as relative standard deviation) from 4.2% to 13.4%. The method was validated using matrix-matched standard calibration followed by a recovery assay with spiked samples. Recovery percentages ranged from 87.1% to 113.2%. Finally, the method was used to measure target compounds in 20 placental tissue samples from voluntary donors. This analytical procedure can provide information on the exposure of the fetus to non-persistent EDCs.
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Affiliation(s)
- M F Fernández
- Instituto de Investigación Biosanitaria (ibs.GRANADA), Spain; CIBER en Epidemiología y Salud Pública (CIBERESP), Spain; Centro de Investigación Biomédica (CIBM), Universidad de Granada, Granada, Spain; Departamento de Radiología y Medicina Física, Universidad de Granada, Granada, Spain
| | - V Mustieles
- Instituto de Investigación Biosanitaria (ibs.GRANADA), Spain; CIBER en Epidemiología y Salud Pública (CIBERESP), Spain; Centro de Investigación Biomédica (CIBM), Universidad de Granada, Granada, Spain; Departamento de Radiología y Medicina Física, Universidad de Granada, Granada, Spain
| | - B Suárez
- Instituto de Investigación Biosanitaria (ibs.GRANADA), Spain; CIBER en Epidemiología y Salud Pública (CIBERESP), Spain
| | - I Reina-Pérez
- Centro de Investigación Biomédica (CIBM), Universidad de Granada, Granada, Spain; Departamento de Radiología y Medicina Física, Universidad de Granada, Granada, Spain
| | - A Olivas-Martinez
- Centro de Investigación Biomédica (CIBM), Universidad de Granada, Granada, Spain; Departamento de Radiología y Medicina Física, Universidad de Granada, Granada, Spain
| | - F Vela-Soria
- Instituto de Investigación Biosanitaria (ibs.GRANADA), Spain; Centro de Investigación Biomédica (CIBM), Universidad de Granada, Granada, Spain.
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156
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Abdallah IA, Hammad SF, Bedair A, Mansour FR. Sugaring-out induced homogeneous liquid-liquid microextraction as an alternative mode for biological sample preparation: A comparative study. J Sep Sci 2021; 44:3117-3125. [PMID: 34101992 DOI: 10.1002/jssc.202100255] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 06/03/2021] [Accepted: 06/04/2021] [Indexed: 02/06/2023]
Abstract
Miniaturization of liquid-liquid extraction is a growing field of sample preparation to reduce solvent consumption, protect the environment, and preserve operators' health. In this work, four different modes of liquid-liquid microextraction have been compared including dispersive liquid-liquid microextraction, binary and ternary salting-out, and sugaring-out induced liquid-liquid microextraction. The extraction efficiency was evaluated by the enrichment factors of 14 different drugs from three pharmacological classes. Compared with the other modes, sugaring-out induced liquid-liquid microextraction was found to be the most efficient and, thus, it was applied for sample preparation of the antivirals in human plasma. Method optimization was performed using response surface methodology for the sugar type and amount (in mg), the sample pH, the equilibration time (in min), and the extractant volume (in µL). The method was then validated and found linear in the concentration range of 0.10-10 µg/mL for daclatasvir, 0.05-10 µg/mL for velpatasvir, and 0.20-10 µg/mL for ledipasvir, with correlation coefficients in the range 0.996-0.999. These results shows that sugaring-out induced liquid-liquid microextraction could be a more efficient microextraction mode for preparation of biological samples. Compared with other types of microextraction, sugaring-out induced liquid-liquid microextraction is greener, simpler, and cost-effective, with less tendency to affect the sample pH.
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Affiliation(s)
- Inas A Abdallah
- Department of Analytical Chemistry, Faculty of Pharmacy, University of Sadat City, Sadat City, Egypt
| | - Sherin F Hammad
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Tanta University, Tanta, Egypt
| | - Alaa Bedair
- Department of Analytical Chemistry, Faculty of Pharmacy, University of Sadat City, Sadat City, Egypt
| | - Fotouh R Mansour
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Tanta University, Tanta, Egypt
- Pharmaceutical Services Center, Faculty of Pharmacy, Tanta University, Tanta, Egypt
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157
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Vyviurska O, Hanobiková M, Gomes AA, Špánik I. Multivariate optimization of dual-sorbent dynamic headspace extraction of volatiles in wine analysis. Food Chem 2021; 365:130449. [PMID: 34218105 DOI: 10.1016/j.foodchem.2021.130449] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 05/20/2021] [Accepted: 06/21/2021] [Indexed: 10/21/2022]
Abstract
The main critical point of newly developed miniaturized sample preparation techniques is a limited extraction capacity. Dynamic headspace extraction offers increased volume of sorbent which is commonly used in environmental analysis. Application of two sorbents (Carbopack B/Carbopack X and Tenax® TA) at different extraction temperatures allows enhancing a range of volatile organic compounds available for analysis. Such approach was applied in our research for quantification of volatile organic compounds in botrytized wines with gas chromatography. The central composite design was included to analysis simultaneous effects of incubation time, incubation temperature, purge volume and purge flow. In attempt to properly assess results, the data evaluation involved Pareto charts, surface response methodology and principal component analysis. Multivariate experimental design revealed statistical significance of purge volume and quadratic terms of incubation time and temperature, for response of volatiles. The quantification method with 0.2-2.0 µg/L LOD and 0.5-5.0 µg/L LOQ values, was developed under simultaneously optimized experimental conditions such as a 54 °C incubation temperature, a 20.18 min incubation time, a 344.3 mL purge volume and a 16.0 mL/min purge flow. The increased levels of linalool oxide, ethyl phenylacetate, γ-hexalactone and α-terpineol were observed in the samples, that correlated with botrytized wine technology.
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Affiliation(s)
- Olga Vyviurska
- Slovak University of Technology in Bratislava, Faculty of Chemical and Food Technology, Institute of Analytical Chemistry, 81237 Bratislava, Slovak Republic.
| | - Mária Hanobiková
- Slovak University of Technology in Bratislava, Faculty of Chemical and Food Technology, Institute of Analytical Chemistry, 81237 Bratislava, Slovak Republic
| | - Adriano A Gomes
- Slovak University of Technology in Bratislava, Faculty of Chemical and Food Technology, Institute of Analytical Chemistry, 81237 Bratislava, Slovak Republic; Institute of Chemistry, Federal University of Rio Grande do Sul, Bento Gonçalves Avenue, 9500, 91501-970 Porto Alegre, RS, Brazil
| | - Ivan Špánik
- Slovak University of Technology in Bratislava, Faculty of Chemical and Food Technology, Institute of Analytical Chemistry, 81237 Bratislava, Slovak Republic.
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158
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Cerqueira UMFM, Bezerra MA, Ferreira SLC, de Jesus Araújo R, da Silva BN, Novaes CG. Doehlert design in the optimization of procedures aiming food analysis - A review. Food Chem 2021; 364:130429. [PMID: 34284258 DOI: 10.1016/j.foodchem.2021.130429] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 03/15/2021] [Accepted: 04/11/2021] [Indexed: 10/21/2022]
Abstract
In the present paper is presented a review on the application of Doehlert design in the optimization of some of the steps of analytical procedures aimed the analysis of food samples. The theoretical principles and the main characteristics of this type of design are described. In addition, the main advantages and limitations of Doehlert design over other designs (Central Composite Design and Box-Behnken) and its application in the area of food analysis are discussed. Finally, to illustrate its potential, some examples of Doehlert design application in other areas of food chemistry without the purpose of analytical determination will be briefly presented.
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Affiliation(s)
| | - Marcos Almeida Bezerra
- Universidade Federal da Bahia, Instituto de Química, Campus da Federação/Ondina, Rua Barão de Geremoabo s/n, 40.170-115 Salvador, Bahia, Brazil; Universidade Estadual do Sudoeste da Bahia, Campus de Jequié, Departamento de Ciências e Tecnologias, Rua José Moreira Sobrinho s/n, 45.206-190 Jequié, Bahia, Brazil.
| | - Sérgio Luís Costa Ferreira
- Universidade Federal da Bahia, Instituto de Química, Campus da Federação/Ondina, Rua Barão de Geremoabo s/n, 40.170-115 Salvador, Bahia, Brazil
| | - Rodrigo de Jesus Araújo
- Universidade Federal da Bahia, Instituto de Química, Campus da Federação/Ondina, Rua Barão de Geremoabo s/n, 40.170-115 Salvador, Bahia, Brazil
| | - Bruno Novaes da Silva
- Universidade Estadual do Sudoeste da Bahia, Campus de Jequié, Departamento de Ciências e Tecnologias, Rua José Moreira Sobrinho s/n, 45.206-190 Jequié, Bahia, Brazil
| | - Cleber Galvão Novaes
- Universidade Estadual do Sudoeste da Bahia, Campus de Jequié, Departamento de Ciências e Tecnologias, Rua José Moreira Sobrinho s/n, 45.206-190 Jequié, Bahia, Brazil
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159
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Multivariate optimization of a goat meat alkaline solubilization procedure using tetramethylammonium hydroxide for metals determination using FAAS. Food Chem 2021; 362:130176. [PMID: 34111692 DOI: 10.1016/j.foodchem.2021.130176] [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: 01/27/2021] [Revised: 05/19/2021] [Accepted: 05/20/2021] [Indexed: 11/23/2022]
Abstract
In the present work, multivariate designs were used to optimize an alkaline dissolution, assisted by ultrasound energy, procedure of goat meat using tetramethylammonium hydroxide (TMAH) aiming to determine Ca, Cu, Fe, K, Mg, Na and Zn by flame atomic absorption (FAAS) and emission (FAES) spectrometry. The optimal conditions found for the dissolution were in the following ranges: 0.4-0.5 g for the sample mass, 12-15 min of sonication and using 700-1000 µL of 25% TMAH at a temperature of 50 °C. The obtained limits of quantification varied between 0.221 (Mg) and 7.60 (Ca) μg g-1. Accuracy was assessed by comparing the results obtained by applying the proposed method with the digestion in an acid medium using a digesting block and by analyzing bovine liver certified reference material. The application of a t-test revealed that, at a 95% confidence level, there were no significant differences between the values obtained.
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160
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Di Donato F, Biancolillo A, Mazzulli D, Rossi L, D'Archivio AA. HS-SPME/GC–MS volatile fraction determination and chemometrics for the discrimination of typical Italian Pecorino cheeses. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106133] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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161
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Eco-friendly chiral HPLC method for determination of alfuzosin enantiomers and solifenacin in their newly pharmaceutical combination: Method optimization via central composite design. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106095] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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162
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Colossolactone-G synergizes the anticancer properties of 5-fluorouracil and gemcitabine against colorectal cancer cells. Biomed Pharmacother 2021; 140:111730. [PMID: 34062410 DOI: 10.1016/j.biopha.2021.111730] [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: 04/18/2021] [Revised: 05/07/2021] [Accepted: 05/11/2021] [Indexed: 12/22/2022] Open
Abstract
Several terpenoids were isolated from Ganoderma colossum with potential chemotherapeutic properties against different solid tumor cells. Herein, we further assessed the potential chemomodulatory effects of colossolactone-G to gemcitabine (GCB) and 5-fluorouracil (5-FU) against colorectal cancer cells. Colossolactone-G induced moderate cell killing effects against both HT-29 and HCT-116 cells, with IC50's of 90.5 ± 1.7 µM and 22.3 ± 3.9 µM, respectively. Equitoxic combination demonstrated a synergistic effect between colossolactone-G and GCB, or 5-FU with combination indices ranging from 0.22 to 0.67. Both GCB and 5-FU induced moderate cell cycle arrest at G0/G1-phase and S-phase. Despite colossolactone-G's lack of influence on cell cycle distribution, it significantly potentiated GCB- and 5-FU-induced cell cycle arrest. Similarly, colossolactone-G treatment alone did not induce pronounced apoptosis in both cell lines. However, 5-FU and GCB induced significant apoptosis which was further potentiated via combination with colossolactone-G. Furthermore, colossolactone-G significantly increased autophagic cell death response in both HCT-116 and HT-29 cells and potentiated 5-FU- and GCB-induced autophagic cell death. The influence of colossolactone-G alone or in combination with GCB or 5-FU on the apoptosis and autophagy were confirmed by qPCR analysis for the expression of several key apoptosis and autophagy genes such as, TRAIL, TP53INP1, BNIP3, hp62, ATG5, ATG7, Lamp2A and the golden standard for autophagy (LC3-II). In conclusion, a synergistic effect in terms of anticancer properties was observed when colossolactone-G was combined with 5-FU and GCB, where it influenced both apoptosis and autophagic cell death mechanisms.
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163
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Optimization of the Endotoxin Removal Performance of Solid-Phase Conjugated S3E3 Antimicrobial Peptide Using Response Surface Methodology. Int J Pept Res Ther 2021. [DOI: 10.1007/s10989-021-10230-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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164
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Development of a novel method for the in-situ dechlorination of immovable iron elements: optimization of Cl - extraction yield through experimental design. Sci Rep 2021; 11:10789. [PMID: 34031454 PMCID: PMC8144618 DOI: 10.1038/s41598-021-90006-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 04/29/2021] [Indexed: 02/04/2023] Open
Abstract
The conservation of iron objects exposed to marine aerosol is threatened by the formation of akaganeite, a highly unstable Cl-bearing corrosion phase. As akaganeite formation is responsible of the exfoliation of the rust layer, chlorides trigger a cyclic alteration phenomenon that often ends with the total consumption of the iron core. To prevent this degradation process, movable iron elements (e.g. archaeometallurgical artefacts) are generally immersed in alkaline dechlorination baths. Aiming to transfer this successful method to the treatment of immovable iron objects, we propose the in-situ application of alkaline solutions through the use of highly absorbent wraps. As first step of this novel research line, the present work defines the best desalination solution to be used and optimizes its extraction yield. After literature review, a screening experimental design was performed to understand the single and synergic effects of common additives used for NaOH baths. Once the most effective variables were selected, an optimization design was carried out to determine the optimal conditions to be set during treatment. According to the experimental work here presented, the use of 0.7 M NaOH solutions applied at high temperatures (above 50 °C) is recommended. Indeed, these conditions enhance chloride extraction and iron leaching inhibition, while promoting corrosion stabilization.
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165
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Microwave-assisted extraction of Clausena anisata leaves and Vernonia cinerea whole plants to maximize nitrate content: optimization approach, antioxidant activity, and cytotoxicity. ADVANCES IN TRADITIONAL MEDICINE 2021. [DOI: 10.1007/s13596-021-00581-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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166
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Ma L, Zhao C, Chen J, Zheng J. Effects of Anaerobic Fermentation on Black Garlic Extract by Lactobacillus: Changes in Flavor and Functional Components. Front Nutr 2021; 8:645416. [PMID: 34095186 PMCID: PMC8175794 DOI: 10.3389/fnut.2021.645416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 04/06/2021] [Indexed: 11/13/2022] Open
Abstract
The purpose of this study is to investigate the potential application of probiotics in the development of novel functional foods based on black garlic. The single-factor analysis (extraction temperatures, solid-to-liquid ratios, and extraction times) and the response surface methodology were firstly used to optimize hot water extraction of soluble solids from black garlic. The optimal extraction conditions were temperature 99.96°C, solid-to-liquid ratio 1:4.38 g/ml, and extracting 2.72 h. The effects of Lactobacillus (Lactobacillus plantarum, Lactobacillus rhamnosus, and co-culture of them) fermentation on the physicochemical properties of black garlic extract broth were studied for the first time. Artificial and electronic sensory evaluations demonstrated that fermentation significantly influenced the sensory characteristics. The variations of metabolites in different broth samples (S1, unfermented; S2, 1-day fermentation by L. plantarum; S3, 2-day fermentation by L. rhamnosus; and S4, 1-day fermentation by co-cultured Lactobacillus) were further investigated by gas chromatography-mass spectrometry and liquid chromatography-mass spectrometry/mass spectrometry analysis. As a result, Lactobacillus fermentation significantly reduced the pH; increased the contents of the total acid, amino nitrogen, total polyphenol, and total flavonoid; and reduced the content of 5-hydroxymethylfurfural (a carcinogenic component) by 25.10-40.81% in the black garlic extract. The contents of several components with unpleasant baking flavors (e.g., furfural, 2-acetylfuran, and 5-methyl furfural) were reduced, whereas the contents of components with green grass, floral, and fruit aromas were increased. More importantly, the contents of several functional components including lactic acid, Gly-Pro-Glu, sorbose, and α-CEHC (3,4-dihydro-6-hydroxy-2,5,7,8-tetramethyl-2H-1-benzopyran-2-propanoic acid) were increased after Lactobacillus fermentation. The results demonstrated the potential of probiotic fermentation to improve the quality of black garlic. This work will provide an insight into the strategic design of novel black garlic products and facilitate the application of black garlic in functional foods.
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Affiliation(s)
- Li Ma
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Chengying Zhao
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jifeng Chen
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
| | - Jinkai Zheng
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, China
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167
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Kowalska G, Baj T, Kowalski R, Szymańska J. Optimization of Glycerol-Water Extraction of Selected Bioactive Compounds from Peppermint and Common Nettle. Antioxidants (Basel) 2021; 10:817. [PMID: 34065576 PMCID: PMC8160696 DOI: 10.3390/antiox10050817] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 05/15/2021] [Accepted: 05/18/2021] [Indexed: 01/25/2023] Open
Abstract
Current trends in the industry indicate that extraction solvents should conform with the ideals of so-called "green chemistry". Therefore, the objective of the presented study was to optimize the conditions for the extraction of polyphenols, flavonoids and chlorophyll from peppermint leaves (Mentha × piperita L., Lamiaceae) and from common nettle leaves (Urtica dioica L., Urticaceae) via green chemistry. The obtained experimental results were subjected to modelling by means of the multiple regression method, while the optimization of the system was addressed via the application of the desirability function. As a result of the use of glycerol-water systems for the extraction of the tested active compounds from mint leaves and nettle leaves, extracts with higher concentrations of polyphenols, flavonoids and chlorophyll were most often obtained, when compared with the use of classical solvents such as water and ethanol. In this work, we demonstrate that the extraction temperature has significant influence on the concentration of the determined components in the extracts. To obtain the highest values of the analysed parameters, leaves of peppermint should be extracted with glycerol-water mixture at the proportions of 30.5:69.5 at a temperature of 50 °C, while the optimal conditions for the extraction of leaves of common nettle were the glycerol-water proportions of 12.5:87.5 and extraction temperature of 20 °C. Comparing the average percentage differences between the highest values of the analysed parameters obtained in the experiment and the approximated values for various temperatures with the level of desirability, one can note a high correlation that, in the analysed examples, amounted to 0.9681. The study showed that glycerol can be an alternative solvent in the extraction of polyphenols, flavonoids and chlorophyll, replacing, e.g., ethanol-which, for various reasons, cannot always be used.
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Affiliation(s)
- Grażyna Kowalska
- Department of Tourism and Recreation, University of Life Sciences in Lublin, 15 Akademicka Str., 20-950 Lublin, Poland;
| | - Tomasz Baj
- Department of Pharmacognosy, Medical University of Lublin, 1 Chodźki Str., 20-093 Lublin, Poland;
| | - Radosław Kowalski
- Department of Analysis and Food Quality Assessment, University of Life Sciences in Lublin, 8 Skromna Str., 20-704 Lublin, Poland
| | - Jolanta Szymańska
- Department of Integrated Paediatric Dentistry, Chair of Integrated Dentistry, Medical University of Lublin, 6 Chodźki Str., 20-093 Lublin, Poland;
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168
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On the Application of a Design of Experiments along with an ANFIS and a Desirability Function to Model Response Variables. Symmetry (Basel) 2021. [DOI: 10.3390/sym13050897] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
In manufacturing engineering, it is common to use both symmetrical and asymmetrical factorial designs along with regression techniques to model technological response variables, since the in-advance prediction of their behavior is of great importance to determine the levels of variation that lead to optimal response values to be obtained. For this purpose, regression techniques based on the response surface method combined with a desirability function for multi-objective optimization are commonly employed, since it is usual to find manufacturing processes that require simultaneous optimization of several variables, which exhibit in many cases an opposite behavior. However, these regression models are sometimes not accurate enough to predict the behavior of these response variables, especially when they have significant non-linearities. To deal with this drawback, soft computing techniques are very effective in overcoming the limitations of conventional regression models. This present study is focused on the employment of a symmetrical design of experiments along with a new desirability function, which is proposed in this study, and with soft computing techniques based on fuzzy logic. It will be shown that more accurate results than those obtained from regression techniques are obtained. Moreover, this new desirability function is analyzed in this study.
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169
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Loureiro DRP, Soares JX, Maia A, Silva AMN, Rangel M, Azevedo CMG, Hansen SV, Ulven T, Pinto MMM, Reis S, Afonso CMM. One‐Pot Synthesis of Xanthone by Carbonylative Suzuki Coupling Reaction. ChemistrySelect 2021. [DOI: 10.1002/slct.202101394] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Daniela R. P. Loureiro
- Department of Chemical Sciences Laboratory of Organic and Pharmaceutical Chemistry Faculty of Pharmacy University of Porto Rua de Jorge Viterbo Ferreira, 228 4050-313 Porto Portugal
- Interdisciplinary Center of Marine and Environmental Investigation (CIIMAR/CIMAR) Edifício do Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n 4050-208 Matosinhos Porto Portugal
- LAQV-REQUIMTE Department of Chemical Sciences Laboratory of Applied Chemistry Faculty of Pharmacy University of Porto Rua de Jorge Viterbo Ferreira, 228 4050-313 Porto Portugal
| | - José X. Soares
- LAQV-REQUIMTE Department of Chemical Sciences Laboratory of Applied Chemistry Faculty of Pharmacy University of Porto Rua de Jorge Viterbo Ferreira, 228 4050-313 Porto Portugal
| | - Ana Maia
- Department of Chemical Sciences Laboratory of Organic and Pharmaceutical Chemistry Faculty of Pharmacy University of Porto Rua de Jorge Viterbo Ferreira, 228 4050-313 Porto Portugal
| | - André M. N. Silva
- LAQV-REQUIMTE Department of Chemistry and Biochemistry Faculty of Sciences University of Porto Faculty of Sciences University of Porto Campo Alegre Street 4169-007 Porto Portugal
| | - Maria Rangel
- LAQV-REQUIMTE Instituto de Ciências Biomédicas Abel Salazar University of Porto José Viterbo Ferreira Street No. 228 4050-313 Porto Portugal
| | - Carlos M. G. Azevedo
- Department of Physics Chemistry and Pharmacy University of Southern Denmark Campusvej 55 5230 Odense M Denmark
| | - Steffen V. Hansen
- Department of Physics Chemistry and Pharmacy University of Southern Denmark Campusvej 55 5230 Odense M Denmark
| | - Trond Ulven
- Department of Drug Design and Pharmacology University of Copenhagen Universitetsparken 2 2100 Copenhagen Denmark
| | - Madalena M. M. Pinto
- Department of Chemical Sciences Laboratory of Organic and Pharmaceutical Chemistry Faculty of Pharmacy University of Porto Rua de Jorge Viterbo Ferreira, 228 4050-313 Porto Portugal
- Interdisciplinary Center of Marine and Environmental Investigation (CIIMAR/CIMAR) Edifício do Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n 4050-208 Matosinhos Porto Portugal
| | - Salette Reis
- LAQV-REQUIMTE Department of Chemical Sciences Laboratory of Applied Chemistry Faculty of Pharmacy University of Porto Rua de Jorge Viterbo Ferreira, 228 4050-313 Porto Portugal
| | - Carlos M. M. Afonso
- Department of Chemical Sciences Laboratory of Organic and Pharmaceutical Chemistry Faculty of Pharmacy University of Porto Rua de Jorge Viterbo Ferreira, 228 4050-313 Porto Portugal
- Interdisciplinary Center of Marine and Environmental Investigation (CIIMAR/CIMAR) Edifício do Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n 4050-208 Matosinhos Porto Portugal
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170
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Kasap S. Development of foamy-like 3-dimensional graphene networks decorated with iron oxide nanoparticles for strontium adsorption. SEP SCI TECHNOL 2021. [DOI: 10.1080/01496395.2020.1768121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Sibel Kasap
- Sabanci University, Nanotechnology Research and Application Center (SUNUM), Tuzla, İstanbul, Turkey
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171
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Abrile MG, Ciucio MM, Demarchi LM, Bono VM, Fiasconaro ML, Lovato ME. Degradation and mineralization of the emerging pharmaceutical pollutant sildenafil by ozone and UV radiation using response surface methodology. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:23868-23886. [PMID: 33219934 DOI: 10.1007/s11356-020-11717-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 11/16/2020] [Indexed: 06/11/2023]
Abstract
Pharmaceuticals and their degradation products which are present in wastewater and superficial waters are becoming an ecological issue. This research investigated the degradation and mineralization of synthetic solutions of the pharmaceutical compound sildenafil citrate (SC) by single ozonation and ozonation jointed with UV radiation (O3/UV). The effects of initial drug concentration (50-125 mg L-1), inlet ozone concentration (35-125 g Nm-3), and UV radiation on SC degradation and decrease of total organic carbon (TOC) were investigated using response surface methodology based on a central composite experimental design. Through the RSM analysis, it was possible to confirm the removal of SC for the entire experimental range. Major intermediates of SC degradation were identified and a degradation pathway was proposed. The kinetics of SC degradation was modeled as a pseudo-first-order reaction with a rate constant ranging between 0.072 and 1.250 min-1. The SC degradation and TOC removal were strongly enhanced by increasing the concentration of gaseous ozone at the inlet and incorporating UV radiation. The highest TOC removal reached at 60 min was 75%, in the O3/UV system, with initial SC content of 50 mg L-1 and inlet ozone concentration of 125 g Nm-3. The degradation rate of SC was increased 3 to 9 times in the presence of UV radiation. Ozone-based advanced oxidation processes appear as a suitable alternative for treatment of the emerging pollutant SC.
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Affiliation(s)
- Mariana Guadalupe Abrile
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), CCT CONICET Santa Fe, Ruta Nacional No. 168 Km 0. (3000), Santa Fe, Argentina
| | - María Michela Ciucio
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), CCT CONICET Santa Fe, Ruta Nacional No. 168 Km 0. (3000), Santa Fe, Argentina
| | - Lourdes Marlén Demarchi
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), CCT CONICET Santa Fe, Ruta Nacional No. 168 Km 0. (3000), Santa Fe, Argentina
| | - Virginia Mariel Bono
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), CCT CONICET Santa Fe, Ruta Nacional No. 168 Km 0. (3000), Santa Fe, Argentina
| | - María Laura Fiasconaro
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), CCT CONICET Santa Fe, Ruta Nacional No. 168 Km 0. (3000), Santa Fe, Argentina
| | - María Eugenia Lovato
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), CCT CONICET Santa Fe, Ruta Nacional No. 168 Km 0. (3000), Santa Fe, Argentina.
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172
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Cuadros-Rodríguez L, Jiménez-Carvelo AM, Fernández-Ramos M. Multivariate thinking for optical microfluidic analytical devices – A tutorial review. Microchem J 2021. [DOI: 10.1016/j.microc.2021.105959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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173
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Ozyurt VH, Çakaloğlu B, Otles S. Optimization of cold press and enzymatic‐assisted aqueous oil extraction from tomato seed by response surface methodology: Effect on quality characteristics. J FOOD PROCESS PRES 2021. [DOI: 10.1111/jfpp.15471] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Vasfiye Hazal Ozyurt
- Department of Food Engineering Faculty of Engineering Near East University Lefkosa Turkey
| | - Büşra Çakaloğlu
- Department of Food Engineering Faculty of Engineering Ege University Izmir Turkey
| | - Semih Otles
- Department of Food Engineering Faculty of Engineering Ege University Izmir Turkey
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174
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Aguilera ÁY, Krepper G, Di Nezio MS. Simple One-Step Synthesis of Bismuth Nanoparticles for Voltammetric Sensing of Metal Ions. J CLUST SCI 2021. [DOI: 10.1007/s10876-021-02068-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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175
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Domínguez JE, Kasiri A, González‐Benito J. Wettability behavior of solution blow spun polysulfone by controlling morphology. J Appl Polym Sci 2021. [DOI: 10.1002/app.50200] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- José E. Domínguez
- Departamento de investigación Universidad Tecnológica del Centro de Veracruz Veracruz Mexico
| | - Ali Kasiri
- Department of Materials Science and Engineering and Chemical Engineering Universidad Carlos III de Madrid Madrid Spain
| | - Javier González‐Benito
- Department of Materials Science and Engineering and Chemical Engineering, IQMAAB Universidad Carlos III de Madrid Madrid Spain
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176
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Rahman N, Varshney P. Facile Synthesis and Characterization of Zn(II)-Impregnated Chitosan/Graphene Oxide: Evaluation of Its Efficiency for Removal of Ciprofloxacin from Aqueous Solution. J Inorg Organomet Polym Mater 2021. [DOI: 10.1007/s10904-021-01981-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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177
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Gurrala S, Raj S, Cvs S, Anumolu PD. Quality-by-Design Approach for Chromatographic Analysis of Metformin, Empagliflozin and Linagliptin. J Chromatogr Sci 2021; 60:68-80. [PMID: 33822920 DOI: 10.1093/chromsci/bmab030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 11/18/2020] [Accepted: 02/23/2021] [Indexed: 11/14/2022]
Abstract
New analytical quality by design-oriented HPLC method with multiple response optimization (Derringer's desirability function) was demonstrated for simultaneous analysis of three antidiabetic drugs (metformin hydrochloride/empagliflozin/linagliptin) in a fixed-dose combination. Central composite design was employed for systematic optimization of critical method parameters, namely, % organic phase (X1), aqueous phase pH (X2) and flow rate (X3) while resolution, capacity factor and theoretical plate number as critical analytical attributes. Effective chromatographic separation of title analytes was accomplished on Std. Discovery C18 column at 30°C with mobile phase comprising acetonitrile: phosphate buffer pH 5 (38:62% v/v), pumped at a flow rate of 1 mL/min by isocratic elution pattern and UV detection at 222 nm. The model is rectilinear in the range of 1.0-200, 0.2-40 and 0.1-20 μg/mL at retention times of 3.04, 3.93 and 5.99 min for metformin, empagliflozin and linagliptin, respectively. The method obeyed all validation parameters of ICH Q2(R1) guidelines. The proposed HPLC method was highly robust for method transfer, regulatory flexibility within design space and can be used for assay of pharmaceutical dosage forms comprising these analytes. The proposed method was applied for stability studies of drugs under various stress conditions.
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Affiliation(s)
- Sunitha Gurrala
- Gokaraju Rangaraju College of Pharmacy, Osmania University, Hyderabad 500090, India
- Research Scholar, Department of Pharmacy, UCT, Osmania University, Hyderabad 500007, India
| | - Shiva Raj
- Department of Chemistry, University College of Science, Osmania University, Hyderabad 500007, India
| | - Subrahmanyam Cvs
- Gokaraju Rangaraju College of Pharmacy, Osmania University, Hyderabad 500090, India
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178
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Silveira GDO, Lourenço FR, Fonseca Pego AM, Guimarães Dos Santos R, Rossi GN, Hallak JEC, Yonamine M. Essential oil-based dispersive liquid-liquid microextraction for the determination of N,N-dimethyltryptamine and β-carbolines in human plasma: A novel solvent-free alternative. Talanta 2021; 225:121976. [PMID: 33592724 DOI: 10.1016/j.talanta.2020.121976] [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: 09/25/2020] [Revised: 12/03/2020] [Accepted: 12/04/2020] [Indexed: 12/30/2022]
Abstract
The present study describes the development of a novel solvent-free vortex-assisted dispersive liquid-liquid microextraction alternative based on a natural essential oil as extracting solvent (VA-EO-DLLME) for the determination of N,N-dimethyltryptamine (DMT), harmine (HRM), harmaline (HRL) and tetrahydroarmine (THH) (compounds found in the ayahuasca tea, a psychedelic plant preparation) in human plasma. After optimization through full factorial and Box-Behnken experimental designs, this VA-EO-DLLME followed by ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) was completely validated and applied to authentic plasma specimens. Sample preparation consisted in the addition of 60 mg of NaCl, 100 μL of borate buffer and 100 μL of Eucalyptus globulus essential oil to a 200 μL aliquot of human plasma. After 30 s of vortex agitation followed by 5 min of centrifugation (10,000 rpm), 80 μL of the oil supernatant was dried and resuspended in mobile phase prior to injection into the UHPLC-MS/MS system. Once optimized, the validated method yielded LoDs ≤1.0 ng mL-1 for all analytes. LoQ was 1.0 ng mL-1 for DMT, HRL and HRM and 2.0 ng mL-1 for THH. The method has shown to be linear over the range of LoQ up to 150 ng mL-1 (r2 ≥ 0.9926). Intra/inter-day precision and accuracy met the acceptance criteria at three quality control (QC) levels. An additional intermediate precision study demonstrated that, except for THH and HRL at low and medium QCs, the overall method performance was similar for the three different oil sources. Matrix effect evaluation showed predominant ion suppression, ranging from 56% to 83%. Recovery varied from 33 up to 101% with an average of 50 ± 15.8%. Selectivity studies showed no interferences. Analysis of 13 authentic samples proved method feasibility. Finally, we believe that our novel VA-EO-DLLME approach offers a very simple, fast, cost-effective and eco-friendly alternative based on the use of an easily accessible and entirely green material as an extracting solvent. This may represent an incentive for researchers to investigate novel and creative alternatives, such as essential oils, as substitutes of organic solvents for microextraction methods in forensic and clinical contexts.
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Affiliation(s)
- Gabriela de Oliveira Silveira
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, 05508-000, Brazil.
| | - Felipe Rebello Lourenço
- Department of Pharmacy, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, 05508-000, Brazil
| | | | - Rafael Guimarães Dos Santos
- Department of Neurosciences and Behaviour, University of São Paulo, Ribeirão Preto, 14049-900, Brazil; National Institute of Science and Technology-Translational Medicine, Ribeirão Preto, 14049-900, Brazil
| | - Giordano Novak Rossi
- Department of Neurosciences and Behaviour, University of São Paulo, Ribeirão Preto, 14049-900, Brazil
| | - Jaime E C Hallak
- Department of Neurosciences and Behaviour, University of São Paulo, Ribeirão Preto, 14049-900, Brazil; National Institute of Science and Technology-Translational Medicine, Ribeirão Preto, 14049-900, Brazil
| | - Mauricio Yonamine
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, 05508-000, Brazil.
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179
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Patel A, Dhande R, Thakkar H. Development of intravaginal rod insert bearing liposomal raloxifene hydrochloride and Leuprolide acetate as a potential carrier for uterine targeting. J Pharm Pharmacol 2021; 73:653-663. [PMID: 33772288 DOI: 10.1093/jpp/rgab003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 01/26/2021] [Indexed: 01/16/2023]
Abstract
OBJECTIVES This project aimed at the formulation of dual drug entrapped liposomes held as freeze-dried intravaginal rod insert (IVR), to be administered by vaginal route for uterine targeting. METHODS Liposomes were formulated by dehydration-rehydration method using 3 : 1 molar ratio of1,2-distearoyl-sn-glycero-3-phosphocholine : Cholesterol. Characterization was done for vesicle size, zeta potential, entrapment efficiency, surface morphology and % loading. KEY FINDINGS Spherical and discrete vesicles of size 354 nm were observed in transmission electron microscopy (TEM) image. The entrapment efficiency of 90.91% and 74.3% w/w was obtained for Raloxifene Hydrochloride (RLX) and Leuprolide acetate (LA) respectively. Drug release was sustained for 6 days. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay results showed that dual drug entrapped liposomal formulation show significant cytotoxicity, as also confirmed by higher apoptosis in cell cycle analysis and apoptosis studies (FACS) analysis. Pharmacodynamic studies in New Zealand white female rabbits revealed that intravaginal administration of RLX-LA entrapped liposomal formulation shows considerable fibroid regression. CONCLUSIONS Uterine targeting of liposomal RLX-LA suggests its potential to solve the limitations of the presently available therapeutic options.
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Affiliation(s)
- Arpita Patel
- Shri G.H. Patel Pharmacy Building, Centre for Postgraduate Studies in Pharmacy, TIFAC Core in NDDS, Donor's Plaza, Fatehgunj, Vadodara, India
| | - Rahul Dhande
- Shri G.H. Patel Pharmacy Building, Centre for Postgraduate Studies in Pharmacy, TIFAC Core in NDDS, Donor's Plaza, Fatehgunj, Vadodara, India
| | - Hetal Thakkar
- Shri G.H. Patel Pharmacy Building, Centre for Postgraduate Studies in Pharmacy, TIFAC Core in NDDS, Donor's Plaza, Fatehgunj, Vadodara, India
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180
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Microfluidics for nanomedicines manufacturing: An affordable and low-cost 3D printing approach. Int J Pharm 2021; 599:120464. [PMID: 33713759 DOI: 10.1016/j.ijpharm.2021.120464] [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: 12/29/2020] [Revised: 03/03/2021] [Accepted: 03/04/2021] [Indexed: 12/17/2022]
Abstract
During the last decade, an innovative lab on a chip technology known as microfluidics became popular in the pharmaceutical field to produce nanomedicines in a scalable way. Nevertheless, the predominant barriers for new microfluidics users are access to expensive equipment and device fabrication expertise. 3D printing technology promises to be an enabling new field that helps to overcome these drawbacks expanding the realm of microfluidics. Among 3D printing techniques, fused deposition modeling allows the production of devices with relatively inexpensive materials and printers. In this work, we developed two different microfluidic chips designed to obtain a passive micromixing by a "zigzag" bas-relief and by the presence of "split and recombine" channels. Computational fluid dynamics studies improved the evaluation of the mixing potential. A fused deposition modeling 3D printer was used to print the developed devices with polypropylene as manufacturing material. Then, two different model nanocarriers (i.e., polymeric nanoparticles and liposomes), loading cannabidiol as model drug, were formulated evaluating the influence of manufacturing parameters on the final nanocarrier characteristics with a design of experiments approach (2-level full factorial design). Both the chips showed an effective production of nanocarriers with tunable characteristics and with an efficient drug loading. These polypropylene-based microfluidic chips could represent an affordable and low-cost alternative to common microfluidic devices for the effective manufacturing of nanomedicines (both polymer- and lipid-based) after appropriate tuning of manufacturing parameters.
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181
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Kostoglou D, Tsaklidou P, Iliadis I, Garoufallidou N, Skarmoutsou G, Koulouris I, Giaouris E. Advanced Killing Potential of Thymol against a Time and Temperature Optimized Attached Listeria monocytogenes Population in Lettuce Broth. Biomolecules 2021; 11:397. [PMID: 33800308 PMCID: PMC7998208 DOI: 10.3390/biom11030397] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 02/10/2021] [Accepted: 03/04/2021] [Indexed: 12/27/2022] Open
Abstract
Fresh vegetables and salads are increasingly implicated in outbreaks of foodborne infections, such as those caused by Listeria monocytogenes, a dangerous pathogen that can attach to the surfaces of the equipment creating robust biofilms withstanding the killing action of disinfectants. In this study, the antimicrobial efficiency of a natural plant terpenoid (thymol) was evaluated against a sessile population of a multi-strain L. monocytogenes cocktail developed on stainless steel surfaces incubated in lettuce broth, under optimized time and temperature conditions (54 h at 30.6 °C) as those were determined following response surface modeling, and in comparison, to that of an industrial disinfectant (benzalkonium chloride). Prior to disinfection, the minimum bactericidal concentrations (MBCs) of each compound were determined against the planktonic cells of each strain. The results revealed the advanced killing potential of thymol, with a concentration of 625 ppm (= 4 × MBC) leading to almost undetectable viable bacteria (more than 4 logs reduction following a 15-min exposure). For the same degree of killing, benzalkonium chloride needed to be used at a concentration of at least 20 times more than its MBC (70 ppm). Discriminative repetitive sequence-based polymerase chain reaction (rep-PCR) also highlighted the strain variability in both biofilm formation and resistance. In sum, thymol was found to present an effective anti-listeria action under environmental conditions mimicking those encountered in the salad industry and deserves to be further explored to improve the safety of fresh produce.
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Affiliation(s)
| | | | | | | | | | | | - Efstathios Giaouris
- Laboratory of Food Microbiology and Hygiene, Department of Food Science and Nutrition, School of the Environment, University of the Aegean, 81400 Myrina, Lemnos, Greece; (D.K.); (P.T.); (I.I.); (N.G.); (G.S.); (I.K.)
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182
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Rampini D, de Araújo RV, Foitinho RE, Lourenço FR, Giarolla J. Analytical Quality by Design as an Important Tool to Determine the Best Analytical Conditions for Isoniazid and Its Respective Succinylated Prodrug. J AOAC Int 2021; 104:239-247. [PMID: 33351933 DOI: 10.1093/jaoacint/qsaa087] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 06/23/2020] [Indexed: 12/17/2022]
Abstract
BACKGROUND Tuberculosis is a worldwide health concern and isoniazid is the most used and considered one of the most effective drugs for its treatment. The "quality" concept must be incorporated into the final pharmaceutical product, according to the quality by design (QbD) definition. Therefore, the determination of analytical test conditions is extremely important and the design of experiments (DoE) becomes a very useful tool. OBJECTIVE This paper used the concept of QbD to assist the development of analytical conditions for isoniazid and its respective prodrug, applying HPLC. METHOD HPLC analytical methodologies were developed for isoniazid and its succinylated derivative. The experimental design was carried out using three analytical parameters at three levels. Four chromatographic responses were studied. The impact of analytical parameters on chromatographic responses was assessed using a Pareto chart. Regression models were obtained using multiple regression analysis. DoE analysis was conducted using the Minitab® program and the experiments were performed sequentially, with varying factors. RESULTS We identify three main risk parameters: mobile phase (high), flow rate (moderate), and pH of buffer (moderate). The ratio of mobile phase buffer (X2) and mobile phase pH (X3) had a major influence on the peak resolutions (Y3). The capacity factors for iso-suc (Y1) and isoniazid (Y2) peaks should be within 3-9 and 4-10, respectively. The peak resolutions between iso-suc and isoniazid (Y3) should be above two. CONCLUSIONS We designed 27 experiments, obtaining 1.0 mL/min flow rate, 95% buffer in the mobile phase, and pH 7.0 as the optimal analytical conditions. HIGHLIGHTS Analytical Quality by Design was used as an important tool to determine the best analytical test conditions for isoniazid and its respective prodrug - succinylated isoniazid.
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Affiliation(s)
- Denise Rampini
- University of São Paulo, Faculty of Pharmaceutical Sciences, Department of Pharmacy, Av. Prof. LineuPrestes, 580, Cidade Universitária, São Paulo, 05508-000, Brazil
| | - Renan Vinícius de Araújo
- University of São Paulo, Faculty of Pharmaceutical Sciences, Department of Pharmacy, Av. Prof. LineuPrestes, 580, Cidade Universitária, São Paulo, 05508-000, Brazil
| | - Rodrigo Esteves Foitinho
- University of São Paulo, Faculty of Pharmaceutical Sciences, Department of Pharmacy, Av. Prof. LineuPrestes, 580, Cidade Universitária, São Paulo, 05508-000, Brazil
| | - Felipe Rebello Lourenço
- University of São Paulo, Faculty of Pharmaceutical Sciences, Department of Pharmacy, Av. Prof. LineuPrestes, 580, Cidade Universitária, São Paulo, 05508-000, Brazil
| | - Jeanine Giarolla
- University of São Paulo, Faculty of Pharmaceutical Sciences, Department of Pharmacy, Av. Prof. LineuPrestes, 580, Cidade Universitária, São Paulo, 05508-000, Brazil
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183
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Dinç-Zor Ş, Aksu Dönmez Ö. Box-Behnken Design-Desirability Function Approach in Optimization of HPLC Method for Simultaneous Determination of Ibuprofen Along with Additives in Syrup Formulation. J AOAC Int 2021; 104:78-83. [PMID: 33751066 DOI: 10.1093/jaoacint/qsaa096] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 06/30/2020] [Accepted: 07/01/2020] [Indexed: 11/14/2022]
Abstract
BACKGROUND The advantages of simultaneous analyses are a decrease in analysis time and a more economical use of solvents and reagents. It is desirable that HPLC analyses possess both short term and good resolution. OBJECTIVE The aim of the current study is to develop an HPLC method for the simultaneous determination of ibuprofen, sodium benzoate, methyl paraben and propyl paraben as preservatives, and sunset yellow as a colorant, in syrup formulation. METHOD To optimize chromatographic separation conditions, multi-response optimization using the Derringer's desirability function was employed for the development of a rapid and efficient HPLC method. The ranges of independent variables used for the optimization process were 50-60% (v/v) for acetonitrile, 5.0-7.0 for pH, and 1.0-2.0 mL/min for flow rate of the mobile phase. The effects of these variables on the output responses, such as critical resolution between sunset yellow and sodium benzoate and retention time of the last peak indicating analysis time of the method, were evaluated by statistical experimental design. RESULTS Optimum conditions fixed for the simultaneous analyses were acetonitrile:phosphate buffer (60:40, v/v), pH 5.0, and a flow rate of 1.8 mL/min. The eluate was monitored using a photo diode detector set at 220 nm. Total chromatographic analysis time was approximately 3 min. CONCLUSIONS The developed method validated as per International Conference on Harmonization guidelines was successfully applied for the determination of five compounds in their pharmaceutical formulation. HIGHLIGHTS This efficient method has isocratic elution system and can be used for routine analyses of these compounds in similar pharmaceutical products.
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Affiliation(s)
- Şule Dinç-Zor
- Yildiz Technical University, Department of Chemistry, Davutpasa Campus, Istanbul , Turkey, 34220
| | - Özlem Aksu Dönmez
- Yildiz Technical University, Department of Chemistry, Davutpasa Campus, Istanbul , Turkey, 34220
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184
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Ghalehkhondabi V, Fazlali A, Daneshpour F. Electrochemical extraction of palladium from spent heterogeneous catalysts of a petrochemical unit using the leaching and flat plate graphite electrodes. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117527] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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185
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Application of quality by design approach for HPTLC simultaneous determination of amlodipine and celecoxib in presence of process-related impurity. Microchem J 2021. [DOI: 10.1016/j.microc.2020.105857] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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186
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WEI J, QIN M, YANG J, YANG L. [Research progress of microextraction by packed sorbent and its application in microvolume sample extraction]. Se Pu 2021; 39:219-228. [PMID: 34227304 PMCID: PMC9403807 DOI: 10.3724/sp.j.1123.2020.04024] [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: 04/28/2020] [Indexed: 11/30/2022] Open
Abstract
Microextraction is a rapidly developing sample preparation technology in the field of analytical chemistry, which is seeing widespread application. Accurate sample preparation can not only save time but also improve the efficiency of analysis, determination, and data quality. At present, sample pretreatment methods must be rapid, allow for miniaturization, automation, and convenient online connection with analytical instruments. To meet the requirements of green analytical methods and improve the extraction efficiency, microextraction techniques have been introduced as suitable replacements to conventional sample preparation and extraction methods. Microextraction using a packed sorbent (MEPS) is a new type of sample preparation technology. The MEPS equipment was prepared using microsyringe with a volume of 50-500 μL, including MEPS syringes and MEPS adsorption beds (barrel insert and needle, BIN), which is essentially similar to a miniaturized solid phase extraction device. The BIN contains the adsorbent and is built into the syringe needle. A typical MEPS extraction procedure involves repeatedly pumping the sample solution in two directions (up and down) through the adsorbent multiple times in the MEPS syringe. The specific operation course of MEPS includes conditioning, loading, washing, elution, and introduction into the analysis instrument. The conditioning process is adopted to infiltrate the dry sorbent and remove bubbles between the filler particles. The adsorption process is accomplished by pulling the liquid plunger of the syringe so that the sample flows through the adsorbent in both directions multiple times. The washing process involves rinsing the sorbent to remove unwanted components after the analyte is retained. The elution process involves the use of an eluent to ensure that the sample flows through the adsorbent in both directions multiple times, so that elution can be realized by the pumping-pushing action. The target analyte is eluted with the eluent, which can be directly used for chromatographic analysis. However, when processing complex biological matrix samples by MEPS, pretreatment steps such as dilution of the sample and removal of proteins are commonly required. At present, the operation modes of the MEPS equipment are classified into three types: manual, semi-automated, and fully automated. This increase in the degree of automation is highly conducive to processing extremely low or extremely high sample volumes. Critical factors affecting the MEPS performance have been investigated in this study. The conditions for MEPS optimization are the operating process parameters, including sample flow rate, sample volume, number of sample extraction cycles, type and volume of the adsorbent, and elution solvents. It is also necessary to consider the effect of the sample matrix on the performance of MEPS. The MEPS sorbent should be cleaned by a solvent to eliminate carryover and reuse. The sorbent is a core aspect of MEPS. Several types of commercial and non-commercial sorbents have been used in MEPS. Commercial sorbents include silica-based sorbents such as unmodified silica (SIL), C2, C8, and C18. Unmodified silicon-based silica is a normal phase adsorption material, which is highly polar and can be used to retain polar analytes. C18, C8, and C2 materials are suitable for reversed-phase adsorption, while SCX, SAX, APS, and M1 (C8+SCX) adsorbents are suitable for the mixed-mode and ion-exchange modes. Noncommercial sorbents include molecularly imprinted materials, restricted-access molecularly imprinted materials, graphitized carbon, conductive polymer materials, modified silicon materials, and covalent-organic framework materials. The performance of MEPS has recently been illustrated by online with LC-MS and GC-MS assays for the analysis of biological matrices, environmental samples, and food samples. Pretreatment in MEPS protocols includes dilution, protein precipitation, and centrifugation in biological fluid matrices. Because of the small sample size, fast operation, etc., MEPS is expected to be more widely used in the analysis of bio-matrix samples. MEPS devices could also play an important role in field pretreatment and analysis.
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Affiliation(s)
- Jianan WEI
- 国民核生化灾害防护国家重点实验室, 北京 102205
- State key Laboratory of Nuclear, Biological and Chemical Protection for Civilian, Beijing 102205, China
| | - Molin QIN
- 国民核生化灾害防护国家重点实验室, 北京 102205
- State key Laboratory of Nuclear, Biological and Chemical Protection for Civilian, Beijing 102205, China
| | - Junchao YANG
- 国民核生化灾害防护国家重点实验室, 北京 102205
- State key Laboratory of Nuclear, Biological and Chemical Protection for Civilian, Beijing 102205, China
| | - Liu YANG
- 国民核生化灾害防护国家重点实验室, 北京 102205
- State key Laboratory of Nuclear, Biological and Chemical Protection for Civilian, Beijing 102205, China
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187
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Chand P, Kumar H, Badduri N, Gupta NV, Bettada VG, Madhunapantula SV, Kesharwani SS, Dey S, Jain V. Design and evaluation of cabazitaxel loaded NLCs against breast cancer cell lines. Colloids Surf B Biointerfaces 2021; 199:111535. [DOI: 10.1016/j.colsurfb.2020.111535] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 10/15/2020] [Accepted: 12/03/2020] [Indexed: 12/17/2022]
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188
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Low-temperature lithium extraction from α-spodumene with NH4HF2: Modeling and optimization by least squares and artificial neural networks. Chem Eng Res Des 2021. [DOI: 10.1016/j.cherd.2020.12.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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189
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Darvishnejad F, Raoof JB, Ghani M. In-situ synthesis of nanocubic cobalt oxide @ graphene oxide nanocomposite reinforced hollow fiber-solid phase microextraction for enrichment of non-steroidal anti-inflammatory drugs from human urine prior to their quantification via high-performance liquid chromatography-ultraviolet detection. J Chromatogr A 2021; 1641:461984. [PMID: 33611121 DOI: 10.1016/j.chroma.2021.461984] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 01/30/2021] [Accepted: 02/07/2021] [Indexed: 01/15/2023]
Abstract
The in-situ synthesis and application of nanocubic Co3O4-coated graphene oxide (Co3O4@ GO) was introduced for the first time to present a cost-effective, stable and convenient operation and a simple device for hollow fiber solid-phase microextraction (HF-SPME) of four selected nonsteroidal anti-inflammatory drugs (NSAIDs) including diclofenac, mefenamic acid, ibuprofen and indomethacin. The extracted analytes were desorbed by an appropriate organic solvent and analyzed via high-performance liquid chromatography-ultraviolet detection (HPLC-UV). The prepared sorbent was approved using different characterization methods such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX). The variables effective on the Co3O4@GO-HF-SPME method including extraction time, desorption time, desorption solvent volume, sample pH, stirring rate and ionic strength were screened via Plackett-Burman design and then optimized by Box-Behnken design. Under optimal condition, the calibration curves were linear within the range of 1.0-200.0 µg L-1 of analyte concentration with detection limits of 0.18-1.1 µg L-1 and the relative standard deviations less than 10.1%. The limits of quantification (LOQs) were in the range of 0.60-3.67 µg L-1. Matrix effect was not observed with this method; therefore, standard addition is not necessary for quantification of target compounds. The enrichment factors were obtained in the range of 49-68. The relative recoveries of the urine sample analysis were calculated in the range of 93-102%. Finally, the presented method exhibited good sensitivity, excellent repeatability, high reusability and acceptable precision, which will be a promising method to analyze various nonsteroidal anti-inflammatory drugs in urine samples.
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Affiliation(s)
- Fatemeh Darvishnejad
- Electroanalytical Chemistry Research Laboratory, Department of Analytical Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran
| | - Jahan Bakhsh Raoof
- Electroanalytical Chemistry Research Laboratory, Department of Analytical Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran.
| | - Milad Ghani
- Department of Analytical Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran
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190
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Rodrigues RM, Pereira RN, Vicente AA, Cavaco-Paulo A, Ribeiro A. Ohmic heating as a new tool for protein scaffold engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 120:111784. [PMID: 33545911 DOI: 10.1016/j.msec.2020.111784] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 11/11/2020] [Accepted: 12/02/2020] [Indexed: 11/15/2022]
Abstract
Ohmic heating (OH) is recognised as an emerging processing technology which recently is gaining increasing attention due to its ability to induce and control protein functionality. In this study, OH was used for the first time in the production of scaffolds for tissue engineering. BSA/casein solutions were processed by OH, promoting protein denaturation and aggregation, followed by cold-gelation through the addition of Ca2+. The formation of stable scaffolds was mostly dependent on the temperature and treatment time during OH processing. The variations of the electric field (EF) induced changes in the functional properties of both gel forming solutions and final scaffolds (contact angle, swelling, porosity, compressive modulus and degradation rate). The scaffolds' biological performance was evaluated regarding their ability to support the adhesion and proliferation of human fibroblast cells. The production process resulted in a non-cytotoxic material and the changes imposed by the presence of the EF during the scaffolds' production improved cellular proliferation and metabolic activity. Protein functionalization assisted by OH presents a promising new alternative for the production of improved and tuneable protein-based scaffolds for tissue engineering.
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Affiliation(s)
- Rui M Rodrigues
- CEB-Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal.
| | - Ricardo N Pereira
- CEB-Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
| | - António A Vicente
- CEB-Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
| | - Artur Cavaco-Paulo
- CEB-Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
| | - Artur Ribeiro
- CEB-Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
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191
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Perovani IS, Serpellone CO, de Oliveira ARM. An appraisal of experimental designs: Application to enantioselective capillary electromigration techniques. Electrophoresis 2021; 42:1726-1743. [PMID: 33544902 DOI: 10.1002/elps.202000334] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 01/29/2021] [Accepted: 01/31/2021] [Indexed: 02/06/2023]
Abstract
Enantioresolution processes are vital tools for investigating the enantioselectivities of chiral compounds. An analyst resolves to optimize enantioresolution conditions once they are determined. Generally, optimization is conducted by a one-factor-at-a-time (OFAT) approach. Although this approach may determine an adequate condition for the method, it does not often allow the estimation of the real optimum condition. Experimental designs are conducive for the optimization of enantioresolution methods via capillary electromigration techniques (CETs). They can efficiently extract information from the behavior of a method and enable the estimation of the real optimum condition. Furthermore, the application of the analytical quality by design (AQbD) approach to the development of CET-based enantioselective methods is a trend. This article (i) offers an overview of the application of experimental designs to the development of enantioselective methods from 2015 to mid-2020, (ii) reveals the experimental designs that are presently employed in CET-based enantioresolutions, and (iii) offers a critical point of view on how the different experimental designs can aid the optimization of enantioresolution processes by considering the method parameters.
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Affiliation(s)
- Icaro Salgado Perovani
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Sao Paulo, 14040-901, Brazil
| | - Carolina Oliveira Serpellone
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Sao Paulo, 14040-901, Brazil
| | - Anderson Rodrigo Moraes de Oliveira
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Sao Paulo, 14040-901, Brazil.,National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM), UNESP, Institute of Chemistry, Araraquara, Sao Paulo, 14800-900, Brazil
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192
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Peris-Díaz MD, Krężel A. A guide to good practice in chemometric methods for vibrational spectroscopy, electrochemistry, and hyphenated mass spectrometry. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2020.116157] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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193
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Studies on effective interaction parameters in extraction of Pr and Nd using Aliquat 336 from NdFeB magnet-leaching solution: Multiple response optimizations by desirability function. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.115123] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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194
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Liu M, Zhang W, Yao J, Niu J. Production, purification, characterization, and biological properties of Rhodosporidium paludigenum polysaccharide. PLoS One 2021; 16:e0246148. [PMID: 33513164 PMCID: PMC7845956 DOI: 10.1371/journal.pone.0246148] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 01/14/2021] [Indexed: 11/18/2022] Open
Abstract
The yield of marine red yeast polysaccharide (MRYP) obtained from Rhodosporidium paludigenum was increased by optimizing fermentation conditions, and the pure polysaccharide was extracted by column chromatography. The molecular weight of pure MRYP and the ratio of mannose to glucose in components of MRYP were determined. Antioxidant and antibacterial abilities of MRYP were investigated in vitro and in vivo. The optimal fermentation parameters were as follows: Medium 4, pH = 6.72, temperature = 30.18°C, blades speed = 461.36 r/min; the optimized yield reached 4323.90 mg/L, which was 1.31 times the original yield. The sequence of factors that affected the MRYP yield was the blades speed>pH>temperature. The main components of MRYP were MYH-1 and MYH-2. The molecular weights of MYH-1 and MYH-2 were 246.92 kDa and 21.88 kDa, respectively; they accounted for 53.60% and 28.75% of total polysaccharide. In MYH-1 and MYH-2, the proportion of glucose and mannose accounted for 46.94%, 38.46%, and 67.10%, 7.17%, respectively. In vitro, the ability of scavenging DPPH•, •OH, and •O2− radical was 32.26%, 24.34%, and 22.09%; the minimum inhibitory concentration (MIC) of MRYP was 480 μg/mg. In vivo, MRYP improved the lambs’ body weight, antioxidant enzyme activity, and the number of probiotics, but it reduced the feed/gain (F/G) ratio and the number of pathogenic bacteria in 60-days-old lambs.
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Affiliation(s)
- Mengjian Liu
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang, China
| | - WenJu Zhang
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang, China
- * E-mail:
| | - Jun Yao
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang, China
| | - Junli Niu
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang, China
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195
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Tortorella S, Cinti S. How Can Chemometrics Support the Development of Point of Need Devices? Anal Chem 2021; 93:2713-2722. [DOI: 10.1021/acs.analchem.0c04151] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Sara Tortorella
- Molecular Horizon srl, Via Montelino 30, 06084 Bettona, Perugia, Italy
| | - Stefano Cinti
- Department of Pharmacy, University of Naples “Federico II”, Via Domenico Montesano 49, 80131 Naples, Italy
- BAT Center−Interuniversity Center for Studies on Bioinspired Agro-Environmental Technology, University of Napoli “Federico II”, 80055 Portici, Naples, Italy
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196
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Model-assisted DoE software: optimization of growth and biocatalysis in Saccharomyces cerevisiae bioprocesses. Bioprocess Biosyst Eng 2021; 44:683-700. [PMID: 33471162 PMCID: PMC7997827 DOI: 10.1007/s00449-020-02478-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 11/05/2020] [Indexed: 10/26/2022]
Abstract
Bioprocess development and optimization are still cost- and time-intensive due to the enormous number of experiments involved. In this study, the recently introduced model-assisted Design of Experiments (mDoE) concept (Möller et al. in Bioproc Biosyst Eng 42(5):867, https://doi.org/10.1007/s00449-019-02089-7 , 2019) was extended and implemented into a software ("mDoE-toolbox") to significantly reduce the number of required cultivations. The application of the toolbox is exemplary shown in two case studies with Saccharomyces cerevisiae. In the first case study, a fed-batch process was optimized with respect to the pH value and linearly rising feeding rates of glucose and nitrogen source. Using the mDoE-toolbox, the biomass concentration was increased by 30% compared to previously performed experiments. The second case study was the whole-cell biocatalysis of ethyl acetoacetate (EAA) to (S)-ethyl-3-hydroxybutyrate (E3HB), for which the feeding rates of glucose, nitrogen source, and EAA were optimized. An increase of 80% compared to a previously performed experiment with similar initial conditions was achieved for the E3HB concentration.
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197
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Grutes JV, Ferreira RG, Pereira MU, Candido FS, Spisso BF. Development and validation of an LC-MS/MS screening method for macrolide and quinolone residues in baby food. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2021; 56:197-211. [PMID: 33463404 DOI: 10.1080/03601234.2021.1872324] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A simple, rapid and sensitive screening method by liquid chromatography-tandem mass spectrometry (LC-MS/MS) was developed for the identification of 7 macrolides (clarithromycin, erythromycin, oleandomycin, spiramycin, tilmicosin, troleandomycin and tylosin) and 8 quinolones (ciprofloxacin, difloxacin, enrofloxacin, flumequine, moxifloxacin, nalidixic acid, norfloxacin and ofloxacin) in meat and egg-based baby foods. Sample preparation was performed using an alkaline modified QuEChERS (Quick, Easy, Cheap, Effective, Rugged, Safe) extraction method without additional clean-up steps. A simplex-lattice mixture experimental design was used in the optimization of the QuEChERS extraction solvent. The developed method was successfully validated according to the Commission Decision 2002/657/EC and the European Community Reference Laboratories Residues Guidelines regarding the validation of screening methods 20/01/2010, adopting a fixed permited tolerance for relative ion ratio. Samples of baby food (n = 44) commercialized in Rio de Janeiro, Brazil, were analyzed using the validated method and none of them presented residues of the searched macrolides and quinolones, with a screening target value of 5 µg kg-1.
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Affiliation(s)
- Jônatas V Grutes
- Chemistry Department, Instituto Nacional de Controle de Qualidade em Saúde, Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Rosana G Ferreira
- Chemistry Department, Instituto Nacional de Controle de Qualidade em Saúde, Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Mararlene U Pereira
- Chemistry Department, Instituto Nacional de Controle de Qualidade em Saúde, Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Felipe S Candido
- Chemistry Department, Instituto Nacional de Controle de Qualidade em Saúde, Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Bernardete F Spisso
- Chemistry Department, Instituto Nacional de Controle de Qualidade em Saúde, Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, Rio de Janeiro, Brazil
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198
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Maia LC, Nano RMW, Santos WPCD, de Oliveira FS, Barros CO, de Souza Miranda KE. Evaluation of the nutritional quality of cereal bars made with pulse flours using desirability functions. FOOD SCI TECHNOL INT 2021; 27:702-711. [PMID: 33401926 DOI: 10.1177/1082013220983080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The development of nutritious, low-cost snacks has become increasingly important due to consumer demand for healthier diets. In this study, sensory and physical-chemical parameters and mineral compositions (P, Ca, Na, K, Mg, Fe, Zn, Al, Cu, Mn, Ni and Ba) of cereal bars were evaluated. The bars were made with flours of Lablab purpureus L. Sweet (mangalo), Vigna unguiculata L. Walp (cowpea) or Cajanus cajan L. Huth (pigeon pea) and the desirability function was used to attain the best formulation for maximising the content of protein, fibre, ashes and essential elements. Sensory analysis revealed satisfactory acceptability. Acidity did not change significantly (p > 0.05), and water activity values did not exceed 0.557 over 90 days, indicating stability. Principal component analysis revealed no significant differences when comparing the mineral content between the bars. The desirability function indicated that the cowpea-based bar had a higher nutritional quality, with a protein content of 4.91 ± 0.25 g 100 g-1, P content of 187.7 ± 3.6 mg 100 g-1, Mg content of 87.37 ± 1.19 mg 100 g-1 and Mn content of 2020 ± 130 µg 100 g-1, than the other bars. The overall sensory evaluation also yielded a high score for the cowpea-based bar (overall quality equal to 6.23 ± 1.10). Therefore, pulse flours could be potential nutritional ingredients for making snacks, and in particular, cereal bars containing them could be a viable product alternative for small rural cooperatives.
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Affiliation(s)
- Lucas Costa Maia
- Instituto Federal da Bahia, Bahia, Brazil.,Universidade de São Paulo, São Paulo, Brazil
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Di Donato F, D’Archivio AA, Maggi MA, Rossi L. Detection of Plant-Derived Adulterants in Saffron (Crocus sativus L.) by HS-SPME/GC-MS Profiling of Volatiles and Chemometrics. FOOD ANAL METHOD 2021. [DOI: 10.1007/s12161-020-01941-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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200
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Díaz-Liñán M, García-Valverde M, Lucena R, Cárdenas S, López-Lorente A. Dual-template molecularly imprinted paper for the determination of drugs of abuse in saliva samples by direct infusion mass spectrometry. Microchem J 2021. [DOI: 10.1016/j.microc.2020.105686] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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