1
|
Giordano GF, Freitas VMS, Schleder GR, Santhiago M, Gobbi AL, Lima RS. Bifunctional Metal Meshes Acting as a Semipermeable Membrane and Electrode for Sensitive Electrochemical Determination of Volatile Compounds. ACS APPLIED MATERIALS & INTERFACES 2021; 13:35914-35923. [PMID: 34309352 DOI: 10.1021/acsami.1c07874] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The monitoring of toxic inorganic gases and volatile organic compounds has brought the development of field-deployable, sensitive, and scalable sensors into focus. Here, we attempted to meet these requirements by using concurrently microhole-structured meshes as (i) a membrane for the gas diffusion extraction of an analyte from a donor sample and (ii) an electrode for the sensitive electrochemical determination of this target with the receptor electrolyte at rest. We used two types of meshes with complementary benefits, i.e., Ni mesh fabricated by robust, scalable, and well-established methods for manufacturing specific designs and stainless steel wire mesh (SSWM), which is commercially available at a low cost. The diffusion of gas (from a donor) was conducted in headspace mode, thus minimizing issues related to mesh fouling. When compared with the conventional polytetrafluoroethylene (PTFE) membrane, both the meshes (40 μm hole diameter) led to a higher amount of vapor collected into the electrolyte for subsequent detection. This inedited fashion produced a kind of reverse diffusion of the analyte dissolved into the electrolyte (receptor), i.e., from the electrode to bulk, which further enabled highly sensitive analyses. Using Ni mesh coated with Ni(OH)2 nanoparticles, the limit of detection reached for ethanol was 24-fold lower than the data attained by a platform with a PTFE membrane and placement of the electrode into electrolyte bulk. This system was applied in the determination of ethanol in complex samples related to the production of ethanol biofuel. It is noteworthy that a simple equation fitted by machine learning was able to provide accurate assays (accuracies from 97 to 102%) by overcoming matrix effect-related interferences on detection performance. Furthermore, preliminary measurements demonstrated the successful coating of the meshes with gold films as an alternative raw electrode material and the monitoring of HCl utilizing Au-coated SSWMs. These strategies extend the applicability of the platform that may help to develop valuable volatile sensing solutions.
Collapse
Affiliation(s)
- Gabriela F Giordano
- Brazilian Center for Research in Energy and Materials, Brazilian Nanotechnology National Laboratory, Campinas, São Paulo 13083-970, Brazil
| | - Vitoria M S Freitas
- Brazilian Center for Research in Energy and Materials, Brazilian Nanotechnology National Laboratory, Campinas, São Paulo 13083-970, Brazil
- Faculty of Chemical Engineering, University of Campinas, Campinas, São Paulo 13083-970, Brazil
| | - Gabriel R Schleder
- Brazilian Center for Research in Energy and Materials, Brazilian Nanotechnology National Laboratory, Campinas, São Paulo 13083-970, Brazil
- Federal University of ABC, Santo André, São Paulo 09210-580, Brazil
| | - Murilo Santhiago
- Brazilian Center for Research in Energy and Materials, Brazilian Nanotechnology National Laboratory, Campinas, São Paulo 13083-970, Brazil
- Federal University of ABC, Santo André, São Paulo 09210-580, Brazil
| | - Angelo L Gobbi
- Brazilian Center for Research in Energy and Materials, Brazilian Nanotechnology National Laboratory, Campinas, São Paulo 13083-970, Brazil
| | - Renato S Lima
- Brazilian Center for Research in Energy and Materials, Brazilian Nanotechnology National Laboratory, Campinas, São Paulo 13083-970, Brazil
- Institute of Chemistry, University of Campinas, Campinas, São Paulo 13083-970, Brazil
- São Carlos Institute of Chemistry, University of São Paulo, São Carlos, São Paulo 09210-580, Brazil
- Federal University of ABC, Santo André, São Paulo 09210-580, Brazil
| |
Collapse
|
2
|
The high-efficient production of phelligridin LA by Inonotus baumii with an integrated fermentation-separation process. Bioprocess Biosyst Eng 2020; 43:1141-1151. [PMID: 32078046 DOI: 10.1007/s00449-020-02310-y] [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: 12/13/2019] [Accepted: 02/09/2020] [Indexed: 10/25/2022]
Abstract
The phelligridin LA was one of the valuable metabolites synthesized by the medicinal fungus Sanghuang in liquid fermentation. In the improvement of PLA productivity by fermentation, we investigated the optimal conditions for the efficient separation of PLA from the fermentation broth with a chromatographic column packed with the macroporous resin ADS-17. Based on the findings, we further developed an integrated bioreactor system that coupled the fermentation and separation of PLA. Fermentation experiments with the bioreactor system testified the performance of our design in fortification of the PLA production: an improvement of PLA production by 2.14 folds was successfully achieved due to the prompt removal of the PLA, while the formation of hyphae biomass was not affected. Also, the integrated system could afford a simultaneous purification of PLA to a purity of 92.95% with a recovery of 84.3%, which was comparable to that of the PLA purified with an additional process (97.53%), at a reasonable recovery. This study provided a feasible approach for the improved production of PLA by fermentation. Besides, the design of the integrated bioreactor system offered a useful reference for the fermentation process development of fungi for the production of diverse valuable metabolites.
Collapse
|
3
|
Giordano GF, Vieira LCS, Gobbi AL, Kubota LT, Lima RS. Gravity-assisted distillation on a chip: Fabrication, characterization, and applications. Anal Chim Acta 2018; 1033:128-136. [PMID: 30172318 DOI: 10.1016/j.aca.2018.05.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 04/11/2018] [Accepted: 05/07/2018] [Indexed: 11/24/2022]
Abstract
Distillation is widely used in industrial processes and laboratories for sample pre-treatment. The conventional apparatus of flash distillation is composed of heating source, distilling flask, condenser, and receiving flask. As disadvantages, this method shows manual and laborious analyses with high consumption of chemicals. In this paper, all these limitations were addressed by developing a fully integrated microscale distiller in agreement with the apparatus of conventional flash distillation. The main challenge facing the distillation miniaturization is the phase separation since surface forces take over from the gravity in microscale channels. Otherwise, our chip had ability to perform gravity-assisted distillations because of the somewhat large dimensions of the distillation chamber (roughly 900 μL) that was obtained by 3D-printing. The functional distillation units were integrated into a single device composed of polydimethylsiloxane (PDMS). Its fabrication was cost-effective and simple by avoiding the use of cleanroom and bonding step. In addition to user-friendly analysis and low consumption of chemicals, the method requires cost-effective instrumentation, namely, voltage supply and analytical balance. Furthermore, the so called distillation-on-a-chip (DOC) eliminates the use of membranes and electrodes (usually employed in microfluidic desalinations reported in the literature), thus avoiding drawbacks such as liquid leakage, membrane fouling, and electrode passivation. The DOC promoted desalinations at harsh salinity (NaCl 600.0 mmol L-1) with high throughput and salt removal efficiency (roughly 99%). Besides, the method was used for determination of ethanol in alcoholic beverages to show the potential of the approach toward quantitative purposes.
Collapse
Affiliation(s)
- Gabriela Furlan Giordano
- Laboratório Nacional de Nanotecnologia (LNNano), Centro Nacional de Pesquisa Em Energia e Materiais (CNPEM), Campinas, São Paulo, 13083-970, Brazil; Instituto de Química, Universidade Estadual de Campinas (UNICAMP), Campinas, São Paulo, 13083-970, Brazil
| | - Luis Carlos Silveira Vieira
- Laboratório Nacional de Nanotecnologia (LNNano), Centro Nacional de Pesquisa Em Energia e Materiais (CNPEM), Campinas, São Paulo, 13083-970, Brazil
| | - Angelo Luiz Gobbi
- Laboratório Nacional de Nanotecnologia (LNNano), Centro Nacional de Pesquisa Em Energia e Materiais (CNPEM), Campinas, São Paulo, 13083-970, Brazil
| | - Lauro Tatsuo Kubota
- Instituto de Química, Universidade Estadual de Campinas (UNICAMP), Campinas, São Paulo, 13083-970, Brazil
| | - Renato Sousa Lima
- Laboratório Nacional de Nanotecnologia (LNNano), Centro Nacional de Pesquisa Em Energia e Materiais (CNPEM), Campinas, São Paulo, 13083-970, Brazil; Instituto de Química, Universidade Estadual de Campinas (UNICAMP), Campinas, São Paulo, 13083-970, Brazil.
| |
Collapse
|
4
|
Cardoso de Sá A, Cipri A, González-Calabuig A, Stradiotto NR, del Valle M. Multivariate Determination of Total Sugar Content and Ethanol in Bioethanol Production Using Carbon Electrodes Modified with MWCNT/MeOOH and Chemometric Data Treatment. ELECTROANAL 2018. [DOI: 10.1002/elan.201700725] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Acelino Cardoso de Sá
- Department of Analytical Chemistry, Institute of Chemistry; Universidade Estadual Paulista (UNESP); 55 Rua Francisco Degni Araraquara 14800-060, SP Brazil
- Sensors and Biosensors Group, Department of Chemistry; Universitat Autònoma de Barcelona, Edifici Cn; 08193 Bellaterra Barcelona Spain
| | - Andrea Cipri
- Sensors and Biosensors Group, Department of Chemistry; Universitat Autònoma de Barcelona, Edifici Cn; 08193 Bellaterra Barcelona Spain
| | - Andreu González-Calabuig
- Sensors and Biosensors Group, Department of Chemistry; Universitat Autònoma de Barcelona, Edifici Cn; 08193 Bellaterra Barcelona Spain
| | - Nelson Ramos Stradiotto
- Department of Analytical Chemistry, Institute of Chemistry; Universidade Estadual Paulista (UNESP); 55 Rua Francisco Degni Araraquara 14800-060, SP Brazil
| | - Manel del Valle
- Sensors and Biosensors Group, Department of Chemistry; Universitat Autònoma de Barcelona, Edifici Cn; 08193 Bellaterra Barcelona Spain
| |
Collapse
|
5
|
A novel flow injection chemiluminescence method for automated and miniaturized determination of phenols in smoked food samples. Food Chem 2017; 237:929-935. [DOI: 10.1016/j.foodchem.2017.06.049] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 05/06/2017] [Accepted: 06/07/2017] [Indexed: 11/19/2022]
|
6
|
Teixeira CA, Giordano GF, Beltrame MB, Vieira LCS, Gobbi AL, Lima RS. Renewable Solid Electrodes in Microfluidics: Recovering the Electrochemical Activity without Treating the Surface. Anal Chem 2016; 88:11199-11206. [DOI: 10.1021/acs.analchem.6b03453] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Carlos A. Teixeira
- Laboratório
de Microfabricação, Laboratório Nacional de Nanotecnologia, Centro Nacional de Pesquisa em Energia e Materiais, Campinas, São Paulo 13083-970, Brasil
- Instituto
de Química, Universidade Estadual de Campinas, Campinas, São Paulo 13083-970, Brasil
| | - Gabriela F. Giordano
- Laboratório
de Microfabricação, Laboratório Nacional de Nanotecnologia, Centro Nacional de Pesquisa em Energia e Materiais, Campinas, São Paulo 13083-970, Brasil
- Instituto
de Química, Universidade Estadual de Campinas, Campinas, São Paulo 13083-970, Brasil
| | - Maisa B. Beltrame
- Laboratório
de Microfabricação, Laboratório Nacional de Nanotecnologia, Centro Nacional de Pesquisa em Energia e Materiais, Campinas, São Paulo 13083-970, Brasil
| | - Luis C. S. Vieira
- Laboratório
de Microfabricação, Laboratório Nacional de Nanotecnologia, Centro Nacional de Pesquisa em Energia e Materiais, Campinas, São Paulo 13083-970, Brasil
| | - Angelo L. Gobbi
- Laboratório
de Microfabricação, Laboratório Nacional de Nanotecnologia, Centro Nacional de Pesquisa em Energia e Materiais, Campinas, São Paulo 13083-970, Brasil
| | - Renato S. Lima
- Laboratório
de Microfabricação, Laboratório Nacional de Nanotecnologia, Centro Nacional de Pesquisa em Energia e Materiais, Campinas, São Paulo 13083-970, Brasil
- Instituto
de Química, Universidade Estadual de Campinas, Campinas, São Paulo 13083-970, Brasil
| |
Collapse
|
7
|
Turbulence in microfluidics: Cleanroom-free, fast, solventless, and bondless fabrication and application in high throughput liquid-liquid extraction. Anal Chim Acta 2016; 940:73-83. [DOI: 10.1016/j.aca.2016.08.052] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 08/27/2016] [Accepted: 08/29/2016] [Indexed: 11/13/2022]
|