1
|
Zhu H, Leng J, Ju R, Qu S, Tian J, Leng H, Tao S, Liu C, Wu Z, Ren F, Lyu Y, Zhang N. Advantages of pulsed electric field ablation for COPD: Excellent killing effect on goblet cells. Bioelectrochemistry 2024; 158:108726. [PMID: 38733722 DOI: 10.1016/j.bioelechem.2024.108726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Revised: 05/03/2024] [Accepted: 05/06/2024] [Indexed: 05/13/2024]
Abstract
Mucus hypersecretion resulting from excessive proliferation and metaplasia of goblet cells in the airways is the pathological foundation for Chronic obstructive pulmonary disease (COPD). Clinical trials have confirmed the clinical efficacy of pulsed electric field ablation (PFA) for COPD, but its underlying mechanisms is poorly understood. Cellular and animal models of COPD (rich in goblet cells) were established in this study to detect goblet cells' sensitivity to PFA. Schwan's equation was adopted to calculate the cells' transmembrane potential and the electroporation areas in the cell membrane. We found that goblet cells are more sensitive to low-intensity PFA (250 V/cm-500 V/cm) than BEAS-2B cells. It is attributed to the larger size of goblet cells, which allows a stronger transmembrane potential formation under the same electric field strength. Additionally, the transmembrane potential of larger-sized cells can reach the cell membrane electroporation threshold in more areas. Trypan blue staining confirmed that the cells underwent IRE rate was higher in goblet cells than in BEAS-2B cells. Animal experiments also confirmed that the airway epithelium of COPD is more sensitive to PFA. We conclude that lower-intensity PFA can selectively kill goblet cells in the COPD airway epithelium, ultimately achieving the therapeutic effect of treating COPD.
Collapse
Affiliation(s)
- Haoyang Zhu
- Institute of Regenerative and Reconstructive Medicine, Med-X Institute, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710049, China; Department of Anesthesiology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710049, China; Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Jing Leng
- Institute of Regenerative and Reconstructive Medicine, Med-X Institute, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710049, China; Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Ran Ju
- Institute of Regenerative and Reconstructive Medicine, Med-X Institute, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710049, China; Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Shenao Qu
- Institute of Regenerative and Reconstructive Medicine, Med-X Institute, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710049, China; Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Jiawei Tian
- Institute of Regenerative and Reconstructive Medicine, Med-X Institute, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710049, China; Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China; Department of Hepatobiliary Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Haoze Leng
- Institute of Regenerative and Reconstructive Medicine, Med-X Institute, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710049, China; Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Shiran Tao
- Institute of Regenerative and Reconstructive Medicine, Med-X Institute, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710049, China; Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Chang Liu
- Institute of Regenerative and Reconstructive Medicine, Med-X Institute, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710049, China; Department of Anesthesiology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710049, China; Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Zheng Wu
- Institute of Regenerative and Reconstructive Medicine, Med-X Institute, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710049, China; Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China; Department of Hepatobiliary Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Fenggang Ren
- Institute of Regenerative and Reconstructive Medicine, Med-X Institute, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710049, China; Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China; Department of Hepatobiliary Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Yi Lyu
- Institute of Regenerative and Reconstructive Medicine, Med-X Institute, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710049, China; Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China; Department of Hepatobiliary Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.
| | - Nana Zhang
- Institute of Regenerative and Reconstructive Medicine, Med-X Institute, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710049, China; Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China.
| |
Collapse
|
2
|
Jimenez M, Fernandez JM, Krimsky WS. Pulsed Electric Field (PEF) treatment of progressive non-small cell lung cancer concurrently treated with immune checkpoint blockade: A case report. Respir Med Case Rep 2024; 49:102018. [PMID: 38601720 PMCID: PMC11004978 DOI: 10.1016/j.rmcr.2024.102018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 03/07/2024] [Accepted: 03/23/2024] [Indexed: 04/12/2024] Open
Abstract
Pulsed Electric Field (PEF) energy was delivered at the time of confirmational biopsy to ablate recurrent NSCLC in the right upper lobe (RUL) of the lung after recurrence while on durvalumab consolidation. The patient tolerated the procedure and exhibited stable disease at 6 and 12 months from time of durvalumab discontinuation and PEF treatment, respectively. This report represents the first use of the Aliya™ PEF system as a minimally invasive modality with potential to re-sensitize disease to immune checkpoint blockade (ICB) upon progression. Clinicaltrialsgov identifier NCT04773275.
Collapse
Affiliation(s)
- Marcelo Jimenez
- Salamanca University Hospital, Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
- University of Salamanca, Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
- Instituto de Investigación Biomédica de Salamanca (IBSAL) Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
| | - Jose M. Fernandez
- Salamanca University Hospital, Paseo de San Vicente, 58-182, 37007, Salamanca, Spain
| | - William S. Krimsky
- Galvanize Therapeutics, Inc. 3200 Bridge Parkway Drive, Redwood City, CA, 94065, USA
| |
Collapse
|
3
|
Walkling-Ribeiro M, Jacob T, Ahrné L. Impact of pulsed electric field intensity on the cream separation efficiency from bovine milk and physico-chemical properties of the cream. Food Res Int 2024; 180:114074. [PMID: 38395577 DOI: 10.1016/j.foodres.2024.114074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Revised: 01/25/2024] [Accepted: 01/29/2024] [Indexed: 02/25/2024]
Abstract
Low-temperature (9-12 °C) pulsed electric field (PEF) was investigated in milk before cream separation at different intensities (9-27 kV/cm, 66 μs, 16-28 kJ/L) regarding its potential to render processing more sustainable, retain a high physico-chemical quality, enhance functional properties, and gently modify the structure of the milk fat globule membrane (MFGM). Cream volume per L milk were most efficiently increased by 31 % at the lowest PEF intensity in comparison to untreated milk and cream (P < 0.05). Untreated and PEF-treated milk and obtained cream were assessed with compositional (fat, protein, casein, lactose, and total solids content) and particle size distribution analyses, showing no significant differences (P ≥ 0.05) and, thus, indicating retention of 'native-like' product quality. Overrun and stability of cream, whipped for 20 and 60 s at 15000 rpm using a high-shear mixer, were improved most notably by the lowest and the highest PEF intensities, achieving up to 69 % enlarged overrun and up to 22 % higher stability, respectively (P < 0.05), than in untreated whipped cream. Protein component analyses for milk and cream were carried out by sodium dodecylsulphate-polyacrylamide gel electrophoresis (SDS-PAGE). Noticeable differences between untreated and PEF-treated milk were not observed, but the SDS-PAGE results for cream showed noticeably different bands for some of the protein components, indicating structural changes in MFGM-, whey-, and phospho-proteins due to PEF and/or separator processing effects. More intense bands of xanthine oxidase, xanthine dehydrogenase, butyrophilin, bovine serum albumine, adipophilin (ADPH), and glycoproteins PAS6/7 were observed specifically at 21 kV/cm. Gentle electroporation of both MFGM layers by PEF was determined based on the changes in MFGM monolayer components, such as ADPH and PAS 6/7, exhibiting intensified bands. PEF intensity-dependent impact on the structure of MFGM and casein, leading to a reconfiguration of the cream matrix due to different structuring interactions among proteins, among milk fat globules, and between fat and protein components, was suggested. Overall, low-temperature PEF applied at different intensities showed great potential for gentle, efficient, and functional properties-tailored dairy processing and may also enable effective extraction of highly bioactive ingredients from dairy sources.
Collapse
Affiliation(s)
- Markus Walkling-Ribeiro
- Department of Food Science, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg C, Denmark.
| | - Thomas Jacob
- Department of Food Science, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg C, Denmark; Institut Agro Dijon, 26 Boulevard Dr Petitjean, 21000 Dijon, France
| | - Lilia Ahrné
- Department of Food Science, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg C, Denmark.
| |
Collapse
|
4
|
Ghoshal G. Comprehensive review on pulsed electric field in food preservation: gaps in current studies for potential future research. Heliyon 2023; 9:e17532. [PMID: 37408918 PMCID: PMC10318501 DOI: 10.1016/j.heliyon.2023.e17532] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 06/16/2023] [Accepted: 06/20/2023] [Indexed: 07/07/2023] Open
Abstract
In pulsed electric field (PEF) method sources of high voltage pulses are placed amid two electrodes in to fluid or paste type foods. Electricity is passed between two electrodes to sterilize the food. Almost all PEF technology entails the use of this technology in milk and milk product processing, eggs, poultry, juices and other liquid foods to prevent microorganisms. PEF technology, one of the promising methods of non-thermal preservation of food, can address the biological hazards efficiently. Recently available research papers explored PEF technology not only to facilitate the inactivation of microorganisms but also to alleviate the pressing competence for juice extraction purpose from plants for food application and also to intensify the drying and dehydration process of food. Most of the literatures are available on killing of microorganisms using PEF technology but the reports on influence of PEF technology on quality parameters of food after treatment and about their acceptability are limited. Now the technology is becoming popular and many recent papers reported about better yield and excellent quality of nutrient extracted by using PEF technology.
Collapse
|
5
|
Wang F, Li L, Li X, Hu X, Zhang B. Pulsed electric field promotes the growth metabolism of aerobic denitrifying bacteria Pseudomonas putida W207-14 by improving cell membrane permeability. Environ Technol 2023; 44:2327-2340. [PMID: 35001840 DOI: 10.1080/09593330.2022.2027028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 12/11/2021] [Indexed: 06/04/2023]
Abstract
The purpose of this study was to explore the stimulation mechanism of low pulsed electric field (PEF) strength treatment to promote the growth metabolism of aerobic denitrifying bacteria Pseudomonas putida W207-14. The results indicated that compared with the control group, the strain W207-14 treated with PEF entered the logarithmic growth phase 5 h earlier, the growth time to reached the maximum cell optical density at 600 nm (OD600) of 1.935 ± 0.04 was only 24 h, which shortened by half. With the reduction of growth time, the metabolic rate of the strain increased significantly, in which the removal efficiency of COD, NO3--N and TN was 97.67 ± 1.12%, 90.34 ± 0.73% and 90.13 ± 0.10% in 24 h, respectively. The maximum nitrate removal rate increased from 3.49 mg/L/h to 7.53 mg/L/h. A large number of cells with simultaneous cell membrane damage and high physiological activity were observed by flow cytometry (FCM) in combination with fluorescence staining analysis, which confirmed the reversible electroporation on the cell membrane of strain W207-14 treated with PEF. Transcriptomic analysis indicated that PEF activated the highly significant differential expression of membrane porin (opdB, opdC, and oprB) and cytochrome oxidoreductase related genes (ccoP, ccoN, cioA and cioB) on the cell membrane, which promoted the transport of nutrients through the cell membrane and electron transfer during aerobic respiration and provided an explanation for the possible mechanism of PEF promoting the growth metabolism of strain W207-14 at the micro level. These results lay a foundation for the practical application of PEF enhanced aerobic denitrification technology.
Collapse
Affiliation(s)
- Fan Wang
- School of Resource & Civil Engineering, Northeastern University, Shenyang, People's Republic of China
| | - Liang Li
- School of Resource & Civil Engineering, Northeastern University, Shenyang, People's Republic of China
| | - Xuejie Li
- School of Resource & Civil Engineering, Northeastern University, Shenyang, People's Republic of China
| | - Xiaomin Hu
- School of Resource & Civil Engineering, Northeastern University, Shenyang, People's Republic of China
| | - Bo Zhang
- School of Resource & Civil Engineering, Northeastern University, Shenyang, People's Republic of China
| |
Collapse
|
6
|
Ozkan G, Stübler AS, Aganovic K, Dräger G, Esatbeyoglu T, Capanoglu E. Retention of polyphenols and vitamin C in cranberrybush purée (Viburnum opulus) by means of non-thermal treatments. Food Chem 2021; 360:129918. [PMID: 34051454 DOI: 10.1016/j.foodchem.2021.129918] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 04/07/2021] [Accepted: 04/18/2021] [Indexed: 12/18/2022]
Abstract
The effects of high pressure processing (HPP; 200-600 MPa for 5 or 15 min) and pulsed electric field (PEF; 3 kV/cm, 5-15 kJ/kg) treatment on physicochemical properties (conductivity, pH and total soluble solids content), bioactive compounds (vitamin C, total phenolic (TPC), total flavonoid (TFC), total anthocyanin (TAC) and chlorogenic acid contents), antioxidant capacities (DPPH and CUPRAC assays) and polyphenol oxidase (PPO) activity of cranberrybush purée were evaluated immediately after processing. The results were compared to an untreated purée. According to the results, conductivity increased significantly after PEF (15 kJ/kg) treatment. PEF and HPP treatments resulted in a better retention of bioactive compounds (increase in TPC in the range of ~4-11% and ~10-14% and TFC in the range of ~1-5% and ~6-8% after HPP and PEF, respectively) and antioxidant activity (as measured with CUPRAC method) compared to untreated sample. HPP reduced residual enzyme activity of PPO comparatively better than PEF.
Collapse
Affiliation(s)
- Gulay Ozkan
- Department of Food Engineering, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey; Institute of Food Science and Human Nutrition, Gottfried Wilhelm Leibniz University of Hannover, Am Kleinen Felde 30, 30167 Hannover, Germany
| | - Anna-Sophie Stübler
- German Institute of Food Technologies DIL e.V., Prof.-v.-Klitzing-Str. 7, 49610 Quakenbrück, Germany
| | - Kemal Aganovic
- German Institute of Food Technologies DIL e.V., Prof.-v.-Klitzing-Str. 7, 49610 Quakenbrück, Germany
| | - Gerald Dräger
- Institute of Organic Chemistry, Gottfried Wilhelm Leibniz University of Hannover, Schneiderberg 1b, 30167 Hannover, Germany
| | - Tuba Esatbeyoglu
- Institute of Food Science and Human Nutrition, Gottfried Wilhelm Leibniz University of Hannover, Am Kleinen Felde 30, 30167 Hannover, Germany.
| | - Esra Capanoglu
- Department of Food Engineering, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey.
| |
Collapse
|
7
|
Hwang HJ, Kim HJ, Ko MJ, Chung MS. Recovery of hesperidin and narirutin from waste Citrus unshiu peel using subcritical water extraction aided by pulsed electric field treatment. Food Sci Biotechnol 2021; 30:217-226. [PMID: 33732512 DOI: 10.1007/s10068-020-00862-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 11/25/2020] [Accepted: 12/07/2020] [Indexed: 11/24/2022] Open
Abstract
The objective of this study was to identify whether the efficacy of extracting hesperidin and narirutin from Citrus unshiu peel by-products can be increased by combining pulsed electric field (PEF) and subcritical water extraction (SWE). The samples were treated with a PEF at a strength of 3 kV/cm for 60 and 120 s. Subsequent SWE was conducted at extraction temperatures of 110-190 °C for 3-15 min. The concentration of hesperidin was highest at 46.96 ± 3.37 mg/g peel (dry basis) after PEF treatment at 120 s, combined with SWE at 150 °C for 15 min, while that of narirutin peaked at 8.76 ± 0.83 mg/g after PEF treatment at 120 s, integrated with SWE at 190 °C for 5 min. The concentrations of both hesperidin and narirutin increased with PEF treatment time. The PEF increased the amounts of hesperidin and narirutin extracted by 22.1% and 33.6%, respectively. This study demonstrate the potential of PEF pretreatment for enhancing the SWE of flavonoids from C. unshiu peel.
Collapse
Affiliation(s)
- Hee-Jeong Hwang
- Department of Food Science and Biotechnology, Dongguk University, Goyang, 10326 South Korea
| | - Hui-Ju Kim
- Department of Food Science and Engineering, Ewha Womans University, Seoul, 03760 South Korea
| | - Min-Jung Ko
- Department of Food Science and Biotechnology, Hankyong National University, Anseong, 17579 South Korea
| | - Myong-Soo Chung
- Department of Food Science and Engineering, Ewha Womans University, Seoul, 03760 South Korea
| |
Collapse
|
8
|
Haddad M, Bazinet L, Barbeau B. Eco-efficient treatment of ion exchange spent brine via electrodialysis to recover NaCl and minimize waste disposal. Sci Total Environ 2019; 690:400-409. [PMID: 31302538 DOI: 10.1016/j.scitotenv.2019.06.539] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 06/29/2019] [Accepted: 06/30/2019] [Indexed: 06/10/2023]
Abstract
Natural organic matter (NOM) is removed from potable water for aesthetic, operational and indirect health concerns. NOM removal via ion exchange (IX) resins is receiving increasing attention owing to its simple operation. However, production of a spent brine during IX regeneration is the main drawback due to strict discharge regulations and limited and costly brine management options. In this study, the viability of desalinating the IX brine was assessed via electrodialysis (ED). ED desalination of the IX brine led to the production of highly pure NaCl and NOM-rich solutions which can be used for the IX regeneration and agricultural applications, respectively. Of particular interests were the impacts of the membrane permselectivity and implementation of pulsed electric field (PEF) on membrane fouling, desalination, purity of the NaCl solution and energy consumption. Our results demonstrated that ED desalination with monovalent ion permselective membranes consumed approximately 2 Wh per g of produced NaCl, achieved 88.8% desalination, produced pure NaCl solution with negligible membrane fouling. Furthermore, for the first time, we demonstrated that the PEF-ED intensified the process and decreased membrane fouling only when the conventional ion-exchange membranes were used; while no significant difference was detected when the PEF-ED was operated with the monovalent ion permselective membranes.
Collapse
Affiliation(s)
- Maryam Haddad
- NSERC-Industrial Chair on Drinking Water, Department of Civil, Geological and Mining Engineering (CGM), Polytechnique de Montréal, Canada.
| | - Laurent Bazinet
- NSERC-Industrial Chair on Electromembrane Processes Aiming the Ecoefficiency Improvement of Biofood Production Lines, Department of Food Sciences and Laboratory of Food Processing and ElectroMembrane Processes (LTAPEM), Universite Laval, Canada
| | - Benoit Barbeau
- NSERC-Industrial Chair on Drinking Water, Department of Civil, Geological and Mining Engineering (CGM), Polytechnique de Montréal, Canada
| |
Collapse
|
9
|
Martínez JM, Gojkovic Z, Ferro L, Maza M, Álvarez I, Raso J, Funk C. Use of pulsed electric field permeabilization to extract astaxanthin from the Nordic microalga Haematococcus pluvialis. Bioresour Technol 2019; 289:121694. [PMID: 31254897 DOI: 10.1016/j.biortech.2019.121694] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 06/19/2019] [Accepted: 06/20/2019] [Indexed: 05/28/2023]
Abstract
The Nordic microalgal strain Haematococcus pluvialis was exposed to various stress conditions to induce astaxanthin accumulation. Highest carotenoid content (19.1 mg·g-1dw) was achieved in nitrogen-free culture medium at a high light intensity. The efficiency of Pulsed Electric Field (PEF) pre-treatment of stressed fresh biomass of H. pluvialis followed by incubation in the growth medium was compared to classical disruption methods (bead-beating, freezing-thawing, thermal treatment or ultrasound) for the subsequent extraction of astaxanthin in ethanol. N-starved cells treated with PEF followed by aqueous incubation for 6 h resulted in extraction of 96% (18.3 mgcar·gdw-1) of the total carotenoid content compared to 80% (15.3 mgcar·gdw-1) using other physical methods. The proportion of free forms of astaxanthin was higher in PEF-treated samples compared to mechanical disruption, suggesting PEF triggering an esterase activity. PEF pre-treatment of the cells followed by incubation in growth medium improved astaxanthin extraction in the eco-friendly solvent ethanol.
Collapse
Affiliation(s)
- Juan Manuel Martínez
- Department of Chemistry, Umeå University, 90187 Umeå, Sweden; Food Technology, Facultad de Veterinaria, Instituto Agroalimentario de Aragón-IA2 (Universidad de Zaragoza-CITA), Zaragoza, Spain
| | - Zivan Gojkovic
- Department of Chemistry, Umeå University, 90187 Umeå, Sweden
| | - Lorenza Ferro
- Department of Chemistry, Umeå University, 90187 Umeå, Sweden
| | - Marcos Maza
- Food Technology, Facultad de Veterinaria, Instituto Agroalimentario de Aragón-IA2 (Universidad de Zaragoza-CITA), Zaragoza, Spain
| | - Ignacio Álvarez
- Food Technology, Facultad de Veterinaria, Instituto Agroalimentario de Aragón-IA2 (Universidad de Zaragoza-CITA), Zaragoza, Spain
| | - Javier Raso
- Food Technology, Facultad de Veterinaria, Instituto Agroalimentario de Aragón-IA2 (Universidad de Zaragoza-CITA), Zaragoza, Spain
| | - Christiane Funk
- Department of Chemistry, Umeå University, 90187 Umeå, Sweden.
| |
Collapse
|
10
|
Bensalem S, Lopes F, Bodénès P, Pareau D, Français O, Le Pioufle B. Understanding the mechanisms of lipid extraction from microalga Chlamydomonas reinhardtii after electrical field solicitations and mechanical stress within a microfluidic device. Bioresour Technol 2018; 257:129-136. [PMID: 29494840 DOI: 10.1016/j.biortech.2018.01.139] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 01/29/2018] [Accepted: 01/30/2018] [Indexed: 05/12/2023]
Abstract
One way envisioned to overcome part of the issues biodiesel production encounters today is to develop a simple, economically viable and eco-friendly process for the extraction of lipids from microalgae. This study investigates the lipid extraction efficiency from the microalga Chlamydomonas reinhardtii as well as the underlying mechanisms. We propose a new methodology combining a pulsed electric field (PEF) application and mechanical stresses as a pretreatment to improve lipid extraction with solvents. Cells enriched in lipids are therefore submitted to electric field pulses creating pores on the cell membrane and then subjected to a mechanical stress by applying cyclic pressures on the cell wall (using a microfluidic device). Results showed an increase in lipid extraction when cells were pretreated by the combination of both methods. Microscopic observations showed that both pretreatments affect the cell structure. Finally, the dependency of solvent lipid extraction efficiency with the cell wall structure is discussed.
Collapse
Affiliation(s)
- Sakina Bensalem
- Ecole Normale Supérieure Paris Saclay, CNRS SATIE, Université Paris Saclay, 61 av du Pdt Wilson, 94230 Cachan, France; LGPM, EA 4038, CentraleSupélec, Université Paris Saclay, 3 rue Juliot Curie, 91190 Gif-sur-Yvette, France
| | - Filipa Lopes
- LGPM, EA 4038, CentraleSupélec, Université Paris Saclay, 3 rue Juliot Curie, 91190 Gif-sur-Yvette, France
| | - Pierre Bodénès
- Ecole Normale Supérieure Paris Saclay, CNRS SATIE, Université Paris Saclay, 61 av du Pdt Wilson, 94230 Cachan, France; LGPM, EA 4038, CentraleSupélec, Université Paris Saclay, 3 rue Juliot Curie, 91190 Gif-sur-Yvette, France
| | - Dominique Pareau
- LGPM, EA 4038, CentraleSupélec, Université Paris Saclay, 3 rue Juliot Curie, 91190 Gif-sur-Yvette, France
| | - Olivier Français
- ESIEE-Paris, ESYCOM EA 2552, Université Paris Est, 93160 Noisy Le Grand, France
| | - Bruno Le Pioufle
- Ecole Normale Supérieure Paris Saclay, CNRS SATIE, Université Paris Saclay, 61 av du Pdt Wilson, 94230 Cachan, France.
| |
Collapse
|
11
|
Robin A, Sack M, Israel A, Frey W, Müller G, Golberg A. Deashing macroalgae biomass by pulsed electric field treatment. Bioresour Technol 2018; 255:131-139. [PMID: 29414158 DOI: 10.1016/j.biortech.2018.01.089] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 01/15/2018] [Accepted: 01/19/2018] [Indexed: 06/08/2023]
Abstract
Among all biomass constituents, the ashes are major hurdles for biomass processing. Ashes currently have low market value and can make a non-negligible fraction of the biomass dry weight significantly impacting its further processing by degrading equipment, lowering process yield, inhibiting reactions and decreasing products qualities. However, most of the current treatments for deashing biomass are of poor efficiency or industrial relevance. This work is the first report on the use of Pulsed Electric Field (PEF) to enhance deashing of biomass from a high ash content green marine macroalga, Ulva sp., using hydraulic pressing. By inducing cell permeabilization of the fresh biomass, PEF was able to enhance the ash extraction from 18.4% (non-treated control) to 37.4% of the total ash content in average, significantly enhancing the extraction of five of the major ash elements (K, Mg, Na, P and S) compared to pressing alone.
Collapse
Affiliation(s)
- Arthur Robin
- Porter School of Environmental Studies, Tel Aviv University, Israel
| | - Martin Sack
- Institute for Pulsed Power and Microwave Technology, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Alvaro Israel
- Israel Oceanographic and Limnological Research, The National Institute of Oceanography, Israel
| | - Wolfgang Frey
- Institute for Pulsed Power and Microwave Technology, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Georg Müller
- Institute for Pulsed Power and Microwave Technology, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Alexander Golberg
- Porter School of Environmental Studies, Tel Aviv University, Israel.
| |
Collapse
|
12
|
Vijayalakshmi S, Nadanasabhapathi S, Kumar R, Sunny Kumar S. Effect of pH and pulsed electric field process parameters on the aflatoxin reduction in model system using response surface methodology: Effect of pH and PEF on Aflatoxin Reduction. J Food Sci Technol 2018; 55:868-878. [PMID: 29487428 PMCID: PMC5821640 DOI: 10.1007/s13197-017-2939-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 04/28/2017] [Accepted: 10/18/2017] [Indexed: 10/18/2022]
Abstract
The presence of aflatoxin, a carcinogenic and toxigenic secondary metabolite produced by Aspergillus species, in food matrix has been a major worldwide problem for years now. Food processing methods such as roasting, extrusion, etc. have been employed for effective destruction of aflatoxins, which are known for their thermo-stable nature. The high temperature treatment, adversely affects the nutritive and other quality attributes of the food, leading to the necessity of application of non-thermal processing techniques such as ultrasonication, gamma irradiation, high pressure processing, pulsed electric field (PEF), etc. The present study was focused on analysing the efficacy of the PEF process in the reduction of the toxin content, which was subsequently quantified using HPLC. The process parameters of different pH model system (potato dextrose agar) artificially spiked with aflatoxin mix standard was optimized using the response surface methodology. The optimization of PEF process effects on the responses aflatoxin B1 and total aflatoxin reduction (%) by pH (4-10), pulse width (10-26 µs) and output voltage (20-65%), fitted 2FI model and quadratic model respectively. The response surface plots obtained for the processes were of saddle point type, with the absence of minimum or maximum response at the centre point. The implemented numerical optimization showed that the predicted and actual values were similar, proving the adequacy of the fitted models and also proved the possible application of PEF in toxin reduction.
Collapse
Affiliation(s)
- Subramanian Vijayalakshmi
- Food Engineering and Packaging Division, Defence Food Research Laboratory, Siddhartha Nagar, Mysore, 570011 India
| | - Shanmugam Nadanasabhapathi
- Food Engineering and Packaging Division, Defence Food Research Laboratory, Siddhartha Nagar, Mysore, 570011 India
| | - Ranganathan Kumar
- Food Engineering and Packaging Division, Defence Food Research Laboratory, Siddhartha Nagar, Mysore, 570011 India
| | - S. Sunny Kumar
- Food Engineering and Packaging Division, Defence Food Research Laboratory, Siddhartha Nagar, Mysore, 570011 India
| |
Collapse
|
13
|
Lin S, Liang R, Li X, Xing J, Yuan Y. Effect of pulsed electric field (PEF) on structures and antioxidant activity of soybean source peptides-SHCMN. Food Chem 2016; 213:588-594. [PMID: 27451222 DOI: 10.1016/j.foodchem.2016.07.017] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Revised: 05/11/2016] [Accepted: 07/04/2016] [Indexed: 10/21/2022]
Abstract
Recently, high-intensity pulsed electric field (PEF) has successfully used in improvement of antioxidant activity. Ser-His-Cys-Met-Asn (SHCMN) obtained from soybean protein was chosen to investigate the phenomenon of antioxidant activity improvement. Effects of PEF treatment on antioxidant activity of SHCMN were evaluated by DPPH radical inhibition. Nuclear magnetic resonance (NMR), mid-infrared (MIR), circular dichroism (CD) were used to analyze structures of SHCMN. Two-factor-at-a-time results show that DPPH radical inhibition of SHCMN is significantly (P<0.05) increased to 94.35±0.03% at conditions of electric field intensity of 5kV/cm, pulse frequency of 2400Hz, and retention time of 2h. In addition, MIR and NMR spectra show that the basic structure of peptides SHCMN is stable by PEF treatment. But the secondary structures (α-helix, β-turn, and random coil) can be affected and zeta potential of PEF-treated SHCNM was reduced to 0.59±0.03mV. The antioxidant activity improvement of SHCMN might result from the changes of secondary structures and zeta potential.
Collapse
Affiliation(s)
- Songyi Lin
- College of Food Science and Technology, Jilin University, Changchun 130062, PR China; School of Food Science and Technology, Dalian Polytechnic University, Engineering Research Center of Seafood of Ministry of Education, Dalian 116034, PR China
| | - Rong Liang
- College of Food Science and Technology, Jilin University, Changchun 130062, PR China
| | - Xingfang Li
- College of Food Science and Technology, Jilin University, Changchun 130062, PR China
| | - Jie Xing
- College of Food Science and Technology, Jilin University, Changchun 130062, PR China
| | - Yuan Yuan
- College of Food Science and Technology, Jilin University, Changchun 130062, PR China.
| |
Collapse
|
14
|
Lai YS, Parameswaran P, Li A, Baez M, Rittmann BE. Effects of pulsed electric field treatment on enhancing lipid recovery from the microalga, Scenedesmus. Bioresour Technol 2014; 173:457-461. [PMID: 25311186 DOI: 10.1016/j.biortech.2014.09.124] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 09/23/2014] [Accepted: 09/24/2014] [Indexed: 06/04/2023]
Abstract
Chloroform and methanol are superior solvents for lipid extraction from photosynthetic microorganisms, because they can overcome the resistance offered by the cell walls and membranes, but they are too toxic and expensive to use for large-scale fuel production. Biomass from the photosynthetic microalga Scenedesmus, subjected to a commercially available pre-treatment technology called Focused-Pulsed® (FP), yielded 3.1-fold more crude lipid and fatty acid methyl ester (FAME) after extraction with a range of solvents. FP treatment increased the FAME-to-crude-lipid ratio for all solvents, which means that the extraction of non-lipid materials was minimized, while the FAME profile itself was unchanged compared to the control. FP treatment also made it possible to use only a small proportion of chloroform and methanol, along with isopropanol, to obtain equivalent yields of lipid and FAME as with 100% chloroform plus methanol.
Collapse
Affiliation(s)
- YenJung Sean Lai
- Swette Center for Environmental Biotechnology, The Biodesign Institute at Arizona State University, P.O. Box 875701, Tempe, AZ 85287-5701, USA
| | - Prathap Parameswaran
- Swette Center for Environmental Biotechnology, The Biodesign Institute at Arizona State University, P.O. Box 875701, Tempe, AZ 85287-5701, USA.
| | - Ang Li
- Swette Center for Environmental Biotechnology, The Biodesign Institute at Arizona State University, P.O. Box 875701, Tempe, AZ 85287-5701, USA; State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, People's Republic of China
| | - Maria Baez
- Swette Center for Environmental Biotechnology, The Biodesign Institute at Arizona State University, P.O. Box 875701, Tempe, AZ 85287-5701, USA
| | - Bruce E Rittmann
- Swette Center for Environmental Biotechnology, The Biodesign Institute at Arizona State University, P.O. Box 875701, Tempe, AZ 85287-5701, USA
| |
Collapse
|
15
|
Wang K, Wang Y, Lin S, Liu X, Yang S, Jones GS. Analysis of DPPH inhibition and structure change of corn peptides treated by pulsed electric field technology. J Food Sci Technol 2014; 52:4342-50. [PMID: 26139899 DOI: 10.1007/s13197-014-1450-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 05/04/2014] [Accepted: 06/13/2014] [Indexed: 11/25/2022]
Abstract
In this study, the effects on antioxidant activity and structure change of corn peptides (CPS) with 10 to 30 kDa molecular weight (MW) treated by pulsed electric field (PEF) technology were investigated. 2, 2-diphenyl-1-picrylhydrazyl (DPPH) inhibition was used to evaluate the antioxidant activity of CPS. Response surface methodology (RSM) was used to investigate the effects of PEF treatment parameters on antioxidant activity of CPS. The optimal conditions were as follows: concentration of CPS 10 mg mL(-1), electric field intensity 15 kV cm(-1), and pulse frequency 2,000 Hz. Under the optimized conditions, the DPPH inhibition of CPS increased 32.1 %, compared to the sample untreated. And mid-infrared spectroscopy (MIR) was used for analyzing the structure change of CPS. The results showed that PEF technology could obviously increase the DPPH inhibition of CPS under the optimized conditions (P < 0.05).
Collapse
Affiliation(s)
- Ke Wang
- Laboratory of Nutrition and Functional Food, Jilin University, 5333 Xi'an Road, Changchun, 130062 People's Republic of China
| | - Ying Wang
- Laboratory of Nutrition and Functional Food, Jilin University, 5333 Xi'an Road, Changchun, 130062 People's Republic of China
| | - Songyi Lin
- Laboratory of Nutrition and Functional Food, Jilin University, 5333 Xi'an Road, Changchun, 130062 People's Republic of China
| | - Xuye Liu
- Laboratory of Nutrition and Functional Food, Jilin University, 5333 Xi'an Road, Changchun, 130062 People's Republic of China
| | - Shuailing Yang
- Laboratory of Nutrition and Functional Food, Jilin University, 5333 Xi'an Road, Changchun, 130062 People's Republic of China
| | - Gregory S Jones
- Department of Food, Nutrition and Packaging Sciences, Clemson University, Clemson, SC 29634 USA
| |
Collapse
|