Surface Micro Discharge–Cold Atmospheric Pressure Plasma Processing of Common House Cricket Acheta domesticus Powder: Antimicrobial Potential and Lipid-Quality Preservation
The growing world population and the need to reduce the environmental impact of food production drive the exploration of novel protein sources. Insects are being cultivated, harvested, and processed to be applied in animal and human nutrition. The inherent microbial contamination of insect matrices requires risk management and decontamination strategies. Thermal sterilization results in unfavorable cooking effects and oxidation of fatty acids. The present study demonstrates the risk management in Acheta domesticus (home cricket) powder with a low-energy (8.7–22.0 mW/cm2, 5 min) semi-direct surface micro discharge (SMD)–cold atmospheric pressure plasma (CAPP). At a plasma power density lower than 22 mW/cm2, no degradation of triglycerides (TG) or increased free fatty acids (FFA) content was detected. For mesophilic bacteria, 1.6 ± 0.1 log10 reductions were achieved, and for Enterobacteriaceae, there were close to 1.9 ± 0.2 log10 reductions in a layer of powder. Colonies of Bacillus cereus, Bacillus subtilis, and Bacillus megaterium were identified via the mass spectral fingerprint analyzed with matrix-assisted laser desorption/ionization time of flight (MALDI-TOF) mass spectrometry (MS). The spores of these Bacillus strains resisted to a plasma power density of 22 mW/cm2. Additional inactivation effects at non-thermal, practically non-oxidative conditions are supposed for low-intensity plasma treatments combined with the powder’s fluidization.
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Language: | English |
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Frontiers Media
2021-07-02
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Subjects: | Insect powder, Acheta domesticus, Cold plasma, Microbial decontamination, Lipids, Food safety, Non-thermal processing, |
Online Access: | http://hdl.handle.net/10261/248505 http://dx.doi.org/10.13039/501100000780 |
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dig-iata-es-10261-2485052021-12-27T15:48:00Z Surface Micro Discharge–Cold Atmospheric Pressure Plasma Processing of Common House Cricket Acheta domesticus Powder: Antimicrobial Potential and Lipid-Quality Preservation Pina-Pérez, M. Consuelo Rodrigo Aliaga, Dolores Ellert, Christoph Beyrer, Michael European Commission Ministerio de Ciencia, Innovación y Universidades (España) Insect powder Acheta domesticus Cold plasma Microbial decontamination Lipids Food safety Non-thermal processing The growing world population and the need to reduce the environmental impact of food production drive the exploration of novel protein sources. Insects are being cultivated, harvested, and processed to be applied in animal and human nutrition. The inherent microbial contamination of insect matrices requires risk management and decontamination strategies. Thermal sterilization results in unfavorable cooking effects and oxidation of fatty acids. The present study demonstrates the risk management in Acheta domesticus (home cricket) powder with a low-energy (8.7–22.0 mW/cm2, 5 min) semi-direct surface micro discharge (SMD)–cold atmospheric pressure plasma (CAPP). At a plasma power density lower than 22 mW/cm2, no degradation of triglycerides (TG) or increased free fatty acids (FFA) content was detected. For mesophilic bacteria, 1.6 ± 0.1 log10 reductions were achieved, and for Enterobacteriaceae, there were close to 1.9 ± 0.2 log10 reductions in a layer of powder. Colonies of Bacillus cereus, Bacillus subtilis, and Bacillus megaterium were identified via the mass spectral fingerprint analyzed with matrix-assisted laser desorption/ionization time of flight (MALDI-TOF) mass spectrometry (MS). The spores of these Bacillus strains resisted to a plasma power density of 22 mW/cm2. Additional inactivation effects at non-thermal, practically non-oxidative conditions are supposed for low-intensity plasma treatments combined with the powder’s fluidization. The present research work was carried out with funds provided by the EC under the Research and Innovation Program H2020 MCSA-IFEU 748314. The authors are also grateful to the Spanish Ministry of Science, Innovation and Universities for supporting the project under the reference AGL2017-86840-C2-2-R. Peer reviewed 2021-08-23T05:36:52Z 2021-08-23T05:36:52Z 2021-07-02 artículo http://purl.org/coar/resource_type/c_6501 Frontiers in Bioengineering and Biotechnology 9: 644177 (2021) http://hdl.handle.net/10261/248505 10.3389/fbioe.2021.644177 2296-4185 http://dx.doi.org/10.13039/501100000780 34277580 en #PLACEHOLDER_PARENT_METADATA_VALUE# #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/AGL2017-86840-C2-2-R info:eu-repo/grantAgreement/EC/H2020/748314 Publisher's version https://doi.org/10.3389/fbioe.2021.644177 Sí open Frontiers Media |
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Insect powder Acheta domesticus Cold plasma Microbial decontamination Lipids Food safety Non-thermal processing Insect powder Acheta domesticus Cold plasma Microbial decontamination Lipids Food safety Non-thermal processing |
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Insect powder Acheta domesticus Cold plasma Microbial decontamination Lipids Food safety Non-thermal processing Insect powder Acheta domesticus Cold plasma Microbial decontamination Lipids Food safety Non-thermal processing Pina-Pérez, M. Consuelo Rodrigo Aliaga, Dolores Ellert, Christoph Beyrer, Michael Surface Micro Discharge–Cold Atmospheric Pressure Plasma Processing of Common House Cricket Acheta domesticus Powder: Antimicrobial Potential and Lipid-Quality Preservation |
description |
The growing world population and the need to reduce the environmental impact of food production drive the exploration of novel protein sources. Insects are being cultivated, harvested, and processed to be applied in animal and human nutrition. The inherent microbial contamination of insect matrices requires risk management and decontamination strategies. Thermal sterilization results in unfavorable cooking effects and oxidation of fatty acids. The present study demonstrates the risk management in Acheta domesticus (home cricket) powder with a low-energy (8.7–22.0 mW/cm2, 5 min) semi-direct surface micro discharge (SMD)–cold atmospheric pressure plasma (CAPP). At a plasma power density lower than 22 mW/cm2, no degradation of triglycerides (TG) or increased free fatty acids (FFA) content was detected. For mesophilic bacteria, 1.6 ± 0.1 log10 reductions were achieved, and for Enterobacteriaceae, there were close to 1.9 ± 0.2 log10 reductions in a layer of powder. Colonies of Bacillus cereus, Bacillus subtilis, and Bacillus megaterium were identified via the mass spectral fingerprint analyzed with matrix-assisted laser desorption/ionization time of flight (MALDI-TOF) mass spectrometry (MS). The spores of these Bacillus strains resisted to a plasma power density of 22 mW/cm2. Additional inactivation effects at non-thermal, practically non-oxidative conditions are supposed for low-intensity plasma treatments combined with the powder’s fluidization. |
author2 |
European Commission |
author_facet |
European Commission Pina-Pérez, M. Consuelo Rodrigo Aliaga, Dolores Ellert, Christoph Beyrer, Michael |
format |
artículo |
topic_facet |
Insect powder Acheta domesticus Cold plasma Microbial decontamination Lipids Food safety Non-thermal processing |
author |
Pina-Pérez, M. Consuelo Rodrigo Aliaga, Dolores Ellert, Christoph Beyrer, Michael |
author_sort |
Pina-Pérez, M. Consuelo |
title |
Surface Micro Discharge–Cold Atmospheric Pressure Plasma Processing of Common House Cricket Acheta domesticus Powder: Antimicrobial Potential and Lipid-Quality Preservation |
title_short |
Surface Micro Discharge–Cold Atmospheric Pressure Plasma Processing of Common House Cricket Acheta domesticus Powder: Antimicrobial Potential and Lipid-Quality Preservation |
title_full |
Surface Micro Discharge–Cold Atmospheric Pressure Plasma Processing of Common House Cricket Acheta domesticus Powder: Antimicrobial Potential and Lipid-Quality Preservation |
title_fullStr |
Surface Micro Discharge–Cold Atmospheric Pressure Plasma Processing of Common House Cricket Acheta domesticus Powder: Antimicrobial Potential and Lipid-Quality Preservation |
title_full_unstemmed |
Surface Micro Discharge–Cold Atmospheric Pressure Plasma Processing of Common House Cricket Acheta domesticus Powder: Antimicrobial Potential and Lipid-Quality Preservation |
title_sort |
surface micro discharge–cold atmospheric pressure plasma processing of common house cricket acheta domesticus powder: antimicrobial potential and lipid-quality preservation |
publisher |
Frontiers Media |
publishDate |
2021-07-02 |
url |
http://hdl.handle.net/10261/248505 http://dx.doi.org/10.13039/501100000780 |
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