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Rossi G, Ojha S, Müller-Belecke A, Schlüter OK. Fresh aquaculture sludge management with black soldier fly (Hermetia illucens L.) larvae: investigation on bioconversion performances. Sci Rep 2023; 13:20982. [PMID: 38017013 PMCID: PMC10684894 DOI: 10.1038/s41598-023-48061-0] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 11/22/2023] [Indexed: 11/30/2023] Open
Abstract
Aquaculture solid waste (ASW) is a nutrient rich material that can pose a significant environment challenge if not properly managed. This study investigated the potential of black soldier fly (BSF) larvae in converting this waste into biomass. Five substrates comprising chicken feed supplemented with varying proportions of fresh ASW (0%, 25%, 50%, 75%, 100%) were formulated and evaluated for larval growth and waste bioconversion efficiency. High nutrients retention (N: 23.25 ± 1.40%; C: 21.94 ± 0.99%; S: 12.20 ± 1.33%) and feed conversion ratio (1.78 ± 0.08) were detected on substrate 100ASW, although the limited feeding rate (114.54 ± 5.38 mg dry substrate/larvae) and the high amount of indigestible fibres (ADF = 15.87 ± 0.24%; ADL = 6.36 ± 0.17%) were translated to low larval growth (final larval average weight: 66.17 ± 1.81 mg). Decreasing ASW content resulted in reduced fibres and ash, increase in non-fibrous carbohydrates and C/N ratio, and improved larval growth and substrate utilization. However, high larval metabolic activity suggested higher nutrients loss to the environment. Substrate 75ASW demonstrated the best performances in terms of larval production (final larval average weight: 176.30 ± 12.12 mg), waste reduction (substrate reduction corrected by percentage of ASW: 26.76 ± 0.86%) and nutrients assimilation (N: 22.14 ± 1.14%; C: 15.29 ± 0.82%; S: 15.40 ± 0.99%). This substrate closely aligned with optimal BSF rearing substrates reported in literature. Overall, this study highlights the potential of BSF larvae in managing fresh ASW, offering a dual benefit of waste reduction and insect biomass production.
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Affiliation(s)
- Giacomo Rossi
- Department of Systems Process Engineering, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Max-Eyth-Allee 100, 14469, Potsdam, Germany
| | - Shikha Ojha
- Department of Systems Process Engineering, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Max-Eyth-Allee 100, 14469, Potsdam, Germany
- Department of Land Sciences, School of Science and Computing, South East Technological University, Cork Road, Waterford, X91 K0EK, Ireland
| | | | - Oliver K Schlüter
- Department of Systems Process Engineering, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Max-Eyth-Allee 100, 14469, Potsdam, Germany.
- Department of Agricultural and Food Sciences, University of Bologna, Piazza Goidanich 60, 47521, Cesena, Italy.
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Psarianos M, Ojha S, Schlüter OK. Evaluating an emerging technology-based biorefinery for edible house crickets. Front Nutr 2023; 10:1185612. [PMID: 37533573 PMCID: PMC10390837 DOI: 10.3389/fnut.2023.1185612] [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: 03/13/2023] [Accepted: 06/12/2023] [Indexed: 08/04/2023] Open
Abstract
Introduction Edible insects, specifically house crickets, are expected to play an important role in the future food systems due to their rich nutritional profile, low environmental impact and growing consumer acceptance as food. Their content of proteins, lipids, chitin and phenolics offer great potential for the valorization of their biomass into nutritional end products and fractions. Furthermore, emerging food processing technologies and green solvents are relevant for improving the valorization process. Materials and methods High pressure (HP) and ultrasound (US) processing were implemented in an insect biorefinery system, where a hexane/methanol/water solvent was used to separate fat, phenolics and a solid fraction containing proteins and chitin. Subsequently, a deep eutectic solvent of betaine and urea (B/U) was used to for protein and chitin isolation. Results A maximum of 15% of fat was isolated, with no positive effect from the US or HP treatments. The US treatment enhanced the phenolic extraction yield by 38.69%, while HP negatively affected the antioxidant capacity. B/U was efficient in separating proteins and chitin, resulting in a protein concentrate with a protein content ≥80% and a chitinous fraction with a chitin content ≥70%. Conclusion House cricket biomass can be refined into valuable fractions with a quick and simple method, making the process industrially relevant.
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Affiliation(s)
- Marios Psarianos
- Horticultural Engineering, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Potsdam, Germany
| | - Shikha Ojha
- Horticultural Engineering, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Potsdam, Germany
| | - Oliver K. Schlüter
- Horticultural Engineering, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Potsdam, Germany
- Department of Agricultural and Food Sciences, University of Bologna, Cesena, Italy
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Fricke A, Psarianos M, Sabban J, Fitzner M, Reipsch R, Schlüter OK, Dreyer C, Vogt JHM, Schreiner M, Baldermann S. Composite materials for innovative urban farming of alternative food sources (macroalgae and crickets). Front Sustain Food Syst 2022. [DOI: 10.3389/fsufs.2022.1001769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Facing an inexorable growth of the human population along with substantial environmental changes, the assurance of food security is a major challenge of the present century. To ensure responsible food consumption and production (SDG 12), new approaches in the food system are required. Thus, environmentally controlled, sustainable production of alternative food sources are of key interest for both urban agriculture and food research. To face the current challenge of integrating food production systems within existing structures, multidisciplinary discourses are required. Here, we bring together novel technologies and indoor farming techniques with the aim of supporting the development of sustainable food production systems. For this purpose, we investigated the feasibility of 10 composite materials for their innovative use as structural support in macroalgal cultivation (settlement substrates) and cricket rearing (housing). Considering material resistance, rigidity, and direct material-organism interactions, the bio-based composite polylactic acid (PLA) was identified as a suitable material for joint farming. For macroalgae cultivation, PLA sustained the corrosive cultivation conditions and provided a suitable substrate without affecting the macroalgal physiology or nutritional composition (carotenoids and chlorophylls). For cricket rearing, PLA provided a suitable and recyclable shelter, which was quickly accepted by the animals without any observed harm. In contrast, other common composite components like phenolic resin or aramid were found to be unsuitable due to being harmful for the cultivated organisms or instable toward the applied sterilization procedure. This multidisciplinary study not only provides profound insights in the developing field of urban indoor food production from a new perspective, but also bridges material science and farming approaches to develop new sustainable and resilient food production systems.
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Psarianos M, Ojha S, Schneider R, Schlüter OK. Chitin Isolation and Chitosan Production from House Crickets ( Acheta domesticus) by Environmentally Friendly Methods. Molecules 2022; 27:molecules27155005. [PMID: 35956955 PMCID: PMC9370203 DOI: 10.3390/molecules27155005] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 08/01/2022] [Accepted: 08/03/2022] [Indexed: 11/26/2022] Open
Abstract
Alternative methods were evaluated for chitin isolation from Acheta domesticus. Chemical demineralization was compared to fermentation with Lactococcus lactis, citric acid treatment, and microwave treatment, leading to a degree of demineralization of 91.1 ± 0.3, 97.3 ± 0.8, 70.5 ± 3.5, and 85.8 ± 1.3%, respectively. Fermentation with Bacillus subtilis, a deep eutectic solvent, and enzymatic digestion were tested for chitin isolation, generating materials with less than half the chitin content when compared to alkaline deproteinization. Chitosan was produced on a large scale by deacetylation of the chitinous material obtained from two selected processes: the chemical treatment and an alternative process combining L. lactis fermentation with bromelain deproteinization. The chemical and alternative processes resulted in similar chitosan content (81.9 and 88.0%), antioxidant activity (59 and 49%), and degree of deacetylation (66.6 and 62.9%), respectively. The chitosan products had comparable physical properties. Therefore, the alternative process is appropriate to replace the chemical process of chitin isolation for industrial applications.
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Affiliation(s)
- Marios Psarianos
- Quality and Safety of Food and Feed, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Max-Eyth-Allee 100, 14469 Potsdam, Germany
| | - Shikha Ojha
- Quality and Safety of Food and Feed, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Max-Eyth-Allee 100, 14469 Potsdam, Germany
- Correspondence: ; Tel.: +49-(0)-331-5699-616
| | - Roland Schneider
- Department of Bioengineering, Leibniz-Institute for Agricultural Engineering and Bioeconomy (ATB), 14469 Potsdam, Germany
| | - Oliver K. Schlüter
- Quality and Safety of Food and Feed, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Max-Eyth-Allee 100, 14469 Potsdam, Germany
- Department of Agricultural and Food Sciences, University of Bologna, Piazza Goidanich 60, 47521 Cesena, Italy
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Psarianos M, Dimopoulos G, Ojha S, Cavini ACM, Bußler S, Taoukis P, Schlüter OK. Effect of pulsed electric fields on cricket (Acheta domesticus) flour: Extraction yield (protein, fat and chitin) and techno-functional properties. INNOV FOOD SCI EMERG 2022. [DOI: 10.1016/j.ifset.2021.102908] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Song X, Bredahl L, Diaz Navarro M, Pendenza P, Stojacic I, Mincione S, Pellegrini G, Schlüter OK, Torrieri E, Di Monaco R, Giacalone D. Factors affecting consumer choice of novel non-thermally processed fruit and vegetables products: Evidence from a 4-country study in Europe. Food Res Int 2022; 153:110975. [DOI: 10.1016/j.foodres.2022.110975] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 01/28/2022] [Accepted: 01/29/2022] [Indexed: 12/27/2022]
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Rossi G, Durek J, Ojha S, Schlüter OK. Fluorescence-based characterisation of selected edible insect species: Excitation emission matrix (EEM) and parallel factor (PARAFAC) analysis. Curr Res Food Sci 2021; 4:862-872. [PMID: 34917946 PMCID: PMC8646056 DOI: 10.1016/j.crfs.2021.11.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 11/08/2021] [Indexed: 12/01/2022] Open
Abstract
Fluorescence spectroscopy coupled with chemometric tools is a powerful analytical method, largely used for rapid food quality and safety evaluations. However, its potential has not yet been explored in the novel food sector. In the present study, excitation emission matrices (EEMs) of 15 insect powders produced by milling insects belonging to 5 Orthoptera species (Acheta domesticus, Gryllus assimilis, Gryllus bimaculatus, Locusta migratoria, Schistocerca gregaria) from 3 different origins were investigated. Parallel factor (PARAFAC) analysis performed on the overall averaged dataset was validated for five components, highlighting the presence of five different fluorescence peaks. The presence of these peaks was confirmed on each species, suggesting that fluorescence compounds of edible insects are the same in several species. PARAFAC analysis performed on the overall averaged dataset after alternatively adding the EEM recorded from one standard compound allowed to speculate that edible insects fluorescence raises from mixtures of: tryptophan + tyrosine (PARAFAC component-1), tryptophan + tyrosine + tocopherol (PARAFAC component-2), collagen + pyridoxine + pterins (PARAFAC component-3). This study suggests that fluorescence spectroscopy may represent a powerful method for investigating composition and quality of insect-based foods. Fluorescence landscape of edible insects comprises of 5 different peaks. Similar fluorescence compounds are present among several Orthoptera species. Fluorescence peaks of edible insects result from several chemical molecules. Fluorescence intensity of edible insects depends on their species and origin.
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Affiliation(s)
- G Rossi
- Quality and Safety of Food and Feed, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Max-Eyth-Allee 100, 14469, Potsdam, Germany
| | - J Durek
- Quality and Safety of Food and Feed, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Max-Eyth-Allee 100, 14469, Potsdam, Germany
| | - S Ojha
- Quality and Safety of Food and Feed, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Max-Eyth-Allee 100, 14469, Potsdam, Germany
| | - O K Schlüter
- Quality and Safety of Food and Feed, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Max-Eyth-Allee 100, 14469, Potsdam, Germany.,Department of Agricultural and Food Sciences, University of Bologna, Piazza Goidanich 60, 47521, Cesena, Italy
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8
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Si Y, Khanal BP, Schlüter OK, Knoche M. Direct Evidence for a Radial Gradient in Age of the Apple Fruit Cuticle. Front Plant Sci 2021; 12:730837. [PMID: 34745165 PMCID: PMC8567170 DOI: 10.3389/fpls.2021.730837] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 09/21/2021] [Indexed: 05/29/2023]
Abstract
The pattern of cuticle deposition plays an important role in managing strain buildup in fruit cuticles. Cuticular strain is the primary trigger for numerous fruit-surface disorders in many fruit crop species. Recent evidence indicates a strain gradient may exist within the apple fruit cuticle. The outer layers of the cuticle are more strained and thus more susceptible to microcracking than the inner layers. A radial gradient in cuticle age is the most likely explanation. Our study aimed to establish whether (or not) deposition of new cutin in a developing apple fruit occurs on the inner surface of the cuticle, i.e., immediately abutting the outward-facing epidermal cell wall. Developing apples were fed with 13C oleic acid through the skin. Following a 14-d period for incorporation, the fruit was harvested and the cuticular membranes (CMs) isolated enzymatically. The CMs were then ablated to varying extents from the inner or the outer surfaces, using a cold atmospheric pressure plasma (CAPP). Afterwards, the ablated CMs were dewaxed and the 13C contents were determined by mass spectrometry. The incorporation of 13C in the cutin fraction was higher than in the wax fraction. The 13C content was highest in non-ablated, dewaxed CM (DCM) and decreased as ablation depth from the inner surface increased. There was no change in 13C content when ablation was carried out from the outer surface. As fruit development proceeded, more 13C label was found towards the middle of the DCM. These results offered direct evidence for deposition of cutin being on the inner surface of the cuticle, resulting in a radial gradient in cuticular age-the most recent deposition (youngest) being on the inner cuticle surface (abutting the epidermal cell wall) and the earliest deposition (oldest) being on the outer surface (abutting the atmosphere).
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Affiliation(s)
- Yiru Si
- Fruit Science Section, Institute of Horticultural Production Systems, Leibniz University Hannover, Hannover, Germany
| | - Bishnu P. Khanal
- Fruit Science Section, Institute of Horticultural Production Systems, Leibniz University Hannover, Hannover, Germany
| | - Oliver K. Schlüter
- Department of Horticultural Engineering, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Potsdam, Germany
| | - Moritz Knoche
- Fruit Science Section, Institute of Horticultural Production Systems, Leibniz University Hannover, Hannover, Germany
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10
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Shumo M, Khamis FM, Ombura FL, Tanga CM, Fiaboe KKM, Subramanian S, Ekesi S, Schlüter OK, van Huis A, Borgemeister C. A Molecular Survey of Bacterial Species in the Guts of Black Soldier Fly Larvae ( Hermetia illucens) Reared on Two Urban Organic Waste Streams in Kenya. Front Microbiol 2021; 12:687103. [PMID: 34630342 PMCID: PMC8493336 DOI: 10.3389/fmicb.2021.687103] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 08/13/2021] [Indexed: 11/28/2022] Open
Abstract
Globally, the expansion of livestock and fisheries production is severely constrained due to the increasing costs and ecological footprint of feed constituents. The utilization of black soldier fly (BSF) as an alternative protein ingredient to fishmeal and soybean in animal feed has been widely documented. The black soldier fly larvae (BSFL) used are known to voraciously feed and grow in contaminated organic wastes. Thus, several concerns about their safety for inclusion into animal feed remain largely unaddressed. This study evaluated both culture-dependent sequence-based and 16S rDNA amplification analysis to isolate and identify bacterial species associated with BSFL fed on chicken manure (CM) and kitchen waste (KW). The bacteria species from the CM and KW were also isolated and investigated. Results from the culture-dependent isolation strategies revealed that Providencia sp. was the most dominant bacterial species detected from the guts of BSFL reared on CM and KW. Morganella sp. and Brevibacterium sp. were detected in CM, while Staphylococcus sp. and Bordetella sp. were specific to KW. However, metagenomic studies showed that Providencia and Bordetella were the dominant genera observed in BSFL gut and processed waste substrates. Pseudomonas and Comamonas were recorded in the raw waste substrates. The diversity of bacterial genera recorded from the fresh rearing substrates was significantly higher compared to the diversity observed in the gut of the BSFL and BSF frass (leftovers of the rearing substrates). These findings demonstrate that the presence and abundance of microbiota in BSFL and their associated waste vary considerably. However, the presence of clinically pathogenic strains of bacteria in the gut of BSFL fed both substrates highlight the biosafety risk of potential vertical transmission that might occur, if appropriate pre-and-postharvest measures are not enforced.
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Affiliation(s)
- Marwa Shumo
- Leibniz-Institute for Agricultural Engineering Potsdam-Bornim (ATB), Potsdam, Germany
- Department of Ecology and Natural Resources Management, Center for Development Research (ZEF), Bonn, Germany
- Plant Health Unit, International Centre of Insect Physiology and Ecology (ICIPE), Nairobi, Kenya
- Hermetia Baruth GmbH, Insect Technology Center (ITC), Berlin, Germany
| | - Fathiya M. Khamis
- Plant Health Unit, International Centre of Insect Physiology and Ecology (ICIPE), Nairobi, Kenya
| | - Fidelis Levi Ombura
- Plant Health Unit, International Centre of Insect Physiology and Ecology (ICIPE), Nairobi, Kenya
| | - Chrysantus M. Tanga
- Plant Health Unit, International Centre of Insect Physiology and Ecology (ICIPE), Nairobi, Kenya
| | - Komi K. M. Fiaboe
- Plant Health Unit, International Centre of Insect Physiology and Ecology (ICIPE), Nairobi, Kenya
- IPM Department, The International Institute of Tropical Agriculture, Yaoundé, Cameroon
| | - Sevgan Subramanian
- Plant Health Unit, International Centre of Insect Physiology and Ecology (ICIPE), Nairobi, Kenya
| | - Sunday Ekesi
- Plant Health Unit, International Centre of Insect Physiology and Ecology (ICIPE), Nairobi, Kenya
| | - Oliver K. Schlüter
- Leibniz-Institute for Agricultural Engineering Potsdam-Bornim (ATB), Potsdam, Germany
| | - Arnold van Huis
- Laboratory of Entomology, Wageningen University & Research, Wageningen, Netherlands
| | - Christian Borgemeister
- Department of Ecology and Natural Resources Management, Center for Development Research (ZEF), Bonn, Germany
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11
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Ojha S, Bußler S, Schlüter OK. Food waste valorisation and circular economy concepts in insect production and processing. Waste Manag 2020; 118:600-609. [PMID: 33010691 DOI: 10.1016/j.wasman.2020.09.010] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [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: 04/24/2020] [Revised: 08/16/2020] [Accepted: 09/04/2020] [Indexed: 06/11/2023]
Abstract
Food loss and waste are serious threats to the sustainability of our food systems. Innovative and multi-faced solutions are continuously being proposed, tested and implemented by researchers, government authorities, non-government bodies and food industries to tackle this problem of food waste. Insect-based bioconversions have been reported as a marketable solution for reducing food waste. This rather novel approach can efficiently convert several tonnes of food waste into valuable products including human food, animal feed, fertiliser and other secondary industrial compounds. This paper couples the production of edible insects with the valorisation of food waste, providing an attractive key for closing the loop of food value chain. Current status of insect processing and their importance in circular economy is also discussed in detail.
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Affiliation(s)
- Shikha Ojha
- Quality and Safety of Food and Feed, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), 14469 Potsdam, Germany
| | - Sara Bußler
- Quality and Safety of Food and Feed, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), 14469 Potsdam, Germany
| | - Oliver K Schlüter
- Quality and Safety of Food and Feed, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), 14469 Potsdam, Germany.
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Bakalis S, Valdramidis VP, Argyropoulos D, Ahrne L, Chen J, Cullen P, Cummins E, Datta AK, Emmanouilidis C, Foster T, Fryer PJ, Gouseti O, Hospido A, Knoerzer K, LeBail A, Marangoni AG, Rao P, Schlüter OK, Taoukis P, Xanthakis E, Van Impe JF. Perspectives from CO+RE: How COVID-19 changed our food systems and food security paradigms. Curr Res Food Sci 2020; 3:166-172. [PMID: 32908972 PMCID: PMC7265867 DOI: 10.1016/j.crfs.2020.05.003] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Image 1.
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Affiliation(s)
- Serafim Bakalis
- University of Nottingham, Future Foods Beacon of Ecxellence and the Department of Chemical and Environmental Engineering, Nottingham, UK
- University of Birmingham, Centre for Formulation Engineering, School of Chemical Engineering, Birmingham, UK
| | - Vasilis P. Valdramidis
- University of Malta, Department of Food Sciences and Nutrition, Faculty of Health Sciences, Msida, Malta
| | | | - Lilia Ahrne
- University of Copenhagen, Department of Food Science, Copenhagen, Denmark
| | - Jianshe Chen
- Zhejiang Gongshang University, School of Food Science and Biotechnology, Hangzhou, Zhejiang, China
| | - P.J. Cullen
- The University of Sydney, School of Chemical and Biomolecular Engineering, Sydney, Australia
| | - Enda Cummins
- University College Dublin, School of Biosystems and Food Engineering, Dublin , Ireland
| | - Ashim K. Datta
- Cornell University, Biological & Environmental Engineering, Ithaca, USA
| | | | - Tim Foster
- University of Nottingham, School of Biosciences, Nottingham, UK
| | - Peter J. Fryer
- University of Birmingham, Centre for Formulation Engineering, School of Chemical Engineering, Birmingham, UK
| | - Ourania Gouseti
- University of Nottingham, Future Foods Beacon of Ecxellence and the Department of Chemical and Environmental Engineering, Nottingham, UK
| | - Almudena Hospido
- University of Santiago de Compostela, CRETUS Institute, Department of Chemical Engineering, Santiago de Compostela, Spain
| | - Kai Knoerzer
- Agriculture and Food, CSIRO, Werribee, Australia
| | | | | | - Pingfan Rao
- Zhejiang Gongshang University, School of Food Science and Biotechnology, Hangzhou, Zhejiang, China
| | - Oliver K. Schlüter
- Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Quality and Safety of Food and Feed, Potsdam, Germany
| | - Petros Taoukis
- National Technical University of Athens, School of Chemical Engineering, Athens, Greece
| | | | - Jan F.M. Van Impe
- Katholieke Universiteit Leuven, Department of Chemical Engineering, BioTeC - Chemical & Biochemical Process Technology & Control, Gent, Belgium
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Bußler S, Rawel HM, Schlüter OK. Impact of plasma processed air (PPA) on phenolic model systems: Suggested mechanisms and relevance for food applications. INNOV FOOD SCI EMERG 2020. [DOI: 10.1016/j.ifset.2020.102432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Fröhling A, Bußler S, Durek J, Schlüter OK. Thermal Impact on the Culturable Microbial Diversity Along the Processing Chain of Flour From Crickets ( Acheta domesticus). Front Microbiol 2020; 11:884. [PMID: 32523562 PMCID: PMC7261824 DOI: 10.3389/fmicb.2020.00884] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 04/16/2020] [Indexed: 11/17/2022] Open
Abstract
The role of insects for human consumption has lately increased in interest and in order to deliver safe and high-quality raw materials and ingredients for food and feed applications, processing of insects is a major pre-requisite. For edible insects a thermal treatment and appropriate storage conditions are recommended to minimize the microbiological risk and the impact of processing methods on the microbial contamination needs to be considered and determined. Based on standard process conditions for the production of Acheta domesticus flour, different heating treatments were used to reduce the microbial load of A. domesticus. In addition, the drying temperature and drying time were varied to determine whether the required residual moisture of <5% can be achieved more quickly with consistent microbial quality. The influence of the process conditions on the microbial community of A. domesticus along the processing chain was finally investigated under optimized process conditions. The total viable count was reduced from 9.24 log10 CFU/gDM to 1.98 log10 CFU/gDM along the entire processing chain. While Bacillaceae, Enterobacteriaceae, Enterococcaceae, and yeast and molds were no longer detectable in the A. domesticus flour, Staphylococcaceae and mesophilic spore forming bacteria were still found in the flour. The results indicate that the steaming process is essential for effectively increasing microbial safety since this processing step showed the highest inactivation. It is recommended to not only evaluate the total viable count but also to monitor changes in microbial diversity during processing to ensure microbial safety of the final product.
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Affiliation(s)
- Antje Fröhling
- Quality and Safety of Food and Feed, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Potsdam, Germany
| | - Sara Bußler
- Quality and Safety of Food and Feed, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Potsdam, Germany
- Food4Future, Leibniz Institute of Vegetable and Ornamental Crops (IGZ), Großbeeren, Germany
| | - Julia Durek
- Quality and Safety of Food and Feed, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Potsdam, Germany
| | - Oliver K. Schlüter
- Quality and Safety of Food and Feed, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Potsdam, Germany
- Food4Future, Leibniz Institute of Vegetable and Ornamental Crops (IGZ), Großbeeren, Germany
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Bußler S, Ehlbeck J, Schlüter OK. Pre-drying treatment of plant related tissues using plasma processed air: Impact on enzyme activity and quality attributes of cut apple and potato. INNOV FOOD SCI EMERG 2017. [DOI: 10.1016/j.ifset.2016.05.007] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Bußler S, Rumpold BA, Fröhling A, Jander E, Rawel HM, Schlüter OK. Cold atmospheric pressure plasma processing of insect flour from Tenebrio molitor: Impact on microbial load and quality attributes in comparison to dry heat treatment. INNOV FOOD SCI EMERG 2016. [DOI: 10.1016/j.ifset.2016.07.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Abstract
Insects, a traditional food in many parts of the world, are highly nutritious and especially rich in proteins and thus represent a potential food and protein source. A compilation of 236 nutrient compositions in addition to amino acid spectra and fatty acid compositions as well as mineral and vitamin contents of various edible insects as derived from literature is given and the risks and benefits of entomophagy are discussed. Although the data were subject to a large variation, it could be concluded that many edible insects provide satisfactorily with energy and protein, meet amino acid requirements for humans, are high in MUFA and/or PUFA, and rich in several micronutrients such as copper, iron, magnesium, manganese, phosphorous, selenium, and zinc as well as riboflavin, pantothenic acid, biotin, and in some cases folic acid. Liabilities of entomophagy include the possible content of allergenic and toxic substances as well as antinutrients and the presence of pathogens. More data are required for a thorough assessment of the nutritional potential of edible insects and proper processing and decontamination methods have to be developed to ensure food safety.
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Affiliation(s)
- Birgit A Rumpold
- Department of Horticultural Engineering, Quality and Safety of Food and Feed, Leibniz Institute for Agricultural Engineering Potsdam-Bornim, Potsdam, Germany
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Rumpold BA, Schlüter OK. Nutritional composition and safety aspects of edible insects. Mol Nutr Food Res 2013; 57:802-23. [PMID: 23471778 DOI: 10.1002/mnfr.201200735] [Citation(s) in RCA: 598] [Impact Index Per Article: 54.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Revised: 12/15/2012] [Accepted: 12/19/2012] [Indexed: 11/06/2022]
Abstract
Insects, a traditional food in many parts of the world, are highly nutritious and especially rich in proteins and thus represent a potential food and protein source. A compilation of 236 nutrient compositions in addition to amino acid spectra and fatty acid compositions as well as mineral and vitamin contents of various edible insects as derived from literature is given and the risks and benefits of entomophagy are discussed. Although the data were subject to a large variation, it could be concluded that many edible insects provide satisfactorily with energy and protein, meet amino acid requirements for humans, are high in MUFA and/or PUFA, and rich in several micronutrients such as copper, iron, magnesium, manganese, phosphorous, selenium, and zinc as well as riboflavin, pantothenic acid, biotin, and in some cases folic acid. Liabilities of entomophagy include the possible content of allergenic and toxic substances as well as antinutrients and the presence of pathogens. More data are required for a thorough assessment of the nutritional potential of edible insects and proper processing and decontamination methods have to be developed to ensure food safety.
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Affiliation(s)
- Birgit A Rumpold
- Department of Horticultural Engineering, Quality and Safety of Food and Feed, Leibniz Institute for Agricultural Engineering Potsdam-Bornim, Potsdam, Germany
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