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Belghit I, Liland NS, Lundebye AK, Tibon J, Sindre H, Nilsen H, Hagemann A, Sele V. Aquaculture sludge as feed for black soldier fly: Transfer of chemical and biological contaminants and nutrients. WASTE MANAGEMENT (NEW YORK, N.Y.) 2024; 187:39-49. [PMID: 38991389 DOI: 10.1016/j.wasman.2024.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 06/06/2024] [Accepted: 07/04/2024] [Indexed: 07/13/2024]
Abstract
Aquaculture sludge (uneaten feed and faeces) is nutrient rich and has potential as feed for insects. The aim of this study was to investigate the transfer of chemical and biological contaminants, as well as nutrients, from aquaculture sludge to black soldier fly larvae. The larvae were reared on a sludge mixture made of different sludges collected from Norwegian freshwater salmonid facilities. The sludge was spiked with four common salmon pathogens: Infectious Pancreatic Necrosis Virus, Infectious Salmon Anemia virus, Yersinia ruckeri or Mycobacterium salmoniphilum. During the 15 days of growth on sludge, the black soldier fly larvae accumulated valuable nutrients including protein, fat, eicosapentaenoic acid, iron, manganese, zinc and selenium. The larvae also accumulated undesirable substances including cadmium, mercury, dioxins and polychlorinated biphenyls. The concentrations of dioxins exceeded the EU maximum level set for animal feed. None of the salmon pathogens that were spiked to the sludge were detected in the black soldier fly larvae. This study reports low risk of transfer of salmon pathogens from sludge to insect larvae, and showed that the transfer of heavy metals, minerals and metalloids are in accordance with earlier studies. The large variations in levels of heavy metals between batches of sludge can cause levels in BSF exceeding the EU maximum levels, and thus indicate a need for monitoring of the proposed value chain. The transfer of dioxins from sludge to insects, reported for the first time in this paper, would be of special interest for future research, with special focus on risk mitigation.
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Affiliation(s)
- Ikram Belghit
- Institute of Marine Research, P. O. Box 1870 Nordnes, 5817 Bergen, Norway.
| | - Nina S Liland
- Institute of Marine Research, P. O. Box 1870 Nordnes, 5817 Bergen, Norway.
| | | | - Jojo Tibon
- Institute of Marine Research, P. O. Box 1870 Nordnes, 5817 Bergen, Norway.
| | | | - Hanne Nilsen
- Norwegian Veterinary Institute, PO Box 1263 Sentrum, 5811 Bergen, Norway.
| | - Andreas Hagemann
- Department of Fisheries and New BioMarin Industry, SINTEF Ocean, Trondheim, Norway.
| | - Veronika Sele
- Institute of Marine Research, P. O. Box 1870 Nordnes, 5817 Bergen, Norway.
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2
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Perez-Santaescolastica C, de Pril I, van de Voorde I, Fraeye I. Fatty Acid and Amino Acid Profiles of Seven Edible Insects: Focus on Lipid Class Composition and Protein Conversion Factors. Foods 2023; 12:4090. [PMID: 38002148 PMCID: PMC10670213 DOI: 10.3390/foods12224090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 11/02/2023] [Accepted: 11/07/2023] [Indexed: 11/26/2023] Open
Abstract
This study is based on the fatty acid and amino acid profiles of seven edible insect species: Acheta domesticus, Alphitobius diaperinus, Blaptica dubia, Galleria mellonella, Locusta migratoria, Tenebrio molitor, and Zophobas morio. The aim of the present study is to provide new data on the fatty acid distributions among lipid classes as well as the species-specific protein conversion factor (Kp) of a wide range of insects in order to further improve the nutritional characterisation of insects as food. Oleic acid was the predominant fatty acid in all insects except for A. domesticus, in which a significantly higher percentage of linoleic acid was found. The majority of the lipids were neutral lipids. A significant amount of α-linolenic acid in the phospholipid fraction of L. migratoria was shown, while in T. molitor, phospholipids were the only fraction in which a measurable amount of docosahexaenoic acid was found. Overall, in most insects, the phospholipid fraction had the highest polyunsaturated fatty acid content compared to the other classes, which may be protective in terms of auto-oxidative stability. Kp values in the range of 4.17 to 6.43 were obtained. Within the nutritional quality indices, all insects showed healthy fatty acids and high-quality amino acid profiles.
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Affiliation(s)
- Cristina Perez-Santaescolastica
- Research Group of Meat Technology & Science of Protein-Rich Foods (MTSP), Department of Microbial and Molecular Systems (M2S), KU Leuven—Ghent, Gebroeders De Smetstraat 1, 9000 Ghent, Belgium;
| | - Ilse de Pril
- Research Group Enzyme, Fermentation and Brewing Technology (EFBT), Department of Microbial and Molecular Systems (M2S), KU Leuven—Ghent, Gebroeders De Smetstraat 1, 9000 Ghent, Belgium; (I.d.P.); (I.v.d.V.)
| | - Ilse van de Voorde
- Research Group Enzyme, Fermentation and Brewing Technology (EFBT), Department of Microbial and Molecular Systems (M2S), KU Leuven—Ghent, Gebroeders De Smetstraat 1, 9000 Ghent, Belgium; (I.d.P.); (I.v.d.V.)
| | - Ilse Fraeye
- Research Group of Meat Technology & Science of Protein-Rich Foods (MTSP), Department of Microbial and Molecular Systems (M2S), KU Leuven—Ghent, Gebroeders De Smetstraat 1, 9000 Ghent, Belgium;
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3
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Perkons I, Varunjikar MS, Rasinger JD. Unveiling the potential of proteomics in addressing food and feed safety challenges. EFSA J 2023; 21:e211013. [PMID: 38047126 PMCID: PMC10687763 DOI: 10.2903/j.efsa.2023.e211013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2023] Open
Abstract
The food and feed sector in Europe is rapidly evolving to address contemporary challenges, striving for fairer, safer, greener and more sustainable food systems. This includes the exploration of new protein sources for human consumption and animal feed such as protein derived from insects, algae or novel plant-derived proteins, and the re-evaluation of existing sources like processed animal protein (PAP). To generate reliable data on the diverse array of emerging protein sources for future food and feed safety assessments, a growing demand for the development and implementation of advanced analytical techniques exists. New approach methodologies (NAMs) including, mass spectrometry (MS)-based proteomics methods have been emerging as valuable techniques which potentially can be implemented in regulatory laboratory settings to complement conventional approaches in this realm. These MS-driven strategies have already proven their utility in diverse applications, including the detection of prohibited substances in feed, identification of allergens, differentiation of fish species in complex mixtures for fraud detection and the verification of novel foods and alternative protein sources. This EU-FORA programme was focused on three core objectives namely: (i) the training of the fellow in utilising MS-based proteomics for food and feed safety analyses, (ii) the involvement of the fellow in the development of standardised operating procedures (SOP) for targeted and non-targeted proteomic MS-based workflows for species and tissues specific PAP identification in a national reference laboratory (NRL) and (iii) the transfer and implementation of MS-based approaches and standardised protocols for PAP analysis at the fellow's home institution. Altogether, this programme facilitates the broadening and diversification of use of MS-based proteomic methodologies for reinforcing their significance within the domains of food and feed safety research and regulatory science applications.
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Affiliation(s)
- Ingus Perkons
- Institute of Food SafetyAnimal Health and Environment ‘BIOR’, RigaLatvia
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4
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Lecrenier MC, Plasman L, Cordonnier A, Baeten V. Preliminary Feed Sedimentation Step for the Sensitive and Specific Detection of Processed Animal Proteins by Mass Spectrometry-Based Proteomics. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:15774-15784. [PMID: 37824504 DOI: 10.1021/acs.jafc.3c03253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
The circular economy is one of the main building blocks of the European Green Deal. In this context, the use of former foodstuffs containing ruminant gelatin was recently authorized in nonruminant feed. This minor modification makes it more challenging, if not impossible, to interpret the analytical results of the official control for animal proteins. The presence of ruminant DNA from authorized byproducts (i.e., milk and/or gelatin) may hide the use of prohibited byproducts. The objective of this work was to evaluate the use of sedimentation to increase the sensitivity and specificity of bovine-processed animal proteins (PAPs) detection by mass spectrometry-based proteomics. Both approaches (standard versus optimized method) were evaluated by UHPLC-MS/MS on various animal feeds and samples from an interlaboratory study. The optimized method was able to achieve the adulteration level below the level of 0.1% PAPs required by the European Commission. This approach presents a simple and economical solution to improve the method without the need for new equipment or expertise since it is already in place in the control laboratories.
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Affiliation(s)
- Marie-Caroline Lecrenier
- Quality and Authentication Unit, Agricultural Product Knowledge and Valorisation Department, Walloon Agricultural Research Centre (CRA-W), Chaussée de Namur 24, 5030 Gembloux, Belgium
| | - Lisa Plasman
- Quality and Authentication Unit, Agricultural Product Knowledge and Valorisation Department, Walloon Agricultural Research Centre (CRA-W), Chaussée de Namur 24, 5030 Gembloux, Belgium
| | - Alexandra Cordonnier
- Quality and Authentication Unit, Agricultural Product Knowledge and Valorisation Department, Walloon Agricultural Research Centre (CRA-W), Chaussée de Namur 24, 5030 Gembloux, Belgium
| | - Vincent Baeten
- Quality and Authentication Unit, Agricultural Product Knowledge and Valorisation Department, Walloon Agricultural Research Centre (CRA-W), Chaussée de Namur 24, 5030 Gembloux, Belgium
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5
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Hao C, Elias JE, Lee PKH, Lam H. metaSpectraST: an unsupervised and database-independent analysis workflow for metaproteomic MS/MS data using spectrum clustering. MICROBIOME 2023; 11:176. [PMID: 37550758 PMCID: PMC10405559 DOI: 10.1186/s40168-023-01602-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 06/18/2023] [Indexed: 08/09/2023]
Abstract
BACKGROUND The high diversity and complexity of the microbial community make it a formidable challenge to identify and quantify the large number of proteins expressed in the community. Conventional metaproteomics approaches largely rely on accurate identification of the MS/MS spectra to their corresponding short peptides in the digested samples, followed by protein inference and subsequent taxonomic and functional analysis of the detected proteins. These approaches are dependent on the availability of protein sequence databases derived either from sample-specific metagenomic data or from public repositories. Due to the incompleteness and imperfections of these protein sequence databases, and the preponderance of homologous proteins expressed by different bacterial species in the community, this computational process of peptide identification and protein inference is challenging and error-prone, which hinders the comparison of metaproteomes across multiple samples. RESULTS We developed metaSpectraST, an unsupervised and database-independent metaproteomics workflow, which quantitatively profiles and compares metaproteomics samples by clustering experimentally observed MS/MS spectra based on their spectral similarity. We applied metaSpectraST to fecal samples collected from littermates of two different mother mice right after weaning. Quantitative proteome profiles of the microbial communities of different mice were obtained without any peptide-spectrum identification and used to evaluate the overall similarity between samples and highlight any differentiating markers. Compared to the conventional database-dependent metaproteomics analysis, metaSpectraST is more successful in classifying the samples and detecting the subtle microbiome changes of mouse gut microbiomes post-weaning. metaSpectraST could also be used as a tool to select the suitable biological replicates from samples with wide inter-individual variation. CONCLUSIONS metaSpectraST enables rapid profiling of metaproteomic samples quantitatively, without the need for constructing the protein sequence database or identification of the MS/MS spectra. It maximally preserves information contained in the experimental MS/MS spectra by clustering all of them first and thus is able to better profile the complex microbial communities and highlight their functional changes, as compared with conventional approaches. tag the videobyte in this section as ESM4 Video Abstract.
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Affiliation(s)
- Chunlin Hao
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Hong Kong SAR, China
- School of Energy and Environment, City University of Hong Kong, Hong Kong SAR, China
| | | | - Patrick K. H. Lee
- School of Energy and Environment, City University of Hong Kong, Hong Kong SAR, China
- State Key Laboratory of Marine Pollution, City University of Hong Kong, Hong Kong SAR, China
| | - Henry Lam
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Hong Kong SAR, China
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6
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Anselmo A, Veys P, Fumière O, Lecrenier MC, Cordonnier A, Michez D, Baeten V. Challenges related to the application of analytical methods to control insect meals in the context of European legislation. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2023:1-12. [PMID: 37163652 DOI: 10.1080/19440049.2023.2211677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Since their approval for use in aquaculture in 2017, processed insect proteins have been extensively studied for their nutritional quality in animal feed. This new type of meal is highly promising but requires, as for other products used in animal feed, strict sanitary control in accordance with European legislation. Within this legal framework, light microscopy and PCR remain the official methods but have some analytical limitations that other methods could overcome. This paper aims to provide an overview of the European legislation concerning use of processed insect proteins, but also to highlight the advantages and disadvantages of the official methods for their analysis. It also points out other analytical methods, which have already proved their worth for the analysis of processed animal proteins, which could be used as complementary methods.
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Affiliation(s)
- Abigaël Anselmo
- Walloon Agricultural Research Centre (CRA-W), Quality and Authentication of Products Unit (QAF), Gembloux, Belgium
- University of Mons (UMons), Research Institute for Biosciences, Laboratory of Zoology, Mons, Belgium
| | - Pascal Veys
- Walloon Agricultural Research Centre (CRA-W), Quality and Authentication of Products Unit (QAF), Gembloux, Belgium
| | - Olivier Fumière
- Walloon Agricultural Research Centre (CRA-W), Quality and Authentication of Products Unit (QAF), Gembloux, Belgium
| | - Marie-Caroline Lecrenier
- Walloon Agricultural Research Centre (CRA-W), Quality and Authentication of Products Unit (QAF), Gembloux, Belgium
| | - Alexandra Cordonnier
- Walloon Agricultural Research Centre (CRA-W), Quality and Authentication of Products Unit (QAF), Gembloux, Belgium
| | - Denis Michez
- University of Mons (UMons), Research Institute for Biosciences, Laboratory of Zoology, Mons, Belgium
| | - Vincent Baeten
- Walloon Agricultural Research Centre (CRA-W), Quality and Authentication of Products Unit (QAF), Gembloux, Belgium
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7
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Bose U, Juhasz A, Stockwell S, Escobar-Correas S, Marcora A, Paull C, Broadbent JA, Wijffels G. Unpacking the Proteome and Metaproteome of the Black Soldier Fly Larvae: Efficacy and Complementarity of Multiple Protein Extraction Protocols. ACS OMEGA 2023; 8:7319-7330. [PMID: 36872973 PMCID: PMC9979371 DOI: 10.1021/acsomega.2c04462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 02/07/2023] [Indexed: 06/18/2023]
Abstract
The larvae of the black soldier fly (BSF), Hermetia illucens (Diptera: Stratiomyidae), have demonstrated the ability to efficiently bioconvert organic waste into a sustainable source of food and feed, but fundamental biology remains to be discovered to exploit their full biodegradative potential. Herein, LC-MS/MS was used to assess the efficiency of eight differing extraction protocols to build foundational knowledge regarding the proteome landscape of both the BSF larvae body and gut. Each protocol yielded complementary information to improve BSF proteome coverage. Protocol 8 (liquid nitrogen, defatting, and urea/thiourea/chaps) was better than all other protocols for the protein extraction from larvae gut samples, and the exclusion of defatting steps yielded the highest number of proteins for the larval body samples. Protocol-specific functional annotation using protein level information has shown that the selection of extraction buffer can affect protein detection and their associated functional classes within the measured BSF larval gut proteome. A targeted LC-MRM-MS experiment was performed on the selected enzyme subclasses to assess the influence of protocol composition using peptide abundance measurements. Metaproteome analysis of the BSF larvae gut has uncovered the prevalence of two bacterial phyla: actinobacteria and proteobacteria. We envisage that using complementary extraction protocols and investigating the proteome from the BSF body and gut separately will expand the fundamental knowledge of the BSF proteome and thereby provide translational opportunities for future research to enhance their efficiency for waste degradation and contribution to the circular economy.
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Affiliation(s)
- Utpal Bose
- CSIRO
Agriculture and Food, 306 Carmody Road, St Lucia, Queensland 4067, Australia
- Australian
Research Council Centre of Excellence for Innovations in Peptide and
Protein Science, School of Science, Edith
Cowan University, Joondalup, Western Australia 6027, Australia
- School
of Pharmacy, The University of Queensland, Brisbane, Queensland 4067, Australia
| | - Angela Juhasz
- Australian
Research Council Centre of Excellence for Innovations in Peptide and
Protein Science, School of Science, Edith
Cowan University, Joondalup, Western Australia 6027, Australia
| | - Sally Stockwell
- CSIRO
Agriculture and Food, 306 Carmody Road, St Lucia, Queensland 4067, Australia
| | - Sophia Escobar-Correas
- CSIRO
Agriculture and Food, 306 Carmody Road, St Lucia, Queensland 4067, Australia
- Australian
Research Council Centre of Excellence for Innovations in Peptide and
Protein Science, School of Science, Edith
Cowan University, Joondalup, Western Australia 6027, Australia
- CSIRO
Agriculture and Food, Boggo Road, Dutton Park, Brisbane, Queensland 4001, Australia
| | - Anna Marcora
- School
of Pharmacy, The University of Queensland, Brisbane, Queensland 4067, Australia
| | - Cate Paull
- School
of Pharmacy, The University of Queensland, Brisbane, Queensland 4067, Australia
| | - James A. Broadbent
- CSIRO
Agriculture and Food, 306 Carmody Road, St Lucia, Queensland 4067, Australia
| | - Gene Wijffels
- CSIRO
Agriculture and Food, 306 Carmody Road, St Lucia, Queensland 4067, Australia
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8
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Lin A, Deatherage Kaiser BL, Hutchison JR, Bilmes JA, Noble WS. MS1Connect: a mass spectrometry run similarity measure. Bioinformatics 2023; 39:7005198. [PMID: 36702456 PMCID: PMC9913042 DOI: 10.1093/bioinformatics/btad058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 01/05/2023] [Accepted: 01/24/2023] [Indexed: 01/28/2023] Open
Abstract
MOTIVATION Interpretation of newly acquired mass spectrometry data can be improved by identifying, from an online repository, previous mass spectrometry runs that resemble the new data. However, this retrieval task requires computing the similarity between an arbitrary pair of mass spectrometry runs. This is particularly challenging for runs acquired using different experimental protocols. RESULTS We propose a method, MS1Connect, that calculates the similarity between a pair of runs by examining only the intact peptide (MS1) scans, and we show evidence that the MS1Connect score is accurate. Specifically, we show that MS1Connect outperforms several baseline methods on the task of predicting the species from which a given proteomics sample originated. In addition, we show that MS1Connect scores are highly correlated with similarities computed from fragment (MS2) scans, even though these data are not used by MS1Connect. AVAILABILITY AND IMPLEMENTATION The MS1Connect software is available at https://github.com/bmx8177/MS1Connect. SUPPLEMENTARY INFORMATION Supplementary data are available at Bioinformatics online.
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Affiliation(s)
- Andy Lin
- Chemical and Biological Signatures, Pacific Northwest National Laboratory, Richland, WA 99354, USA
| | | | - Janine R Hutchison
- Chemical and Biological Signatures, Pacific Northwest National Laboratory, Richland, WA 99354, USA
| | - Jeffrey A Bilmes
- Department of Electrical and Computer Engineering, University of Washington, Seattle, WA 98195, USA
| | - William Stafford Noble
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA.,Paul G. Allen School of Computer Science and Engineering, University of Washington, Seattle, WA 98195, USA
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9
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Radhakrishnan G, Silva MS, Lock EJ, Belghit I, Philip AJP. Assessing amino acid solubility of black soldier fly larvae meal in Atlantic salmon ( Salmo salar) in vivo and in vitro. Front Physiol 2022; 13:1028992. [PMID: 36505052 PMCID: PMC9727232 DOI: 10.3389/fphys.2022.1028992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 11/07/2022] [Indexed: 11/25/2022] Open
Abstract
In vitro and in vivo methods were used to evaluate amino acids solubility of black soldier fly (BSF) larvae meal and two experimental diets (reference and test diets) for Atlantic salmon. The current study used in vitro method such as pH stat to compare and standardise the salmon extracted enzyme (SE), and commercial enzyme (CE) based on their hydrolytic capacity on a purified protein substrate. Further, an in vitro amino acid solubility of feed ingredients and diets were measured using the standardised enzyme volume from SE and CE. Results showed that SE and CE exhibit similar protein hydrolytic capacity upon standardisation on purified substrates. However, when using the two-stage hydrolysis (acidic and alkaline steps), significantly higher amino acid solubility was observed with CE except for glycine, and proline which were equally solubilised by both SE, and CE. No significant difference was observed between reference and test diet using the SE except for tyrosine, valine, leucine, and phenylalanine, which were significantly higher solubilised in reference diet than test diet. Whereas higher solubility of valine, isoleucine, aspartic acid, and glutamic acid was observed in test diet using CE than SE. Similarly, the solubility of valine, isoleucine, and glutamic acid were higher in BSF larvae meal when CE was used. The in vivo true protein digestibility of BSF larvae meal was 99%, and 81% for the test diet containing BSF larvae meal. The results demonstrated a positive correlation (r = 0.91; p < 0.01) between salmon and commercial enzymes but overall, no significant correlation was observed for amino acid solubility between in vivo and in vitro. However, there was a strong positive correlation for protein solubility using SE (r = 0.98) than CE (r = 0.74) with the in vivo true protein digestibility. The efficiency of SE, and CE can be compared, and standardised based on DH%, and hence correlates better with the in vivo protein digestibility but not with amino acid solubilities.
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Affiliation(s)
- Gopika Radhakrishnan
- Institute of Marine Research, Bergen, Norway,Department of Biological Sciences, University of Bergen, Bergen, Norway
| | | | - Erik-Jan Lock
- Institute of Marine Research, Bergen, Norway,Department of Biological Sciences, University of Bergen, Bergen, Norway
| | - Ikram Belghit
- Institute of Marine Research, Bergen, Norway,*Correspondence: Ikram Belghit,
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10
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Marissen R, Varunjikar MS, Laros JFJ, Rasinger JD, Neely BA, Palmblad M. compareMS2 2.0: An Improved Software for Comparing Tandem Mass Spectrometry Datasets. J Proteome Res 2022; 22:514-519. [PMID: 36173614 PMCID: PMC9903320 DOI: 10.1021/acs.jproteome.2c00457] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
It has long been known that biological species can be identified from mass spectrometry data alone. Ten years ago, we described a method and software tool, compareMS2, for calculating a distance between sets of tandem mass spectra, as routinely collected in proteomics. This method has seen use in species identification and mixture characterization in food and feed products, as well as other applications. Here, we present the first major update of this software, including a new metric, a graphical user interface and additional functionality. The data have been deposited to ProteomeXchange with dataset identifier PXD034932.
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Affiliation(s)
- Rob Marissen
- Center
for Proteomics and Metabolomics, Leiden
University Medical Center, Postbus 9600, 2300 RC Leiden, The Netherlands
| | | | - Jeroen F. J. Laros
- National
Institute for Public Health and the Environment, 3720 BA Bilthoven, The Netherlands,Department
of Human Genetics, Leiden University Medical
Center, Postbus 9600, 2300
RC Leiden, The Netherlands
| | - Josef D. Rasinger
- Institute
of Marine Research, P.O. Box 1870
Nordnes, 5817 Bergen, Norway
| | - Benjamin A. Neely
- National
Institute of Standards and Technology, Charleston, South Carolina 29412, United States
| | - Magnus Palmblad
- Center
for Proteomics and Metabolomics, Leiden
University Medical Center, Postbus 9600, 2300 RC Leiden, The Netherlands,. Phone: +31 71 5266969
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11
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Development and validation of a novel real-time PCR protocol for the detection of buffalo worm (Alphitobius diaperinus) in food. Food Control 2022. [DOI: 10.1016/j.foodcont.2022.109138] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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12
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Marien A, Sedefoglu H, Dubois B, Maljean J, Francis F, Berben G, Guillet S, Morin JF, Fumière O, Debode F. Detection of Alphitobius diaperinus by Real-Time Polymerase Chain Reaction With a Single-Copy Gene Target. Front Vet Sci 2022; 9:718806. [PMID: 35356786 PMCID: PMC8959938 DOI: 10.3389/fvets.2022.718806] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 01/10/2022] [Indexed: 01/06/2023] Open
Abstract
Use of edible insects as an alternative source of proteins in food and feed is increasing. These last years, numerous companies in Europe have started producing insects for food and feed purposes. In the European Union, the use of edible insects for human consumption falls within Regulation (EU) No. 2015/2283 on novel foods. For feed, Commission Regulation (EU) 2017/893 authorizes seven insect species as processed animal proteins for aquaculture. Methods of authentication are required to check the conformity of the products. In this study, we propose a real-time polymerase chain reaction (PCR) method for the specific detection of the lesser mealworm (Alphitobius diaperinus), one of the species included in the shortlist of authorized insects. The selected target is the cadherin gene with a single-copy (per haploid genome) illustrated by our experimental evidence. The PCR test amplified a 134-bp fragment of the cadherin gene. The qualitative method was assessed toward several performance criteria. Specificity was checked against 54 insect species next to other animal and plant species. The sensitivity, efficiency, robustness, and transferability of the PCR assay were also successfully tested. Finally, the applicability of the test was assessed on real-life processed samples (industrial meals) of A. diaperinus. The study also showed that there seems to be a huge confusion on the correct labeling of the marketed mealworms. We did not succeed to get Alphitobius laevigatus samples. They all appeared to belong to the A. diaperinus taxon.
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Affiliation(s)
- Aline Marien
- Quality and Authentication of Agricultural Products Unit, Knowledge and Valorization of Agricultural Products Department, Walloon Agricultural Research Centre, Gembloux, Belgium
- *Correspondence: Aline Marien
| | - Hamza Sedefoglu
- Haute Ecole Louvain-en-Hainaut, Montignies-sur-Sambre, Belgium
| | - Benjamin Dubois
- Quality and Authentication of Agricultural Products Unit, Knowledge and Valorization of Agricultural Products Department, Walloon Agricultural Research Centre, Gembloux, Belgium
| | - Julien Maljean
- Quality and Authentication of Agricultural Products Unit, Knowledge and Valorization of Agricultural Products Department, Walloon Agricultural Research Centre, Gembloux, Belgium
| | - Frédéric Francis
- Functional and Evolutionary Entomology, Gembloux Agro-Bio Tech, ULiège, Gembloux, Belgium
| | - Gilbert Berben
- Quality and Authentication of Agricultural Products Unit, Knowledge and Valorization of Agricultural Products Department, Walloon Agricultural Research Centre, Gembloux, Belgium
| | | | | | - Olivier Fumière
- Quality and Authentication of Agricultural Products Unit, Knowledge and Valorization of Agricultural Products Department, Walloon Agricultural Research Centre, Gembloux, Belgium
| | - Frédéric Debode
- Biological Engineering Unit, Life Sciences Department, Walloon Agricultural Research Centre, Gembloux, Belgium
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13
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Alfiko Y, Xie D, Astuti RT, Wong J, Wang L. Insects as a feed ingredient for fish culture: Status and trends. AQUACULTURE AND FISHERIES 2022. [DOI: 10.1016/j.aaf.2021.10.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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14
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Toral PG, Hervás G, González-Rosales MG, Mendoza AG, Robles-Jiménez LE, Frutos P. Insects as alternative feed for ruminants: comparison of protein evaluation methods. J Anim Sci Biotechnol 2022; 13:21. [PMID: 35144685 PMCID: PMC8832790 DOI: 10.1186/s40104-021-00671-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 12/21/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The high dependence of intensive ruminant production on soybean meal and the environmental impact of this crop encourage the search for alternative protein-rich feeds. The use of insects seems promising, but the extent of their ruminal protein degradation is largely unknown. This parameter has major influence not only on N utilization efficiency but also on the environmental burden of ruminant farming. In addition, although assessing ruminal N degradation represents a key first step to examine the potential of new feeds, it is a challenging task due to the lack of a reference method. This study was conducted to investigate the potential of 4 insects (Tenebrio molitor, Zophobas morio, Alphitobius diaperinus and Acheta domesticus) as alternative protein sources for ruminants, using 3 methodologies: 1) a regression technique based on the in vitro relationship between gas production and ammonia-N concentration; 2) a conventional in vitro technique of batch cultures of ruminal microorganisms, based on filtering the incubation residue through sintered glass crucibles; and 3) the in situ nylon bag technique. The in vitro intestinal digestibility of the non-degraded protein in the rumen was also determined. Soybean meal was used as a reference feedstuff. RESULTS Comparison of evaluation methods (regression, in vitro and in situ) did not allow to reliably select a single value of ruminal N degradation for the studied substrates, but all techniques seem to establish a similar ranking, with good correlations between methods, particularly between regression and in situ results. Regardless of the methodology, nitrogen from the 4 insects (with contents ranging from 81 to 112 g/kg of dry matter) did not show high ruminal degradation (41-76%), this value being always lower than that of soybean meal. Furthermore, the in vitro intestinal digestibility of non-degraded N was relatively high in all feeds (≥ 64%). CONCLUSION Overall, these results support the potential of the 4 studied insects as alternative feedstuffs for ruminants. Among them, T. molitor showed the lowest and greatest values of ruminal N degradation and intestinal digestibility, respectively, which would place it as probably the best option to replace dietary soybean meal and increase the sustainability of ruminant feeding.
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Affiliation(s)
- Pablo G Toral
- Instituto de Ganadería de Montaña (CSIC-University of León), Finca Marzanas s/n, 24346 Grulleros, León, Spain
| | - Gonzalo Hervás
- Instituto de Ganadería de Montaña (CSIC-University of León), Finca Marzanas s/n, 24346 Grulleros, León, Spain
| | | | - Alejandro G Mendoza
- Instituto de Ganadería de Montaña (CSIC-University of León), Finca Marzanas s/n, 24346 Grulleros, León, Spain
| | - Lizbeth E Robles-Jiménez
- Instituto de Ganadería de Montaña (CSIC-University of León), Finca Marzanas s/n, 24346 Grulleros, León, Spain.,Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma del Estado de México, No. 100 Instituto Literario 100, Col. Centro, 50000, Toluca, Estado de México, Mexico
| | - Pilar Frutos
- Instituto de Ganadería de Montaña (CSIC-University of León), Finca Marzanas s/n, 24346 Grulleros, León, Spain.
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15
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Varunjikar MS, Belghit I, Gjerde J, Palmblad M, Oveland E, Rasinger JD. Shotgun proteomics approaches for authentication, biological analyses, and allergen detection in feed and food-grade insect species. Food Control 2022. [DOI: 10.1016/j.foodcont.2022.108888] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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16
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Varunjikar MS, Moreno-Ibarguen C, Andrade-Martinez JS, Tung HS, Belghit I, Palmblad M, Olsvik PA, Reyes A, Rasinger JD, Lie KK. Comparing novel shotgun DNA sequencing and state-of-the-art proteomics approaches for authentication of fish species in mixed samples. Food Control 2022. [DOI: 10.1016/j.foodcont.2021.108417] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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17
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Belghit I, Varunjikar M, Lecrenier MC, Steinhilber A, Niedzwiecka A, Wang Y, Dieu M, Azzollini D, Lie K, Lock EJ, Berntssen M, Renard P, Zagon J, Fumière O, van Loon J, Larsen T, Poetz O, Braeuning A, Palmblad M, Rasinger J. Future feed control – Tracing banned bovine material in insect meal. Food Control 2021. [DOI: 10.1016/j.foodcont.2021.108183] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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18
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Garino C, Zagon J, Nesic K. Novel real-time PCR protocol for the detection of house cricket (Acheta domesticus) in feed. Anim Feed Sci Technol 2021. [DOI: 10.1016/j.anifeedsci.2021.115057] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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19
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Lecrenier MC, Marien A, Veys P, Belghit I, Dieu M, Gillard N, Henrottin J, Herfurth UM, Marchis D, Morello S, Oveland E, Poetz O, Rasinger JD, Steinhilber A, Baeten V, Berben G, Fumière O. Inter-laboratory study on the detection of bovine processed animal protein in feed by LC-MS/MS-based proteomics. Food Control 2021. [DOI: 10.1016/j.foodcont.2021.107944] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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20
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Bose U, Broadbent JA, Juhász A, Karnaneedi S, Johnston EB, Stockwell S, Byrne K, Limviphuvadh V, Maurer-Stroh S, Lopata AL, Colgrave ML. Protein extraction protocols for optimal proteome measurement and arginine kinase quantitation from cricket Acheta domesticus for food safety assessment. Food Chem 2021; 348:129110. [PMID: 33508605 DOI: 10.1016/j.foodchem.2021.129110] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 01/06/2021] [Accepted: 01/11/2021] [Indexed: 12/20/2022]
Abstract
Insects have been consumed by people for millennia and have recently been proposed as a complementary, sustainable source of protein to feed the world's growing population. Insects and crustaceans both belong to the arthropod family. Crustacean (shellfish) allergies are common and potentially severe; hence, the cross-reactivity of the immune system with insect proteins is a potential health concern. Herein, LC-MS/MS was used to explore the proteome of whole, roasted whole and roasted powdered cricket products. Eight protein extraction protocols were compared using the total number of protein and distinct peptide identifications. Within these data, 20 putative allergens were identified, of which three were arginine kinase (AK) proteoforms. Subsequently, a multiple reaction monitoring MS assay was developed for the AK proteoforms and applied to a subset of extracts. This targeted assay demonstrated that allergen abundance/detectability varies according to the extraction method as well as the food processing method.
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Affiliation(s)
- Utpal Bose
- CSIRO Agriculture and Food, 306 Carmody Rd, St Lucia, QLD 4067, Australia
| | - James A Broadbent
- CSIRO Agriculture and Food, 306 Carmody Rd, St Lucia, QLD 4067, Australia
| | - Angéla Juhász
- Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, School of Science, Edith Cowan University, Joondalup, WA 6027, Australia
| | - Shaymaviswanathan Karnaneedi
- Molecular Allergy Research Laboratory, Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, QLD, Australia
| | - Elecia B Johnston
- Molecular Allergy Research Laboratory, Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, QLD, Australia
| | - Sally Stockwell
- CSIRO Agriculture and Food, 306 Carmody Rd, St Lucia, QLD 4067, Australia
| | - Keren Byrne
- CSIRO Agriculture and Food, 306 Carmody Rd, St Lucia, QLD 4067, Australia
| | - Vachiranee Limviphuvadh
- Biomolecular Function Discovery Division, Bioinformatics Institute, Agency for Science, Technology and Research, Singapore; IFCS Programme, Singapore Institute for Food and Biotechnology Innovation, Agency for Science, Technology and Research, Singapore
| | - Sebastian Maurer-Stroh
- Biomolecular Function Discovery Division, Bioinformatics Institute, Agency for Science, Technology and Research, Singapore; IFCS Programme, Singapore Institute for Food and Biotechnology Innovation, Agency for Science, Technology and Research, Singapore; Department of Biological Sciences, National University of Singapore, Singapore
| | - Andreas L Lopata
- Molecular Allergy Research Laboratory, Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, QLD, Australia
| | - Michelle L Colgrave
- CSIRO Agriculture and Food, 306 Carmody Rd, St Lucia, QLD 4067, Australia; Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, School of Science, Edith Cowan University, Joondalup, WA 6027, Australia.
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21
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Hong J, Han T, Kim YY. Mealworm ( Tenebrio molitor Larvae) as an Alternative Protein Source for Monogastric Animal: A Review. Animals (Basel) 2020; 10:ani10112068. [PMID: 33171639 PMCID: PMC7695176 DOI: 10.3390/ani10112068] [Citation(s) in RCA: 80] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/05/2020] [Accepted: 11/06/2020] [Indexed: 12/20/2022] Open
Abstract
Simple Summary Tenebrio molitor (T. molitor) larvae, known as mealworm, have been considered a good protein source for monogastric animals. They have a high quantity and quality of protein content and amino acid profile. The inclusion of T. molitor larvae in broiler diets improved the growth performance without having negative effects on carcass traits and blood profiles in broiler chickens, or had no influence on the growth performance and carcass yield of broiler chickens. The supplementation of T. molitor larvae improved the growth performance and protein utilization of weaning pigs. Furthermore, the replacement of fishmeal with T. molitor larvae resulted in no difference in the growth performance and nutrient digestibility of weaning pigs. However, there are some challenges regarding biosafety, consumer’s acceptance, and price for the use of T. moiltor larvae in animal feed. Consequently, T. molitor larvae could be used as an alternative or sustainable protein source in monogastric animal feed. Abstract Edible insects have been used as an alternative protein source for food and animal feed, and the market size for edible insects has increased. Tenebrio molitor larvae, also known as mealworm and yellow mealworm, are considered a good protein source with nutritional value, digestibility, flavor, and a functional ability. Additionally, they are easy to breed and feed for having a stable protein content, regardless of their diets. Therefore, T. molitor larvae have been produced industrially as feed for pets, zoo animals, and even for production animals. To maintain the nutrient composition and safety of T. molitor larvae, slaughtering (heating or freezing) and post-slaughtering (drying and grinding) procedures should be improved for animal feed. T. molitor larvae are also processed with defatting or hydrolysis before grinding. They have a high quality and quantity of protein and amino acid profile, so are considered a highly sustainable protein source for replacing soybean meal or fishmeal. T. molitor has a chitin in its cuticle, which is an indigestible fiber with positive effects on the immune system. In studies of poultry, the supplementation of T. molitor larvae improved the growth performance of broiler chickens, without having negative effects on carcass traits, whereas some studies have reported that there were no significant differences in the growth performance and carcass yield of broiler chickens. In studies of swine, the supplementation of T. molitor larvae improved the growth performance and protein utilization of weaning pigs. Furthermore, 10% of T. molitor larvae showed greater amino acid digestibility than conventional animal proteins in growing pigs. However, there are some challenges regarding the biosafety, consumer’s acceptance, and price for the use of T. moiltor larvae in animal feed. Consequently, T. molitor larvae could be used as an alternative or sustainable protein source in monogastric animal feed with a consideration of the nutritional values, biosafety, consumer’s acceptance, and market price of T. molitor larvae products.
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Affiliation(s)
- Jinsu Hong
- Department of Animal Science, South Dakota State University, Brookings, SD 57007, USA;
| | - Taehee Han
- Department of Production Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, 00014 Helsinki, Finland;
| | - Yoo Yong Kim
- Department of Agricultural Biotechnology, and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea
- Correspondence: ; Tel.: +82-2-878-5838; Fax: +82-2-878-5839
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22
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Lecrenier MC, Veys P, Fumière O, Berben G, Saegerman C, Baeten V. Official Feed Control Linked to the Detection of Animal Byproducts: Past, Present, and Future. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:8093-8103. [PMID: 32614586 DOI: 10.1021/acs.jafc.0c02718] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In the context of the expansion of the human population, availability of food, and in extension of animal feed, is a big issue. Favoring a circular economy by the valorization of byproducts is a sustainable way to be more efficient. Animal byproducts are an interesting source of feed materials due to their richness in proteins of high nutritional value. Prevention and control efforts have allowed a gradual lifting of the feed ban regarding the use of animal byproducts. Nevertheless, the challenge remains the development of analytical methods enabling a distinction between authorized and unauthorized feed materials. This Review focuses on the historical and epidemiological context of the official control, the evaluation of current and foreseen legislation, and the available methods of analysis for the detection of constituents of animal origin in feedingstuffs. It also underlines the analytical limitations of the approach and discusses some prospects of novel methods to ensure food and feed safety.
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Affiliation(s)
- Marie-Caroline Lecrenier
- Knowledge and Valorization of Agricultural Products Department, Walloon Agricultural Research Centre (CRA-W), Chaussée de Namur 24, 5030 Gembloux, Belgium
- Faculty of Veterinary Medicine, Fundamental and Applied Research for Animal and Health (FARAH) Center, Research Unit of Epidemiology and Risk Analysis Applied to Veterinary Sciences (UREAR-ULg), University of Liège (ULiège), Boulevard de Colonster 20 B42, 4000 Liège, Belgium
| | - Pascal Veys
- Knowledge and Valorization of Agricultural Products Department, Walloon Agricultural Research Centre (CRA-W), Chaussée de Namur 24, 5030 Gembloux, Belgium
| | - Olivier Fumière
- Knowledge and Valorization of Agricultural Products Department, Walloon Agricultural Research Centre (CRA-W), Chaussée de Namur 24, 5030 Gembloux, Belgium
| | - Gilbert Berben
- Knowledge and Valorization of Agricultural Products Department, Walloon Agricultural Research Centre (CRA-W), Chaussée de Namur 24, 5030 Gembloux, Belgium
| | - Claude Saegerman
- Faculty of Veterinary Medicine, Fundamental and Applied Research for Animal and Health (FARAH) Center, Research Unit of Epidemiology and Risk Analysis Applied to Veterinary Sciences (UREAR-ULg), University of Liège (ULiège), Boulevard de Colonster 20 B42, 4000 Liège, Belgium
| | - Vincent Baeten
- Knowledge and Valorization of Agricultural Products Department, Walloon Agricultural Research Centre (CRA-W), Chaussée de Namur 24, 5030 Gembloux, Belgium
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23
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Carrera M, Piñeiro C, Martinez I. Proteomic Strategies to Evaluate the Impact of Farming Conditions on Food Quality and Safety in Aquaculture Products. Foods 2020; 9:E1050. [PMID: 32759674 PMCID: PMC7466198 DOI: 10.3390/foods9081050] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 07/22/2020] [Accepted: 07/23/2020] [Indexed: 02/08/2023] Open
Abstract
This review presents the primary applications of various proteomic strategies to evaluate the impact of farming conditions on food quality and safety in aquaculture products. Aquaculture is a quickly growing sector that represents 47% of total fish production. Food quality, dietary management, fish welfare, the stress response, food safety, and antibiotic resistance, which are covered by this review, are among the primary topics in which proteomic techniques and strategies are being successfully applied. The review concludes by outlining future directions and potential perspectives.
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Affiliation(s)
- Mónica Carrera
- Food Technology Department, Institute of Marine Research (IIM), Spanish National Research Council (CSIC), 36208 Vigo, Pontevedra, Spain
| | - Carmen Piñeiro
- Scientific Instrumentation and Quality Service (SICIM), Institute of Marine Research (IIM), Spanish National Research Council (CSIC), 36208 Vigo, Pontevedra, Spain;
| | - Iciar Martinez
- Research Centre for Experimental Marine Biology and Biotechnology—Plentzia Marine Station (PiE), University of the Basque Country UPV/EHU, 48620 Plentzia, Spain;
- IKERBASQUE Basque Foundation for Science, 48013 Bilbao, Spain
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24
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Boulos S, Tännler A, Nyström L. Nitrogen-to-Protein Conversion Factors for Edible Insects on the Swiss Market: T. molitor, A. domesticus, and L. migratoria. Front Nutr 2020; 7:89. [PMID: 32754611 PMCID: PMC7366252 DOI: 10.3389/fnut.2020.00089] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 05/15/2020] [Indexed: 11/23/2022] Open
Abstract
With an increasing worldwide demand for animal protein, insects are becoming a promising sustainable option for meat protein replacement. However, reported protein contents of insects are often overestimated when calculated as "crude protein" = 6.25 × nitrogen content (N), compared to true protein contents quantified from the sum of amino acid (AA) residues. In this study, the main two types of usual nitrogen-to-protein conversion factors k p and k A were determined on the basis of true protein/total nitrogen and true protein/protein nitrogen, respectively, with focus on the three insect species legally sold on the Swiss food market. T. molitor (mealworm larvae), A. domesticus (house crickets), and L. migratoria (locusts) from various breeders were analyzed for total and amide nitrogen, chitin, and AA composition. Careful control experiments of insect samples spiked with a protein standard were conducted to establish the recovery of true protein, which was with >95% excellent. Mealworms, crickets, and locusts exhibited similar AA-profiles and true protein contents of 51, 55, and 47 g/100 g (dry weight basis), respectively. Specific conversion factors k p showed little variability between the three insect species with 5.41, 5.25, and 5.33 for mealworms, crickets, and locusts, respectively, and confirmed an average ~17% overestimation of protein contents when using 6.25 × N. The determined average k p of 5.33 is supported by extracted literature data and is suggested for general use instead of 6.25 × N to calculate more accurate insect protein contents, whereas the average pure protein conversion factor k A of 5.6 is proposed for use in the case of insect protein isolates.
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Affiliation(s)
| | | | - Laura Nyström
- Laboratory of Food Biochemistry, Department of Health Sciences and Technology, Institute of Food, Nutrition and Health, ETH Zurich, Zürich, Switzerland
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25
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Proteomics based approach for edible insect fingerprinting in novel food: Differential efficiency according to selected model species. Food Control 2020. [DOI: 10.1016/j.foodcont.2020.107135] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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