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Gil F, Beroiz B, Ballesteros I, Horreo JL. Can consumers avoid mislabelling? Genetic species identification provides recommendations for shrimp/prawn products. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024. [PMID: 39031483 DOI: 10.1002/jsfa.13771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 06/14/2024] [Accepted: 07/08/2024] [Indexed: 07/22/2024]
Abstract
BACKGROUND Crustaceans of the superfamily Penaeoidea (e.g., shrimps and prawns) are among the most commercially available aquatic products worldwide. However, there are few studies regarding not only the presence but also the characteristics of mislabelling in these food products. Such information would be helpful for consumers in order to avoid the typical problems associated with mislabelling (e.g., health and economic issues). For this reason, this work considers Penaeoidea mislabelling by comparing different products (frozen, fresh, boiled), and sources (hypermarkets, supermarkets and fishmongers) from Spain (Europe). RESULTS A total of 94 samples from 55 different products were collected, representing 19 different species from 13 genera. Mitochondrial DNA (COI gene) was amplified, revealing mislabelling in almost 30% of supermarket products and almost exclusively found in frozen samples (95% of the total) regardless of its price. In addition, products from the Pacific Ocean seem to be particularly susceptible to mislabelling. CONCLUSIONS All in all, recommendations for the consumer in order to avoid mislabelling of prawns include purchasing them fresh from fishmongers; aquaculture products must not be avoided. This study represents, to our knowledge, the first attempt to provide recommendations to consumers based on DNA analyses in order to avoid mislabelling in food products. Further research is therefore required to provide such recommendations in different food products, particularly those that are processed, packaged and/or frozen. © 2024 The Author(s). Journal of the Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Félix Gil
- Department of Genetics, Physiology and Microbiology, Faculty of Biological Sciences, Complutense University of Madrid, Madrid, Spain
| | - Beatriz Beroiz
- Department of Genetics, Physiology and Microbiology, Faculty of Biological Sciences, Complutense University of Madrid, Madrid, Spain
| | - Isabel Ballesteros
- Department of Genetics, Physiology and Microbiology, Faculty of Biological Sciences, Complutense University of Madrid, Madrid, Spain
| | - Jose Luis Horreo
- Department of Genetics, Physiology and Microbiology, Faculty of Biological Sciences, Complutense University of Madrid, Madrid, Spain
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2
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Wang YC, Liu SH, Ho HC, Su HY, Chang CH. DNA mini-barcoding reveals the mislabeling rate of canned cat food in Taiwan. PeerJ 2024; 12:e16833. [PMID: 38406290 PMCID: PMC10893872 DOI: 10.7717/peerj.16833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 01/04/2024] [Indexed: 02/27/2024] Open
Abstract
Background Domestic cats are important companion animals in modern society that live closely with their owners. Mislabeling of pet food can not only harm pets but also cause issues in areas such as religious beliefs and natural resource management. Currently, the cat food market is booming. However, despite the risk that mislabeling poses to cats and humans, few studies have focused on species misrepresentation in cat food products. Methods To address this issue, we used DNA barcoding, a highly effective identification methodology that can be applied to even highly processed products. We targeted a short segment (~85 basepairs) of the mitochondrial 16S rRNA (16S) gene as a barcode and employed Sanger or next generation sequencing (NGS) to inspect 138 canned cat food products in the Taiwanese market. Results We discovered that the majority of mislabeling incidents were related to replacement of tuna with other species. Moreover, our metabarcoding revealed that numerous undeclared ingredients were present in all examined canned products. One product contained CITES Appendix II-listed shortfin mako shark (Isurus oxyrinchus). Overall, we uncovered a mislabeling rate of at least 28.99%. To verify cases of mislabeling, an official standardized list of vernacular names, along with the corresponding scientific species names, as well as a dependable barcoding reference sequence database are necessary.
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Affiliation(s)
- Yu-Chun Wang
- Institute of Fisheries Science, National Taiwan University, Taipei, Taiwan
- Technical Service Division, Fisheries Research Institute, Keelung, Taiwan
| | - Shih-Hui Liu
- Department of Biological Sciences, National Sun Yat-sen University, Kaohsiung, Taiwan
| | - Hsuan Ching Ho
- Department and Graduate Institute of Aquaculture, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan
| | - Hsiao-Yin Su
- Department of Science Education, National Taipei University of Education, Taipei, Taiwan
| | - Chia-Hao Chang
- Department of Science Education, National Taipei University of Education, Taipei, Taiwan
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3
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Giusti A, Malloggi C, Magagna G, Filipello V, Armani A. Is the metabarcoding ripe enough to be applied to the authentication of foodstuff of animal origin? A systematic review. Compr Rev Food Sci Food Saf 2024; 23:e13256. [PMID: 38284609 DOI: 10.1111/1541-4337.13256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 09/25/2023] [Accepted: 10/02/2023] [Indexed: 01/30/2024]
Abstract
Food authentication using molecular techniques is of great importance to fight food fraud. Metabarcoding, based on the next-generation sequencing (NGS) technologies, allowing large-scale taxonomic identification of complex samples via massive parallel sequencing of fragments (called DNA barcodes) simultaneously, has become increasingly popular in many scientific fields. A systematic review to answer the question "Is the metabarcoding ripe enough to be applied to the authentication of foodstuff of animal origin?" is presented. The inclusion criteria were focused on the selection of scientific papers (SPs) only applying metabarcoding to foodstuff of animal origin collected on the market. The 23 included SPs were first analyzed with respect to the metabarcoding phases: library preparation (target genes, primer pairs, and fragment length), sequencing (NGS platforms), and final data analysis (bioinformatic pipelines). Given the importance of primer selection, the taxonomic coverage of the used primers was also evaluated. In addition, the SPs were scored based on the use of quality control measures (procedural blanks, positive controls, replicates, curated databases, and thresholds to filter the data). A lack of standardized protocols, especially with respect to the target barcode/s and the universal primer/s, and the infrequent application of the quality control measures, leads to answer that metabarcoding is not ripe enough for authenticating foodstuff of animal origin. However, the observed trend of the SP quality improvement over the years is encouraging. Concluding, a proper protocol standardization would allow a wider use of metabarcoding by both official and private laboratories, enabling this method to become the primary for the authentication of foodstuffs of animal origin.
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Affiliation(s)
- Alice Giusti
- FishLab, Department of Veterinary Sciences, University of Pisa, Pisa, Italy
| | - Chiara Malloggi
- FishLab, Department of Veterinary Sciences, University of Pisa, Pisa, Italy
| | - Giulia Magagna
- Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna "Bruno Ubertini", Brescia, Italy
| | - Virginia Filipello
- Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna "Bruno Ubertini", Brescia, Italy
| | - Andrea Armani
- FishLab, Department of Veterinary Sciences, University of Pisa, Pisa, Italy
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4
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Filonzi L, Ardenghi A, Rontani PM, Voccia A, Ferrari C, Papa R, Bellin N, Nonnis Marzano F. Molecular Barcoding: A Tool to Guarantee Correct Seafood Labelling and Quality and Preserve the Conservation of Endangered Species. Foods 2023; 12:2420. [PMID: 37372635 DOI: 10.3390/foods12122420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 06/14/2023] [Accepted: 06/16/2023] [Indexed: 06/29/2023] Open
Abstract
The recent increase in international fish trade leads to the need for improving the traceability of fishery products. In relation to this, consistent monitoring of the production chain focusing on technological developments, handling, processing and distribution via global networks is necessary. Molecular barcoding has therefore been suggested as the gold standard in seafood species traceability and labelling. This review describes the DNA barcoding methodology for preventing food fraud and adulteration in fish. In particular, attention has been focused on the application of molecular techniques to determine the identity and authenticity of fish products, to discriminate the presence of different species in processed seafood and to characterize raw materials undergoing food industry processes. In this regard, we herein present a large number of studies performed in different countries, showing the most reliable DNA barcodes for species identification based on both mitochondrial (COI, cytb, 16S rDNA and 12S rDNA) and nuclear genes. Results are discussed considering the advantages and disadvantages of the different techniques in relation to different scientific issues. Special regard has been dedicated to a dual approach referring to both the consumer's health and the conservation of threatened species, with a special focus on the feasibility of the different genetic and genomic approaches in relation to both scientific objectives and permissible costs to obtain reliable traceability.
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Affiliation(s)
- Laura Filonzi
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, 43124 Parma, Italy
| | - Alessia Ardenghi
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, 43124 Parma, Italy
| | - Pietro Maria Rontani
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, 43124 Parma, Italy
| | - Andrea Voccia
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, 43124 Parma, Italy
| | - Claudio Ferrari
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, 43124 Parma, Italy
| | - Riccardo Papa
- Department Biology, University of Puerto Rico, Rio Piedras, San Juan 00925, Puerto Rico
| | - Nicolò Bellin
- Department Biology, University of Puerto Rico, Rio Piedras, San Juan 00925, Puerto Rico
| | - Francesco Nonnis Marzano
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, 43124 Parma, Italy
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5
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Yanjin F, Hanyue X, Xiong X, Ying Y, Libin W, Xiaohui X. Detection of Salmonidae ingredient using mini-DNA barcoding in conjunction with a rapid visual inspection method. J Food Compost Anal 2023. [DOI: 10.1016/j.jfca.2023.105198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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6
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Roungchun JB, Tabb AM, Hellberg RS. Identification of tuna species in raw and processed products using DNA mini-barcoding of the mitochondrial control region. Food Control 2022. [DOI: 10.1016/j.foodcont.2021.108752] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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7
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Tang Q, Luo QI, Duan Q, Deng L, Zhang R. DNA Barcode Identification of Fish Products from Guiyang Markets in Southwestern People's Republic of China. J Food Prot 2022; 85:583-590. [PMID: 34995351 DOI: 10.4315/jfp-21-258] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 01/07/2022] [Indexed: 11/11/2022]
Abstract
ABSTRACT Global fish consumption is increasing in tandem with population growth, resulting in the dilemma of overfishing. Overfished high-value fish are often replaced with other fish in markets. Therefore, the accurate identification of fish products in the market is important. In this study, full-DNA and mini-DNA barcoding were used to detect fish product fraud in Guiyang, Guizhou Province, People's Republic of China. The molecular results revealed that 39 (20.42%) of the 191 samples were inconsistent with the labels. The percentages of mislabeling of fresh, frozen, cooked, and canned fish products were 11.70, 20.00, 34.09, and 50.00%, respectively. The average Kimura two-parameter distances of mini-DNA barcoding within species and within genera were 0.56 and 6.42%, respectively, and those of full-DNA barcoding were 0.53 and 7.25%, respectively. Commercial fraud was evident in this study; most high-priced fish were replaced with low-priced fish with similar features. Our findings indicate that DNA barcoding is an effective tool for identifying fish products and could be used to enhance transparency and fair trade in domestic fisheries. HIGHLIGHTS
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Affiliation(s)
- Qian Tang
- School of Life Sciences, Guizhou Normal University, Guiyang 550001, People's Republic of China
| | - Q I Luo
- School of Life Sciences, Guizhou Normal University, Guiyang 550001, People's Republic of China
| | - Qian Duan
- School of Life Sciences, Guizhou Normal University, Guiyang 550001, People's Republic of China
| | - Lei Deng
- School of Life Sciences, Guizhou Normal University, Guiyang 550001, People's Republic of China
| | - Renyi Zhang
- School of Life Sciences, Guizhou Normal University, Guiyang 550001, People's Republic of China
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8
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Zhang X, Tinacci L, Xie S, Wang J, Ying X, Wen J, Armani A. Caviar products sold on Chinese Business to customer (B2C) online platforms: Labelling assessment supported by molecular identification. Food Control 2022. [DOI: 10.1016/j.foodcont.2021.108370] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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9
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Chang CH, Tsai ML, Huang TT, Wang YC. Authentication of fish species served in conveyor-belt sushi restaurants in Taiwan using DNA barcoding. Food Control 2021. [DOI: 10.1016/j.foodcont.2021.108264] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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10
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Xing RR, Hu RR, Wang N, Zhang JK, Ge YQ, Chen Y. Authentication of sea cucumber products using NGS-based DNA mini-barcoding. Food Control 2021. [DOI: 10.1016/j.foodcont.2021.108199] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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11
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Development of a DNA Metabarcoding Method for the Identification of Bivalve Species in Seafood Products. Foods 2021; 10:foods10112618. [PMID: 34828894 PMCID: PMC8617786 DOI: 10.3390/foods10112618] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 10/20/2021] [Accepted: 10/23/2021] [Indexed: 11/16/2022] Open
Abstract
The production of bivalve species has been increasing in the last decades. In spite of strict requirements for species declaration, incorrect labelling of bivalve products has repeatedly been detected. We present a DNA metabarcoding method allowing the identification of bivalve species belonging to the bivalve families Mytilidae (mussels), Pectinidae (scallops), and Ostreidae (oysters) in foodstuffs. The method, developed on Illumina instruments, targets a 150 bp fragment of mitochondrial 16S rDNA. We designed seven primers (three primers for mussel species, two primers for scallop species and a primer pair for oyster species) and combined them in a triplex PCR assay. In each of eleven reference samples, the bivalve species was identified correctly. In ten DNA extract mixtures, not only the main component (97.0-98.0%) but also the minor components (0.5-1.5%) were detected correctly, with only a few exceptions. The DNA metabarcoding method was found to be applicable to complex and processed foodstuffs, allowing the identification of bivalves in, e.g., marinated form, in sauces, in seafood mixes and even in instant noodle seafood. The method is highly suitable for food authentication in routine analysis, in particular in combination with a DNA metabarcoding method for mammalian and poultry species published recently.
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12
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Abstract
Since their inception, DNA barcodes have become a powerful tool for understanding the biodiversity and biology of aquatic species, with multiple applications in diverse fields such as food security, fisheries, environmental DNA, conservation, and exotic species detection. Nevertheless, most aquatic ecosystems, from marine to freshwater, are understudied, with many species disappearing due to environmental stress, mostly caused by human activities. Here we highlight the progress that has been made in studying aquatic organisms with DNA barcodes, and encourage its further development in assisting sustainable use of aquatic resources and conservation.
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13
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Feldmann F, Ardura A, Blanco-Fernandez C, Garcia-Vazquez E. DNA Analysis Detects Different Mislabeling Trend by Country in European Cod Fillets. Foods 2021; 10:foods10071515. [PMID: 34209308 PMCID: PMC8303571 DOI: 10.3390/foods10071515] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 06/24/2021] [Accepted: 06/27/2021] [Indexed: 11/16/2022] Open
Abstract
Atlantic cod, Gadus morhua, is a highly appreciated fish in European seafood markets and is one of the most substituted fish species in the world. Fraud have been detected in European markets in the last decade, finding different substitute species sold as G. morhua or Atlantic cod on the label. In this study, we analyzed 252 samples of fresh and frozen cod fillets sold in Germany, the Netherlands, and France using DNA barcoding. Different trends were found in different countries: while the level of mislabeling found in Germany and the Netherlands remained at zero in the last years, a significant increase was found in the French markets comparing the current results with previous studies on fillets in France. On the one hand, this mislabeling proves the need to encourage European efforts to control seafood authenticity; on the other, zero mislabeling in two countries shows the success of current European regulations.
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14
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Filonzi L, Vaghi M, Ardenghi A, Rontani PM, Voccia A, Nonnis Marzano F. Efficiency of DNA Mini-Barcoding to Assess Mislabeling in Commercial Fish Products in Italy: An Overview of the Last Decade. Foods 2021; 10:foods10071449. [PMID: 34206502 PMCID: PMC8305242 DOI: 10.3390/foods10071449] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 06/07/2021] [Accepted: 06/15/2021] [Indexed: 11/24/2022] Open
Abstract
The problem of fish traceability in processed products is still an important issue in food safety. Major attention is nowadays dedicated to consumer health and prevention of possible frauds regulated by national and international laws. For this reason, a technical approach is fundamental in revealing mislabeling at different levels. In particular, the use of genetic markers has been standardized and DNA barcoding is considered the gold-standard strategy to examine and prevent species substitution. Considering the richness of available DNA databases, it is nowadays possible to rapidly reach a reliable taxonomy at the species level. Among different approaches, an innovative method based on DNA mini barcoding has recently been proposed at an international level. Starting from this evidence, we herein illustrate an investigation dealing with the evolution of this topic in Italy over the last decade. The molecular analysis of 71 commercial fish samples based on mini-COI sequencing with two different primer sets reached an amplification success rate of 87.3 and 97.2%. The investigation revealed four major frauds (5.8%) and four minor ones (5.8%). Results highlighted a decrease in incorrect labeling in Italy from 32% to 11.6% over the last decade, although a recurrent involvement of “endangered” species sensu IUCN was still observed.
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15
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Xu W, Fu M, Huang M, Cui X, Li Y, Cao M, Wang L, Xiong X, Xiong X. Duplex real-time PCR combined with melting curve analysis for rapid detection of Atlantic salmon (Salmo salar) and rainbow trout (Oncorhynchus mykiss). J Food Compost Anal 2021. [DOI: 10.1016/j.jfca.2020.103765] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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16
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Chen PY, Ho CW, Chen AC, Huang CY, Liu TY, Liang KH. Investigating seafood substitution problems and consequences in Taiwan using molecular barcoding and deep microbiome profiling. Sci Rep 2020; 10:21997. [PMID: 33319856 PMCID: PMC7738519 DOI: 10.1038/s41598-020-79070-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 12/03/2020] [Indexed: 11/23/2022] Open
Abstract
Seafood is commonly seen in cuisines of the Asia–Pacific regions. The rates and consequences of seafood substitution frauds in Taiwan were elusive. To address this, we conducted a consumer-centered study, collecting seafood dishes and cooking materials from restaurants and markets easily accessible to the residents in Taiwan. Seafood substitutions were evaluated using DNA barcodes in the mitochondrial MT-CO1 gene. Among the 127 samples collected, 24 samples were mislabeled (18.9%, 95% Confidence interval [CI] = [12.5–26.8%]). The mislabel rates vary in different fish and product types (snapper [84.6%, 54.6–98.1%], cod [25%, 5.5–57.2%], swordfish [16.7%, 2.1–48.4%], cobia [16.7%, 0.4–64.1%], surimi products [100.0%]). A deep microbiome profiling was performed in 8 correctly-labeled conventional sushi and 2 tilapia sashimi mislabeled as snapper, with sequencing depths greater than 100,000 reads for every sample. The relative abundance of Pseudomonas genus is significantly higher in tilapia sashimi than in conventional sushi (P = 0.044). In conclusion, the gross seafood mislabel rate in Taiwan is 18.9% (12.5–26.8%). Snapper, cod and surimi products are particularly vulnerable to fraudulent substitutions. The high abundance of Pseudomonas in tilapia sashimi mislabeled as snapper unveils a potential health issue pertaining to the consumption of raw mislabeled seafood.
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Affiliation(s)
- Pei-Ying Chen
- Institute of Food Safety and Health Risk Assessment, National Yang-Ming University, No. 155, Section 2, Linong St, Beitou District, Taipei City, 112, Taiwan
| | - Cheng-Wei Ho
- Institute of Food Safety and Health Risk Assessment, National Yang-Ming University, No. 155, Section 2, Linong St, Beitou District, Taipei City, 112, Taiwan
| | - An-Chi Chen
- Department of Health, Taipei City Government, Taipei, Taiwan
| | - Ching-Yi Huang
- Department of Health, Taipei City Government, Taipei, Taiwan
| | - Tsung-Yun Liu
- Institute of Food Safety and Health Risk Assessment, National Yang-Ming University, No. 155, Section 2, Linong St, Beitou District, Taipei City, 112, Taiwan. .,Department of Medical Research, Taipei Veterans General Hospital, Taipei, Taiwan.
| | - Kung-Hao Liang
- Institute of Food Safety and Health Risk Assessment, National Yang-Ming University, No. 155, Section 2, Linong St, Beitou District, Taipei City, 112, Taiwan. .,Department of Medical Research, Taipei Veterans General Hospital, Taipei, Taiwan. .,Institute of Biomedical Informatics, National Yang-Ming University, Taipei, Taiwan.
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17
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Gunnels T, Creswell M, McFerrin J, Whittall JB. The ITS region provides a reliable DNA barcode for identifying reishi/lingzhi (Ganoderma) from herbal supplements. PLoS One 2020; 15:e0236774. [PMID: 33180770 PMCID: PMC7660467 DOI: 10.1371/journal.pone.0236774] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Accepted: 10/28/2020] [Indexed: 11/18/2022] Open
Abstract
The dietary supplement industry is rapidly growing yet, a recent study revealed that up to 60% of supplements may have substituted ingredients, some of which can be harmful contaminants or additives. When ingredients cannot be verified morphologically or biochemically, DNA barcoding complemented with a molecular phylogenetic analysis can be a powerful method for species authentication. We employed a molecular phylogenetic analysis for species authentication of the commonly used fungal supplement, reishi (Ganoderma lingzhi), by amplifying and sequencing the nuclear ribosomal internal transcribed spacer regions (ITS) with genus-specific primers. PCR of six powdered samples and one dried sample all sold as G. lucidum representing independent suppliers produced single, strong amplification products in the expected size-range for Ganoderma. Both best-hit BLAST and molecular phylogenetic analyses clearly identified the presence of G. lingzhi DNA in all seven herbal supplements. We detected variation in the ITS sequences among our samples, but all herbal supplement samples fall within a large clade of G. lingzhi ITS sequences. ITS-based phylogenetic analysis is a successful and cost-effective method for DNA-based species authentication that could be used in the herbal supplement industry for this and other fungal and plant species that are otherwise difficult to identify.
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Affiliation(s)
- Tess Gunnels
- Department of Biology, Santa Clara University, Santa Clara, California, United States of America
- Oregon’s Wild Harvest, Redmond, Oregon, United States of America
| | - Matthew Creswell
- Oregon’s Wild Harvest, Redmond, Oregon, United States of America
| | - Janis McFerrin
- Oregon’s Wild Harvest, Redmond, Oregon, United States of America
| | - Justen B. Whittall
- Department of Biology, Santa Clara University, Santa Clara, California, United States of America
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18
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Sharma L, Watts E, Singh P. High resolution real-time PCR melting curve assay for identification of top five Penaeidae shrimp species. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.109983] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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19
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DNA-based techniques for seafood species authentication. ADVANCES IN FOOD AND NUTRITION RESEARCH 2020; 95:207-255. [PMID: 33745513 DOI: 10.1016/bs.afnr.2020.09.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
Global trade of seafood has increased in the last decade, leading to significant concerns associated with seafood fraud. Seafood fraud involves the intentional misrepresentation of fish or shellfish for the purpose of economic gain and includes acts such as species substitution, illegal transshipment, overtreatment/short weighting, and mislabeling country of origin or production method. These fraudulent acts have had economic, environmental, and public health consequences on a global level. DNA-based techniques for seafood authentication are utilized by regulatory agencies and can be employed as part of a food fraud risk mitigation plan. This chapter will focus specifically on the use of DNA-based methods for the detection of seafood species substitution. Various methods have been developed for DNA-based species identification of seafood, including polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP), species-specific PCR, real-time PCR, Sanger sequencing, microarrays, and high-resolution melting (HRM). Emerging techniques for seafood authentication include droplet digital PCR, isothermal amplification, PCR-enzyme-linked immunosorbent assay (ELISA), and high-throughput or next-generation sequencing. Some of these DNA-based methods target specific species, such as real-time PCR and droplet digital PCR, while other methods allow for simultaneous differentiation of a wide range of fish species, including Sanger sequencing and high-throughput sequencing. This chapter will begin with an introduction on seafood fraud and species substitution, followed by an analysis of the main DNA-based authentication methods and emerging techniques for species identification.
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20
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Xiong X, Huang M, Xu W, Li Y, Cao M, Xiong X. Rainbow trout (Oncorhynchus mykiss) identification in processed fish products using loop-mediated isothermal amplification and polymerase chain reaction assays. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2020; 100:4696-4704. [PMID: 32458471 DOI: 10.1002/jsfa.10526] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 05/18/2020] [Accepted: 05/26/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Financial loss and health risk caused by the substitution of rainbow trout for other salmonid species have become a common issue around the world. The situation could be further exacerbated in China by the 'abused' common name of San Wen Yu (the corresponding Chinese ideogram ) for salmonids, considering the absence of a standardized naming system for seafood species. To prevent such episodes, the present study aimed to develop novel loop-mediated isothermal amplification (LAMP) and polymerase chain reaction (PCR) assays targeting the mitochondrial cytochrome b gene for rapid identification of rainbow trout in processed fish products. RESULTS Rainbow trout-specific primers (LAMP and PCR) were designed, and the specificity against 23 different fish species was confirmed. The minimum amount of detectable DNA for LAMP assay reached 500 pg, up to 10-fold less than for PCR assay. In addition to agarose gel electrophoresis, naked-eye inspection of the LAMP-positive samples using SYBR Green I under daylight or ultraviolet light was also validated. Finally, commercial San Wen Yu products made from rainbow trout could be accurately identified using the newly developed LAMP and PCR assays, further cross-confirmed by mini DNA barcoding and neighbor-joining dendrograms. CONCLUSIONS The LAMP and PCR assays established in the study allow a fast and accurate identification of rainbow trout in processed fish products. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Xiong Xiong
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, China
| | - Manhong Huang
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, China
| | - Wenjie Xu
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, China
| | - Yi Li
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, China
| | - Min Cao
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, China
| | - Xiaohui Xiong
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, China
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21
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Fernandes TJR, Amaral JS, Mafra I. DNA barcode markers applied to seafood authentication: an updated review. Crit Rev Food Sci Nutr 2020; 61:3904-3935. [DOI: 10.1080/10408398.2020.1811200] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
| | - Joana S. Amaral
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Bragança, Portugal
| | - Isabel Mafra
- REQUIMTE-LAQV, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal
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22
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Adibah A, Syazwan S, Haniza Hanim M, Badrul Munir M, Intan Faraha A, Siti Azizah M. Evaluation of DNA barcoding to facilitate the authentication of processed fish products in the seafood industry. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.109585] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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23
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Xing B, Zhang Z, Sun R, Wang Y, Lin M, Wang C. Mini-DNA barcoding for the identification of commercial fish sold in the markets along the Taiwan Strait. Food Control 2020. [DOI: 10.1016/j.foodcont.2020.107143] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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24
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Xiong X, Yuan F, Huang M, Cao M, Xiong X. Development of a rapid method for codfish identification in processed fish products based on SYBR Green real‐time PCR. Int J Food Sci Technol 2020. [DOI: 10.1111/ijfs.14446] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Xiong Xiong
- College of Food Science and Light Industry Nanjing Tech University Nanjing 211800 China
| | - Fangying Yuan
- College of Food Science and Light Industry Nanjing Tech University Nanjing 211800 China
| | - Manhong Huang
- College of Food Science and Light Industry Nanjing Tech University Nanjing 211800 China
| | - Min Cao
- College of Food Science and Light Industry Nanjing Tech University Nanjing 211800 China
| | - Xiaohui Xiong
- College of Food Science and Light Industry Nanjing Tech University Nanjing 211800 China
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25
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Xiong X, Huang M, Xu W, Cao M, Li Y, Xiong X. Tracing Atlantic Salmon (Salmo salar) in Processed Fish Products Using the Novel Loop-Mediated Isothermal Amplification (LAMP) and PCR Assays. FOOD ANAL METHOD 2020. [DOI: 10.1007/s12161-020-01738-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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26
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Shi R, Xiong X, Huang M, Xu W, Li Y, Cao M, Xiong X. High resolution melting (HRM) analysis of a 12S rRNA mini barcode as a novel approach for codfish species authentication in processed fish products. Eur Food Res Technol 2020. [DOI: 10.1007/s00217-020-03456-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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27
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Tinacci L, Guardone L, Castro-Palomino Rubio J, Riina M, Stratev D, Guidi A, Armani A. Labelling compliance and species identification of herring products sold at large scale retail level within the Italian market. Food Control 2019. [DOI: 10.1016/j.foodcont.2019.106707] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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28
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Xing RR, Hu RR, Han JX, Deng TT, Chen Y. DNA barcoding and mini-barcoding in authenticating processed animal-derived food: A case study involving the Chinese market. Food Chem 2019; 309:125653. [PMID: 31670116 DOI: 10.1016/j.foodchem.2019.125653] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 08/14/2019] [Accepted: 10/05/2019] [Indexed: 11/16/2022]
Abstract
This study used DNA barcoding and DNA mini-barcoding to test a variety of animal-derived food products sold in the Chinese market for potential mislabeling. Samples (52) including meat, poultry, and fish purchased from retail and online sources were examined. Regions of cytochrome C oxidase I (COI) gene (~650 bp) and 16S rRNA (~220 bp) were used as full- and mini-barcode markers, respectively. Approximately 94% (49 of 52) of the samples generated barcode sequences. The failure rate for full COI full-barcodes was 44%, but we obtained the 16S rRNA mini-barcode from 87% of the COI-failed cases. Overall, the survey revealed that 23% (12 of 52) of animal-derived products were mislabeled and, in most cases, contain undeclared species. Thus, regulatory measures and continuous monitoring for mislabeling of animal-derived products should be conducted.
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Affiliation(s)
- Ran-Ran Xing
- Agro-product Safety Research Center, Chinese Academy of Inspection and Quarantine, Beijing 100176, China
| | - Ran-Ran Hu
- Agro-product Safety Research Center, Chinese Academy of Inspection and Quarantine, Beijing 100176, China; College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Jian-Xun Han
- Agro-product Safety Research Center, Chinese Academy of Inspection and Quarantine, Beijing 100176, China; College of Agriculture and Biotechnology, Zhejiang University, Zhejiang 310058, China
| | - Ting-Ting Deng
- Agro-product Safety Research Center, Chinese Academy of Inspection and Quarantine, Beijing 100176, China; College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Ying Chen
- Agro-product Safety Research Center, Chinese Academy of Inspection and Quarantine, Beijing 100176, China.
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29
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Xiong X, Yuan F, Huang M, Lu L, Xiong X, Wen J. DNA Barcoding Revealed Mislabeling and Potential Health Concerns with Roasted Fish Products Sold across China. J Food Prot 2019; 82:1200-1209. [PMID: 31233362 DOI: 10.4315/0362-028x.jfp-18-514] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
HIGHLIGHTS 75.5% of products were identified as species outside the expected family. Six products were identified as containing multiple species from distinct families. Species from distinct families were verified in products of same brand for six groups. Identification of potentially toxic pufferfish species highlighted health concerns.
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Affiliation(s)
- Xiong Xiong
- 1 College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211800, People's Republic of China
| | - Fangying Yuan
- 1 College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211800, People's Republic of China
| | - Manhong Huang
- 1 College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211800, People's Republic of China
| | - Lixia Lu
- 1 College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211800, People's Republic of China
| | - Xiaohui Xiong
- 1 College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211800, People's Republic of China
| | - Jing Wen
- 2 Department of Biology, Lingnan Normal University, Zhanjiang, 524048, People's Republic of China
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30
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Xing RR, Wang N, Hu RR, Zhang JK, Han JX, Chen Y. Application of next generation sequencing for species identification in meat and poultry products: A DNA metabarcoding approach. Food Control 2019. [DOI: 10.1016/j.foodcont.2019.02.034] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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31
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Hossain MAM, Uddin SMK, Chowdhury ZZ, Sultana S, Johan MR, Rohman A, Erwanto Y, Ali ME. Universal mitochondrial 16s rRNA biomarker for mini-barcode to identify fish species in Malaysian fish products. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2019; 36:493-506. [PMID: 30865559 DOI: 10.1080/19440049.2019.1580389] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Mislabelling in fish products is a highly significant emerging issue in world fish trade in terms of health and economic concerns. DNA barcoding is an efficient sequencing-based tool for detecting fish species substitution but due to DNA degradation, it is in many cases difficult to amplify PCR products of the full-length barcode marker (~650 bp), especially in severely processed products. In the present study, a pair of universal primers targeting a 198 bp sequence of the mitochondrial 16s rRNA gene was designed for identification of fish species in the processed fish products commonly consumed in Malaysia. The specificity of the universal primers was tested by both in-silico studies using bioinformatics software and through cross-reaction assessment by practical PCR experiments against the DNA from 38 fish species and 22 other non-target species (animals and plants) and found to be specific for all the tested fish species. To eliminate the possibility of any false-negative detection, eukaryotic endogenous control was used during specificity evaluation. The developed primer set was validated with various heat-treated (boiled, autoclaved and microwaved) fish samples and was found to show high stability under all processing conditions. The newly developed marker successfully identified 92% of the tested commercial fish products with 96-100% sequence similarities. This study reveals a considerable degree of species mislabelling (20.8%); 5 out of 24 fish products were found to be mislabelled. The new marker developed in this work is a reliable tool to identify fish species even in highly processed products and might be useful in detecting fish species substitution thus protecting consumers' health and economic interests.
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Affiliation(s)
- M A Motalib Hossain
- a Nanotechnology and Catalysis Research Center, Institute of Graduate Studies , University of Malaya , Kuala Lumpur , Malaysia
| | - Syed Muhammad Kamal Uddin
- a Nanotechnology and Catalysis Research Center, Institute of Graduate Studies , University of Malaya , Kuala Lumpur , Malaysia
| | - Zaira Zaman Chowdhury
- a Nanotechnology and Catalysis Research Center, Institute of Graduate Studies , University of Malaya , Kuala Lumpur , Malaysia
| | - Sharmin Sultana
- a Nanotechnology and Catalysis Research Center, Institute of Graduate Studies , University of Malaya , Kuala Lumpur , Malaysia
| | - Mohd Rafie Johan
- a Nanotechnology and Catalysis Research Center, Institute of Graduate Studies , University of Malaya , Kuala Lumpur , Malaysia
| | - Abdul Rohman
- b Faculty of Pharmacy , Universitas Gadjah Mada , Yogyakarta , Indonesia
| | - Yuny Erwanto
- c Department of Animal Products Technology, Faculty of Animal Science , Universitas Gadjah Mada , Yogyakarta , Indonesia
| | - Md Eaqub Ali
- a Nanotechnology and Catalysis Research Center, Institute of Graduate Studies , University of Malaya , Kuala Lumpur , Malaysia.,d Centre for Research in Biotechnology for Agriculture , University of Malaya , Kuala Lumpur , Malaysia
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32
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Chen KC, Zakaria D, Altarawneh H, Andrews GN, Ganesan GS, John KM, Khan S, Ladumor H. DNA barcoding of fish species reveals low rate of package mislabeling in Qatar. Genome 2019; 62:69-76. [DOI: 10.1139/gen-2018-0101] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
DNA barcoding technique has made it possible to authenticate various species used for food and medicinal purposes. In the identification of seafood species, studies are concentrated in North America, Europe, and Asia. Elsewhere, including countries in the Middle East and North Africa, studies of this sort are scarce. This study focuses on packaged fresh or minimally processed fish fillet available at eight major supermarket chains in Qatar. A cocktail of eight primers attached with M13 tails established for fish species identification was adopted to facilitate PCR and sequencing. Sequences were compared with those available in the Barcode of Life Databases (BOLD Systems) and BLAST in NCBI databases. Among the 62 unique fish packages with resolved sequences, only three are confirmed to be mislabeled, at a rate of about 5%. Two of the substituted species are high value items while the third species was replaced by another, equally low-cost species. The relatively low rate of mislabeling in the samples is perhaps a result of strict local food safety regulations, which may have led to high consistency between the package labels and their contents.
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Affiliation(s)
- Kuei-Chiu Chen
- Department of Premedical Education, Weill Cornell Medicine-Qatar, Education City, Qatar Foundation, P.O. Box 24144, Doha, Qatar
| | - Dalia Zakaria
- Department of Premedical Education, Weill Cornell Medicine-Qatar, Education City, Qatar Foundation, P.O. Box 24144, Doha, Qatar
| | - Heba Altarawneh
- Department of Medical Education, Weill Cornell Medicine-Qatar, Education City, Qatar Foundation, P.O. Box 24144, Doha, Qatar
| | - Gabriala Nathasha Andrews
- Department of Medical Education, Weill Cornell Medicine-Qatar, Education City, Qatar Foundation, P.O. Box 24144, Doha, Qatar
| | - Gowrii S. Ganesan
- Department of Medical Education, Weill Cornell Medicine-Qatar, Education City, Qatar Foundation, P.O. Box 24144, Doha, Qatar
| | - Karen M. John
- Department of Medical Education, Weill Cornell Medicine-Qatar, Education City, Qatar Foundation, P.O. Box 24144, Doha, Qatar
| | - Sarah Khan
- Department of Medical Education, Weill Cornell Medicine-Qatar, Education City, Qatar Foundation, P.O. Box 24144, Doha, Qatar
| | - Heta Ladumor
- Department of Medical Education, Weill Cornell Medicine-Qatar, Education City, Qatar Foundation, P.O. Box 24144, Doha, Qatar
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33
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Spielmann G, Diedrich J, Haszprunar G, Busch U, Huber I. Comparison of three DNA marker regions for identification of food relevant crustaceans of the order Decapoda. Eur Food Res Technol 2018. [DOI: 10.1007/s00217-018-3199-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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34
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Dobrovolny S, Blaschitz M, Weinmaier T, Pechatschek J, Cichna-Markl M, Indra A, Hufnagl P, Hochegger R. Development of a DNA metabarcoding method for the identification of fifteen mammalian and six poultry species in food. Food Chem 2018; 272:354-361. [PMID: 30309555 DOI: 10.1016/j.foodchem.2018.08.032] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 02/16/2018] [Accepted: 08/08/2018] [Indexed: 01/16/2023]
Abstract
Meat products are prone to adulteration by the replacement of meat from more expensive animal species with meat from cheaper sources. We present a DNA metabarcoding method allowing the identification and differentiation of 15 mammalian and six poultry species in foodstuffs. The method, developed on the MiSeq® platform, targets a mitochondrial 16S rDNA region recently found to be suitable for the differentiation of 300 mammalian species. We designed a novel primer pair for poultry and applied it in combination with the primer pair for mammalian species in a duplex assay. The applicability of the method was investigated by analysing DNA extracts from muscle, DNA extract mixtures and extracts from model sausages. Our results indicated that the species of interest can be identified, differentiated and detected down to a proportion of 0.1%. Since 96 samples can be sequenced in one run, the method has high potential for application in routine analysis.
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Affiliation(s)
- Stefanie Dobrovolny
- Austrian Agency for Health and Food Safety, Institute for Food Safety, Department of Molecular Biology and Microbiology, Spargelfeldstraße 191, 1220 Vienna, Austria.
| | - Marion Blaschitz
- Austrian Agency for Health and Food Safety, Institute for Medical Microbiology and Hygiene - Center for Anthropogenic Infections, Department of Clinical Molecular Biology, Währinger Straße 25a, 1090 Vienna, Austria.
| | - Thomas Weinmaier
- Division of Computational Systems Biology, Department of Microbiology and Ecosystem Science, University of Vienna, Althanstraße 14, 1090 Vienna, Austria.
| | - Jan Pechatschek
- Siemens Aktiengesellschaft Österreich, RC-AT EM DG SWS GC NMS, Siemensstraße 90, 1210 Vienna, Austria.
| | - Margit Cichna-Markl
- Department of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Währinger Straße 38, 1090 Vienna, Austria.
| | - Alexander Indra
- Austrian Agency for Health and Food Safety, Institute for Medical Microbiology and Hygiene, Währinger Straße 25a, 1090 Vienna, Austria.
| | - Peter Hufnagl
- Austrian Agency for Health and Food Safety, Institute for Medical Microbiology and Hygiene - Center for Anthropogenic Infections, Department of Clinical Molecular Biology, Währinger Straße 25a, 1090 Vienna, Austria.
| | - Rupert Hochegger
- Austrian Agency for Health and Food Safety, Institute for Food Safety, Department of Molecular Biology and Microbiology, Spargelfeldstraße 191, 1220 Vienna, Austria.
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Tinacci L, Stratev D, Vashin I, Chiavaccini I, Susini F, Guidi A, Armani A. Seafood labelling compliance with European legislation and species identification by DNA barcoding: A first survey on the Bulgarian market. Food Control 2018. [DOI: 10.1016/j.foodcont.2018.03.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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36
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37
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Xiong X, Yao L, Ying X, Lu L, Guardone L, Armani A, Guidi A, Xiong X. Multiple fish species identified from China's roasted Xue Yu fillet products using DNA and mini-DNA barcoding: Implications on human health and marine sustainability. Food Control 2018. [DOI: 10.1016/j.foodcont.2017.12.035] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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38
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Universal mini COI barcode for the identification of fish species in processed products. Food Res Int 2017; 105:19-28. [PMID: 29433207 DOI: 10.1016/j.foodres.2017.10.065] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 10/27/2017] [Accepted: 10/28/2017] [Indexed: 12/15/2022]
Abstract
Species substitution, the use of a low value fish in place of a high value fish, is the biggest problem in international trade and the leading cause of fraud in the fisheries arena sector. Current DNA barcoding systems have partly solved this problem but also failed in many instances to amplify PCR targets from highly processed products because of the degradation of a longer barcode marker (~650bp). In the present study, a novel mini barcode marker (295bp) was developed to discriminate fish species in raw and processed states forms. The barcode primers were cross-tested against 33 fish species and 15 other animal species and found to be universal for all the tested fish varieties. When 20 commercial fish products of five different categories were screened, all commercial fish sample yielded positive bands for the novel fish barcode. PCR product was sequenced to retrieve the species IDs that reflected 55% (11/20) of Malaysian fish products were mislabeled.
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