1
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Gao L, Du B, Ma Q, Ma Y, Yu W, Li T, Liu Y, Yuan G. Multiplex-PCR method application to identify duck blood and its adulterated varieties. Food Chem 2024; 444:138673. [PMID: 38330615 DOI: 10.1016/j.foodchem.2024.138673] [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: 09/25/2023] [Revised: 12/25/2023] [Accepted: 02/02/2024] [Indexed: 02/10/2024]
Abstract
This study applied and validated the Multiplex-PCR method to identify the authenticity of duck blood and four common adulterated animal blood varieties. To this end, the genomic DNAs of duck blood and its counterfeit products were extracted using an efficient high-throughput extraction method. Specific primers were designed using the cytochrome b gene. The reaction system and conditions of a multiplex (namely, Five-plex) PCR were optimized, and the proposed methodology was verified, proving its good specificity, repeatability, and sensitivity. The Five-plex PCR system detected nine duck blood samples sold in the local market, revealing the adulteration of duck blood products. The Multiplex-PCR system can accurately and quickly detect adulterated animal blood in duck blood products, effectively finding counterfeits and identifying the authenticity of genuine duck blood products.
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Affiliation(s)
- Lijun Gao
- School of Medical Technology, Beihua University, Jilin 132013, China
| | - Bingyang Du
- Central Hospital of Jilin, Jilin 132011, China
| | - Qiuhe Ma
- School of Medical Technology, Beihua University, Jilin 132013, China
| | - Yuhe Ma
- School of Medical Technology, Beihua University, Jilin 132013, China
| | - Wenying Yu
- School of Medical Technology, Beihua University, Jilin 132013, China
| | - Tao Li
- School of Medical Technology, Beihua University, Jilin 132013, China
| | - Yue Liu
- School of Medical Technology, Beihua University, Jilin 132013, China
| | - Guangxin Yuan
- School of Pharmacy, Beihua University, Jilin 132013, China.
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2
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Griffiths KR, McLaughlin JLH, Hall F, Partis L, Hansen SC, Tulloch R, Burke DG. Development of Seven New dPCR Animal Species Assays and a Reference Material to Support Quantitative Ratio Measurements of Food and Feed Products. Foods 2023; 12:3839. [PMID: 37893732 PMCID: PMC10606771 DOI: 10.3390/foods12203839] [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: 09/17/2023] [Revised: 10/13/2023] [Accepted: 10/16/2023] [Indexed: 10/29/2023] Open
Abstract
Laboratory testing methods to confirm the identity of meat products and eliminate food fraud regularly rely on PCR amplification of extracted DNA, with most published assays detecting mitochondrial sequences, providing sensitive presence/absence results. By targeting single-copy nuclear targets instead, relative quantification measurements are achievable, providing additional information on the proportions of meat species detected. In this Methods paper, new assays for horse, donkey, duck, kangaroo, camel, water buffalo and crocodile have been developed to expand the range of species that can be quantified, and a previously published reference assay targeting the myostatin gene has been modified to include marsupials and reptiles. The accuracy of this ratio measurement approach was demonstrated using dPCR with mixtures of meat DNA down to 0.1%. However, the limit of detection (LOD) of this approach is not just determined by the assay targets, but by the samples themselves, with food or feed ingredients and processing impacting the DNA yield and integrity. In routine testing settings, the myostatin assay can provide multiple quality control roles, including monitoring the yield and purity of extracted DNA, identifying the presence of additional meats not detected by the suite of species-specific assays and potentially estimating a sample-specific LOD based on measured copy numbers of the myostatin target. In addition to the myostatin positive control assay, a synthetic DNA reference material (RM) has been designed, containing PCR targets for beef, pork, sheep, chicken, goat, kangaroo, horse, water buffalo and myostatin, to be used as a positive template control. The availability of standardised measurement methods and associated RMs significantly improves the reliability, comparability and transparency of laboratory testing, leading to greater confidence in results.
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Affiliation(s)
- Kate R. Griffiths
- Bioanalysis Section, National Measurement Institute, Lindfield, Sydney, NSW 2070, Australia
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3
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Zenke P, Zorkóczy OK, Lehotzky P, Ózsvári L, Pádár Z. Molecular Sexing and Species Detection of Antlered European Hunting Game for Forensic Purposes. Animals (Basel) 2022; 12:ani12030246. [PMID: 35158570 PMCID: PMC8833381 DOI: 10.3390/ani12030246] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 01/14/2022] [Accepted: 01/18/2022] [Indexed: 11/25/2022] Open
Abstract
Simple Summary The reasons behind illegal hunting can be widely different. There are also tricky methods that hunters use in the attempt to legalize their illegally-acquired trophies, specifically, introducing them in later seasons, and registering the eviscerated corpses as hinds. During certain periods of the year, hunters are only able to acquire a license for the shooting of female deer exclusively, with the male-hunting season beginning later. The eviscerated and decapitated carcass of the animal delivered to the wild game processing house cold store can be falsely registered as a female based on phenotype. If the hunting association suspects that the animal’s sex has been falsely reported, a forensic genetic investigation can be proposed. In other criminal events, there are no carcasses at all. When several biological remains left on the crime scene need to be tested, a fast and cost-effective detection of a given species or species-group might be substantial before subsequent analysis. Therefore, sex and species detection can provide an early-stage credibility to the resolution of illegal activities related to trophy animals, and additionally may disclose potential poaching disputes. Abstract Molecular sexing techniques are widely applied in conservation biology, although the range of forensically validated methods is fairly limited. The primary aim of this work was to develop forensically validated assays, using two PCR panels for sex and species assignment for the abundant antlered European game species: red deer (Cervus elaphus), roe deer (Capreolus capreolus) and fallow deer (Dama dama). Segments of the SRY and Amelogenin X/Y genes for sex determination, additionally species-specific cytochrome b regions for species detection were targeted and separately amplified in two multiplex reactions. These assays can reliably analyze trace amounts of DNA. The results of both can easily be visualized and interpreted practically, either on agarose gel or by capillary electrophoresis. These simple, fast molecular assays are able to affect the early-stage resolution of disputed or unsolved poaching cases, without the need of individualization or sequencing of forensic samples.
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Affiliation(s)
- Petra Zenke
- Department of Animal Breeding and Genetics, University of Veterinary Medicine Budapest, István u. 2., H-1078 Budapest, Hungary;
- Correspondence:
| | - Orsolya Krisztina Zorkóczy
- Department of Animal Breeding and Genetics, University of Veterinary Medicine Budapest, István u. 2., H-1078 Budapest, Hungary;
| | - Pál Lehotzky
- Hungarian Hunters’ National Chamber, Medve u. 34-40., H-1027 Budapest, Hungary;
| | - László Ózsvári
- Department of Veterinary Forensics and Economics, University of Veterinary Medicine Budapest, István u. 2., H-1078 Budapest, Hungary;
| | - Zsolt Pádár
- Department of Forensic Medicine, Medical School, University of Pécs, Szigeti út 12., H-7624 Pecs, Hungary;
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4
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Druml B, Uhlig S, Simon K, Frost K, Hettwer K, Cichna-Markl M, Hochegger R. Real-Time PCR Assay for the Detection and Quantification of Roe Deer to Detect Food Adulteration-Interlaboratory Validation Involving Laboratories in Austria, Germany, and Switzerland. Foods 2021; 10:foods10112645. [PMID: 34828926 PMCID: PMC8623729 DOI: 10.3390/foods10112645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 10/25/2021] [Accepted: 10/26/2021] [Indexed: 11/16/2022] Open
Abstract
Game meat products are particularly prone to be adulterated by replacing game meat with cheaper meat species. Recently, we have presented a real-time polymerase chain reaction (PCR) assay for the identification and quantification of roe deer in food. Quantification of the roe deer content in % (w/w) was achieved relatively by subjecting the DNA isolates to a reference real-time PCR assay in addition to the real-time PCR assay for roe deer. Aiming at harmonizing analytical methods for food authentication across EU Member States, the real-time PCR assay for roe deer has been tested in an interlaboratory ring trial including 14 laboratories from Austria, Germany, and Switzerland. Participating laboratories obtained aliquots of DNA isolates from a meat mixture containing 24.8% (w/w) roe deer in pork, roe deer meat, and 12 meat samples whose roe deer content was not disclosed. Performance characteristics included amplification efficiency, level of detection (LOD95%), repeatability, reproducibility, and accuracy of quantitative results. With a relative reproducibility standard deviation ranging from 13.35 to 25.08% (after outlier removal) and recoveries ranging from 84.4 to 114.3%, the real-time PCR assay was found to be applicable for the detection and quantification of roe deer in raw meat samples to detect food adulteration.
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Affiliation(s)
- Barbara Druml
- Department of Molecular Biology and Microbiology, Institute for Food Safety Vienna, Austrian Agency for Health and Food Safety (AGES), Spargelfeldstraße 191, 1220 Vienna, Austria;
- Department of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Währinger Straße 38, 1090 Vienna, Austria
| | - Steffen Uhlig
- QuoData GmbH, Prellerstraße 14, 01309 Dresden, Germany; (S.U.); (K.S.); (K.F.); (K.H.)
| | - Kirsten Simon
- QuoData GmbH, Prellerstraße 14, 01309 Dresden, Germany; (S.U.); (K.S.); (K.F.); (K.H.)
| | - Kirstin Frost
- QuoData GmbH, Prellerstraße 14, 01309 Dresden, Germany; (S.U.); (K.S.); (K.F.); (K.H.)
| | - Karina Hettwer
- QuoData GmbH, Prellerstraße 14, 01309 Dresden, Germany; (S.U.); (K.S.); (K.F.); (K.H.)
| | - Margit Cichna-Markl
- Department of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Währinger Straße 38, 1090 Vienna, Austria
- Correspondence: (M.C.-M.); (R.H.)
| | - Rupert Hochegger
- Department of Molecular Biology and Microbiology, Institute for Food Safety Vienna, Austrian Agency for Health and Food Safety (AGES), Spargelfeldstraße 191, 1220 Vienna, Austria;
- Correspondence: (M.C.-M.); (R.H.)
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5
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Yu N, Han J, Deng T, Chen L, Zhang J, Xing R, Wang P, Zhao G, Chen Y. A Novel Analytical Droplet Digital PCR Method for Identification and Quantification of Raw Health Food Material Powder from Panax notoginseng. FOOD ANAL METHOD 2020. [DOI: 10.1007/s12161-020-01887-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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6
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Species Identification of Red Deer ( Cervus elaphus), Roe Deer ( Capreolus capreolus), and Water Deer ( Hydropotes inermis) Using Capillary Electrophoresis-Based Multiplex PCR. Foods 2020; 9:foods9080982. [PMID: 32718080 PMCID: PMC7466337 DOI: 10.3390/foods9080982] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 07/22/2020] [Accepted: 07/22/2020] [Indexed: 12/26/2022] Open
Abstract
To provide consumers correct information on meat species, specific and sensitive detection methods are needed. Thus, we developed a capillary electrophoresis-based multiplex PCR assay to simultaneously detect red deer (Cervus elaphus), roe deer (Capreolus capreolus), and water deer (Hydropotes inermis). Specific primer sets for these three species were newly designed. Each primer set only amplified target species without any reactivity against non-target species. To identify multiple targets in a single reaction, multiplex PCR was optimized and combined with capillary electrophoresis to increase resolution and accuracy for the detection of multiple targets. The detection levels of this assay were 0.1 pg for red deer and roe deer and 1 pg for water deer. In addition, its applicability was demonstrated using various concentrations of meat DNA mixtures. Consequently, as low as 0.1% of the target species was detectable using the developed method. This capillary electrophoresis-based multiplex PCR assay for simultaneous detection of three types of deer meat could authenticate deer species labeled on products, thus protecting consumers from meat adulteration.
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7
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Dual-output toehold-mediated strand displacement amplification for sensitive homogeneous electrochemical detection of specie-specific DNA sequences for species identification. Biosens Bioelectron 2020; 161:112256. [PMID: 32365011 DOI: 10.1016/j.bios.2020.112256] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 04/24/2020] [Accepted: 04/27/2020] [Indexed: 12/11/2022]
Abstract
The determination of specie-specific DNA sequences is a key factor for identification of animal species and detection of meat adulteration. Herein, a simple homogeneous electrochemical biosensor was developed for sensitive detection of specie-specific DNA sequences from meat products based on high efficient and specific dual-output toehold-mediated strand displacement (TMSD). After incubation with target DNA, large amount of methylene blue (electrochemical signal molecule) labeled probes (MB-P) were released from preformed DNA duplex structures by the process of dual-output TMSD amplification. The free MB-P could be further digested by Exonuclease I, and the enzymatic products contain little negative charge could diffuse to the surface of indium tin oxide electrode, generating significantly electrochemical signal. As a result, the designed biosensor showed a broad dynamic range from 0.01 pM to 100 pM, with a low detection limit of 8.2 fM, and ideal selectivity and reproducibility. Meanwhile, the approach exhibited acceptable accuracy for the detection of specie-specific DNA sequences, and possessed the potential application for the identification of animal species from meat products.
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8
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Köppel R, van Velsen F, Ganeshan A, Pietsch K, Weber S, Graf C, Murmann P, Hochegger R, Licina A. Multiplex real-time PCR for the detection and quantification of DNA from chamois, roe, deer, pork and beef. Eur Food Res Technol 2020. [DOI: 10.1007/s00217-020-03468-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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9
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Kang TS. Basic principles for developing real-time PCR methods used in food analysis: A review. Trends Food Sci Technol 2019. [DOI: 10.1016/j.tifs.2019.07.037] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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10
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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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11
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Kaltenbrunner M, Hochegger R, Cichna-Markl M. Tetraplex real-time PCR assay for the simultaneous identification and quantification of roe deer, red deer, fallow deer and sika deer for deer meat authentication. Food Chem 2018; 269:486-494. [PMID: 30100464 DOI: 10.1016/j.foodchem.2018.07.023] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 06/23/2018] [Accepted: 07/02/2018] [Indexed: 01/24/2023]
Abstract
Analytical methods are needed for the identification and quantification of meat species to detect food adulteration. Since game meat is more expensive than meat from domesticated animal species, it is a potential target for adulteration. We present a tetraplex real-time PCR assay that allows the simultaneous determination of the content of roe deer, red deer, fallow deer and sika deer. The tetraplex assay showed only moderate cross-reactivity with closely related species. After optimization the tetraplex assay had a limit of detection of 0.1% (w/w) and a limit of quantification of 0.5% (w/w) for each of the four deer species. The tetraplex assay was found to be robust, slight modifications of the experimental setup did not lower its performance. Recoveries obtained by analyzing DNA mixtures and DNA isolates from model game sausages were similar to those obtained with the singleplex assays.
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Affiliation(s)
- Maria Kaltenbrunner
- Austrian Agency for Health and Food Safety, Institute for Food Safety Vienna, Department of Molecular Biology and Microbiology, Spargelfeldstraße 191, 1220 Vienna, Austria; Department of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Währinger Straße 38, 1090 Vienna, Austria.
| | - Rupert Hochegger
- Austrian Agency for Health and Food Safety, Institute for Food Safety Vienna, Department of Molecular Biology and Microbiology, Spargelfeldstraße 191, 1220 Vienna, Austria.
| | - Margit Cichna-Markl
- Department of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Währinger Straße 38, 1090 Vienna, Austria.
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12
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Lubis H, Salihah NT, Norizan NA, Hossain MM, Ahmed MU. Fast and Sensitive Real-time PCR-based Detection of Porcine DNA in Food Samples by Using EvaGreen Dye. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2018. [DOI: 10.3136/fstr.24.803] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Hamadah Lubis
- Biosensors and Biotechnology Laboratory, Integrated Science Building, Faculty of Science, Universiti Brunei Darussalam
| | - Nur Thaqifah Salihah
- Biosensors and Biotechnology Laboratory, Integrated Science Building, Faculty of Science, Universiti Brunei Darussalam
| | - Nur Aqirah Norizan
- Biosensors and Biotechnology Laboratory, Integrated Science Building, Faculty of Science, Universiti Brunei Darussalam
| | | | - Minhaz Uddin Ahmed
- Biosensors and Biotechnology Laboratory, Integrated Science Building, Faculty of Science, Universiti Brunei Darussalam
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13
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Game meat authentication through rare earth elements fingerprinting. Anal Chim Acta 2017; 991:46-57. [PMID: 29031298 DOI: 10.1016/j.aca.2017.09.013] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 08/25/2017] [Accepted: 09/03/2017] [Indexed: 12/12/2022]
Abstract
Accurate labelling of meat (e.g. wild versus farmed, geographical and genetic origin, organic versus conventional, processing treatment) is important to inform the consumers about the products they buy. Meat and meat products declared as game have higher commercial value making them target to fraudulent labelling practices and replacement with non-game meat. We have developed and validated a new method for authentication of wild rabbit meat using elemental metabolomics approach. Elemental analysis was performed using rapid ultra-trace multi-element measurement by inductively coupled plasma mass spectrometry (ICP-MS). Elemental signatures showed excellent ability to discriminate the wild rabbit from non-wild rabbit meat. Our results demonstrate the usefulness of metabolic markers -rare earth signatures, as well as other trace element signatures for game meat authentication.
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14
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Chen R, Wang J, Yuan Y, Deng Y, Lai X, Du F, Dong J, Huang X, Cui X, Tang Z. Weigh Biomaterials by Quantifying Species-specific DNA with Real-time PCR. Sci Rep 2017; 7:4774. [PMID: 28684790 PMCID: PMC5500521 DOI: 10.1038/s41598-017-05083-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 05/23/2017] [Indexed: 11/09/2022] Open
Abstract
What's on the label is not what's in the bottle, from food products to herbal medicinal products (HMPs), economically-motivated biomaterials adulteration is a long-term problem affecting the food and drug industry. Accurate identification of the biomaterial ingredients in processed commodities is highly desirable. In this field, DNA-based techniques have proved to be powerful tools to overcome qualitative challenges. However, is it possible to quantify the weight of biological materials with PCR? Therefore, a basic scientific question needs to be answered: what's the relationship between DNA content and the mass of biological materials? Is DNA content directly proportional to the mass of biological materials as most of the researchers previously thought? In this study, we firstly found that there exists a linear relation between DNA contents and the weight of biomaterials indeed when the analytical practices are fully controlled. In this case, the mass of targeted biomaterials in the highly processed commercial products can also be calculated by quantifying the species-specific DNA through classic real-time PCR with a good reproducibility.
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Affiliation(s)
- Rong Chen
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, P. R. China
- Ethnomedicine College, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Jiayu Wang
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, P. R. China
| | - Yi Yuan
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, P. R. China
| | - Yun Deng
- Pharmacy College, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, P. R. China
| | - Xianrong Lai
- Ethnomedicine College, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, P. R. China
| | - Feng Du
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, P. R. China
| | - Juan Dong
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, P. R. China
| | - Xin Huang
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, P. R. China
| | - Xin Cui
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, P. R. China
| | - Zhuo Tang
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, P. R. China.
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.
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15
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Ren J, Deng T, Huang W, Chen Y, Ge Y. A digital PCR method for identifying and quantifying adulteration of meat species in raw and processed food. PLoS One 2017; 12:e0173567. [PMID: 28319152 PMCID: PMC5358868 DOI: 10.1371/journal.pone.0173567] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 02/23/2017] [Indexed: 11/18/2022] Open
Abstract
Meat adulteration is a worldwide concern. In this paper, a new droplet digital PCR (ddPCR) method was developed for the quantitative determination of the presence of chicken in sheep and goat meat products. Meanwhile, a constant (multiplication factor) was introduced to transform the ratio of copy numbers to the proportion of meats. The presented ddPCR method was also proved to be more accurate (showing bias of less than 9% in the range from 5% to 80%) than real-time PCR, which has been widely used in this determination. The method exhibited good repeatability and stability in different thermal treatments and at ultra-high pressure. The relative standard deviation (RSD) values of 5% chicken content was less than 5.4% for ultra-high pressure or heat treatment. Moreover, we confirmed that different parts of meat had no effect on quantification accuracy of the ddPCR method. In contrast to real-time PCR, we examined the performance of ddPCR as a more precise, sensitive and stable analytical strategy to overcome potential problems of discrepancies in amplification efficiency discrepancy and to obtain the copy numbers directly without standard curves. The method and strategy developed in this study can be applied to quantify the presence and to confirm the absence of adulterants not only to sheep but also to other kinds of meat and meat products.
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Affiliation(s)
- Junan Ren
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
- Agro-product Safety Research Center, Chinese Academy of Inspection and Quarantine, Beijing, China
| | - Tingting Deng
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
- Agro-product Safety Research Center, Chinese Academy of Inspection and Quarantine, Beijing, China
| | - Wensheng Huang
- Agro-product Safety Research Center, Chinese Academy of Inspection and Quarantine, Beijing, China
| | - Ying Chen
- Agro-product Safety Research Center, Chinese Academy of Inspection and Quarantine, Beijing, China
- * E-mail: (YG); (YC)
| | - Yiqiang Ge
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
- China Rural Technology Development Center, Beijing, China
- * E-mail: (YG); (YC)
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16
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Druml B, Kaltenbrunner M, Hochegger R, Cichna-Markl M. A novel reference real-time PCR assay for the relative quantification of (game) meat species in raw and heat-processed food. Food Control 2016. [DOI: 10.1016/j.foodcont.2016.05.055] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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17
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Asing, Ali E, Hamid SBA, Hossain M, Ahamad MNU, Hossain SMA, Naquiah N, Zaidul ISM. Duplex real-time PCR assay using SYBR Green to detect and quantify Malayan box turtle (Cuora amboinensis) materials in meatballs, burgers, frankfurters and traditional Chinese herbal jelly powder. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2016; 33:1643-1659. [DOI: 10.1080/19440049.2016.1236403] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Asing
- Nanotechnology and Catalysis Research Center (NANOCAT), University of Malaya, Kuala Lumpur, Malaysia
| | - Eaqub Ali
- Nanotechnology and Catalysis Research Center (NANOCAT), University of Malaya, Kuala Lumpur, Malaysia
- Centre for Research in Biotechnology for Agriculture (CEBAR), University of Malaya, Kuala Lumpur, Malaysia
| | - Sharifah Bee Abd Hamid
- Nanotechnology and Catalysis Research Center (NANOCAT), University of Malaya, Kuala Lumpur, Malaysia
| | - Motalib Hossain
- Nanotechnology and Catalysis Research Center (NANOCAT), University of Malaya, Kuala Lumpur, Malaysia
| | | | - S. M. Azad Hossain
- Nanotechnology and Catalysis Research Center (NANOCAT), University of Malaya, Kuala Lumpur, Malaysia
| | - Nina Naquiah
- Nanotechnology and Catalysis Research Center (NANOCAT), University of Malaya, Kuala Lumpur, Malaysia
| | - I. S. M. Zaidul
- Department of Pharmaceutical Technology, Faculty of Pharmacy, International Islamic University, Kuantan, Malaysia
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Rahmati S, Julkapli NM, Yehye WA, Basirun WJ. Identification of meat origin in food products–A review. Food Control 2016. [DOI: 10.1016/j.foodcont.2016.04.013] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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