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Hançerlioğulları BZ, Yılmaz R. Screening of P-35S, P-FMV, and T-NOS genetic elements in microwave-treated genetically modified cereal flours. Mol Biol Rep 2023; 50:4813-4822. [PMID: 37031325 DOI: 10.1007/s11033-023-08408-2] [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: 02/07/2023] [Accepted: 03/24/2023] [Indexed: 04/10/2023]
Abstract
BACKGROUND Reliable and efficient methods for detecting genetically modified organisms (GMOs) in unprocessed and processed food will be essential for establishing an effective system for traceability all along the supply chain. It is important to understand the detection of GMOs following microwave treatment, which is a common processing method used in various food products such as flours. Therefore, this study aimed to detect the presence of Cauliflower mosaic virus (CaMV) 35S promoter (P-35S), Figwort mosaic virus (FMV) promoter (P-FMV), and T-NOS (nopaline synthase terminator) genetic elements in DNA samples from untreated and microwave-treated genetically modified (GM) cereal flour samples using the qualitative polymerase chain reaction (PCR) based screening method.Please confirm if the author names are presented accurately and in the correct sequence (given name, middle name/initial, family name). Author 1 Given name: [Begüm Zeynep] Last name [Hançerlioğulları]. Also, kindly confirm the details in the metadata are correct. The author names were presented accurately and in the correct sequence (given name, middle name/initial, family name). Author 1 Given name: [Begüm Zeynep] Last name [Hançerlioğulları]. Author 2 Given name: [Remziye] Last name [Yılmaz]. The details in the metadata are correct. METHODS AND RESULTS DNA was extracted from all samples, and the efficiency of the qualitative PCR screening technique was tested by the verification studies. We performed an inhibition study with plant-specific actin (ACT) gene to the effectiveness of confirming the DNA extraction method. Then, we made the confirming of the qualitative PCR system by method performance testing criteria. The high quality and quantity of the DNA extracts from untreated and microwave-treated flour samples indicated the applicability of qualitative PCR screening assays. The results showed that microwave radiation does not significantly impact the genetic element screening in flour materials. CONCLUSION Untreated and microwave-treated flour samples had amplifiable DNA for the simultaneous screening of three genetic elements. The qualitative screening tests conducted in this study produced dependable outcomes, thus, can be successfully used for monitoring in control laboratories.
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Affiliation(s)
- Begüm Zeynep Hançerlioğulları
- Department of Food Engineering, Graduate School of Science and Engineering, Hacettepe University, Beytepe Campus, 06800, Ankara, Turkey
- FoodOmics Laboratory, Department of Food Engineering, Hacettepe University, Beytepe Campus, 06800, Ankara, Turkey
| | - Remziye Yılmaz
- Department of Food Engineering, Graduate School of Science and Engineering, Hacettepe University, Beytepe Campus, 06800, Ankara, Turkey.
- FoodOmics Laboratory, Department of Food Engineering, Hacettepe University, Beytepe Campus, 06800, Ankara, Turkey.
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Wang J, Yang Q, Liu H, Chen Y, Jiang W, Wang Y, Zeng H. A nanomaterial-free and thionine labeling-based lateral flow immunoassay for rapid and visual detection of the transgenic CP4-EPSPS protein. Food Chem 2022; 378:132112. [PMID: 35033711 DOI: 10.1016/j.foodchem.2022.132112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 12/14/2021] [Accepted: 01/06/2022] [Indexed: 12/28/2022]
Abstract
Nanomaterial-based lateral flow immunoassays (LFIAs) have been widely used for the on-site detection of genetically modified components. However, the practical applications are often limited by the complex matrix, such as in red samples. In this study, a thionine (Thi) labeling-based LFIA was developed for the first time to detect CP4-EPSPS protein. The optimal labeling concentration of Thi was 0.5 mg/mL, and the antibody could be rapidly coupled to Thi in 10 min. The visual limit of detection (vLOD) levels for transgenic soybean, sugar beet, and cotton containing the CP4-EPSPS protein reached 0.05%, 0.1%, and 0.1%, respectively, and had no interference from other proteins. After storage at 4 °C for three months, the LFIA sensitivity remained unchanged and showed good stability. This method could be used to screen and detect a variety of transgenic crops containing the CP4-EPSPS protein, and the results were consistent with the current standard assay. This study pioneered the development of an immunochromatographic method using Thi as a marker and applied it to the detection of the CP4-EPSPS protein in herbicide-tolerant transgenic crops. This provides a new method for the rapid immunoassay of Thi as a dye and has good prospects for practical application.
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Affiliation(s)
- Jinbin Wang
- Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, Key Laboratory of Agricultural Genetics and Breeding, Shanghai 201106, China; Crops Ecological Environment Security Inspection and Supervision Center (Shanghai), Ministry of Agriculture and Rural Affairs, Shanghai 201106, China
| | - Qianwen Yang
- Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, Key Laboratory of Agricultural Genetics and Breeding, Shanghai 201106, China; School of Life Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China
| | - Hua Liu
- Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, Key Laboratory of Agricultural Genetics and Breeding, Shanghai 201106, China; Crops Ecological Environment Security Inspection and Supervision Center (Shanghai), Ministry of Agriculture and Rural Affairs, Shanghai 201106, China
| | - Yifan Chen
- Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, Key Laboratory of Agricultural Genetics and Breeding, Shanghai 201106, China; Crops Ecological Environment Security Inspection and Supervision Center (Shanghai), Ministry of Agriculture and Rural Affairs, Shanghai 201106, China
| | - Wei Jiang
- Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, Key Laboratory of Agricultural Genetics and Breeding, Shanghai 201106, China; Crops Ecological Environment Security Inspection and Supervision Center (Shanghai), Ministry of Agriculture and Rural Affairs, Shanghai 201106, China
| | - Yu Wang
- Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, Key Laboratory of Agricultural Genetics and Breeding, Shanghai 201106, China; School of Life Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China
| | - Haijuan Zeng
- Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, Key Laboratory of Agricultural Genetics and Breeding, Shanghai 201106, China; Crops Ecological Environment Security Inspection and Supervision Center (Shanghai), Ministry of Agriculture and Rural Affairs, Shanghai 201106, China.
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Wang C, Huang C, Zhu P, Du Z, Wei S, Fu W. Applicability of a General Analytical Approach for Detection of Genetically Modified Organisms: Collaborative Trial. J AOAC Int 2021; 105:476-482. [PMID: 34927696 DOI: 10.1093/jaoacint/qsab154] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 11/21/2021] [Accepted: 11/27/2021] [Indexed: 11/14/2022]
Abstract
BACKGROUND With the commercialization of genetically modified organisms (GMOs) in the market, laboratories have undergone a significantly increased workload. A universal analytical approach was designed to achieve cost-efficient and high-throughput GMOs screening with high specificity and accuracy. The approach provides accurate qualification of authorized and unauthorized GMOs. OBJECTIVE This paper describes the assessment of this analytical approach developed to detect majority of commercialized GMOs over the world. METHODS Seven elements and three events were detected by qPCR in a single laboratory to detect 59 commercialized GMOs. Certificated reference materials and food/feed samples from Chinese market were also evaluated for the specificity, conformity and robustness of this approach and were challenged in the inter-laboratory study. RESULTS The results showed that elements and events selected can best detect GMO presence with good specificity and sensitivity. The results showed a concordance between 97.5% and 99.56% and the variance between 0.65% and 12.88%, which is in line with the minimum requirement of analytical methods of GMO testing. CONCLUSION The approach validated here can be used to manipulate GMO presence in food and feed and showed the capacity to manipulate GMOs trace in the trade and domestic agriculture grocery in China. HIGHLIGHTS A universal analytical approach used to track GMO presence was evaluated for its specificity, sensitivity and robustness.
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Affiliation(s)
- Chenguang Wang
- Chinese Academy of Inspection and Quarantine, Beijing, 100176 China
| | - Chunmeng Huang
- Chinese Academy of Inspection and Quarantine, Beijing, 100176 China.,College of Plant Protection, China Agricultural University, Beijing, 100083 China
| | - Pengyu Zhu
- Chinese Academy of Inspection and Quarantine, Beijing, 100176 China
| | - Zhixin Du
- Technical Center of Nanning Customs District, Nanning, Guangxi, 530021 China
| | - Shuang Wei
- Inspection and Quarantine Technology Centre of China Customs, Guangzhou, Guangdong, 510623 China
| | - Wei Fu
- Chinese Academy of Inspection and Quarantine, Beijing, 100176 China.,College of Plant Protection, China Agricultural University, Beijing, 100083 China
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Kim WJ, Yang S, Choi G, Park I, Noh P, Lee AY, Kim HS, Moon BC. Establishment of conventional PCR and real-time PCR assays for accurate, rapid and quantitative authentication of four mistletoe species. PHYTOCHEMISTRY 2020; 176:112400. [PMID: 32408189 DOI: 10.1016/j.phytochem.2020.112400] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 04/03/2020] [Accepted: 04/27/2020] [Indexed: 06/11/2023]
Abstract
Adulterants in processed food and herbal medicines reduce their safety, quality control, or pharmacological efficacy. Four mistletoe species, including Viscum coloratum, inhabit Korea. Leaves and branches of V. coloratum, defined as edible or medicinal mistletoe species in Korean, are used to prepare Korean herbal medicines as well as leached tea. However, other mistletoe species including Taxillus sutchuenensis var. duclouxii, Korthalsella japonica, and Loranthus tanakae are frequently distributed as authentic V. coloratum in Korean markets because of similarities in the branches morphology and Korean names of these species with V. coloratum. Although herbal medicines and food products prepared from the other mistletoe species are inauthentic, they are sold at high prices because of the rarity of these species. Thus, it is important to distinguish between authentic and inauthentic adulterant mistletoe species. In this study, we developed species-specific primer, based on matK sequences, suitable for both conventional PCR and real time PCR (qPCR) assay. These assays allowed rapid discrimination among all four mistletoe species. Moreover, qPCR assay enabled the detection of trace amounts of adulterant mistletoe species in V. coloratum samples. Furthermore, we used these assays to monitor commercial mistletoe products distributed in Korean markets. Our data suggest that these methods would serve as a reliable genetic tool to prevent adulteration and standardize the quality of commercial V. coloratum products.
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Affiliation(s)
- Wook Jin Kim
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, 111 Geonjae-ro, Naju, Jeollanam-do, 58245, South Korea
| | - Sungyu Yang
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, 111 Geonjae-ro, Naju, Jeollanam-do, 58245, South Korea
| | - Goya Choi
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, 111 Geonjae-ro, Naju, Jeollanam-do, 58245, South Korea
| | - Inkyu Park
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, 111 Geonjae-ro, Naju, Jeollanam-do, 58245, South Korea
| | - Pureum Noh
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, 111 Geonjae-ro, Naju, Jeollanam-do, 58245, South Korea
| | - A Yeong Lee
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, 111 Geonjae-ro, Naju, Jeollanam-do, 58245, South Korea
| | - Hyo Seon Kim
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, 111 Geonjae-ro, Naju, Jeollanam-do, 58245, South Korea
| | - Byeong Cheol Moon
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, 111 Geonjae-ro, Naju, Jeollanam-do, 58245, South Korea.
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Zhang FL, Yang XF, Wang D, Lei SR, Guo LA, Liu WJ, Song J. A simple and effective method to discern the true commercial Chinese cordyceps from counterfeits. Sci Rep 2020; 10:2974. [PMID: 32076084 PMCID: PMC7031310 DOI: 10.1038/s41598-020-59900-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 02/05/2020] [Indexed: 11/10/2022] Open
Abstract
The Chinese cordyceps, a complex of the fungus Ophiocordyceps sinensis and its species-specific host insects, is also called "DongChongXiaCao" in Chinese. Habitat degradation in recent decades and excessive harvesting by humans has intensified its scarcity and increased the prices of natural populations. Some counterfeits are traded as natural Chinese cordyceps for profit, causing confusion in the marketplace. To promote the safe use of Chinese cordyceps and related products, a duplex PCR method for specifically identifying raw Chinese cordyceps and its primary products was successfully established. Chinese cordyceps could be precisely identified by detecting an internal transcribed spacer amplicon from O. sinensis and a cytochrome oxidase c subunit 1 amplicon from the host species, at a limit of detection as low as 32 pg. Eleven commercial samples were purchased and successfully tested to further verify that the developed duplex PCR method could be reliably used to identify Chinese cordyceps. It provides a new simple way to discern true commercial Chinese cordyceps from counterfeits in the marketplace. This is an important step toward achieving an authentication method for this Chinese medicine. The methodology and the developmental strategy can be used to authenticate other traditional Chinese medicinal materials.
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Affiliation(s)
- Fu-Li Zhang
- Analysis and Determination Center, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, China
- Institute of Quality Standard and Testing Technology Research, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, China
| | - Xiao-Feng Yang
- Analysis and Determination Center, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, China
- Institute of Quality Standard and Testing Technology Research, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, China
| | - Dong Wang
- Analysis and Determination Center, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, China
- Institute of Quality Standard and Testing Technology Research, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, China
| | - Shao-Rong Lei
- Analysis and Determination Center, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, China
- Institute of Quality Standard and Testing Technology Research, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, China
| | - Ling-An Guo
- Analysis and Determination Center, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, China
- Institute of Quality Standard and Testing Technology Research, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, China
| | - Wen-Juan Liu
- Analysis and Determination Center, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, China
- Institute of Quality Standard and Testing Technology Research, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, China
| | - Jun Song
- Analysis and Determination Center, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, China.
- Institute of Quality Standard and Testing Technology Research, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, China.
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