1
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Li LF, Shi X, Qi SM, Zhang XT, Fung HY, Li QR, Han QB. Strategies, techniques and applications for food authentication based on carbohydrates: A review. Carbohydr Polym 2024; 344:122533. [PMID: 39218564 DOI: 10.1016/j.carbpol.2024.122533] [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: 05/30/2024] [Revised: 07/09/2024] [Accepted: 07/21/2024] [Indexed: 09/04/2024]
Abstract
The increasing complexity and ubiquity of food processing and the emergence of fraudulent practices have made effective and reliable methods to authenticate food products of utmost importance. Carbohydrates, with various nutritional functions, are abundant in foods and can serve as potential markers for food authentication. However, the complex and diverse structures and properties of carbohydrates, especially polysaccharides, pose challenges. Nonetheless, significant progress has been made in this area. This paper provides an overview of the utilization of carbohydrates in food authentication since 2000, focusing on strategies involving carbohydrate-based markers, carbohydrate profiles, and carbohydrate-protein interaction-based assays. The analytical techniques, applications, challenges and limitations of these strategies are reviewed and discussed. The findings demonstrate that these strategies offer origin verification, quality assessment, adulteration detection, process control, and food species identification. Notably, oligosaccharide analysis has proven effective in food authentication and remains a promising marker, especially for analyzing intricate matrices. The advances in chromatography separation and mass spectrometry identification of isomers and trace amounts of these compounds have facilitated the discovery of such markers. In conclusion, carbohydrate analysis can play a crucial role in food authentication. Future research and development will make the authentication of carbohydrate-rich foods ever more accurate and efficient.
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Affiliation(s)
- Li-Feng Li
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Xi Shi
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Si-Min Qi
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Xue-Ting Zhang
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Hau-Yee Fung
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Qian-Ran Li
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Quan-Bin Han
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China.
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2
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Feng D, Wang D, Zhong Q, Wu Z, Yue H, Liu Y, Zhang L. A rapid method for the determination of stable hydrogen isotope ratios of acetic acid in vinegar. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2024; 38:e9718. [PMID: 38419561 DOI: 10.1002/rcm.9718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 01/17/2024] [Accepted: 01/21/2024] [Indexed: 03/02/2024]
Abstract
RATIONALE Vinegar is an everyday condiment made from fermented grains or fruits. It contains acetic acid which is the main organic material produced by fermentation. Vinegar suffers from the authenticity problem of exogenous adulteration due to the indistinguishability of low-cost chemical sources of synthetic acetic acid from acetic acid produced by fermentation. It is necessary to establish a simple and rapid measurement technique. METHODS Determination was according to the total acid content of vinegar diluted with acetone to a certain concentration. Online separation and determination of acetic acid δD in vinegar were carried out using gas chromatography-pyrolysis-isotope ratio mass spectrometry. RESULTS An HP-Plot/U column was selected for online separation of acetic acid and water with molecular sieve characteristics. At the same time, combined with the instrument blowback function to remove water. Dilute solvent acetone was treated with a molecular sieve to remove trace water. The reproducibility of this method is less than 3‰. The long-term stability is within a reasonable error range. The accuracy correlation coefficient is greater than 0.99. The δD values of acetic acid in vinegar (-264.5 ± 20.3‰) and from chemical sources (-30.5 ± 90.8‰) were obtained. CONCLUSIONS A rapid method was developed for identification of different sources of acetic acid. These different sources of acetic acid exhibited significant hydrogen isotope distribution characteristics. Additionally, it was observed that the carboxyl hydrogen of acetic acid exhibited facile exchange with water. In future investigations, we aim to mitigate this interference.
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Affiliation(s)
- Di Feng
- Beijing University of Technology, Beijing, China
- Technology Innovation Center of State Market Regulation on Consumer Goods Quality and Safety, Beijing, China
- Sinolight Technology Innovation Center Co. Ltd, Beijing, China
| | - Daobing Wang
- Technology Innovation Center of State Market Regulation on Consumer Goods Quality and Safety, Beijing, China
- Sinolight Technology Innovation Center Co. Ltd, Beijing, China
| | - Qiding Zhong
- Technology Innovation Center of State Market Regulation on Consumer Goods Quality and Safety, Beijing, China
- Sinolight Technology Innovation Center Co. Ltd, Beijing, China
- China National Research Institute of Food and Fermentation Industries, Beijing, China
| | - Zhuying Wu
- Technology Innovation Center of State Market Regulation on Consumer Goods Quality and Safety, Beijing, China
- Sinolight Technology Innovation Center Co. Ltd, Beijing, China
| | - Hongwei Yue
- Technology Innovation Center of State Market Regulation on Consumer Goods Quality and Safety, Beijing, China
- Sinolight Technology Innovation Center Co. Ltd, Beijing, China
| | - Yang Liu
- Technology Innovation Center of State Market Regulation on Consumer Goods Quality and Safety, Beijing, China
- Sinolight Technology Innovation Center Co. Ltd, Beijing, China
| | - Luoqi Zhang
- China National Research Institute of Food and Fermentation Industries, Beijing, China
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3
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Mantha M, Kubachka KM, Urban JR, Brueggemeyer JL, Kaine LA, Patton RA. Using Liquid Chromatography-Isotope Ratio Mass Spectrometry for Detection of Economically Motivated Adulteration of Maple Syrup. J AOAC Int 2024; 107:69-76. [PMID: 37788065 DOI: 10.1093/jaoacint/qsad115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 09/05/2023] [Accepted: 09/21/2023] [Indexed: 10/04/2023]
Abstract
BACKGROUND Maple syrup is a sought-after commodity, and used as a condiment and a sweetener. Also, it is an active target of economically motivated adulteration (EMA), similar to other foods such as lemon juice and honey. OBJECTIVE This study is aimed to detect low cost sugar adulteration in maple syrup via an internal standard method using malic acid through solid-phase extraction (SPE) and LC with isotope ratio mass spectrometric detection (LC-IRMS). METHODS In this work, an optimized SPE sample preparation procedure was used for the isolation of organic acids from maple syrup. Using LC-IRMS, malic acid was separated from other organic acids and the δ13C value of malic acid was determined. Eleven maple syrup samples, domestic or imported from Canada, were evaluated for 13C/12C ratios (δ13C values) using combustion module-cavity ring down spectrometry (CM-CRDS) and compared to the δ13C values obtained from well-established elemental analyzer-isotope ratio mass spectrometry (EA-IRMS) methods. The δ13C values of isolated malic acid analyzed by SPE-LC-IRMS were used as internal standards and compared to the δ13C values of bulk maple syrup; difference (δ13Csugars - δ13Cmalic acid) values greater than 3.6‰ are indicative of low-cost sugar adulteration. RESULTS Overall, the results obtained from SPE-LC-IRMS provided a faster, novel analysis approach for determining low-cost sugar adulteration in maple syrup for regulatory purposes. This method also provided lower detectable limits of adulteration versus current literature reports using bulk analysis and comparable detection limits to Tremblay and co-workers who utilized an internal standard method. CONCLUSION SPE-LC-IRMS is a robust method that can be used for detecting adulteration in maple syrup samples for regulatory purposes. HIGHLIGHTS SPE-LC-IRMS is a faster, novel analysis approach for determining C4 adulteration in maple syrup with lower detection limits.
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Affiliation(s)
- Madhavi Mantha
- U.S. Food and Drug Administration, Forensic Chemistry Center, Office of Regulatory Science, Office of Regulatory Affairs, 6751 Steger Dr, Cincinnati, OH 45237, USA
| | - Kevin M Kubachka
- U.S. Food and Drug Administration, Forensic Chemistry Center, Office of Regulatory Science, Office of Regulatory Affairs, 6751 Steger Dr, Cincinnati, OH 45237, USA
| | - John R Urban
- U.S. Food and Drug Administration, Forensic Chemistry Center, Office of Regulatory Science, Office of Regulatory Affairs, 6751 Steger Dr, Cincinnati, OH 45237, USA
| | - Jana L Brueggemeyer
- U.S. Food and Drug Administration, Forensic Chemistry Center, Office of Regulatory Science, Office of Regulatory Affairs, 6751 Steger Dr, Cincinnati, OH 45237, USA
| | - Lisa A Kaine
- U.S. Food and Drug Administration, Forensic Chemistry Center, Office of Regulatory Science, Office of Regulatory Affairs, 6751 Steger Dr, Cincinnati, OH 45237, USA
| | - Reagan A Patton
- U.S. Food and Drug Administration, Forensic Chemistry Center, Office of Regulatory Science, Office of Regulatory Affairs, 6751 Steger Dr, Cincinnati, OH 45237, USA
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4
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Yang D, Jia L, Zhou Y, Lu J, He Y, Jiao J, Huang J, Xia R, Li Y, Han L, Peng Z. Geographical origin traceability of mulberry leaves using stable hydrogen, oxygen, and carbon isotope ratios. ANAL SCI 2023; 39:2075-2083. [PMID: 37665546 DOI: 10.1007/s44211-023-00414-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 08/17/2023] [Indexed: 09/05/2023]
Abstract
Geographical discrimination of mulberry leaves is very important for their efficacy and quality as a traditional Chinese medicine. Stable hydrogen, oxygen, and carbon isotope ratios were measured in 292 mulberry leaves collected at 2 growth stages in 2 seasons from 8 regions of China. A stepwise linear discriminant analysis (LDA) approach were proposed to combine with stable isotope technology to tracing the origin of mulberry leaves. The results showed that leaves sampled in autumn were extremely depleted in 2H and 18O and slightly enriched in 13C compared with leaves sampled in summer, correlated with the effect of season, transpiration and photorespiration on stable isotopes. δ2H and δ18O of the leaves were enriched during the growth process. The overall discrimination accuracy of the autumn tender model was 81%, demonstrating that analysis of δ2H, δ18O, and δ13C is a promising technique for tracing the geographical origin of mulberry leaves, although season, growth stage and number of samples affect the accuracy of discrimination.
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Affiliation(s)
- Dan Yang
- College of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China
- Institute of Textile Conservation, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Liling Jia
- Key Scientific Research Base of Textile Conservation, State Administration for Cultural Heritage, China National Silk Museum, Hangzhou, 310002, China
| | - Yang Zhou
- Key Scientific Research Base of Textile Conservation, State Administration for Cultural Heritage, China National Silk Museum, Hangzhou, 310002, China
| | - Jingzhong Lu
- College of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China
- Institute of Textile Conservation, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Yujie He
- College of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China
- Institute of Textile Conservation, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Jinpeng Jiao
- College of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China
- Institute of Textile Conservation, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Ju Huang
- College of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China
- Institute of Textile Conservation, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Runtao Xia
- College of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China
- Institute of Textile Conservation, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Yuxing Li
- College of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China
- Institute of Textile Conservation, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Lihua Han
- College of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China
- Institute of Textile Conservation, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Zhiqin Peng
- College of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China.
- Institute of Textile Conservation, Zhejiang Sci-Tech University, Hangzhou, 310018, China.
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5
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Liu H, Nie J, Liu Y, Wadood SA, Rogers KM, Yuan Y, Gan RY. A review of recent compound-specific isotope analysis studies applied to food authentication. Food Chem 2023; 415:135791. [PMID: 36868070 DOI: 10.1016/j.foodchem.2023.135791] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 02/17/2023] [Accepted: 02/21/2023] [Indexed: 02/27/2023]
Abstract
Compound-specific stable isotope analysis (CSIA) of food products is a relatively new and novel technique used to authenticate food and detect adulteration. This paper provides a review of recent on-line and off-line CSIA applications of plant and animal origin foods, essential oils and plant extracts. Different food discrimination techniques, applications, scope, and recent studies are discussed. CSIA δ13C values are widely used to verify geographical origin, organic production, and adulteration. The δ15N values of individual amino acids and nitrate fertilizers have proven effective to authenticate organic foods, while δ2H and δ18O values are useful to link food products with local precipitation for geographical origin verification. Most CSIA techniques focus on fatty acids, amino acids, monosaccharides, disaccharides, organic acids, and volatile compounds enabling more selective and detailed origin and authentication information than bulk isotope analyses.. In conclusion, CSIA has a stronger analytical advantage for the authentication of food compared to bulk stable isotope analysis, especially for honey, beverages, essential oils, and processed foods.
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Affiliation(s)
- Hongyan Liu
- Research Center for Plants and Human Health, Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu National Agricultural Science & Technology Center, Chengdu 610213, China.
| | - Jing Nie
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Agro-Products Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Yi Liu
- Research Center for Plants and Human Health, Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu National Agricultural Science & Technology Center, Chengdu 610213, China
| | - Syed Abdul Wadood
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Agro-Products Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Karyne M Rogers
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Agro-Products Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; National Isotope Centre, GNS Science, Lower Hutt 5040, New Zealand
| | - Yuwei Yuan
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Agro-Products Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
| | - Ren-You Gan
- Singapore Institute of Food and Biotechnology Innovation (SIFBI), Agency for Science, Technology and Research (A*STAR), 31 Biopolis Way, Singapore 138669, Singapore.
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6
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Jahani R, van Ruth S, Yazdanpanah H, Faizi M, Shojaee AliAbadi MH, Mahboubi A, Kobarfard F. Isotopic signatures and patterns of volatile compounds for discrimination of genuine lemon, genuine lime and adulterated lime juices. Food Control 2022. [DOI: 10.1016/j.foodcont.2022.108837] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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7
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A comparative authentication study of fresh fruit and vegetable juices using whole juice and sugar-specific stable isotopes. Food Chem 2022; 373:131535. [PMID: 34865923 DOI: 10.1016/j.foodchem.2021.131535] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Revised: 10/24/2021] [Accepted: 11/02/2021] [Indexed: 12/29/2022]
Abstract
Not-from-concentrate (NFC) juice has better nutrition, flavor and higher price than reconstituted juice. Accordingly, NFC juice is prone to adulteration and is an ongoing industry problem that has not yet been resolved. Undeclared addition of water and sugar are the main forms of NFC juice adulteration. This paper investigates the carbon and oxygen stable isotope ratios (δ13C and δ18O values) of the bulk juice and different juice components from 21 fruit and vegetable juices, and qualitatively and quantitatively analyzes the addition of water and sugar in NFC juices. The results show that the use of fruit pulp can help to qualitatively and quantitatively indicate the presence of C4 plant sugars in NFC juice, and can reliably detect added C4 plant sugars above 7 %. Sugar-specific isotope analysis (SSIA) technology was used to determine the δ13C values of different sugars (sucrose, glucose and fructose) and carbon content to qualitatively infer C3 plant sugar addition. Pulp extracted from juice had a good linear relationship with the juice water δ18O values (R2 >0.90). The addition of water to NFC juice can also be determined by comparing δ18O values of extraneous water, pulp and filtered juice. Stable isotope technology confirmed NFC juice adulteration of in-market samples using the pulp as an internal reference and was found to be a useful tool to detect adulteration of in-market NFC juice.
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8
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Perini M, Bontempo L. Liquid Chromatography coupled to Isotope Ratio Mass Spectrometry (LC-IRMS): A review. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2021.116515] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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9
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Suto M, Kawashima H. Discrimination for sake brewing methods by compound specific isotope analysis and formation mechanism of organic acids in sake. Food Chem 2022; 381:132295. [PMID: 35121325 DOI: 10.1016/j.foodchem.2022.132295] [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: 10/03/2021] [Revised: 01/12/2022] [Accepted: 01/27/2022] [Indexed: 11/29/2022]
Abstract
Organic acids in sake affect its aroma and color and help control the activity of microorganisms. This study used liquid chromatography coupled with isotope ratio mass spectrometry and solid-phase extraction to determine the stable carbon isotope ratios (δ13C) for malic acid, lactic acid, and succinic acid in 49 sake samples. The mean δ13C of lactic acid was -25.6 ± 2.1‰ in kimoto samples and -20.2 ± 2.5‰ in sokujo sample. According to linear discriminant analysis using δ13C of lactic acid, 87.8% of kimoto and sokujo samples were correctly identified. The proportion of brewers' lactic acid in sake could be calculated from the δ13C value of lactic acid for the first time. The productions of malic acid and succinic acid may be conducted by some kinds of fermentation and the mechanism of the tricarboxylic acid cycle by using δ13C of malic acid and succinic acid.
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Affiliation(s)
- Momoka Suto
- Department of Management Science and Engineering, Faculty of Systems Science and Technology, Akita Prefectural University, 84-4, Ebinokuchi, Tsuchiya, Yuri-Honjyo, Akita 015-0055, Japan
| | - Hiroto Kawashima
- Department of Management Science and Engineering, Faculty of Systems Science and Technology, Akita Prefectural University, 84-4, Ebinokuchi, Tsuchiya, Yuri-Honjyo, Akita 015-0055, Japan.
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10
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Shojaee AliAbadi MH, Karami-Osboo R, Kobarfard F, Jahani R, Nabi M, Yazdanpanah H, Mahboubi A, Nasiri A, Faizi M. Detection of lime juice adulteration by simultaneous determination of main organic acids using liquid chromatography-tandem mass spectrometry. J Food Compost Anal 2022. [DOI: 10.1016/j.jfca.2021.104223] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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11
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LEI JL, HU CY, DENG H, GUO YR, MENG YH. Authentication of fresh apple juice by stable isotope ratios of δD, δ18O and δ13C. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.71620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Jia Lei LEI
- Shaanxi Normal University, Chang’an, China; Shaanxi University of Technology, China
| | | | - Hong DENG
- Shaanxi Normal University, Chang’an, China
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12
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Mohammadian A, Barzegar M, Mani‐Varnosfaderani A. Detection of fraud in lime juice using pattern recognition techniques and FT-IR spectroscopy. Food Sci Nutr 2021; 9:3026-3038. [PMID: 34136168 PMCID: PMC8194754 DOI: 10.1002/fsn3.2260] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 03/12/2021] [Accepted: 03/14/2021] [Indexed: 11/27/2022] Open
Abstract
The lime juice is one of the products that has always fallen victim to fraud by manufacturers for reducing the cost of products. The aim of this research was to determine fraud in distributed lime juice products from different factories in Iran. In this study, 101 samples were collected from markets and also prepared manually and finally derived into 5 classes as follows: two natural classes (Citrus limetta, Citrus aurantifolia), including 17 samples, and three reconstructed classes, including 84 samples (made from Spanish concentrate, Chinese concentrate, and concentrate containing adulteration compounds). The lime juice samples were freeze-dried and analyzed using FT-IR spectroscopy. At first, principal component analysis (PCA) was applied for clustering, but the samples were not thoroughly clustered with respect to their original groups in score plots. To enhance the classification rates, different chemometric algorithms including variable importance in projection (VIP), partial least square-discriminant analysis (PLS-DA), and counter propagation artificial neural networks (CPANN) were used. The best discriminatory wavenumbers related to each class were selected using the VIP-PLS-DA algorithm. Then, the CPANN algorithm was used as a nonlinear mapping tool for classification of the samples based on their original groups. The lime juice samples were correctly designated to their original groups in CPANN maps and the overall accuracy of the model reached up to 0.96 and 0.87 for the training and validation procedures. This level of accuracy indicated the FT-IR spectroscopy coupled with VIP-PLS-DA and CPANN methods can be used successfully for detection of authenticity of lime juice samples.
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Affiliation(s)
| | - Mohsen Barzegar
- Department of Food Science and TechnologyTarbiat Modares UniversityTehranIran
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13
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Xu L, Xu Z, Liao X. A review of fruit juice authenticity assessments: Targeted and untargeted analyses. Crit Rev Food Sci Nutr 2021; 62:6081-6102. [PMID: 33683157 DOI: 10.1080/10408398.2021.1895713] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Fruit juices are becoming more and more popular in the whole world. However, the increasing fruit juice fraud cases are undermining the healthy development of fruit juice industry. Fruit juice authenticity represents an important food quality and safety parameter. Many techniques have been applied in fruit juices authenticity assessment. The purpose of this review is to provide a research overview of the targeted and untargeted analyses of fruit authentication, and a method selection guide for fruit juice authenticity assessment. Targeted markers, such as stable isotopes, phenolics, carbohydrates, organic acids, volatile components, DNAs, amino acids and proteins, as well as carotenoids, will be discussed. And untargeted techniques, including liquid/gas chromatography-mass spectrometer, nuclear magnetic resonance, infrared spectroscopy, inductively-coupled plasma-mass spectrometry/optical emission spectrometer, fluorescence spectra, electronic sensors and others, will be reviewed. The emerging untargeted for novel targeted marker analysis will be also summarized.
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Affiliation(s)
- Lei Xu
- Institute of Quality Standard & Testing Technology for Agro-Products, Key Laboratory of Agro-food Safety and Quality, Ministry of Agriculture and Rural Affairs, Chinese Academy of Agricultural Sciences, Beijing, China.,College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China.,Beijing Key Laboratory for Food Nonthermal Processing, Key Lab of Fruit and Vegetable Processing, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Zhenzhen Xu
- Institute of Quality Standard & Testing Technology for Agro-Products, Key Laboratory of Agro-food Safety and Quality, Ministry of Agriculture and Rural Affairs, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xiaojun Liao
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China.,Beijing Key Laboratory for Food Nonthermal Processing, Key Lab of Fruit and Vegetable Processing, Ministry of Agriculture and Rural Affairs, Beijing, China
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14
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Ghanati K, Hassan J, Takavar A, Ali H, Sadighara P. Rapid test for traceability assessment in lemon juice by high-performance liquid chromatography fluorescence. INTERNATIONAL ARCHIVES OF HEALTH SCIENCES 2021. [DOI: 10.4103/iahs.iahs_31_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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15
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Fang CJ, You HC, Huang ZL, Hsu CL, Tsai CF, Lin YT, Kao YM, Tseng SH, Wang DY, Su NW. Simultaneous Analysis of the Stable Carbon Isotope Ratios of Acetoin and Acetic Acid by GC-C-IRMS for Adulteration Detection in Brewed Rice Vinegar Products. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:14252-14260. [PMID: 33215927 DOI: 10.1021/acs.jafc.0c05674] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this study, we developed a method to simultaneously measure the stable carbon isotope ratio for acetic acid (δ 13Cacetic acid) and acetoin (δ13Cacetoin) in rice vinegar by gas chromatography-combustion-isotope ratio mass spectrometry. The method showed good precision and accuracy. With this method, data from 16 brewed rice vinegars and 10 acetic acid samples were used to evaluate the feasibility of adulteration detection. On the basis that all δ13Cacetoin values of brewed rice vinegars are nearly constant, a characteristic pattern of the stable carbon isotope in rice vinegar was built with the 95% confidence intervals for δ13Cacetic acid (-26.97 to -25.38‰), δ13Cacetoin (-28.14 to -27.09‰), and Δδ13C (0.61 to 2.27‰). An adulteration detection curve of Δδ13C was proposed based on the results of vinegar and acetic acid samples and confirmed by vinegar spiked with different amounts of acetic acid. This method could be useful in estimating the blending ratio of adulterated rice vinegar products. Products containing more than 10% of synthetic acetic acid could be possibly identified.
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Affiliation(s)
- Chun-Jen Fang
- Department of Agricultural Chemistry, National Taiwan University, No. 1, Sec. 4, Roosevelt Road., Da'an District, Taipei City 106216, Taiwan
- Taiwan Food and Drug Administration, 161-2 Kunyang Street, Nangang District, Taipei City 115209, Taiwan
| | - Hsin-Cheng You
- Taiwan Food and Drug Administration, 161-2 Kunyang Street, Nangang District, Taipei City 115209, Taiwan
| | - Zih-Ling Huang
- Taiwan Food and Drug Administration, 161-2 Kunyang Street, Nangang District, Taipei City 115209, Taiwan
| | - Che-Lun Hsu
- Taiwan Food and Drug Administration, 161-2 Kunyang Street, Nangang District, Taipei City 115209, Taiwan
| | - Chia-Fen Tsai
- Taiwan Food and Drug Administration, 161-2 Kunyang Street, Nangang District, Taipei City 115209, Taiwan
| | - Ya-Tze Lin
- Taiwan Food and Drug Administration, 161-2 Kunyang Street, Nangang District, Taipei City 115209, Taiwan
| | - Ya-Min Kao
- Taiwan Food and Drug Administration, 161-2 Kunyang Street, Nangang District, Taipei City 115209, Taiwan
| | - Su-Hsiang Tseng
- Taiwan Food and Drug Administration, 161-2 Kunyang Street, Nangang District, Taipei City 115209, Taiwan
| | - Der-Yuan Wang
- Taiwan Food and Drug Administration, 161-2 Kunyang Street, Nangang District, Taipei City 115209, Taiwan
| | - Nan-Wei Su
- Department of Agricultural Chemistry, National Taiwan University, No. 1, Sec. 4, Roosevelt Road., Da'an District, Taipei City 106216, Taiwan
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Carbon isotope ratio of organic acids in sake and wine by solid-phase extraction combined with LC/IRMS. Anal Bioanal Chem 2020; 413:355-363. [PMID: 33057737 DOI: 10.1007/s00216-020-03003-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 10/06/2020] [Accepted: 10/09/2020] [Indexed: 10/23/2022]
Abstract
We developed an analytical procedure for determining the δ13C values of organic acids in sake and wine using solid-phase extraction combined with liquid chromatography/isotope ratio mass spectrometry (LC/IRMS). First, the solid-phase extraction (SPE) procedure was performed and various tests were conducted to extract organic acids from alcoholic beverages using the simulated sake sample. Under the optimal SPE procedure, high recovery rates (96-118%) and good accuracies (≤ 0.7‰) were thus achieved for the simulated sake and wine samples. Next, we determined the δ13C of organic acid (tartaric acid, malic acid, lactic acid, succinic acid) in 9 sake and 11 wine samples. Finally, the δ13C values of lactic acid in nine sake samples suggested that lactic acid had been added during the brewing process. The high correlation between the δ13C values of tartaric acid and malic acid in 11 wine samples was consistent with their common source, grapes. This analytical method may help to identify when organic acids have been added to sake and wine and to elucidate the process of organic acid production therein. Graphical abstract.
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17
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Francois G, Fabrice V, Didier M. Traceability of fruits and vegetables. PHYTOCHEMISTRY 2020; 173:112291. [PMID: 32106013 DOI: 10.1016/j.phytochem.2020.112291] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 01/27/2020] [Accepted: 02/01/2020] [Indexed: 05/22/2023]
Abstract
Food safety and traceability are nowadays a constant concern for consumers, and indeed for all actors in the food chain, including those involved in the fruit and vegetable sector. For the EU, the principles and legal requirements of traceability are set out in Regulation 178/2002. Currently however the regulation does not describe any analytical traceability tools. Furthermore, traceability systems for fruits and vegetables face increasing competition due to market globalization. The current challenge for actors in this sector is therefore to be sufficiently competitive in terms of price, traceability, quality and safety to avoid scandal and fraud. For all these reasons, new, flexible, cheap and efficient traceability tools, as isotopic analysis, DNA fingerprinting and metabolomic profiling coupled with chemometrics are needed.
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Affiliation(s)
- Guyon Francois
- Service Commun des Laboratoires, Laboratoire de Bordeaux/Pessac, 3 Avenue du Dr. A. Schweitzer, 33608, Pessac Cedex, France.
| | - Vaillant Fabrice
- Qualisud, Univ Montpellier, CIRAD, Montpellier SupAgro, Univ d'Avignon, Univ de La Réunion, Montpellier, France; AGROSAVIA (Colombian Corporation for Agricultural Research), C.I. La Selva, Km 7 via las Palmas, Rionegro, Antioquia, Colombia
| | - Montet Didier
- Qualisud, Univ Montpellier, CIRAD, Montpellier SupAgro, Univ d'Avignon, Univ de La Réunion, Montpellier, France
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18
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Compound Specific Carbon Isotope Analysis in Sake by LC/IRMS and Brewers' Alcohol Proportion. Sci Rep 2019; 9:17635. [PMID: 31776418 PMCID: PMC6881313 DOI: 10.1038/s41598-019-54162-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 11/07/2019] [Indexed: 01/09/2023] Open
Abstract
Sake is a traditional Japanese alcohol. Nowadays, the consumption for Sake is increasing in worldwide and its popularity is growing. However, there are act of fraudulence by additional brewers’ alcohol and sugar. Therefore, a method is needed to find illegal fraud on label. In this work, we analyzed the δ13C values of the ethanol (δ13Ceth) and glucose (δ13Cglu) in Sake by liquid chromatography combined with isotope ratio mass spectrometry for the first time. Further, we developed the criteria using δ13Ceth and δ13Cglu to check brewers’ alcohol and sugar. In addition, there are some sake categories (Ginjyo and Futsu-shu) allowed to additional brewers’ alcohol up to legally determined percentage. The experimental additions of brewers’ alcohol from a C4 plant were conducted to Junmai, as sake by C3 plants. There was a strong correlation (R = 0.98, P < 0.05) between the percentage of added brewers’ alcohol and the δ13C values. We developed the method using the relationship for calculating percentage of brewers’ alcohol for the first time and estimated the percentage for commercial sake. Further, the price of sake was found to be inversely related to the percentage of brewers’ alcohol in the sake.
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19
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Zhao S, Zhao Y, Rogers KM, Chen G, Chen A, Yang S. Application of multi-element (C, N, H, O) stable isotope ratio analysis for the traceability of milk samples from China. Food Chem 2019; 310:125826. [PMID: 31767489 DOI: 10.1016/j.foodchem.2019.125826] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 10/28/2019] [Accepted: 10/28/2019] [Indexed: 01/25/2023]
Abstract
Cow milk samples from various provinces in China were collected, and the effects of lactation stage, sampling time, and geographic origin on the samples were studied by elemental analysis-isotope ratio mass spectrometry (EA-IRMS). Traceability accuracy was determined using δ13C, δ15N, δ2H and δ18O values to specifically assign geographic origin. Stable isotope ratios of C, N, H and O were not significantly different among three lactation stages; however the δ13C, δ15N, and δ18O values of milk were influenced by sampling time. Furthermore, there were highly significant regional differences in the mean δ13C and δ15N values of milk. In summary, the lactation stage had no effect on the traceability of milk, whereas sampling time and geographic origin did affect milk traceability. Different geographic locations with a separation distance greater than 0.7 km can be distinguished using multi-element (C, N, H, O) stable isotope ratio analysis.
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Affiliation(s)
- Shanshan Zhao
- Institute of Quality Standard & Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 100081, China; Key Laboratory of Agro-product Quality and Safety, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
| | - Yan Zhao
- Institute of Quality Standard & Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 100081, China; Key Laboratory of Agro-product Quality and Safety, Ministry of Agriculture and Rural Affairs, Beijing 100081, China.
| | - Karyne M Rogers
- National Isotope Centre, GNS Science, 30 Gracefield Road, Lower Hutt 5040, New Zealand
| | - Gang Chen
- Institute of Quality Standard & Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 100081, China; Key Laboratory of Agro-product Quality and Safety, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
| | - Ailiang Chen
- Institute of Quality Standard & Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 100081, China; Key Laboratory of Agro-product Quality and Safety, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
| | - Shuming Yang
- Institute of Quality Standard & Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 100081, China; Key Laboratory of Agro-product Quality and Safety, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
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20
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Xue Y, Qing LS, Yong L, Xu XS, Hu B, Tang MQ, Xie J. Determination of Flavonoid Glycosides by UPLC-MS to Authenticate Commercial Lemonade. Molecules 2019; 24:molecules24163016. [PMID: 31434256 PMCID: PMC6719059 DOI: 10.3390/molecules24163016] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 08/16/2019] [Accepted: 08/16/2019] [Indexed: 12/19/2022] Open
Abstract
So far, there is no report on the quality evaluation of lemonade available in the market. In this study, a sample preparation method was developed for the determination of flavonoid glycosides by ultra-performance liquid chromatography–mass spectrometry (UPLC-MS) based on vortex-assisted dispersive liquid-liquid microextraction. First, potential flavonoids in lemonade were scanned and identified by ultra-performance liquid chromatography–time of flight mass spectrometry (UPLC-TOF/MS). Five flavonoid glycosides were identified as eriocitrin, narirutin, hesperidin, rutin, and diosmin according to the molecular formula provided by TOF/MS and subsequent confirmation of the authentic standard. Then, an ultra-performance liquid chromatography–triple quadrupole mass spectrometry (UPLC-QqQ/MS) method was developed to determine these five flavonoid glycosides in lemonade. The results showed that the content of rutin in some lemonade was unreasonably high. We suspected that many illegal manufacturers achieved the goal of low-cost counterfeiting lemonade by adding rutin. This suggested that it was necessary for relevant departments of the state to make stricter regulations on the quality standards of lemonade beverages.
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Affiliation(s)
- Ying Xue
- School of Pharmacy, Chengdu Medical College, Chengdu 610500, China
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
- Sichuan Provincial Center for Disease Control and Prevention, Chengdu 610041, China
| | - Lin-Sen Qing
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
| | - Li Yong
- Sichuan Provincial Center for Disease Control and Prevention, Chengdu 610041, China
| | - Xian-Shun Xu
- Sichuan Provincial Center for Disease Control and Prevention, Chengdu 610041, China
| | - Bin Hu
- Sichuan Provincial Center for Disease Control and Prevention, Chengdu 610041, China
| | - Ming-Qing Tang
- School of Pharmacy, Chengdu Medical College, Chengdu 610500, China
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
| | - Jing Xie
- School of Pharmacy, Chengdu Medical College, Chengdu 610500, China.
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21
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Heart-cutting two-dimensional liquid chromatography combined with isotope ratio mass spectrometry for the determination of stable carbon isotope ratios of gluconic acid in honey. J Chromatogr A 2019; 1608:460421. [PMID: 31405574 DOI: 10.1016/j.chroma.2019.460421] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2019] [Revised: 07/02/2019] [Accepted: 08/03/2019] [Indexed: 11/21/2022]
Abstract
Liquid chromatography/isotope ratio mass spectrometry (LC/IRMS) is used to analyze various types of samples, including foodstuffs, to determine their authenticity and trace their origin on the basis of their stable carbon isotope ratios (δ13C). However, multicomponent samples are difficult to analyze. For example, determining the δ13C values of the organic acids in honey is complicated by the presence of large amounts of carbohydrates. Herein, we present a heart-cutting two-dimensional LC/IRMS method for analysis of honey samples. In this method, the organic acids in the samples were first separated from the carbohydrates by a size-exclusion column, and then the organic acids were separated from each other by a reverse-phase column connected to the first column via a switching valve. By means of this method, the δ13C values for three organic acids in high-carbohydrate-content simulated honey samples could be determined with high accuracy and precision (≤0.3‰ and ≤0.1‰, respectively). In addition, the gluconic acid δ13C values for 25 honey samples were determined with high precision and found to range from -31.7 to -28.5‰ (mean: -30.0 ± 0.7‰). These values shed some light on the mechanism of gluconic acid production. Taken together, our results suggest that this two-dimensional LC method has the potential to be more effective than one-dimensional LC for use in isotopic research.
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22
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Akamatsu F, Tsuchida Y, Oe T, Hisatsune Y, Igi Y, Hashiguchi T, Fujii T. Carbon stable isotopic compositions of citric acid and malic acid in Japanese apricot liqueur decrease as the fruit ripens. Food Chem 2019; 277:70-74. [PMID: 30502206 DOI: 10.1016/j.foodchem.2018.10.081] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 10/14/2018] [Accepted: 10/16/2018] [Indexed: 11/30/2022]
Abstract
The carbon stable isotopic composition (δ13C) is often analyzed to quantify the addition of acidulants to Japanese apricot liqueur, but little is known about the variation in the δ13C values of the main organic acids arising from differences in the ripeness of Japanese apricots. We show that in Japanese apricot liqueur prepared using fruits at different stages of ripeness, the δ13C values of citric acid and malic acid ranged from -25.1‰ to -23.7‰ and from -22.3‰ to -19.7‰, respectively, and the δ13C values decreased as the fruit ripened. The average δ13C value of citric acid from liqueurs was 0.7‰ higher than that from fresh fruits, whereas the δ13C values of malic acid showed no isotope discrimination. The variation in δ13C values of the main organic acids in Japanese apricot liqueurs will help detect acidulant addition and control authenticity.
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Affiliation(s)
- Fumikazu Akamatsu
- National Research Institute of Brewing, 3-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-0046, Japan.
| | - Yasuhisa Tsuchida
- Japanese Apricot Laboratory, Wakayama Fruit Tree Experiment Station, Minabe, Wakayama 645-0021, Japan
| | - Takaaki Oe
- Japanese Apricot Laboratory, Wakayama Fruit Tree Experiment Station, Minabe, Wakayama 645-0021, Japan
| | - Yuri Hisatsune
- National Research Institute of Brewing, 3-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-0046, Japan
| | - Yukari Igi
- National Research Institute of Brewing, 3-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-0046, Japan
| | - Tomokazu Hashiguchi
- National Research Institute of Brewing, 3-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-0046, Japan
| | - Tsutomu Fujii
- National Research Institute of Brewing, 3-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-0046, Japan
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23
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Dasenaki ME, Thomaidis NS. Quality and Authenticity Control of Fruit Juices-A Review. Molecules 2019; 24:E1014. [PMID: 30871258 PMCID: PMC6470824 DOI: 10.3390/molecules24061014] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 03/08/2019] [Accepted: 03/09/2019] [Indexed: 12/22/2022] Open
Abstract
Food fraud, being the act of intentional adulteration of food for financial advantage, has vexed the consumers and the food industry throughout history. According to the European Committee on the Environment, Public Health and Food Safety, fruit juices are included in the top 10 food products that are most at risk of food fraud. Therefore, reliable, efficient, sensitive and cost-effective analytical methodologies need to be developed continuously to guarantee fruit juice quality and safety. This review covers the latest advances in the past ten years concerning the targeted and non-targeted methodologies that have been developed to assure fruit juice authenticity and to preclude adulteration. Emphasis is placed on the use of hyphenated techniques and on the constantly-growing role of MS-based metabolomics in fruit juice quality control area.
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Affiliation(s)
- Marilena E Dasenaki
- Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zographou, 15771 Athens, Greece.
| | - Nikolaos S Thomaidis
- Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zographou, 15771 Athens, Greece.
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24
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Veldhuizen MG, Siddique A, Rosenthal S, Marks LE. Interactions of Lemon, Sucrose and Citric Acid in Enhancing Citrus, Sweet and Sour Flavors. Chem Senses 2019; 43:17-26. [PMID: 29293949 DOI: 10.1093/chemse/bjx063] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Flavorants such as lemon extract that activate olfactory receptors may also evoke or enhance flavor qualities such as sour and sweet that are typically considered gustatory. Similarly, flavorants such as sucrose and citric acid that activate gustatory receptors may enhance flavors such as citrus that are typically considered olfactory. Here, we ask how lemon extract, sucrose, and citric acid, presented separately and together, affect sweet, sour, and citrus flavors. We accomplished this by testing, in the same 12 subjects, lemon extract and sucrose (Experiment 1), lemon extract and citric acid (Experiment 2), and lemon extract, sucrose, and citric acid (Experiment 3). Results showed that both lemon extract and citric acid increased the ratings of citrus and sour intensity. Lemon extract did not affect sweet, but citric acid did, mainly in Experiment 3. Sucrose systematically increased only sweet intensity and modulated the effect of lemon extract on sour. The most robust multiquality effect was the enhancement of sour by lemon extract. These outcomes suggest, first, a role played by experience with the statistical associations of gustatory and olfactory flavorants and, second, that lemon flavor is complex, having citrus and sour qualities that may not be fully separable in perception.
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Affiliation(s)
- Maria G Veldhuizen
- John B Pierce Laboratory, 290 Congress Avenue, USA.,Department of Psychiatry, Yale University School of Medicine, 333 Cedar Street, USA
| | | | - Sage Rosenthal
- John B Pierce Laboratory, 290 Congress Avenue, USA.,John L. Miller Great Neck North High School, USA
| | - Lawrence E Marks
- John B Pierce Laboratory, 290 Congress Avenue, USA.,Department of Environmental Health Sciences, Yale School of Public Health, 60 College Street, USA.,Department of Psychology, Yale University, 2 Hillhouse Avenue, USA
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25
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Wadood SA, Boli G, Yimin W. Geographical traceability of wheat and its products using multielement light stable isotopes coupled with chemometrics. JOURNAL OF MASS SPECTROMETRY : JMS 2019; 54:178-188. [PMID: 30440085 DOI: 10.1002/jms.4312] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 11/02/2018] [Accepted: 11/06/2018] [Indexed: 06/09/2023]
Abstract
The present study was aimed to investigate the variation of stable isotopic ratios of carbon, nitrogen, hydrogen, and oxygen in wheat kernel along with different processed fractions from three geographical origins across 5 years using isotope ratio mass spectrometry (IRMS). Multiway ANOVA revealed significant differences among region, harvest year, processing, and their interactions for all isotopes. The region contributed the major variability in the δ13 C ‰, δ2 H ‰, δ15 N ‰, and δ18 O‰ values of wheat. Variation of δ13 C ‰, δ15 N ‰, and δ18 O ‰ between wheat whole kernel and its products (break, reduction, noodles, and cooked noodles) were ˂0.7‰, and no significant difference was observed, suggesting the reliability of these isotope fingerprints in geographical traceability of wheat-processed fractions and foods. A significant influence of wheat processing was observed for δ2 H values. By applying linear discriminant analysis (LDA) to the whole dataset, the generated model correctly classified over 91% of the samples according to the geographical origin. The application of these parameters will assist in the development of an analytical control procedure that can be utilized to control the mislabeling regarding geographical origin of wheat kernel and its products.
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Affiliation(s)
- Syed Abdul Wadood
- Institute of Food Science and Technology, CAAS/ key laboratory of Argo-Products Processing, Ministry of Agriculture and Rural Affair, Beijing, China
| | - Guo Boli
- Institute of Food Science and Technology, CAAS/ key laboratory of Argo-Products Processing, Ministry of Agriculture and Rural Affair, Beijing, China
| | - Wei Yimin
- Institute of Food Science and Technology, CAAS/ key laboratory of Argo-Products Processing, Ministry of Agriculture and Rural Affair, Beijing, China
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26
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Ding B, Zeng G, Wang Z, Xie J, Wang L, Chen W. Authenticity determination of tea drinks in the Chinese market by liquid chromatography coupled to isotope ratio mass spectrometry. Microchem J 2019. [DOI: 10.1016/j.microc.2018.09.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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27
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Bichon E, Sitthisack P, Sérée-Vattier L, Prévost S, Schiphorst AM, Pouponneau K, Monteau F, Le Bizec B. Determination of l -cysteine origin on the basis of its δ 15 N values. Food Chem 2018; 260:283-288. [DOI: 10.1016/j.foodchem.2018.03.139] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 03/23/2018] [Accepted: 03/29/2018] [Indexed: 11/24/2022]
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28
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Kawashima H, Suto M, Suto N. Determination of carbon isotope ratios for honey samples by means of a liquid chromatography/isotope ratio mass spectrometry system coupled with a post-column pump. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2018; 32:1271-1279. [PMID: 29781254 DOI: 10.1002/rcm.8170] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 05/10/2018] [Accepted: 05/10/2018] [Indexed: 06/08/2023]
Abstract
RATIONALE Liquid chromatography/isotope ratio mass spectrometry (LC/IRMS) has been used to authenticate and trace products such as honey, wine, and lemon juice, and compounds such as caffeine and pesticides. However, LC/IRMS has several disadvantages, including the high cost of the CO2 membrane and blocking by solidified sodium persulfate. Here, we developed an improved system for determining carbon isotope ratios using LC/IRMS. METHODS The main improvement was the use of a post-column pump. Using the improved system, we determined δ13 C values for glucose with high accuracy and precision (0.1‰ and 0.1‰, respectively; n = 3). The glucose, fructose, disaccharide, trisaccharide, and organic acid constituents of honey samples were analyzed using LC/IRMS. RESULTS The δ13 C values for glucose, fructose, disaccharides, trisaccharides, and organic acids ranged from -27.0 to -24.2‰, -26.8 to -24.0‰, -28.8 to -24.0‰, -27.8 to -22.8‰, and - 30.6 to -27.4‰, respectively. The analysis time was a third to a half of that required for analysis by previously reported methods. CONCLUSIONS The column flow rate could be arbitrarily adjusted with the post-column pump. We applied the improved method to 26 commercial honey samples. Our results can be expected to be useful for other researchers who use LC/IRMS.
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Affiliation(s)
- Hiroto Kawashima
- Akita Prefectural University, Department of Management Science and Engineering, Faculty of Systems Science and Technology, 84-4, Ebinokuchi, Tuchiya, Yuri-Honjyo, Akita, 015-0055, Japan
| | - Momoka Suto
- Akita Prefectural University, Department of Management Science and Engineering, Faculty of Systems Science and Technology, 84-4, Ebinokuchi, Tuchiya, Yuri-Honjyo, Akita, 015-0055, Japan
| | - Nana Suto
- Akita Prefectural University, Department of Management Science and Engineering, Faculty of Systems Science and Technology, 84-4, Ebinokuchi, Tuchiya, Yuri-Honjyo, Akita, 015-0055, Japan
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29
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Khodadadi A, Nemati M, Tamizi E, Nazemiyeh H. Facile and Accelerated Method for Detection of Adulteration in Commercially Available Lime Juice Products in Iranian Marke. PHARMACEUTICAL SCIENCES 2018. [DOI: 10.15171/ps.2018.22] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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30
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Sugar-specific carbon isotope ratio analysis of coconut waters for authentication purposes. Journal of Food Science and Technology 2018; 55:2994-3000. [PMID: 30065408 DOI: 10.1007/s13197-018-3217-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 05/03/2018] [Accepted: 05/09/2018] [Indexed: 01/10/2023]
Abstract
The application of sugar-specific carbon isotope analysis by combining high performance liquid chromatography and isotope ratio mass spectrometry is described, for investigating the detection of added C4-plant sugars in coconut waters. Authenticity of coconut waters gains more importance since the product is considered a juice by the European Fruit Juice Association (AIJN), while it holds an increasing consumer preference as healthy, low-carb beverage. The detection potential was compared with the conventional total sugar carbon isotope analysis and it is demonstrated that the isotopic profile of individual sugars substantially improves the limit of detection of added C4-plant sugars in coconut water. The study includes 30 authentic coconut waters (extracted from coconuts in the lab), which provide the authentic carbon isotope range of pulp, total sugars, sucrose, glucose and fructose, and 24 commercial coconut waters (bottled) purchased from grocery stores. The market scan revealed that 38% of the tested samples contain undeclared added C4-sugars.
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31
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Fan L, Chen L, Ding R, Wang L, Zhang B. Geographical Discrimination of Honeysuckle (Lonicera japonica Thunb.) from China by Characterization of the Stable Isotope Ratio and Multielemental Analysis. ANAL LETT 2018. [DOI: 10.1080/00032719.2018.1446973] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Lixia Fan
- Shandong Academy of Agricultural Sciences, Institute of Quality Standard and Testing Technology for Agro-Products, Jinan, Shandong, China
- Shandong Provincial Key Laboratory of Test Technology on Food Quality and Safety, Jinan, Shandong, China
| | - Lu Chen
- Shandong Academy of Agricultural Sciences, Institute of Quality Standard and Testing Technology for Agro-Products, Jinan, Shandong, China
- Shandong Provincial Key Laboratory of Test Technology on Food Quality and Safety, Jinan, Shandong, China
| | - Ruiyan Ding
- Shandong Academy of Agricultural Sciences, Institute of Quality Standard and Testing Technology for Agro-Products, Jinan, Shandong, China
- Shandong Provincial Key Laboratory of Test Technology on Food Quality and Safety, Jinan, Shandong, China
| | - Lei Wang
- Shandong Academy of Agricultural Sciences, Institute of Quality Standard and Testing Technology for Agro-Products, Jinan, Shandong, China
- Shandong Provincial Key Laboratory of Test Technology on Food Quality and Safety, Jinan, Shandong, China
| | - Bingchun Zhang
- Shandong Academy of Agricultural Sciences, Institute of Quality Standard and Testing Technology for Agro-Products, Jinan, Shandong, China
- Shandong Provincial Key Laboratory of Test Technology on Food Quality and Safety, Jinan, Shandong, China
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32
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Akamatsu F, Oe T, Hashiguchi T, Hisatsune Y, Kawao T, Fujii T. Application of carbon and hydrogen stable isotope analyses to detect exogenous citric acid in Japanese apricot liqueur. Food Chem 2017; 228:297-300. [PMID: 28317727 DOI: 10.1016/j.foodchem.2017.01.136] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 01/26/2017] [Accepted: 01/27/2017] [Indexed: 12/01/2022]
Abstract
Japanese apricot liqueur manufacturers are required to control the quality and authenticity of their liqueur products. Citric acid made from corn is the main acidulant used in commercial liqueurs. In this study, we conducted spiking experiments and carbon and hydrogen stable isotope analyses to detect exogenous citric acid used as an acidulant in Japanese apricot liqueurs. Our results showed that the δ13C values detected exogenous citric acid originating from C4 plants but not from C3 plants. The δ2H values of citric acid decreased as the amount of citric acid added increased, whether the citric acid originated from C3 or C4 plants. Commercial liqueurs with declared added acidulant provided higher δ13C values and lower δ2H values than did authentic liqueurs and commercial liqueurs with no declared added acidulant. Carbon and hydrogen stable isotope analyses are suitable as routine methods for detecting exogenous citric acid in Japanese apricot liqueur.
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Affiliation(s)
- Fumikazu Akamatsu
- National Research Institute of Brewing, 3-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-0046, Japan.
| | - Takaaki Oe
- Agriculture, Forestry and Fisheries Depertment, Wakayama Prefecture, 1-1 Komatsubara-dori, Wakayama, Wakayama 640-8585, Japan
| | - Tomokazu Hashiguchi
- National Research Institute of Brewing, 3-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-0046, Japan
| | - Yuri Hisatsune
- National Research Institute of Brewing, 3-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-0046, Japan
| | - Takafumi Kawao
- Agriculture, Forestry and Fisheries Depertment, Wakayama Prefecture, 1-1 Komatsubara-dori, Wakayama, Wakayama 640-8585, Japan
| | - Tsutomu Fujii
- National Research Institute of Brewing, 3-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-0046, Japan
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33
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Akamatsu F, Hashiguchi T, Hisatsune Y, Oe T, Kawao T, Fujii T. Method for the isolation of citric acid and malic acid in Japanese apricot liqueur for carbon stable isotope analysis. Food Chem 2017; 217:112-116. [DOI: 10.1016/j.foodchem.2016.08.077] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 04/29/2016] [Accepted: 08/23/2016] [Indexed: 10/21/2022]
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34
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Dong H, Xiao K, Luo D. Stability of carbon and nitrogen isotopic compositions of the protein extracted from milk and their potential as “fingerprints” of geographical origin. RSC Adv 2017. [DOI: 10.1039/c7ra00722a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The present work aimed to determine whether isotopic compositions can be used as “fingerprints” in identifying the geographical origin of milk.
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Affiliation(s)
- Hao Dong
- School of Food Science and Technology
- South China University of Technology
- Guangzhou 510640
- China
| | - Kaijun Xiao
- School of Food Science and Technology
- South China University of Technology
- Guangzhou 510640
- China
| | - Donghui Luo
- Guangzhou Healthy Food Technology Co., Ltd
- Guangzhou
- China
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35
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Traceability of ‘Limone di Siracusa PGI’ by a multidisciplinary analytical and chemometric approach. Food Chem 2016; 211:734-40. [DOI: 10.1016/j.foodchem.2016.05.119] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Revised: 05/03/2016] [Accepted: 05/17/2016] [Indexed: 11/17/2022]
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36
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Bononi M, Quaglia G, Tateo F. Preliminary LC-IRMS Characterization of Italian Pure Lemon Juices and Evaluation of Commercial Juices Distributed in the Italian Market. FOOD ANAL METHOD 2016. [DOI: 10.1007/s12161-016-0479-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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37
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Wang Z, Jablonski JE. Targeted and non-targeted detection of lemon juice adulteration by LC-MS and chemometrics. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2016; 33:560-73. [PMID: 26807674 DOI: 10.1080/19440049.2016.1138547] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Economically motivated adulteration (EMA) of lemon juice was detected by LC-MS and principal component analysis (PCA). Twenty-two batches of freshly squeezed lemon juice were adulterated by adding an aqueous solution containing 5% citric acid and 6% sucrose to pure lemon juice to obtain 30%, 60% and 100% lemon juice samples. Their total titratable acidities, °Brix and pH values were measured, and then all the lemon juice samples were subject to LC-MS analysis. Concentrations of hesperidin and eriocitrin, major phenolic components of lemon juice, were quantified. The PCA score plots for LC-MS datasets were used to preview the classification of pure and adulterated lemon juice samples. Results showed a large inherent variability in the chemical properties among 22 batches of 100% lemon juice samples. Measurement or quantitation of one or several chemical properties (targeted detection) was not effective in detecting lemon juice adulteration. However, by using the LC-MS datasets, including both chromatographic and mass spectrometric information, 100% lemon juice samples were successfully differentiated from adulterated samples containing 30% lemon juice in the PCA score plot. LC-MS coupled with chemometric analysis can be a complement to existing methods for detecting juice adulteration.
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Affiliation(s)
- Zhengfang Wang
- a Center for Food Safety and Applied Nutrition, Division of Food Processing Science and Technology , US Food and Drug Administration (USFDA) , Bedford Park , IL , USA
| | - Joseph E Jablonski
- a Center for Food Safety and Applied Nutrition, Division of Food Processing Science and Technology , US Food and Drug Administration (USFDA) , Bedford Park , IL , USA
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38
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Li C, Dong H, Luo D, Xian Y, Fu X. Recent Developments in Application of Stable Isotope and Multi-element Analysis on Geographical Origin Traceability of Cereal Grains. FOOD ANAL METHOD 2015. [DOI: 10.1007/s12161-015-0328-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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39
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Guyon F, van Leeuwen C, Gaillard L, Grand M, Akoka S, Remaud GS, Sabathié N, Salagoïty MH. Comparative study of ¹³C composition in ethanol and bulk dry wine using isotope ratio monitoring by mass spectrometry and by nuclear magnetic resonance as an indicator of vine water status. Anal Bioanal Chem 2015; 407:9053-60. [PMID: 26438472 DOI: 10.1007/s00216-015-9072-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 09/17/2015] [Accepted: 09/22/2015] [Indexed: 11/24/2022]
Abstract
The potential of wine (13)C isotope composition (δ(13)C) is presented to assess vine water status during grape ripening. Measurements of δ(13)C have been performed on a set of 32 authentic wines and their ethanol recovered after distillation. The data, obtained by isotope ratio monitoring by mass spectrometry coupled to an elemental analyser (irm-EA/MS), show a high correlation between δ(13)C of the bulk wine and its ethanol, indicating that the distillation step is not necessary when the wine has not been submitted to any oenological treatment. Therefore, the ethanol/wine δ(13)C correlation can be used as an indicator of possible enrichment of the grape must or the wine with exogenous organic compounds. Wine ethanol δ(13)C is correlated to predawn leaf water potential (R(2) = 0.69), indicating that this parameter can be used as an indicator of vine water status. Position-specific (13)C analysis (PSIA) of ethanol extracted from wine, performed by isotope ratio monitoring by nuclear magnetic resonance (irm-(13)C NMR), confirmed the non-homogenous repartition of (13)C on ethanol skeleton. It is the δ(13)C of the methylene group of ethanol, compared to the methyl moiety, which is the most correlated to predawn leaf water potential, indicating that a phase of photorespiration of the vine during water stress period is most probably occurring due to stomata closure. However, position-specific (13)C analysis by irm-(13)C NMR does not offer a greater precision in the assessment of vine water status compared to direct measurement of δ(13)C on bulk wine by irm-EA/MS.
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Affiliation(s)
- Francois Guyon
- Service Commun des Laboratoires, 3 Avenue du Dr. Albert Schweitzer, 33608, Pessac cedex, France.
| | - Cornelis van Leeuwen
- Bordeaux Sciences Agro, University of Bordeaux, ISVV, Ecophysiology and Functional Genomics of Grapevines, UMR 1287, 33140, Villenave d'Ornon, France
| | - Laetitia Gaillard
- Service Commun des Laboratoires, 3 Avenue du Dr. Albert Schweitzer, 33608, Pessac cedex, France
| | - Mathilde Grand
- EBSI Team, CEISAM, UMR CNR6230, 2 rue de la Houssinière, BP 92208, 44322, Nantes cedex 3, France
| | - Serge Akoka
- EBSI Team, CEISAM, UMR CNR6230, 2 rue de la Houssinière, BP 92208, 44322, Nantes cedex 3, France
| | - Gérald S Remaud
- EBSI Team, CEISAM, UMR CNR6230, 2 rue de la Houssinière, BP 92208, 44322, Nantes cedex 3, France
| | - Nathalie Sabathié
- Service Commun des Laboratoires, 3 Avenue du Dr. Albert Schweitzer, 33608, Pessac cedex, France
| | - Marie-Hélène Salagoïty
- Service Commun des Laboratoires, 3 Avenue du Dr. Albert Schweitzer, 33608, Pessac cedex, France
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40
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Multi-Element (C, N, H, O) Stable Isotope Ratio Analysis for Determining the Geographical Origin of Pure Milk from Different Regions. FOOD ANAL METHOD 2015. [DOI: 10.1007/s12161-015-0204-9] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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41
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Luo D, Dong H, Luo H, Xian Y, Wan J, Guo X, Wu Y. The application of stable isotope ratio analysis to determine the geographical origin of wheat. Food Chem 2015; 174:197-201. [DOI: 10.1016/j.foodchem.2014.11.006] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 10/25/2014] [Accepted: 11/01/2014] [Indexed: 11/16/2022]
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42
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43
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Gilevska T, Gehre M, Richnow HH. Performance of the wet oxidation unit of the HPLC isotope ratio mass spectrometry system for halogenated compounds. Anal Chem 2014; 86:7252-7. [PMID: 24975492 DOI: 10.1021/ac501174d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The performance of liquid chromatography-isotope ratio mass spectrometry (LC-IRMS) for polar halogenated compounds was evaluated. Oxidation capacity of the system was tested with halogenated acetic acids and halogenated aromatic compounds. Acetic acid (AA) was selected as a reference compound for complete oxidation and compared on the molar basis to the oxidation of other analytes. The isotope values were proofed with calibrated δ(13)C values obtained with an elemental analyzer (EA). Correct isotope values were obtained for mono- and dichlorinated, fluorinated, and tribrominated acetic acids and also for aniline, phenol, benzene, bromobenzene, chlorobenzene, 1,2-dichlorobenzene, 2,4,6-trichlorophenol, pentafluorophenol, and nitrobenzene. Incomplete oxidation of trichloroacetic acid (TCA) and trifluoroacetic acid (TFA) resulted in lower recovery compared to AA (37% and 24%, respectively) and in isotopic shift compared to values obtained with EA (TCA Δδ(13)C(EA/LC-IRMS) = 8.8‰, TFA Δδ(13)C(EA/LC-IRMS) = 6.0‰). Improvement of oxidation by longer reaction time in the reactor and increase in the concentration of sulfate radicals did not lead to complete combustion of TCA and TFA needed for δ(13)C analysis. To the best of our knowledge, this is the first time such highly chlorinated compounds were studied with the LC-IRMS system. This work provides information for method development of LC-IRMS methods for halogenated contaminants that are known as potential threats to public health and the environment.
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Affiliation(s)
- Tetyana Gilevska
- Helmholtz-Centre for Environmental Research - UFZ , Department for Isotope Biogeochemistry, Permoserstrasse 15, Leipzig 04318, Germany
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44
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Guyon F, Gaillard L, Brault A, Gaultier N, Salagoïty MH, Médina B. Potential of ion chromatography coupled to isotope ratio mass spectrometry via a liquid interface for beverages authentication. J Chromatogr A 2013; 1322:62-8. [PMID: 24267317 DOI: 10.1016/j.chroma.2013.10.088] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Revised: 10/28/2013] [Accepted: 10/29/2013] [Indexed: 11/25/2022]
Abstract
New tools for the determination of characteristic parameters for food authentication are requested to prevent food adulteration from which health concerns, unfair competition could follow. A new coupling in the area of compound-specific carbon 13 isotope ratio (δ(13)C) analysis was developed to simultaneously quantify δ(13)C values of sugars and organic acids. The coupling of ion chromatography (IC) together with isotope ratio mass spectrometry (IRMS) can be achieved using a liquid interface allowing a chemical oxidation (co) of organic matter. Synthetic solutions containing 1 polyol (glycerol), 3 carbohydrates (sucrose, glucose and fructose) and 12 organic acids (gluconic, lactic, malic, tartaric, oxalic, fumaric, citric and isocitric) were used to optimize chromatographic conditions (concentration gradient and 3 types of column) and the studied isotopic range (-32.28 to -10.65‰) corresponds to the values found in food products. Optimum chromatographic conditions are found using an IonPac AS15, an elution flow rate of 0.3mLmin(-1) and a linear concentration gradient from 2 to 76mM (rate 21mMmin(-1)). Comparison between δ(13)C value individually obtained for each compound with the coupling IRMS and elemental analyzer, EA-IRMS, and the ones measured on the mixture of compounds by IC-co-IRMS does not reveal any isotope fractionation. Thus, under these experimental conditions, IC-co-IRMS results are accurate and reproducible. This new coupling was tested on two food matrices, an orange juice and a sweet wine. Some optimization is necessary as the concentration range between sugars and organic acids is too large: an increase in the filament intensity of the IRMS is necessary to simultaneously detect the two compound families. These first attempts confirm the good results obtained on synthetic solutions and the strong potential of the coupling IC-co-IRMS in food authentication area.
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Affiliation(s)
- Francois Guyon
- Service Commun des Laboratoires, 3 Avenue du Dr A. Schweitzer, 33608 Pessac, France.
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