U.S. flag

An official website of the United States government

PubAg

Main content area

You searched for: Subject "adulterated products" Remove constraint Subject: "adulterated products" Journal Journal of agricultural and food chemistry Remove constraint Journal: Journal of agricultural and food chemistry
Start Over

Search

266  Search Results

« Previous | 1 - 20 of 266 |
Number of results to display per page

Search Results

1. Quality Assessment of Bilberry Fruits (Vaccinium myrtillus) and Bilberry-Containing Dietary Supplements

Author:
Gaspar, Dan Plecenik; Lechtenberg, Matthias; Hensel, Andreas
Source:
Journal of agricultural and food chemistry 2021 v.69 no.7 pp. 2213-2225
ISSN:
1520-5118
Subject:
adulterated products,   etc   ; Vaccinium myrtillus; anthocyanins; bilberries; diarrhea; food chemistry; fraud; high performance liquid chromatography; product quality;     Show all 9 Subjects
Abstract:
... Bilberries (Vaccinium myrtillus) are used to treat non-specific diarrhea and for symptoms related to varicose veins. Because they are quite expensive fruits, quality problems and compositional fraud might occur for dietary supplements. This study investigated fresh/dried bilberries and dietary supplements by high-performance liquid chromatography (HPLC) fingerprinting against a quantified bilberry ...
DOI:
10.1021/acs.jafc.0c07784

2. Paper-Based Simplified Visual Detection of Cry2Ab Insecticide from Transgenic Cottonseed Samples Using Integrated Quantum Dots–IgY Antibodies

Author:
Kanagasubbulakshmi, S.; Kadirvelu, K.
Source:
Journal of agricultural and food chemistry 2021 v.69 no.14 pp. 4074-4080
ISSN:
1520-5118
Subject:
adulterated products,   etc   ; affinity chromatography; antibodies; chickens; cotton; cottonseed; crystal proteins; detection limit; fluorescence; food chemistry; immunization; insecticides; paper;     Show all 13 Subjects
Abstract:
... In the present study, an easy to use field-deployable methodology was developed for onsite detection of pesticidal crystal protein Cry2Ab from transgenic cotton crops to reduce seed adulteration. Anti Cry2Ab IgG and IgY antibodies were developed against recombinant Cry2Ab protein in New Zealand white rabbits and in white leg horn chickens, respectively. Carboxyl-functionalized CdTe quantum dots (Q ...
DOI:
10.1021/acs.jafc.0c07180

3. Fatty Acid Stable Carbon Isotope Ratios Combined with Oxidation Kinetics for Characterization and Authentication of Walnut Oils

Author:
Zhang, Limin; Wu, Shimin; Jin, Xinyu
Source:
Journal of agricultural and food chemistry 2021 v.69 no.23 pp. 6701-6709
ISSN:
1520-5118
Subject:
adulterated products,   etc   ; chemometrics; crystallization; food chemistry; gas chromatography; kinetics; mass spectrometry; oleic acid; oxidation; prices; principal component analysis; stable isotopes; temperature; vegetable oil; walnut oil; walnuts; China;     Show all 17 Subjects
Abstract:
... Walnut oil is vulnerable to oxidation due to its high content of polyunsaturated fatty acids and adulteration due to its high price. This study investigated 12 typical walnut oils from six main walnut-producing areas in China, using differential scanning calorimetry (DSC), Rancimat test, gas chromatography (GC), elemental analyzer–isotope ratio mass spectrometry (EA–IRMS) and GC–IRMS combined with ...
DOI:
10.1021/acs.jafc.1c01843

4. Characteristic Components and Authenticity Evaluation of Rape, Acacia, and Linden Honey

Author:
Qiao, Jiangtao; Chen, Lihong; Kong, Lingjie; Dong, Jie; Zhou, Zhuoqiang; Zhang, Hongcheng
Source:
Journal of agricultural and food chemistry 2020 v.68 no.36 pp. 9776-9788
ISSN:
1520-5118
Subject:
adulterated products,   etc   ; Acacia; beekeepers; food chemistry; fraud; honey; phaseic acid; prices; viability;     Show all 9 Subjects
Abstract:
... Honey fraud has an extensive global magnitude and impacts both honey price and beekeeper viability. This study aimed at investigating the characteristic phytochemicals of rape, acacia, and linden honey to verify honey authenticity. We discovered methyl syringate, phaseic acid, and lindenin (4-(2-hydroxypropan-2-yl) cyclohexa-1,3-diene-1-carboxylic acid) as particular or unique phytochemicals of ra ...
DOI:
10.1021/acs.jafc.0c05070

5. Suitability of DNA Sequencing Tools for Identifying Edible Seaweeds Sold in the United States

Author:
Handy, Sara M.; Ott, Brittany M.; Hunter, Elizabeth Sage; Zhang, Shu; Erickson, David L.; Wolle, Mesay Mulugeta; Conklin, Sean D.; Lane, Christopher E.
Source:
Journal of agricultural and food chemistry 2020 v.68 no.52 pp. 15516-15525
ISSN:
1520-5118
Subject:
adulterated products,   etc   ; ; DNA; DNA barcoding; Food and Drug Administration; food chemistry; heavy metals; human health; macroalgae; nuclear genome; species identification;     Show all 11 Subjects
Abstract:
... Seaweeds have been consumed by billions of people around the world and are increasingly popular in United States (US) diets. Some seaweed species have been associated with adverse health effects—such as heavy metal toxicity—and higher priced seaweeds may be more prone to adulteration. Knowing which species of seaweeds are being marketed in the US is important for protecting human health and preven ...
DOI:
10.1021/acs.jafc.0c03734

6. Detection of Peanut Adulteration in Food Samples by Nuclear Magnetic Resonance Spectroscopy

Author:
Schmitt, Caroline; Bastek, Tim; Stelzer, Alina; Schneider, Tobias; Fischer, Markus; Hackl, Thomas
Source:
Journal of agricultural and food chemistry 2020 v.68 no.49 pp. 14364-14373
ISSN:
1520-5118
Subject:
adulterated products,   etc   ; adulterants; anaphylaxis; detection limit; food chemistry; food fraud; food industry; health hazards; nuclear magnetic resonance spectroscopy; peanuts; risk; signal-to-noise ratio; spectrometers;     Show all 13 Subjects
Abstract:
... The addition of cheap and also readily available raw materials, such as peanut powder, to visually and chemically similar matrices is a common problem in the food industry. When peanuts are used as an adulterant, there is an additional risk of potential health hazard to consumers as a result of allergy-induced anaphylaxis. In this study, different series of peanut admixtures to visually similar fo ...
DOI:
10.1021/acs.jafc.0c01999

7. Peptides as Potential Biomarkers for Authentication of Mountain-Cultivated Ginseng and Cultivated Ginseng of Different Ages Using UPLC-HRMS

Author:
Zhao, Nan; Cheng, Mengchun; Lv, Wei; Wu, Yulin; Liu, Dan; Zhang, Xiaozhe
Source:
Journal of agricultural and food chemistry 2020 v.68 no.7 pp. 2263-2275
ISSN:
1520-5118
Subject:
adulterated products,   etc   ; Panax ginseng; biomarkers; cold; dehydrins; drought; gene expression regulation; ginsenosides; liquid chromatography; markets; mass spectrometry; nitrogen; peptides; prices; quality control; trade;     Show all 16 Subjects
Abstract:
... The growth conditions and age of Panax ginseng are vital for determining the quality of the ginseng plant. However, the considerable difference in price according to the cultivation method and period of P. ginseng leads to its adulteration in the trade market. We herein focused on ginseng peptides and the possibility of these peptides to be used as biomarker(s) for discrimination of P. ginseng. We ...
DOI:
10.1021/acs.jafc.9b05568

8. Chemical Barcoding: A Nuclear-Magnetic-Resonance-Based Approach To Ensure the Quality and Safety of Natural Ingredients

Author:
Martinez-Farina, Camilo F.; Driscoll, Stephen; Wicks, Chelsi; Burton, Ian; Wentzell, Peter D.; Berrué, Fabrice
Source:
Journal of agricultural and food chemistry 2019 v.67 no.27 pp. 7765-7774
ISSN:
1520-5118
Subject:
adulterated products,   etc   ; additives; adulterants; barcoding; certification; functional foods; ingredients; nuclear magnetic resonance spectroscopy; processed foods;     Show all 9 Subjects
Abstract:
... One of the greatest challenges facing the functional food and natural health product (NHP) industries is sourcing high-quality, functional, natural ingredients for their finished products. Unfortunately, the lack of ingredient standards, modernized analytical methodologies, and industry oversight creates the potential for low quality and, in some cases, deliberate adulteration of ingredients. By e ...
DOI:
10.1021/acs.jafc.9b01066

9. Identifying Fraudulent Natural Products: A Perspective on the Application of Carbon-14 Analysis

Author:
Gershon, Haley; Lykkeberg, Anna; Goren, Florencia; Mason, Stephany
Source:
Journal of agricultural and food chemistry 2019 v.67 no.49 pp. 13393-13399
ISSN:
1520-5118
Subject:
adulterated products,   etc   ; analytical methods; biomass; carbon 14; garlic; industry; ingredients; oils; quality control; radiocarbon dating;     Show all 10 Subjects
Abstract:
... Across food and supplement industries, there is a growing trend toward products comprised of natural ingredients. As manufacturers strive to offer “natural” products to consumers, adulteration of ingredients with cheaper synthetic alternatives becomes a concern. This perspective highlights the application of carbon-14 analysis to screen for potential adulteration of natural ingredients, such as ga ...
DOI:
10.1021/acs.jafc.9b01821

10. A Rapid Non-Targeted Method for Detecting the Adulteration of Black Pepper with a Broad Range of Endogenous and Exogenous Material at Economically Motivating Levels Using Micro-ATR-FT-MIR Imaging

Author:
Lafeuille, Jean-Louis; Frégière-Salomon, Aline; Michelet, Alexandre; Henry, Karen L.
Source:
Journal of agricultural and food chemistry 2019 v.68 no.1 pp. 390-401
ISSN:
1520-5118
Subject:
adulterated products,   etc   ; Fourier transform infrared spectroscopy; adulterants; black pepper; bulking agents; chemical composition; image analysis; microscopy; principal component analysis; probability;     Show all 10 Subjects
Abstract:
... Infrared spectroscopy is often used as a simple, fast, and green method to screen for economically motivated adulteration in spices. However, conventional microscopy remains the reference method. In this research, the combination of microscopy and Fourier-transform infrared spectroscopy in mapping mode, namely, micro-FTIR imaging, along with Principle Component Analysis were used to develop a non- ...
DOI:
10.1021/acs.jafc.9b03865

11. N-Glycan Profile as a Tool in Qualitative and Quantitative Analysis of Meat Adulteration

Author:
Shi, Zihe; Yin, Binru; Li, Yuquan; Zhou, Guanghong; Li, Chunbao; Xu, Xinglian; Luo, Xin; Zhang, Xibin; Qi, Jun; Voglmeir, Josef; Liu, Li
Source:
Journal of agricultural and food chemistry 2019 v.67 no.37 pp. 10543-10551
ISSN:
1520-5118
Subject:
adulterated products,   etc   ; beef; chickens; duck meat; ducks; glycosylation; least squares; model validation; mutton; pork; prediction; principal component analysis; quantitative analysis;     Show all 13 Subjects
Abstract:
... Adulteration of meat and meat products causes concerns to consumers. It is necessary to develop novel robust and sensitive methods that can authenticate the origin of meat by qualitative and quantitative means to minimize the drawbacks of the existing methods. This study has shown that the protein N-glycosylation profiles of different meats are species specific and thus can be used for meat authen ...
DOI:
10.1021/acs.jafc.9b03756

12. Review of Recent DNA-Based Methods for Main Food-Authentication Topics

Author:
Böhme, Karola; Calo-Mata, Pilar; Barros-Velázquez, Jorge; Ortea, Ignacio
Source:
Journal of agricultural and food chemistry 2019 v.67 no.14 pp. 3854-3864
ISSN:
1520-5118
Subject:
adulterated products,   etc   ; analytical methods; food composition; food fraud; food production; ingredients; laws and regulations; product authenticity; stakeholders;     Show all 9 Subjects
Abstract:
... Adulteration and mislabeling of food products and the commercial fraud derived, either intentionally or not, is a global source of economic fraud to consumers but also to all stakeholders involved in food production and distribution. Legislation has been enforced all over the world aimed at guaranteeing the authenticity of the food products all along the distribution chain, thereby avoiding food f ...
DOI:
10.1021/acs.jafc.8b07016

13. Gas Chromatography Combustion Isotope Ratio Mass Spectrometry for Improving the Detection of Authenticity of Grape Must

Author:
Perini, M.; Strojnik, L.; Paolini, M.; Camin, F.
Source:
Journal of agricultural and food chemistry 2020 v.68 no.11 pp. 3322-3329
ISSN:
1520-5118
Subject:
adulterated products,   etc   ; beet sugar; carbon; certification; combustion; derivatization; fraud; fruits; gas chromatography; grains; grape must; grapes; international organizations; isotope labeling; mass spectrometry; nitrogen; prices; proline; stable isotopes; sugars; syrups; vegetables; vines; wines;     Show all 24 Subjects
Abstract:
... Since ancient times, grape must and wine have been considered one of the most sophisticated matrices and, in the last few years, the continuous rise in volumes and prices of grapes and wine has encouraged fraud and adulteration in the oenological field. One of the most common adulterations is sugar addition to grape must in the form of cane or beet sugar or syrup coming from vegetable sources, suc ...
DOI:
10.1021/acs.jafc.9b05952

14. Characterization of Novel Protein Component as Marker for Floral Origin of Jujube (Ziziphus jujuba Mill.) Honey

Author:
Zhang, Ying; Wang, Yuxiang; Zhao, Haoan; Zhang, Guangyan; Peng, Deju; Cao, Wei
Source:
Journal of agricultural and food chemistry 2019 v.67 no.44 pp. 12255-12263
ISSN:
1520-5118
Subject:
adulterated products,   etc   ; Ziziphus jujuba; botanical composition; genes; heat; honey; liquid chromatography; mass spectrometry; molecular weight; pH; polyacrylamide gel electrophoresis; proteins; provenance; royal jelly; China;     Show all 15 Subjects
Abstract:
... Jujube (Ziziphus jujuba Mill.) honey, one of the most valuable honey varieties from China with unique characteristics, is vulnerable to being the target of adulteration and deliberate mislabeling of botanical origin. This study investigated the typical protein component of jujube honey to authenticate the floral source by SDS-PAGE analysis combined with LC–MS/MS identification, and its stability t ...
DOI:
10.1021/acs.jafc.9b05190

15. Detection and Quantitation of Frauds in the Authentication of Cranberry-Based Extracts by UHPLC-HRMS (Orbitrap) Polyphenolic Profiling and Multivariate Calibration Methods

Author:
Barbosa, Sergio; Pardo-Mates, Naiara; Hidalgo-Serrano, Miriam; Saurina, Javier; Puignou, Lluis; Núñez, Oscar
Source:
Journal of agricultural and food chemistry 2018 v.66 no.35 pp. 9353-9365
ISSN:
1520-5118
Subject:
adulterated products,   etc   ; adulterants; caffeic acid; calibration; computer software; databases; drugs; fruits; least squares; principal component analysis; procyanidins; syrups;     Show all 12 Subjects
Abstract:
... UHPLC-HRMS (Orbitrap) polyphenolic profiling was applied to the characterization, classification, and authentication of cranberry-based natural and pharmaceutical products. Fifty three polyphenolic standards were characterized to build a user-accurate mass database which was then proposed to obtain UHPLC-HRMS polyphenolic profiles by means of ExactFinder software. Principal component analysis resu ...
DOI:
10.1021/acs.jafc.8b02855

16. Screening Method for Argan Oil Adulteration with Vegetable Oils: An Online HPLC Assay with Postcolumn Detection Utilizing Chemometric Multidata Analysis

Author:
Çelik, Saliha Esin; Asfoor, Adel; Şenol, Onur; Apak, Reşat
Source:
Journal of agricultural and food chemistry 2019 v.67 no.29 pp. 8279-8289
ISSN:
1520-5118
Subject:
adulterated products,   etc   ; 2,2-diphenyl-1-picrylhydrazyl; Helianthus annuus; antioxidant activity; beta-sitosterol; chemometrics; corn; corn oil; discriminant analysis; isomers; least squares; models; olives; product authenticity; reversed-phase high performance liquid chromatography; screening; vegetable oil;     Show all 17 Subjects
Abstract:
... This study is focused on examining the tocopherol isomers (α-, γ-, and δ-) fingerprinting by online RP-HPLC analysis with post column detection using CUPRAC (cupric reducing antioxidant capacity) methodology for argan oil authenticity. The proposed online assay was validated with good precision, reproducibility, and linearity. Sixteen argan oil samples (100% pure-certified and other commercial arg ...
DOI:
10.1021/acs.jafc.9b03001

17. Wide-Scope Screening of Illegal Adulterants in Dietary and Herbal Supplements via Rapid Polarity-Switching and Multistage Accurate Mass Confirmation Using an LC-IT/TOF Hybrid Instrument

Author:
Guo, Bin; Wang, Meiling; Liu, Yanyan; Zhou, Jing; Dai, Hua; Huang, Zhiqiang; Shen, Lingling; Zhang, Qinsheng; Chen, Bo
Source:
Journal of agricultural and food chemistry 2015 v.63 no.31 pp. 6954-6967
ISSN:
0021-8561
Subject:
adulterated products,   etc   ; databases; food matrix; herbal medicines; mass spectrometry; screening;     Show all 6 Subjects
Abstract:
... A new analytical strategy was developed that integrates a generic sample preparation into a liquid chromatography–multistage ion trap/time-of-flight mass spectrometry (LC-IT(MSn)/TOF), allowing for large-scale screening and qualitative confirmation of wide-scope illegal adulterants in different food matrices. Samples were pretreated by a fast single-tube multifunction extraction for accurate mul ...
DOI:
10.1021/acs.jafc.5b02222

18. Identification of Peptide Biomarkers for Discrimination of Shrimp Species through SWATH-MS-Based Proteomics and Chemometrics

Author:
Hu, Lingping; Zhang, Hongwei; Zhang, Xiaomei; Zhang, Tiantian; Chang, Yaoguang; Zhao, Xue; Xu, Jie; Xue, Yong; Li, Zhaojie; Wang, Yuming; Xue, Changhu
Source:
Journal of agricultural and food chemistry 2018 v.66 no.40 pp. 10567-10574
ISSN:
1520-5118
Subject:
adulterated products,   etc   ; Fenneropenaeus chinensis; Litopenaeus vannamei; Marsupenaeus japonicus; biomarkers; chemometrics; discriminant analysis; least squares; mass spectrometry; monitoring; peptides; proteome; proteomics; screening; shrimp; statistical models; ultra-performance liquid chromatography;     Show all 17 Subjects
Abstract:
... Incorrect labeling and adulteration of shrimp occurs due to interspecies similarities and carapace removal during processing. This study attempted to identify three related commercial shrimp species of the order Decapoda: Marsupenaeus japonicus, Fenneropenaeus chinensis, and Litopenaeus vannamei. All measurable trypsin-digested peptides in the individual shrimp were detected using ultrahigh-perfor ...
DOI:
10.1021/acs.jafc.8b04375

19. Metabolomic Approach for the Authentication of Berry Fruit Juice by Liquid Chromatography Quadrupole Time-of-Flight Mass Spectrometry Coupled to Chemometrics

Author:
Zhang, Jiukai; Yu, Qiuhao; Cheng, Haiyan; Ge, Yiqiang; Liu, Han; Ye, Xingqian; Chen, Ying
Source:
Journal of agricultural and food chemistry 2018 v.66 no.30 pp. 8199-8208
ISSN:
1520-5118
Subject:
adulterated products,   etc   ; adulterants; anthocyanins; apple juice; biomarkers; blueberries; chemometrics; cranberries; databases; grape juice; isotopes; liquid chromatography; markets; mass spectrometry; metabolome; metabolomics; prediction;     Show all 17 Subjects
Abstract:
... Berry fruit juice, which is represented by blueberry and cranberry juice, has become increasingly popular due to its reported nutritional and health benefits. However, in markets, adulteration of berry fruit juice with cheaper substitutes is frequent. In the present study, a metabolomic approach for authentication of berry fruit juices by liquid chromatography coupled with quadrupole time-of-fligh ...
DOI:
10.1021/acs.jafc.8b01682

20. Screening and Assessment of Low-Molecular-Weight Biomarkers of Milk from Cow and Water Buffalo: An Alternative Approach for the Rapid Identification of Adulterated Water Buffalo Mozzarellas

Author:
Dal Bosco, Chiara; Panero, Stefania; Navarra, Maria Assunta; Tomai, Pierpaolo; Curini, Roberta; Gentili, Alessandra
Source:
Journal of agricultural and food chemistry 2018 v.66 no.21 pp. 5410-5417
ISSN:
1520-5118
Subject:
adulterated products,   etc   ; beta-carotene; beta-cryptoxanthin; biomarkers; buffalo milk; buffaloes; cows; ergocalciferol; fraud; genomics; liquid chromatography; lutein; milk; prices; proteomics; screening; tandem mass spectrometry;     Show all 17 Subjects
Abstract:
... Adulteration of Mozzarella di Bufala Campana with cow milk is a common fraud because of the high price and limited seasonal availability of water buffalo milk. To identify such adulteration, this work proposes a novel approach based on the use of species-specific, low-molecular-weight biomarkers (LMWBs). Liquid chromatography–tandem mass spectrometry screening analyses identified β-carotene, lutei ...
DOI:
10.1021/acs.jafc.8b01270