1
|
Wang D, Yu Z, Guo J, Liu M, Guan M, Gu Y, Li S, Ren D, Yi L. Development and comparison of parallel reaction monitoring and data-independent acquisition methods for quantitative analysis of hydrophilic compounds in white tea. J Chromatogr A 2024; 1715:464601. [PMID: 38160583 DOI: 10.1016/j.chroma.2023.464601] [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: 10/04/2023] [Revised: 12/19/2023] [Accepted: 12/21/2023] [Indexed: 01/03/2024]
Abstract
In the present work, parallel reaction monitoring (PRM) and data-independent acquisition (DIA) methods were developed for the accurate quantitation of amino acids, alkaloids nucleosides and nucleotides in tea. The quality peaks were significantly enhanced by optimizing the LC elution procedure, HCD voltage, MS resolution, and scanning event. Both methods were validated with good liner linearity (0.004-200 μg/mL), LODs (0.001-0.309 μg/mL for PRM and 0.001-0.564 μg/mL for DIA). Applied to white tea sample, the contents of these hydrophilic compounds were range from 34,655.39 to 70,586.14 mg/kg, and caffeine (32,529.02 mg/kg) and theanine (5483.46 mg/kg) were determined as the most abundant ones. Based on the quantitation data set, the white tea samples from Puer, Lincang and Xishuangbanna were clearly discriminated using multivariate data analysis. The results of the present works show that PRM and DIA have great potential in quantitative analysis of multiple hydrophilic compounds in food samples.
Collapse
Affiliation(s)
- Dan Wang
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Zhihao Yu
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Jie Guo
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Meiyan Liu
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Mengdi Guan
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Ying Gu
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Siyu Li
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Dabing Ren
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China.
| | - Lunzhao Yi
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China.
| |
Collapse
|
2
|
Ortega A, Zhao H, Van Amburgh ME. Development and Validation of a Method for Hydrolysis and Analysis of Amino Acids in Ruminant Feeds, Tissue, and Milk Using Isotope Dilution Z-HILIC Coupled with Electrospray Ionization Triple Quadrupole LC-MS/MS. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:833-844. [PMID: 38117943 PMCID: PMC10786030 DOI: 10.1021/acs.jafc.3c05266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 11/15/2023] [Accepted: 11/17/2023] [Indexed: 12/22/2023]
Abstract
Current analytical methods for amino acid (AA) analysis in ruminant nutrition are time-consuming and expensive. This study aimed to develop a method for AA analysis that is faster, more efficient, rugged, and accessible. Four representative matrixes were selected for method development and validation: milk, tissue, feed, and soy flour standard reference material from National Institute of Standards and Technology. Acid and alkaline hydrolysis were used to analyze 18 AA. Separation of AA was performed using a Z-HILIC column in an 18-min run coupled to a triple quadrupole LC/MS system in positive and negative electrospray ionization for identification and quantitation. The method was evaluated for recovery, precision, calibration curve linearity, and limits of detection (LODs) and limits of quantitation (LOQs) and applied to other feed samples. Good quantitation results were achieved for all AA, with coefficients of determination (R2) over 0.995; LODs at 0.2-28.2 and LOQs at 0.7-94.1 ng/mL; intraday and interday precision <14.9% relative standard deviation; blank recovery between 75.6 and 116.2%; and sample recovery between 75.6 and 118.0%. Overall, AA concentrations were similar to literature values, and there was a tendency for higher N recovery as AA. In conclusion, an efficient and robust method was validated to routinely analyze AA for appropriate characterization in diet formulation for dairy cattle.
Collapse
Affiliation(s)
- Andres
F. Ortega
- Department
of Animal Science, Cornell University, Ithaca, New York 14853, United States
| | - Hui Zhao
- Agilent
Technologies Inc, Wilmington, Delaware 19808, United States
| | | |
Collapse
|
3
|
Zhang L, Li N, Chen S, Bian X, Farag MA, Ge Y, Xiao J, Wu JL. Carboxyl-containing compounds in food: Category, functions, and analysis with chemical derivatization-based LC-MS. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
4
|
Soodpakdee K, Nacha J, Rattanachart N, Owatworakit A, Chamyuang S. Fermentation With Pleurotus Ostreatus Enhances the Prebiotic Properties of Germinated Riceberry Rice. Front Nutr 2022; 9:839145. [PMID: 35495911 PMCID: PMC9039537 DOI: 10.3389/fnut.2022.839145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Accepted: 03/11/2022] [Indexed: 11/13/2022] Open
Abstract
Rice is the staple food for more than half of the world's population. In recent years, awareness of the health benefits of colored rice varieties and germinated rice has gradually increased. Riceberry rice (R), a black-purple variety, was germinated and subsequently fermented with Pleurotus ostreatus mycelium (M) to improve nutrient quality and prebiotic properties. The γ-aminobutyric acid (GABA) and β-glucan contents were measured daily for a total of 4 days. The prebiotic activities of R, germinated Riceberry rice (GR), and germinated Riceberry rice with mycelium (GRM) were evaluated on the probiotic bacteria Pediococcus sp., Lactobacillus acidophilus, and Streptococcus lactis. Results were compared with the M treatment and with the commercial prebiotic agents: inulin and β-glucan. The treatments were also used to evaluate growth of the pathogen Escherichia coli. The GABA content peaked after 3 days of germination. The GR sample fermented with M for 3 days had the optimal concentration of both β-glucan and GABA. Evaluation of the prebiotic properties of rice samples and the commercial standards (inulin and β-glucan) showed that these were enhanced on the GR and GRM treatments. Results also showed the improvement of prebiotic properties on GR as the R sample did not show any prebiotic properties in all probiotic bacteria, whereas the GR sample showed moderate prebiotic activity score of 0.40, 0.88, and 0.56 on Pediococcus sp., L. acidophilus, and S. lactis, respectively. Furthermore, the prebiotic activity of GR was improved when fermented with M. For further applications, the GRM could be used on rice-based products, such as rice flour, rice crackers, or other rice products to enhance nutritional value and improve digestive system health, especially in the elderly.
Collapse
Affiliation(s)
| | - Jutamat Nacha
- Microbial Products and Innovation Research Group, Mae Fah Luang University, Chiang Rai, Thailand
| | | | - Amorn Owatworakit
- School of Science, Mae Fah Luang University, Chiang Rai, Thailand.,Microbial Products and Innovation Research Group, Mae Fah Luang University, Chiang Rai, Thailand
| | - Sunita Chamyuang
- School of Science, Mae Fah Luang University, Chiang Rai, Thailand.,Microbial Products and Innovation Research Group, Mae Fah Luang University, Chiang Rai, Thailand
| |
Collapse
|
5
|
Xu R, Abune L, Davis B, Ouyang L, Zhang G, Wang Y, Zhe J. Ultrasensitive detection of small biomolecules using aptamer-based molecular recognition and nanoparticle counting. Biosens Bioelectron 2022; 203:114023. [DOI: 10.1016/j.bios.2022.114023] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 01/11/2022] [Accepted: 01/17/2022] [Indexed: 01/12/2023]
|
6
|
Yılmaz C, Gökmen V. Perspective on the Formation, Analysis, and Health Effects of Neuroactive Compounds in Foods. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:13364-13372. [PMID: 34738798 DOI: 10.1021/acs.jafc.1c05181] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Foods contain neuroactive compounds, such as γ-aminobutyric acid, serotonin, kynurenic acid, and catecholamines. Neuroactive compounds synthesized by humans have various behavioral and physiological roles. It is thus significant for future studies to investigate how diet-derived neuroactive compounds can impact human health and mood. In this perspective, we provide a background for the brief formation mechanisms of neuroactive compounds in plants and microorganisms, their concentrations in foods, and their potential health effects. Liquid chromatography approaches for the analysis of neuroactive compounds are highlighted, together with the extraction procedures. The possibilities for the design of novel foods containing neuroactive compounds are also discussed.
Collapse
Affiliation(s)
- Cemile Yılmaz
- Food Quality and Safety (FoQuS) Research Group, Department of Food Engineering, Hacettepe University, 06800 Beytepe, Ankara, Turkey
| | - Vural Gökmen
- Food Quality and Safety (FoQuS) Research Group, Department of Food Engineering, Hacettepe University, 06800 Beytepe, Ankara, Turkey
| |
Collapse
|
7
|
Determination of seventeen free amino acids in human urine and plasma samples using quadruple isotope dilution mass spectrometry combined with hydrophilic interaction liquid chromatography - Tandem mass spectrometry. J Chromatogr A 2021; 1641:461970. [PMID: 33611120 DOI: 10.1016/j.chroma.2021.461970] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Revised: 02/01/2021] [Accepted: 02/03/2021] [Indexed: 11/23/2022]
Abstract
Taking into account the growing demand for new analytical procedures that are appropriate for analysis of complex biological samples with increased sensitivity, accuracy and precision, a novel analytical method was described for the determination of underivatized amino acids in human plasma and urine samples. The presented analytical procedure involved the direct analysis of urine samples and the analysis of plasma samples followed by a simple protein precipitation protocol. Samples were analyzed using a simple and fast chromatographic method developed for the determination of 17 different amino acids by liquid chromatography - tandem mass spectrometry. The limit of detection and quantification values for amino acids were ranged between 0.03-2.26 µmol kg-1 and 0.09-7.54 µmol kg-1. Matrix effects of plasma and urine on the quantification of analytes were determined by spiking experiments. The accuracy of method was evaluated by matrix matching and quadruple isotope dilution strategies. Excellent accuracy and precision were obtained with the use isotope labeled amino acids demonstrating the high reliability and reproducibility of the proposed method. The percent recovery values were found to be between 98.70 - 101.68% with%RSD below than 1.62% for human plasma and 99.14 - 101.78% with%RSD below than 2.44% for urine samples.
Collapse
|
8
|
Free amino acids in African indigenous vegetables: Analysis with improved hydrophilic interaction ultra-high performance liquid chromatography tandem mass spectrometry and interactive machine learning. J Chromatogr A 2020; 1637:461733. [PMID: 33385745 DOI: 10.1016/j.chroma.2020.461733] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 10/20/2020] [Accepted: 11/16/2020] [Indexed: 12/12/2022]
Abstract
A hydrophilic interaction (HILIC) ultra-high performance liquid chromatography (UHPLC) with triple quadrupole tandem mass spectrometry (MS/MS) method was developed and validated for the quantification of 21 free amino acids (AAs). Compared to published reports, our method renders collectively improved sensitivity with lower limit of quantification (LLOQ) at 0.5~42.19 ng/mL with 0.3 μL injection volume (or equivalently 0.15~12.6 pg injected on column), robust linear range from LLOQ up to 3521~5720 ng/mL (or 1056 ~ 1716 pg on column) and a high throughput with total time of 6 min per sample, as well as easier experimental setup, less maintenance and higher adaptation flexibility. Ammonium formate in the mobile phase, though commonly used in HILIC, was found unnecessary in our experimental setup, and its removal from mobile phase was key for significant improvement in sensitivity (4~74 times higher than with 5 mM ammonium formate). Addition of 10 (or up to100 mM) hydrochloric acid (HCl) in the sample diluent was crucial to keep response linearity for basic amino acids of histidine, lysine and arginine. Different HCl concentration (10~100 mM) in sample diluent also excreted an effect on detection sensitivity, and it is of importance to keep the final prepared sample and calibrators in the same HCl level. Leucine and isoleucine were distinguished using different transitions. Validated at seven concentration levels, accuracy was bound within 75~125%, matrix effect generally within 90~110%, and precision error mostly below 2.5%. Using this newly developed method, the free amino acids were then quantified in a total of 544 African indigenous vegetables (AIVs) samples from African nightshades (AN), Ethiopian mustards (EM), amaranths (AM) and spider plants (SP), comprising a total of 8 identified species and 43 accessions, cultivated and harvested in USA, Kenya and Tanzania over several years, 2013~2018. The AN, EM, AM and SP were distinguished based on free AAs profile using machine learning methods (ML) including principle component analysis, discriminant analysis, naïve Bayes, elastic net-regularized logistic regression, random forest and support vector machine, with prediction accuracy achieved at ca. 83~97% on the test set (train/test ratio at 7/3). An interactive ML platform was constructed using R Shiny at https://boyuan.shinyapps.io/AIV_Classifier/ for modeling train-test simulation and category prediction of unknown AIV sample(s). This new method presents a robust and rapid approach to quantifying free amino acids in plants for use in evaluating plants, biofortification, botanical authentication, safety, adulteration and with applications to nutrition, health and food product development.
Collapse
|
9
|
Qiu X, Reynolds R, Johanningsmeier S, Truong VD. Determination of free amino acids in five commercial sweetpotato cultivars by hydrophilic interaction liquid chromatography-mass spectrometry. J Food Compost Anal 2020. [DOI: 10.1016/j.jfca.2020.103522] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
10
|
Hu H, Smith S, Li X, Qian Z, Su Y, Lin M, Tu J, Liu YM. Fast quantification of free amino acids in food by microfluidic voltage-assisted liquid desorption electrospray ionization-tandem mass spectrometry. Anal Bioanal Chem 2020; 412:1947-1954. [PMID: 32020315 PMCID: PMC8717839 DOI: 10.1007/s00216-020-02450-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 01/17/2020] [Accepted: 01/22/2020] [Indexed: 12/19/2022]
Abstract
A method based on microfluidic voltage-assisted liquid desorption electrospray ionization-tandem mass spectrometry (VAL-DESI-MS/MS) has been developed for fast quantification of free amino acids in food. Food extracts were transferred to the microfluidic platform and analyzed by liquid desorption ESI-MS/MS. Deuterated aspartic acid (i.e., 2,2,3-d3-Asp) was used as internal standard for analysis. The method had linear calibration curves with r2 values > 0.998. Limits of detection were at the level of sub μM for the amino acids tested, i.e., glutamic acid (Glu), arginine (Arg), tyrosine (Tyr), tryptophan (Trp), and phenylalanine (Phe). To validate the proposed method in food analysis, extracts of Cordyceps fungi were analyzed. Amino acid contents were found in the range from 0.63 mg/g (Tyr in Cordyceps sinensis) to 4.44 mg/g (Glu in Cordyceps militaris). Assay repeatability (RSD) was ≤ 5.2% for all the five amino acids measured in all the samples analyzed. Recovery was found in the range from 95.8 to 105.1% at two spiking concentrations of 0.250 mg/g and 1.00 mg/g. These results prove that the proposed microfluidic VAL-DESI-MS/MS method offers a quick and convenient means of quantifying free amino acids with accuracy and repeatability. Therefore, it may have potential in food analysis for nutritional and quality assessment purposes. Graphical abstract.
Collapse
Affiliation(s)
- Hankun Hu
- Zhongnan Hospital, Wuhan University, 169 Donghu Rd, Wuhan, 430071, Hubei, China
| | - Shila Smith
- Department of Chemistry and Biochemistry, Jackson State University, 1400 Lynch Street, Jackson, MS, 39217, USA
| | - Xiangtang Li
- Department of Chemistry and Biochemistry, Jackson State University, 1400 Lynch Street, Jackson, MS, 39217, USA
| | - Zhengming Qian
- Key Laboratory of State Administration of Traditional Chinese Medicine, Sunshine Lake Pharma Co., Ltd, Dongguan, 523850, Guangdong, China
| | - Yaxia Su
- Zhongnan Hospital, Wuhan University, 169 Donghu Rd, Wuhan, 430071, Hubei, China
| | - Manting Lin
- Zhongnan Hospital, Wuhan University, 169 Donghu Rd, Wuhan, 430071, Hubei, China
| | - Jiancheng Tu
- Zhongnan Hospital, Wuhan University, 169 Donghu Rd, Wuhan, 430071, Hubei, China.
| | - Yi-Ming Liu
- Department of Chemistry and Biochemistry, Jackson State University, 1400 Lynch Street, Jackson, MS, 39217, USA.
| |
Collapse
|
11
|
Rueda ÁA, Jurado JM, de Pablos F, León-Camacho M. Differentiation between Ripening Stages of Iberian Dry-Cured Ham According to the Free Amino Acids Content. Foods 2020; 9:E82. [PMID: 31940912 PMCID: PMC7022291 DOI: 10.3390/foods9010082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 01/08/2020] [Accepted: 01/09/2020] [Indexed: 11/16/2022] Open
Abstract
In this paper, the differentiation of three ripening stages, postsalting, drying, and cellar, of Iberian dry-cured ham has been carried out according to their free amino acids contents. Eighteen L-amino acids, alanine, 2-aminobutanoic acid, aspartic acid, cysteine, glutamine, glycine, histidine, hydroxyproline, isoleucine, leucine, lysine, methionine, phenylalanine, proline, serine, threonine, tyrosine, and valine have been determined by gas chromatography with derivatization with N,O-bis(trimethylsilyl)-trifluoroacetamide. Gas chromatography-mass spectrometry was used to confirm the presence of the eighteen amino acids in the ham samples, and gas chromatography using a DB-17HT column and flame ionization detector was used for quantitative determination. Extraction with a mixture methanol-acetonitrile has been carried out, achieving recoveries in the range 52-164%. Methimazole was used as internal standard. Limits of detection ranged between 7.0 and 611.7 mg·kg-1. Free amino acids have been used as chemical descriptors to differentiate between the ripening stages. Principal component analysis and linear discriminant analysis have been used as chemometric techniques, achieving complete differentiation between the ripening stages. Alanine, tyrosine, glutamine, proline, 2-aminobutanoic acid, cysteine, and valine were the most differentiating amino acids.
Collapse
Affiliation(s)
- Ángela Alcazar Rueda
- Department of Analytical Chemistry, Faculty of Chemistry, University of Seville, calle Profesor García González 1, E-41012 Seville, Spain (J.M.J.); (F.d.P.)
| | - José Marcos Jurado
- Department of Analytical Chemistry, Faculty of Chemistry, University of Seville, calle Profesor García González 1, E-41012 Seville, Spain (J.M.J.); (F.d.P.)
| | - Fernando de Pablos
- Department of Analytical Chemistry, Faculty of Chemistry, University of Seville, calle Profesor García González 1, E-41012 Seville, Spain (J.M.J.); (F.d.P.)
| | - Manuel León-Camacho
- Lipid Characterization and Quality Department. Instituto de la Grasa (C.S.I.C.), Ctra. Utrera km 1, Campus Universitario Pablo de Olavide, Edificio 46, E-41013 Seville, Spain
| |
Collapse
|
12
|
Neuroactive compounds in foods: Occurrence, mechanism and potential health effects. Food Res Int 2019; 128:108744. [PMID: 31955786 DOI: 10.1016/j.foodres.2019.108744] [Citation(s) in RCA: 89] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 10/01/2019] [Accepted: 10/04/2019] [Indexed: 02/07/2023]
Abstract
Neuroactive compounds are synthesized by certain plants and microorganisms by undertaking different tasks, especially as a stress response. Most common neuroactive compounds in foods are gamma-aminobutyric acid (GABA), serotonin, melatonin, kynurenine, kynurenic acid, dopamine, norepinephrine, histamine, tryptamine, tyramine and β-phenylethylamine. Fermented foods contain some of these compounds, which can affect human health and mood. Moreover, food processing such as roasting and malting alter amount and profile of neuroactive compounds in foods. In addition to plant-origin and microbially-formed neuroactive compounds in foods, these substances are also formed by gut microbiota, which is the most attractive subject to assess the interaction between gut microbiota and mental health. The discovery of microbiota-gut-brain axis calls for the investigation of the effects of diet on the formation of neuroactive compounds in the gut. Furthermore, probiotics and prebiotics are indispensable elements for the understanding of the food-mood relationship. The focus of this comprehensive review is to investigate the neuroactive compounds found naturally in foods or formed during fermentation. Their formation pathways in humans, plants and microorganisms, potential health effects, effects of diet on the formation of microbial metabolites including neuroactive compounds in the gut are discussed throughout this review. Furthermore, the importance of gut-brain axis, probiotics and prebiotics are discussed.
Collapse
|
13
|
Tsochatzis E, Papageorgiou M, Kalogiannis S. Validation of a HILIC UHPLC-MS/MS Method for Amino Acid Profiling in Triticum Species Wheat Flours. Foods 2019; 8:foods8100514. [PMID: 31635326 PMCID: PMC6836243 DOI: 10.3390/foods8100514] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 10/10/2019] [Accepted: 10/12/2019] [Indexed: 12/02/2022] Open
Abstract
Amino acids are essential nutritional components as they occur in foods either in free form or as protein constituents. An ultra-high-performance (UHPLC) hydrophilic liquid chromatography (HILIC)-tandem Mass Spectrometry (MS) method has been developed and validated for the quantification of 17 amino acids (AA) in wheat flour samples after acid hydrolysis with 6 M HCl in the presence of 4% (v/v) thioglycolic acid as a reducing agent. The developed method proved to be a fast and reliable tool for acquiring information on the AA profile of cereal flours. The method has been applied and tested in 10 flour samples of spelt, emmer, and common wheat flours of organic or conventional cultivation and with different extraction rates (70%, 90%, and 100%). All the aforementioned allowed us to study and evaluate the variation of the AA profile among the studied flours, in relation to other quality characteristics, such as protein content, wet gluten, and gluten index. Significant differences were observed in the AA profiles of the studied flours. Moreover, AA profiles exhibited significant interactions with quality characteristics that proved to be affected based mainly on the type of grain. A statistical and multivariate analysis of the AA profiles and quality characteristics has been performed, as to identify potential interactions between protein content, amino acids, and quality characteristics.
Collapse
Affiliation(s)
- Emmanouil Tsochatzis
- Department of Chemical Engineering, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece.
| | - Maria Papageorgiou
- Department of Food Science and Technology, International Hellenic University, Sindos Campus, P.O. Box 141, GR-57400 Thessaloniki, Greece.
| | - Stavros Kalogiannis
- Department of Nutritional Sciences and Dietetics, International Hellenic University, Sindos Campus, P.O. Box 141, GR-57400 Thessaloniki, Greece.
| |
Collapse
|
14
|
Kölpin M, Hellwig M. Quantitation of Methionine Sulfoxide in Milk and Milk-Based Beverages-Minimizing Artificial Oxidation by Anaerobic Enzymatic Hydrolysis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:8967-8976. [PMID: 31334650 DOI: 10.1021/acs.jafc.9b03605] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Protein oxidation in milk products may entail flavor changes through reactions at methionine residues. However, little is known about the extent of methionine oxidation in milk and milk products. In the present study, a method for quantitation of methionine, methionine sulfoxide, and methionine sulfone by a stable isotope dilution assay using HILIC-ESI-MS/MS was established. For the quantitation of protein-bound analytes, anaerobic enzymatic hydrolysis was optimized to suppress artificial methionine oxidation. Moreover, the method allowed for monitoring of artificial oxidation by coincubation of the labeled probe [2H8]methionine. The percentage of oxidized methionine was low in UHT milk (up to 1.6%) and evaporated milk (up to 8.8%), but higher in beverages such as cocoa milk drinks (up to 19.0%) and coffee milk drinks (up to 32.8%), resulting in methionine sulfoxide concentrations of up to 6.7 g/kg protein in the latter. These products are important dietary sources of methionine sulfoxide. Model studies revealed that methionine residues can be oxidized strongly in the presence of phenolic compounds such as catechin, caffeic acid, and gallic acid, which are present in cocoa and coffee and may account for the high extent of oxidation in commercial samples.
Collapse
Affiliation(s)
- Martin Kölpin
- Chair of Food Chemistry , Technische Universität Dresden , D-01062 Dresden , Germany
| | - Michael Hellwig
- Chair of Food Chemistry , Technische Universität Dresden , D-01062 Dresden , Germany
| |
Collapse
|
15
|
Karademir Y, Gökmen V, Öztop HM. Investigation of lipid-derived formation of decadien-1-amine, 2-pentylpyridine, and acrylamide in potato chips fried in repeatedly used sunflower oil. Food Res Int 2019; 121:919-925. [DOI: 10.1016/j.foodres.2019.01.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Revised: 01/08/2019] [Accepted: 01/09/2019] [Indexed: 02/04/2023]
|
16
|
Gray N, Plumb RS, Wilson ID, Nicholson JK. A validated UPLC-MS/MS assay for the quantification of amino acids and biogenic amines in rat urine. J Chromatogr B Analyt Technol Biomed Life Sci 2019; 1106-1107:50-57. [DOI: 10.1016/j.jchromb.2018.12.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Revised: 12/20/2018] [Accepted: 12/27/2018] [Indexed: 02/01/2023]
|
17
|
Irakli M, Tsialtas IT, Lazaridou A. Determination of Free and Total Underivatized Amino Acids Including L-Canavanine in Bitter Vetch Seeds Using Hydrophilic Interaction Liquid Chromatography. ANAL LETT 2018. [DOI: 10.1080/00032719.2018.1444048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Maria Irakli
- Hellenic Agricultural Organization-Demeter, Institute of Plant Breeding and Genetic Resources, Thessaloniki, Greece
| | - Ioannis T. Tsialtas
- Laboratory of Agronomy, Faculty of Agriculture, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Athina Lazaridou
- Laboratory of Food Chemistry and Biochemistry, Department of Food Science and Technology, Faculty of Agriculture, Aristotle University of Thessaloniki, Thessaloniki, Greece
| |
Collapse
|
18
|
Moreno-Rojas JM, Moreno-Ortega A, Ordóñez JL, Moreno-Rojas R, Pérez-Aparicio J, Pereira-Caro G. Development and validation of UHPLC-HRMS methodology for the determination of flavonoids, amino acids and organosulfur compounds in black onion, a novel derived product from fresh shallot onions (Allium cepa var. aggregatum). Lebensm Wiss Technol 2018. [DOI: 10.1016/j.lwt.2018.07.032] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
|
19
|
Li M, Li D, Tai Y, Gu C, Song Y, Jiao W, Ning J, Wei C, Gu X, Ho CT, Hajano JUD, Wan X. Determination of free amino acids in tea by a novel method of reversed-phase high performance liquid chromatography applying 6-Aminoquinolyl- N-Hydroxysuccinimidyl carbamate reagent. Journal of Food Science and Technology 2018; 55:4276-4286. [PMID: 30228426 DOI: 10.1007/s13197-018-3366-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 05/07/2018] [Accepted: 07/30/2018] [Indexed: 11/24/2022]
Abstract
We describe a novel analytical method for quantification of free amino acids in tea using variable mobile phase pH, elution gradient and column temperature of reversed-phase high-performance liquid chromatography (RP-HPLC). The study of mobile phase pH 5.7 was chosen to simultaneous quantification of 19 free amino acids in tea, while it improved maximum resolution of glutamine, histidine and theanine. Elution gradient was adapted for enhancing the solution of free amino acids, mainly because of adjustment of mobile phase A and B. The column temperature of 40 °C was conducive to separate free amino acids in tea. The limit of detection (LOD) and limit of quantitation (LOQ) of this method were in the range of 0.097-0.228 nmol/mL and 0.323-0.761 nmol/mL, respectively. The relative standard deviation of intraday and interday ranged in 0.099-1.909% and 3.231-7.025%, respectively, indicating that the method was reproducible and precise, while recovery ranged between 81.06-112.78%, showing that the method had an acceptable accuracy. This method was applied for the quantification of free amino acids in six types of tea. Multivariate analysis identified serine, glutamine, theanine and leucine as the most influencing factor for classify among analyzed sample.
Collapse
Affiliation(s)
- Min Li
- 1State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui China.,2State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, 271018 Shandong China
| | - Daxiang Li
- 1State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui China
| | - Yuling Tai
- 1State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui China
| | - Chenchen Gu
- 1State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui China
| | - Yasai Song
- 1State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui China
| | - Weiting Jiao
- 1State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui China
| | - Jingming Ning
- 1State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui China
| | - Chaoling Wei
- 1State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui China
| | - Xungang Gu
- 1State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui China
| | - Chi-Tang Ho
- 3Department of Food Science, Rutgers University, New Brunswick, NJ USA
| | - Jamal U Ddin Hajano
- 4Department of Plant Pathology, Faculty of Crop Protection, Sindh Agriculture University, Tandojam, Pakistan
| | - Xiaochun Wan
- 1State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui China
| |
Collapse
|
20
|
Troise AD, Wiltafsky M, Fogliano V, Vitaglione P. The quantification of free Amadori compounds and amino acids allows to model the bound Maillard reaction products formation in soybean products. Food Chem 2018; 247:29-38. [PMID: 29277225 DOI: 10.1016/j.foodchem.2017.12.019] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2017] [Revised: 12/05/2017] [Accepted: 12/06/2017] [Indexed: 11/18/2022]
Abstract
The quantification of protein bound Maillard reaction products (MRPs) is still a challenge in food chemistry. Protein hydrolysis is the bottleneck step: it is time consuming and the protein degradation is not always complete. In this study, the quantitation of free amino acids and Amadori products (APs) was compared to the percentage of blocked lysine by using chemometric tools. Eighty thermally treated soybean samples were analyzed by mass spectrometry to measure the concentration of free amino acids, free APs and the protein-bound markers of the Maillard reaction (furosine, Nε-(carboxymethyl)-l-lysine, Nε-(carboxyethyl)-l-lysine, total lysine). Results demonstrated that Discriminant Analysis (DA) and Correlated Component Regression (CCR) correctly estimated the percent of blocked lysine in a validation and prediction set. These findings indicate that the measure of free markers reflects the extent of protein damage in soybean samples and it suggests the possibility to obtain rapid information on the quality of the industrial processes.
Collapse
Affiliation(s)
- Antonio Dario Troise
- Department of Agricultural Sciences, University of Naples Federico II, Naples, Italy.
| | | | - Vincenzo Fogliano
- Food Quality and Design, Wageningen University & Research, Wageningen, The Netherlands
| | - Paola Vitaglione
- Department of Agricultural Sciences, University of Naples Federico II, Naples, Italy
| |
Collapse
|
21
|
Luo T, Dong Y, He S, Yang J, Dong Y. Establishing a sensitive capillary electrophoresis-UV method for direct determination of amino acids to evaluate vinegar quality. Electrophoresis 2018; 39:1410-1416. [DOI: 10.1002/elps.201800001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 01/29/2018] [Accepted: 02/12/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Tian Luo
- Institute of Pharmaceutical Analysis, School of Pharmacy; Lanzhou University; Lanzhou Gansu Province P. R. China
| | - Yue Dong
- Institute of Pharmaceutical Analysis, School of Pharmacy; Lanzhou University; Lanzhou Gansu Province P. R. China
| | - Shujuan He
- Institute of Pharmaceutical Analysis, School of Pharmacy; Lanzhou University; Lanzhou Gansu Province P. R. China
| | - Jing Yang
- Institute of Pharmaceutical Analysis, School of Pharmacy; Lanzhou University; Lanzhou Gansu Province P. R. China
| | - Yuming Dong
- Institute of Pharmaceutical Analysis, School of Pharmacy; Lanzhou University; Lanzhou Gansu Province P. R. China
- Lanzhou Universty-Techcomp (China) Ltd Joint Laboratory of Pharmaceutical Analysis; Lanzhou Gansu Province P. R. China
| |
Collapse
|
22
|
Marrubini G, Appelblad P, Maietta M, Papetti A. Hydrophilic interaction chromatography in food matrices analysis: An updated review. Food Chem 2018; 257:53-66. [PMID: 29622230 DOI: 10.1016/j.foodchem.2018.03.008] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 02/28/2018] [Accepted: 03/01/2018] [Indexed: 01/27/2023]
Abstract
This review focuses on the most recent papers (from 2011 to submission date in 2017) dealing with the analysis of different organic components in foods (i.e. nucleobases, nucleosides, nucleotides, uric acid, and creatinine, amino acids and related compounds, choline-related compounds and phospholipids, carbohydrates, artificial sweeteners and polyphenolic compounds), using hydrophilic interaction liquid chromatography (HILIC) combined with different detection techniques. For each compound class, the investigated food matrices are grouped per: foods of animal origin, vegetables, fruits and related products, baby food, and other matrices such as drinks and mushrooms/fungi. Furthermore, the main advantages of HILIC chromatography respect to the other commonly used techniques are discussed.
Collapse
Affiliation(s)
- Giorgio Marrubini
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | | | - Mariarosa Maietta
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Adele Papetti
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| |
Collapse
|
23
|
Pina A, Begou O, Kanelis D, Gika H, Kalogiannis S, Tananaki C, Theodoridis G, Zotou A. Targeted profiling of hydrophilic constituents of royal jelly by hydrophilic interaction liquid chromatography-tandem mass spectrometry. J Chromatogr A 2017; 1531:53-63. [PMID: 29198446 DOI: 10.1016/j.chroma.2017.11.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Revised: 11/08/2017] [Accepted: 11/12/2017] [Indexed: 01/18/2023]
Abstract
In the present work a Hydrophilic Interaction Liquid Chromatography-tandem Mass Spectrometry (HILIC-MS/MS) method was developed for the efficient separation and quantification of a large number of small polar bioactive molecules in Royal Jelly. The method was validated and provided satisfactory detection sensitivity for 88 components. Quantification was proven to be precise for 64 components exhibiting good linearity, recoveries R% >90% for the majority of analytes and intra- and inter-day precision from 0.14 to 20% RSD. Analysis of 125 fresh royal jelly samples of Greek origin provided useful information on royal jelly's hydrophilic bioactive components revealing lysine, ribose, proline, melezitose and glutamic acid to be in high abundance. In addition the occurrence of 18 hydrophilic nutrients which have not been reported previously as royal jelly constituents is shown.
Collapse
Affiliation(s)
- Athanasia Pina
- Laboratory of Analytical Chemistry, School of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Olga Begou
- Laboratory of Analytical Chemistry, School of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Dimitris Kanelis
- Laboratory of Apiculture-Sericulture, School of Agriculture, Aristotle University of Thessaloniki, 54006 Thessaloniki, Greece
| | - Helen Gika
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
| | - Stavros Kalogiannis
- Department of Nutrition and Dietetics, Alexander Technological Educational Institute (ATEITH) of Thessaloniki, 57400 Thessaloniki, Greece
| | - Chrysoula Tananaki
- Laboratory of Apiculture-Sericulture, School of Agriculture, Aristotle University of Thessaloniki, 54006 Thessaloniki, Greece
| | - Georgios Theodoridis
- Laboratory of Analytical Chemistry, School of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Anastasia Zotou
- Laboratory of Analytical Chemistry, School of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
| |
Collapse
|
24
|
Luo T, Ke J, Xie Y, Dong Y. Determination of underivatized amino acids to evaluate quality of beer by capillary electrophoresis with online sweeping technique. J Food Drug Anal 2017; 25:789-797. [PMID: 28987354 PMCID: PMC9328872 DOI: 10.1016/j.jfda.2017.03.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 03/01/2017] [Accepted: 03/03/2017] [Indexed: 11/06/2022] Open
Abstract
Capillary electrophoresis (CE) with ultraviolet detection was applied to determine underivatized amino acids in beer, based on the coordination interaction of copper ions and amino acids. An online sweeping technique was combined with CE to improve detection sensitivity. Using the United Nations Food Agriculture Organization/World Health Organization model of essential amino acid pattern and flavor of amino acids, the quality and taste in three kinds of beer were evaluated. It was found that Beer2 had higher quality than the other two kinds and the content of phenylalanine, proline, serine, and isoleucine was relatively large in all three kinds of beers with a great influence on beer flavor. Optimal conditions for separation were as follows: 50mM CuSO4 at pH 4.40 as buffer; total length of fused silica capillary, 73 cm; effective length, 65 cm; separation voltage, 22.5 kV; and optimized sweeping condition, 70 seconds. In the appropriate range, linearity (r2 > 0.9989), precision with a relative standard deviation < 8.05% (n = 5), limits of detection (0.13–0.25 μg/mL), limit of quantification (0.43–0.83 μg/mL), and recovery (80.5–115.8%) were measured. This method was shown to be applicable to the separation of amino acids in beer and to perform quantitative analysis directly without derivatization for the first time.
Collapse
|
25
|
|
26
|
Gray N, Zia R, King A, Patel VC, Wendon J, McPhail MJW, Coen M, Plumb RS, Wilson ID, Nicholson JK. High-Speed Quantitative UPLC-MS Analysis of Multiple Amines in Human Plasma and Serum via Precolumn Derivatization with 6-Aminoquinolyl-N-hydroxysuccinimidyl Carbamate: Application to Acetaminophen-Induced Liver Failure. Anal Chem 2017; 89:2478-2487. [PMID: 28194962 DOI: 10.1021/acs.analchem.6b04623] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A targeted reversed-phase gradient UPLC-MS/MS assay has been developed for the quantification /monitoring of 66 amino acids and amino-containing compounds in human plasma and serum using precolumn derivatization with 6-aminoquinolyl-N-hydroxysuccinimidyl carbamate (AccQTag Ultra). Derivatization of the target amines required minimal sample preparation and resulted in analytes with excellent chromatographic and mass spectrometric detection properties. The resulting method, which requires only 10 μL of sample, provides the reproducible and robust separation of 66 analytes in 7.5 min, including baseline resolution of isomers such as leucine and isoleucine. The assay has been validated for the quantification of 33 amino compounds (predominantly amino acids) over a concentration range from 2 to 20 and 800 μM. Intra- and interday accuracy of between 0.05 and 15.6 and 0.78-13.7% and precision between 0.91 and 16.9% and 2.12-15.9% were obtained. A further 33 biogenic amines can be monitored in samples for relative changes in concentration rather than quantification. Application of the assay to samples derived from healthy controls and patients suffering from acetaminophen (APAP, paracetamol)-induced acute liver failure (ALF) showed significant differences in the amounts of aromatic and branched chain amino acids between the groups as well as a number of other analytes, including the novel observation of increased concentrations of sarcosine in ALF patients. The properties of the developed assay, including short analysis time, make it suitable for high-throughput targeted UPLC-ESI-MS/MS metabonomic analysis in clinical and epidemiological environments.
Collapse
Affiliation(s)
- Nicola Gray
- Biomolecular Medicine, Division of Computational and Systems Medicine, Department of Surgery and Cancer, Imperial College London , South Kensington, London SW7 2AZ, United Kingdom
| | - Rabiya Zia
- Biomolecular Medicine, Division of Computational and Systems Medicine, Department of Surgery and Cancer, Imperial College London , South Kensington, London SW7 2AZ, United Kingdom
| | - Adam King
- Biomolecular Medicine, Division of Computational and Systems Medicine, Department of Surgery and Cancer, Imperial College London , South Kensington, London SW7 2AZ, United Kingdom
| | - Vishal C Patel
- Institute of Liver Studies and Transplantation, Kings College Hospital , Denmark Hill, London SE5 9RS, United Kingdom
| | - Julia Wendon
- Institute of Liver Studies and Transplantation, Kings College Hospital , Denmark Hill, London SE5 9RS, United Kingdom
| | - Mark J W McPhail
- Institute of Liver Studies and Transplantation, Kings College Hospital , Denmark Hill, London SE5 9RS, United Kingdom
| | - Muireann Coen
- Biomolecular Medicine, Division of Computational and Systems Medicine, Department of Surgery and Cancer, Imperial College London , South Kensington, London SW7 2AZ, United Kingdom
| | - Robert S Plumb
- Biomolecular Medicine, Division of Computational and Systems Medicine, Department of Surgery and Cancer, Imperial College London , South Kensington, London SW7 2AZ, United Kingdom
| | - Ian D Wilson
- Biomolecular Medicine, Division of Computational and Systems Medicine, Department of Surgery and Cancer, Imperial College London , South Kensington, London SW7 2AZ, United Kingdom
| | - Jeremy K Nicholson
- Biomolecular Medicine, Division of Computational and Systems Medicine, Department of Surgery and Cancer, Imperial College London , South Kensington, London SW7 2AZ, United Kingdom.,MRC-NIHR National Phenome Centre, Division of Computational and Systems Medicine, Department of Surgery and Cancer, IRDB Building, Imperial College London, Hammersmith Hospital , London W12 0NN, United Kingdom
| |
Collapse
|
27
|
Hasanzadeh M, Sadeghi S, Bageri L, Mokhtarzadeh A, karimzadeh A, Shadjou N, Mahboob S. Poly-dopamine-beta-cyclodextrin: A novel nanobiopolymer towards sensing of some amino acids at physiological pH. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 69:343-57. [DOI: 10.1016/j.msec.2016.06.081] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 06/20/2016] [Accepted: 06/25/2016] [Indexed: 10/21/2022]
|
28
|
Hasanzadeh M, Karimzadeh A, Shadjou N, Mokhtarzadeh A, Bageri L, Sadeghi S, Mahboob S. Graphene quantum dots decorated with magnetic nanoparticles: Synthesis, electrodeposition, characterization and application as an electrochemical sensor towards determination of some amino acids at physiological pH. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 68:814-830. [DOI: 10.1016/j.msec.2016.07.026] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Revised: 07/04/2016] [Accepted: 07/12/2016] [Indexed: 11/25/2022]
|
29
|
Xie X, Chang F, Li X, Li M, Zhu Z. Investigation and application of photochemically induced direct UV detection of low or non-UV absorbing compounds by capillary electrophoresis. Talanta 2016; 162:362-367. [PMID: 27837841 DOI: 10.1016/j.talanta.2016.10.046] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Accepted: 10/08/2016] [Indexed: 11/13/2022]
Abstract
Some low or non-UV absorbing compounds like amino acids might be accessible to direct UV detection by capillary electrophoresis (CE), due to the photochemical reaction in the detection window of the separation capillary under extremely strong alkaline conditions. However, with regards to the photochemical reaction procedure and the influencing factors in CE, no comprehensive studies have been done. Herein, two strategies were applied to investigate the photochemical reaction mechanism including the introduction of an additional UV lamp and the utilization of driving pressure. The former confirmed the occurrence of photolysis, while the latter solved the interference of electroosmotic flow (EOF). Furthermore, the online photochemical reaction and online preconcentration technique were combined to develop a rapid, simple and sensitive method for determination of seven essential amino acids (valine, leucine, phenylalanine, methionine, tryptophan, threonine and lysine). Eventually, the developed method was successfully applied to the analysis of real samples with good reproducibility and reliability. This novel and simple method, based on the photochemical reactions occurring in the detection window and coupling with online preconcentration techniques, shows a great potential for the rapid and sensitive detection of low or non-UV absorbing compounds.
Collapse
Affiliation(s)
- Xia Xie
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, PR China
| | - Fengxia Chang
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, PR China
| | - Xin Li
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, PR China
| | - Meixian Li
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, PR China
| | - Zhiwei Zhu
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, PR China.
| |
Collapse
|
30
|
Gao J, Helmus R, Cerli C, Jansen B, Wang X, Kalbitz K. Robust analysis of underivatized free amino acids in soil by hydrophilic interaction liquid chromatography coupled with electrospray tandem mass spectrometry. J Chromatogr A 2016; 1449:78-88. [DOI: 10.1016/j.chroma.2016.04.071] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 03/24/2016] [Accepted: 04/25/2016] [Indexed: 12/14/2022]
|
31
|
Tsochatzis ED, Begou O, Gika HG, Karayannakidis PD, Kalogiannis S. A hydrophilic interaction chromatography-tandem mass spectrometry method for amino acid profiling in mussels. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1047:197-206. [PMID: 27265158 DOI: 10.1016/j.jchromb.2016.05.018] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 04/28/2016] [Accepted: 05/12/2016] [Indexed: 10/21/2022]
Abstract
A UHPLC-HILIC-tandem MS method has been developed and validated for the quantification of 21 amino acids (20 protein amino acids and cystine) in their free form (FAA) and as protein constituents (total amino acids, TAA) in a rich protein food matrix such as lyophilized mussels (Mytilus galloprovincialis) samples. FAA were analyzed after suspending the samples in the presence of trichloroacetic acid in order to prevent dissolving the proteins, while TAA were determined after acid hydrolysis with 6M HCl in the presence of 4% v/v thioglycolic acid as a reducing agent. In hydrolysed samples 17 amino acids could be determined since tryptophan, cysteine, cystine and asparagine were degraded during acid hydrolysis. Linear regression coefficients (R2) were above 0.99 for all amino acids. Accuracy and precision, expressed as recovery (%) and relative standard deviation (RSD, %) were in acceptable levels, ranging from 78.2 to 123.3% and below 15%, respectively for both FAA and TAA. Uncertainty was also below 12% for FAA and below 22% for TAA. Sensitivity of the method was high with LOD values ranging from 0.003 to 0.034g/100g for FAA and 0.001 to 0.004g/100g for TAA, while LOQ ranged from 0.009 to 0.104g/100g for FAA and 0.002 to 0.011g/100g for TAA. The method proved to be a fast and reliable tool for acquiring information on free and total amino acids profile in high protein content foodstuffs such as mussels.
Collapse
Affiliation(s)
- Emmanouil D Tsochatzis
- Aristotle University of Thessaloniki, Department of Chemical Engineering, 57124, Thessaloniki, Greece
| | - Olga Begou
- Aristotle University of Thessaloniki, Department of Chemistry, 57124, Thessaloniki, Greece
| | - Helen G Gika
- Aristotle University of Thessaloniki, Department of Chemical Engineering, 57124, Thessaloniki, Greece
| | - Panayotis D Karayannakidis
- Alexander Technological Educational Institution of Thessaloniki, Department of Food Technology, P.O. Box 141, GR-57400, Thessaloniki, Greece
| | - Stavros Kalogiannis
- Alexander Technological Educational Institution of Thessaloniki, Department of Nutrition and Dietetics, P.O. Box 141, GR-57400, Thessaloniki, Greece.
| |
Collapse
|
32
|
Ehling S, Reddy TM. Direct Analysis of Leucine and Its Metabolites β-Hydroxy-β-methylbutyric Acid, α-Ketoisocaproic Acid, and α-Hydroxyisocaproic Acid in Human Breast Milk by Liquid Chromatography-Mass Spectrometry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:7567-7573. [PMID: 26271627 DOI: 10.1021/acs.jafc.5b02563] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A direct, quantitative, and confirmatory method based on stable isotope dilution liquid chromatography-mass spectrometry was developed and validated for the analysis of leucine and metabolites β-hydroxy-β-methylbutyric acid (HMB), α-ketoisocaproic acid (KIC), and α-hydroxyisocaproic acid (HICA) in human breast milk. Chromatographic resolution was achieved between isobaric leucine and isoleucine. Accuracy and intermediate precision were 89-117% and <10% relative standard deviation (RSD) across three validation runs. Limits of quantitation for HMB, KIC, HICA, and leucine in human breast milk were 20 μg/L, 20 μg/L, 10 μg/L, and 1 mg/L. Measured concentrations of HMB, KIC, HICA, and free leucine in human breast milk from six donors at various stages of lactation were 42-164 μg/L, < 20-1057 μg/L, < 10 μg/L, and 2.1-88.5 mg/L. HMB and KIC were confirmed in human breast milk by orthogonal hydrophilic interaction chromatography (HILIC). This work provides a tool for further study of human breast milk composition and its effect on protein turnover in developing infants.
Collapse
Affiliation(s)
- Stefan Ehling
- Abbott Laboratories , 3300 Stelzer Road, Columbus, Ohio 43219, United States
| | - Todime M Reddy
- Abbott Laboratories , 3300 Stelzer Road, Columbus, Ohio 43219, United States
| |
Collapse
|
33
|
Senyuva HZ, Gökmen V, Sarikaya EA. Future perspectives in Orbitrap™-high-resolution mass spectrometry in food analysis: a review. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2015; 32:1568-606. [DOI: 10.1080/19440049.2015.1057240] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
34
|
Rapid and sensitive analysis of 27 underivatized free amino acids, dipeptides, and tripeptides in fruits of Siraitia grosvenorii Swingle using HILIC-UHPLC-QTRAP®/MS2 combined with chemometrics methods. Amino Acids 2015; 47:1589-603. [DOI: 10.1007/s00726-015-2002-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Accepted: 05/01/2015] [Indexed: 10/23/2022]
|
35
|
A Rapid and Accurate Extraction Procedure for Analysing Free Amino Acids in Meat Samples by GC-MS. Int J Anal Chem 2015; 2015:209214. [PMID: 25873963 PMCID: PMC4383232 DOI: 10.1155/2015/209214] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Revised: 01/12/2015] [Accepted: 01/20/2015] [Indexed: 11/17/2022] Open
Abstract
This study evaluated the use of a mixer mill as the homogenization tool for the extraction of free amino acids in meat samples, with the main goal of analyzing a large number of samples in the shortest time and minimizing sample amount and solvent volume. Ground samples (0.2 g) were mixed with 1.5 mL HCl 0.1 M and homogenized in the mixer mill. The final biphasic system was separated by centrifugation. The supernatant was deproteinized, derivatized and analyzed by gas chromatography. This procedure showed a high extracting ability, especially in samples with high free amino acid content (recovery = 88.73-104.94%). It also showed a low limit of detection and quantification (3.8 · 10(-4)-6.6 · 10(-4) μg μL(-1) and 1.3 · 10(-3)-2.2 · 10(-2) μg μL(-1), resp.) for most amino acids, an adequate precision (2.15-20.15% for run-to-run), and a linear response for all amino acids (R (2) = 0.741-0.998) in the range of 1-100 µg mL(-1). Moreover, it takes less time and requires lower amount of sample and solvent than conventional techniques. Thus, this is a cost and time efficient tool for homogenizing in the extraction procedure of free amino acids from meat samples, being an adequate option for routine analysis.
Collapse
|
36
|
Li X, Fan P, Zang M, Xing J. Rapid determination of oligopeptides and amino acids in soybean protein hydrolysates using high-resolution mass spectrometry. PHYTOCHEMICAL ANALYSIS : PCA 2015; 26:15-22. [PMID: 25043352 DOI: 10.1002/pca.2531] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Revised: 06/02/2014] [Accepted: 06/02/2014] [Indexed: 06/03/2023]
Abstract
INTRODUCTION Soybean protein hydrolysates (SPHs), especially oligopeptides, have shown a variety of functional properties, including immunomodulatory and anti-oxidant effects. Soybean protein hydrolysate products have been used as functional ingredients in food, sports nutrition or clinical nutrition. However, the mixture is mostly undefined due to its complex nature, containing peptides and minor amino acids as well as small proteins. OBJECTIVES To develop a specific and efficient method for the identification and structural characterisation of oligopeptides in SPHs, and to determine free amino acids in SPHs in the same analytical run, for evaluation of the chemical profile of SPH products. METHODS Accurate mass spectrometry (MS) datasets of SPH samples were recorded on a high-performance liquid chromatography (HPLC) tandem high-resolution (HR) MS system. Potential oligopeptides were tentatively characterised based on their elemental compositions and ring double bond equivalent (RDBE) values, as well as HRMS/MS data. The analytical method to determine amino acids was evaluated in terms of linearity, precision, apparent recovery and limits of detection and quantitation. RESULTS In total, 186 oligopeptides spanning the mass range of m/z 200-1500 and three major free amino acids could be determined in SPH samples in a single sample injection. Ninety-nine oligopeptides were tentatively characterised. The sensitive and specific instrumental performances also permitted the determination of 19 amino acids with a limit of quantitation of ≤ 0.1 μg/mL. CONCLUSION The HPLC-HRMS technique has proven to be an advantageous tool for the rapid characterisation of oligopeptides and determination of amino acids in soybean protein hydrolysates.
Collapse
Affiliation(s)
- Xinxiu Li
- School of Pharmaceutical Sciences, Shandong University, Jinan, China
| | | | | | | |
Collapse
|
37
|
Simultaneous quantification of amino acids and Amadori products in foods through ion-pairing liquid chromatography–high-resolution mass spectrometry. Amino Acids 2014; 47:111-24. [DOI: 10.1007/s00726-014-1845-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Accepted: 09/20/2014] [Indexed: 01/02/2023]
|
38
|
Marseglia A, Palla G, Caligiani A. Presence and variation of γ-aminobutyric acid and other free amino acids in cocoa beans from different geographical origins. Food Res Int 2014. [DOI: 10.1016/j.foodres.2014.05.026] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
|
39
|
Koklamaz E, Palazoğlu TK, Kocadağlı T, Gökmen V. Effect of combining conventional frying with radio-frequency post-drying on acrylamide level and quality attributes of potato chips. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2014; 94:2002-2008. [PMID: 24307258 DOI: 10.1002/jsfa.6516] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Revised: 11/25/2013] [Accepted: 12/04/2013] [Indexed: 06/02/2023]
Abstract
BACKGROUND In conventional manufacturing of potato chips, achieving an extremely low moisture content (2% by weight) in the final product necessitates prolonged exposure of potato slices to high oil temperatures. This promotes acrylamide formation and causes an exponential increase in acrylamide level toward the end of the frying process. In this regard, frying potato slices partially in hot oil followed by a radio-frequency (RF) drying treatment to selectively heat the remaining moisture appears to be a viable approach in terms of limiting acrylamide formation. RESULTS RF post-drying of partially fried potato slices resulted in lower acrylamide levels (80.4 ng g(-1) for control, 59.4 ng g(-1) for RF post-dried potato slices partially fried for 95 s, 54.8 ng g(-1) for RF post-dried potato slices partially fried for 80 s). This process modification also led a to 12% reduction in oil content in the final product. According to instrumental analysis results, RF post-dried samples had lower hardness and a slightly lower degree of browning in comparison to control. No significant difference (α = 0.05) was found between samples in terms of sensory characteristics. CONCLUSION Results demonstrate that RF post-processing may be an effective strategy for minimising acrylamide levels of potato chips without adversely affecting quality attributes.
Collapse
Affiliation(s)
- Esra Koklamaz
- Department of Food Engineering, Mersin University, 33343, Ciftlikkoy, Mersin, Turkey
| | | | | | | |
Collapse
|
40
|
Van Der Fels-Klerx H, Capuano E, Nguyen H, Ataç Mogol B, Kocadağlı T, Göncüoğlu Taş N, Hamzalıoğlu A, Van Boekel M, Gökmen V. Acrylamide and 5-hydroxymethylfurfural formation during baking of biscuits: NaCl and temperature–time profile effects and kinetics. Food Res Int 2014. [DOI: 10.1016/j.foodres.2014.01.039] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
41
|
Periche A, Koutsidis G, Escriche I. Composition of antioxidants and amino acids in Stevia leaf infusions. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2014; 69:1-7. [PMID: 24293005 DOI: 10.1007/s11130-013-0398-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Stevia, a non-caloric natural sweetener with beneficial properties and considerable antioxidants and amino acids, is increasingly consumed as an infusion. This work evaluates the influence of the conditions (temperature: 50, 70 or 90 °C and time: 1, 5, 20 or 40 min) applied to obtain Stevia infusions, on antioxidants (total phenols, flavonoids and antioxidant activity) and amino acids. The total concentration of the eleven amino acids found was 11.70 mg/g in dried leaves and from 6.84 to 9.11 mg/g per gram of Stevia in infusions. However, infusions showed higher levels of certain amino acids (alanine, asparagine, leucine and proline), and greater values of the three antioxidant parameters in comparison with dry leaves. Temperature had more influence (minimum values at 50 °C and maximum at 90 °C) than time in the case of antioxidants. At 90 °C there were no important increases in the extraction of antioxidant compounds after 5 min; each gram of Stevia had 117 mg trolox (total antioxidant activity), 90 mg gallic acid (total phenols) and 56 mg catechin equivalents (flavonoids). Varying the temperature and time conditions no notable differences were observed in the concentrations of the majority of amino acids. However, the infusion treatment at 90 °C for 5 min was the best, as it gave the highest yield of 8 of the 11 amino acids. Therefore, with respect to the compounds analyzed in this study, the best way to obtain Stevia leaf infusions is the same as the domestic process, almost boiling water for a short time.
Collapse
Affiliation(s)
- Angela Periche
- Institute of Food Engineering for Development, Food Technology Department, Universitat Politècnica de València, P.O.Box:46022, Valencia, Spain
| | | | | |
Collapse
|
42
|
Zitka O, Heger Z, Kominkova M, Skalickova S, Krizkova S, Adam V, Kizek R. Preconcentration based on paramagnetic microparticles for the separation of sarcosine using hydrophilic interaction liquid chromatography coupled with coulometric detection. J Sep Sci 2014; 37:465-575. [DOI: 10.1002/jssc.201301188] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Revised: 12/16/2013] [Accepted: 12/18/2013] [Indexed: 12/26/2022]
Affiliation(s)
- Ondrej Zitka
- Department of Chemistry and Biochemistry; Faculty of Agronomy; Mendel University in Brno; Brno Czech Republic
- Central European Institute of Technology; Brno University of Technology; Brno Czech Republic
| | - Zbynek Heger
- Department of Chemistry and Biochemistry; Faculty of Agronomy; Mendel University in Brno; Brno Czech Republic
| | - Marketa Kominkova
- Department of Chemistry and Biochemistry; Faculty of Agronomy; Mendel University in Brno; Brno Czech Republic
| | - Sylvie Skalickova
- Department of Chemistry and Biochemistry; Faculty of Agronomy; Mendel University in Brno; Brno Czech Republic
| | - Sona Krizkova
- Department of Chemistry and Biochemistry; Faculty of Agronomy; Mendel University in Brno; Brno Czech Republic
- Central European Institute of Technology; Brno University of Technology; Brno Czech Republic
| | - Vojtech Adam
- Department of Chemistry and Biochemistry; Faculty of Agronomy; Mendel University in Brno; Brno Czech Republic
- Central European Institute of Technology; Brno University of Technology; Brno Czech Republic
| | - Rene Kizek
- Department of Chemistry and Biochemistry; Faculty of Agronomy; Mendel University in Brno; Brno Czech Republic
- Central European Institute of Technology; Brno University of Technology; Brno Czech Republic
| |
Collapse
|
43
|
Effects of infusion conditions and decaffeination on free amino acid profiles of green and black tea. Food Res Int 2013. [DOI: 10.1016/j.foodres.2012.10.010] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
44
|
Ozyurt C, Evran S, Telefoncu A. Development of a novel fluorescent protein construct by genetically fusing green fluorescent protein to the N-terminal of aspartate dehydrogenase. Biotechnol Appl Biochem 2013; 60:399-404. [PMID: 24033594 DOI: 10.1002/bab.1107] [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: 10/16/2012] [Accepted: 02/06/2013] [Indexed: 11/11/2022]
Abstract
We developed a fluorescent protein construct by genetically fusing green fluorescent protein (GFP) to aspartate dehydrogenase from Thermotoga maritima. The fusion protein was cloned, heterologously expressed in Escherichia coli cells, and purified by Ni-chelate affinity chromatography. It was then introduced into a measurement cuvette to monitor its fluorescence signal. Aspartate dehydrogenase functioned as the biorecognition element, and aspartate-induced conformational change was converted to a fluorescence signal by GFP. The recombinant protein responded to l-aspartate (l-Asp) linearly within the concentration range of 1-50 mM, and it was capable of giving a fluorescence signal in 1 Min. Although a linear response was also observed for l-Glu, the fluorescence signal was 2.7 times lower than that observed for l-Asp. In the present study, we describe two novelties: development of a genetically encoded fluorescent protein construct for monitoring of l-Asp in vitro, and employment of aspartate dehydrogenase scaffold as a biorecognition element. A few genetically encoded amino-acid biosensors have been described in the literature, but to our knowledge, a protein has not been constructed solely for determination of l-Asp. Periplasmic ligand binding proteins offer high binding affinity in the micromolar range, and they are frequently used as biorecognition elements. Instead of choosing a periplasmic l-Asp binding protein, we attempted to use the substrate specificity of aspartate dehydrogenase enzyme.
Collapse
Affiliation(s)
- Canan Ozyurt
- Department of Biochemistry, Faculty of Science, Ege University, Izmir, Turkey
| | | | | |
Collapse
|
45
|
Post-column labeling techniques in amino acid analysis by liquid chromatography. Anal Bioanal Chem 2013; 405:7957-92. [DOI: 10.1007/s00216-013-7127-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2013] [Revised: 06/04/2013] [Accepted: 06/06/2013] [Indexed: 10/26/2022]
|
46
|
Pérez-Palacios T, Melo A, Cunha S, Ferreira IMPLVO. Determination of Free Amino Acids in Coated Foods by GC–MS: Optimization of the Extraction Procedure by Using Statistical Design. FOOD ANAL METHOD 2013. [DOI: 10.1007/s12161-013-9615-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
47
|
Guo S, Duan JA, Qian D, Tang Y, Qian Y, Wu D, Su S, Shang E. Rapid determination of amino acids in fruits of Ziziphus jujuba by hydrophilic interaction ultra-high-performance liquid chromatography coupled with triple-quadrupole mass spectrometry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:2709-19. [PMID: 23413770 DOI: 10.1021/jf305497r] [Citation(s) in RCA: 90] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
In this study, a sensitive and rapid method for the simultaneous determination of free amino acids without derivatization using hydrophilic interaction liquid chromatography coupled with tandem mass spectrometry (HILIC-MS/MS) was developed. The method was performed on an ultra-high-performance liquid chromatography (UHPLC) separation system coupled with a triple-quadrupole mass spectrometry (TQ-MS) instrument. Sufficient separation of 23 underivatized amino acids was achieved on an Acquity BEH Amide column (2.1 mm × 100 mm, 1.7 μm) in a single run of 12 min. Then the method was applied for the analysis of the free amino acids in 46 batches of Ziziphus jujuba fruits which comprised 39 cultivars from 26 cultivation regions. Multivariate statistical analysis was also used to investigate the differences in free amino acid profiles among the samples. This study showed that HILIC-UHPLC-TQ-MS is an effective technique to analyze underivatized amino acids in the food samples.
Collapse
Affiliation(s)
- Sheng Guo
- Jiangsu Key Laboratory for High Technology Research of TCM Formulae and ‡Research Center of Basic Medical College, Nanjing University of Chinese Medicine , Nanjing 210046, People's Republic of China
| | | | | | | | | | | | | | | |
Collapse
|
48
|
Karademir Y, Göncüoğlu N, Gökmen V. Investigation of heat induced reactions between lipid oxidation products and amino acids in lipid rich model systems and hazelnuts. Food Funct 2013; 4:1061-6. [DOI: 10.1039/c3fo30364k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
49
|
Alasalvar C, Topal B, Serpen A, Bahar B, Pelvan E, Gökmen V. Flavor characteristics of seven grades of black tea produced in Turkey. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:6323-6332. [PMID: 22642545 DOI: 10.1021/jf301498p] [Citation(s) in RCA: 119] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Seven grades of black tea [high-quality black tea (grades 1-3) and low-quality black tea (grades 4-7)], processed by ÇAYKUR Tea Processing Plant (Rize, Turkey), were compared for their differences in descriptive sensory analysis (DSA), aroma-active compounds (volatile compounds), and taste-active compounds (sugar, organic acid, and free amino acid compositions). Ten flavor attributes such as 'after taste', 'astringency', 'bitter', 'caramel-like', 'floral/sweet', 'green/grassy', 'hay-like', 'malty', 'roasty', and 'seaweed' were identified. Intensities for a number of flavor attributes ('after taste', 'caramel-like', 'malty', and 'seaweed') were not significantly different (p > 0.05) among seven grades of black tea. A total of 57 compounds in seven grades of black tea (14 aldehydes, eight alcohols, eight ketones, two esters, four aromatic hydrocarbons, five aliphatic hydrocarbons, nine terpenes, two pyrazines, one furan, two acids, and two miscellaneous compounds) were tentatively identified. Of these, aldeyhdes comprised more than 50% to the total volatile compounds identified. In general, high-grade quality tea had more volatiles than low-grade quality tea. With respect to taste-active compounds, five sugars, six organic acids, and 18 free amino acids were positively identified in seven grades of black tea, of which fructose, tannic acid, and theanine predominated, respectively. Some variations (p < 0.05), albeit to different extents, were observed among volatile compounds, sugars, organic acids, and free amino acids in seven grades of black tea. The present study suggests that a certain flavor attributes correlate well with taste- and aroma-active compounds. High- and low-quality black teas should not be distinguished solely on the basis of their DSA and taste- and aroma-active compounds. The combination of taste-active compounds together with aroma-active compounds renders combination effects that provide the characteristic flavor of each grade of black tea.
Collapse
Affiliation(s)
- Cesarettin Alasalvar
- TÜBİTAK Marmara Research Center, Food Institute , P.O. Box 21, 41470 Gebze-Kocaeli, Turkey.
| | | | | | | | | | | |
Collapse
|