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Burgeon C, Markey A, Debliquy M, Lahem D, Rodriguez J, Ly A, Fauconnier ML. Comprehensive SPME-GC-MS Analysis of VOC Profiles Obtained Following High-Temperature Heating of Pork Back Fat with Varying Boar Taint Intensities. Foods 2021; 10:foods10061311. [PMID: 34200407 PMCID: PMC8227496 DOI: 10.3390/foods10061311] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 06/01/2021] [Indexed: 11/16/2022] Open
Abstract
Boar taint detection is a major concern for the pork industry. Currently, this taint is mainly detected through a sensory evaluation. However, little is known about the entire volatile organic compounds (VOCs) profile perceived by the assessor. Additionally, many research groups are working on the development of new rapid and reliable detection methods, which include the VOCs sensor-based methods. The latter are susceptible to sensor poisoning by interfering molecules produced during high-temperature heating of fat. Analyzing the VOC profiles obtained by solid phase microextraction gas chromatography–mass spectrometry (SPME-GC-MS) after incubation at 150 and 180 °C helps in the comprehension of the environment in which boar taint is perceived. Many similarities were observed between these temperatures; both profiles were rich in carboxylic acids and aldehydes. Through a principal component analysis (PCA) and analyses of variance (ANOVAs), differences were highlighted. Aldehydes such as (E,E)-nona-2,4-dienal exhibited higher concentrations at 150 °C, while heating at 180 °C resulted in significantly higher concentrations in fatty acids, several amide derivatives, and squalene. These differences stress the need for standardized parameters for sensory evaluation. Lastly, skatole and androstenone, the main compounds involved in boar taint, were perceived in the headspace at these temperatures but remained low (below 1 ppm). Higher temperature should be investigated to increase headspace concentrations provided that rigorous analyses of total VOC profiles are performed.
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Affiliation(s)
- Clément Burgeon
- Laboratory of Chemistry of Natural Molecules, Gembloux Agro-Bio Tech, Université de Liège, Passage des Déportés 2, 5030 Gembloux, Belgium; (A.M.); (M.-L.F.)
- Correspondence:
| | - Alice Markey
- Laboratory of Chemistry of Natural Molecules, Gembloux Agro-Bio Tech, Université de Liège, Passage des Déportés 2, 5030 Gembloux, Belgium; (A.M.); (M.-L.F.)
| | - Marc Debliquy
- Service de Science des Matériaux, Faculté Polytechnique, Université de Mons, Rue de l’Epargne 56, 7000 Mons, Belgium; (M.D.); (J.R.)
| | - Driss Lahem
- Materia Nova ASBL, Materials R&D Centre, Parc Initialis, Avenue Nicolas Copernic 3, 7000 Mons, Belgium; (D.L.); (A.L.)
| | - Justine Rodriguez
- Service de Science des Matériaux, Faculté Polytechnique, Université de Mons, Rue de l’Epargne 56, 7000 Mons, Belgium; (M.D.); (J.R.)
| | - Ahmadou Ly
- Materia Nova ASBL, Materials R&D Centre, Parc Initialis, Avenue Nicolas Copernic 3, 7000 Mons, Belgium; (D.L.); (A.L.)
| | - Marie-Laure Fauconnier
- Laboratory of Chemistry of Natural Molecules, Gembloux Agro-Bio Tech, Université de Liège, Passage des Déportés 2, 5030 Gembloux, Belgium; (A.M.); (M.-L.F.)
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Lund BW, Borggaard C, Birkler RID, Jensen K, Støier S. High throughput method for quantifying androstenone and skatole in adipose tissue from uncastrated male pigs by laser diode thermal desorption-tandem mass spectrometry. FOOD CHEMISTRY-X 2021; 9:100113. [PMID: 33511339 PMCID: PMC7817497 DOI: 10.1016/j.fochx.2021.100113] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 11/11/2020] [Accepted: 11/20/2020] [Indexed: 11/30/2022]
Abstract
Boar taint is mainly caused by the compounds, skatole and androstenone. Analysis for at-line industrial measurement of boar taint in pigs. High throughput quantitative analysis of skatole and androstenone. Low cost, robust and selective analytical results.
The study aims at developing a rapid and robust mass spectrometric method capable of measuring the malodorous boar taint compounds androstenone and skatole in fat samples from male pig carcasses. The developed method is suited for use in commercial abattoirs as an at-line method to detect the presence of these compounds in carcasses or as a high-speed analysis in laboratories with high sample turnover. The chemical assay is based on salt-assisted liquid-liquid extraction and direct measurement with Laser Diode Thermal Desorption-Tandem Mass Spectrometry (LDTD-MS/MS). When fully automated as an at-line method, a single LDTD-MS/MS system will have a measuring capacity of >420 male pig carcasses per hour. The limit of quantification (LOQ) is 0.05 µg/g and 0.10 µg/g for skatole and androstenone, respectively, which is well below the expected sorting thresholds. The reproducibility of the method (%RSD) meets the industry requirement for an RSD of below 10%.
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Affiliation(s)
- Birgitte Winther Lund
- Danish Technological Institute, Danish Meat Research Institute (DMRI), Gregersensvej 9, 2630 Taastrup, Denmark
| | - Claus Borggaard
- Danish Technological Institute, Danish Meat Research Institute (DMRI), Gregersensvej 9, 2630 Taastrup, Denmark
| | - Rune Isak Dupont Birkler
- Danish Technological Institute, Danish Meat Research Institute (DMRI), Gregersensvej 9, 2630 Taastrup, Denmark
| | - Kirsten Jensen
- Danish Technological Institute, Danish Meat Research Institute (DMRI), Gregersensvej 9, 2630 Taastrup, Denmark
| | - Susanne Støier
- Danish Technological Institute, Danish Meat Research Institute (DMRI), Gregersensvej 9, 2630 Taastrup, Denmark
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Bueno M, Resconi VC, Campo MM, Ferreira V, Escudero A. Development of a robust HS-SPME-GC-MS method for the analysis of solid food samples. Analysis of volatile compounds in fresh raw beef of differing lipid oxidation degrees. Food Chem 2019; 281:49-56. [DOI: 10.1016/j.foodchem.2018.12.082] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 12/10/2018] [Accepted: 12/15/2018] [Indexed: 12/15/2022]
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Xie Y, He Z, Zhang E, Li H. Technical note: Characterization of key volatile odorants in rabbit meat using gas chromatography mass spectrometry with simultaneous distillation extraction. WORLD RABBIT SCIENCE 2016. [DOI: 10.4995/wrs.2016.4464] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
<p>This study explored the key volatile compounds in both male and female rabbit meat. Simultaneous distillation extraction with dichloromethane was adopted to extract the volatile compounds in Hyla rabbit meat. A total of 35 volatile compounds were identified by gas chromatography–mass spectrometry and quantified with 2, 4, 6-thimethylpyridine as internal standard. Seventeen volatile aldehydes, 4 alcohols, 2 ketones, 2 acids, 1 heterocyclic compound, 2 alkanes and 7 esters were detected. Hexanal, heptanal, octanal, nonanal, (E, E)-2, 4-decadienal, 1-octen-3-ol and (Z)-2-decenal were the key odorant compounds, with high relative odour activity value. Furthermore, the concentration of volatile compounds in male rabbit meat was higher than that in female rabbit meat.</p>
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Verplanken K, Wauters J, Van Durme J, Claus D, Vercammen J, De Saeger S, Vanhaecke L. Rapid method for the simultaneous detection of boar taint compounds by means of solid phase microextraction coupled to gas chromatography/mass spectrometry. J Chromatogr A 2016; 1462:124-33. [DOI: 10.1016/j.chroma.2016.07.077] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2016] [Revised: 07/12/2016] [Accepted: 07/27/2016] [Indexed: 11/29/2022]
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Sørensen KM, Westley C, Goodacre R, Engelsen SB. Simultaneous quantification of the boar-taint compounds skatole and androstenone by surface-enhanced Raman scattering (SERS) and multivariate data analysis. Anal Bioanal Chem 2015; 407:7787-95. [DOI: 10.1007/s00216-015-8945-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 07/14/2015] [Accepted: 07/28/2015] [Indexed: 10/23/2022]
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Wauters J, Vanden Bussche J, Verplanken K, Bekaert KM, Aluwé M, Van den Broeke A, Coussé A, Buys N, Vanhaecke L. Development of a quantitative method for the simultaneous analysis of the boar taint compounds androstenone, skatole and indole in porcine serum and plasma by means of ultra-high performance liquid chromatography coupled to high resolution mass spectrometry. Food Chem 2015; 187:120-9. [PMID: 25977006 DOI: 10.1016/j.foodchem.2015.04.066] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Revised: 11/18/2014] [Accepted: 04/07/2015] [Indexed: 12/28/2022]
Abstract
Boar taint is an off-odour occurring while heating meat or fat from boars. A method detecting the three compounds (androstenone, skatole and indole) simultaneously in blood would offer substantial advantages since it would allow monitoring the impact of rearing strategies. Therefore, a UHPLC-HR-Orbitrap-MS analysis method is optimized and validated for the quantification of these compounds in plasma or serum. Sample pre-treatment involved an extraction with diethylether followed by a centrifugal filtration (30 kDa). Limits of detection and quantification varied between 0.5 and 1 μg L(-1) and 2 and 3 μg L(-1) for the three compounds, respectively. Besides, an excellent repeatability (RSD < 7.6%), within-laboratory reproducibility (RSD<10.5%), recovery (87-97%) and linearity (R(2)>0.99) were recorded. Correlations between serum/plasma and fat levels of the boar taint compounds were positive for skatole (r(serum) = 0.39 and r(plasma) = 0.84) and androstenone (r(serum) = 0.73-0.78 and r(plasma) = 0.32-0.80).
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Affiliation(s)
- J Wauters
- Ghent University, Faculty of Veterinary Medicine, Department of Veterinary Public Health and Food Safety, Laboratory of Chemical Analysis, Salisburylaan 133, B-9820 Merelbeke, Belgium.
| | - J Vanden Bussche
- Ghent University, Faculty of Veterinary Medicine, Department of Veterinary Public Health and Food Safety, Laboratory of Chemical Analysis, Salisburylaan 133, B-9820 Merelbeke, Belgium.
| | - K Verplanken
- Ghent University, Faculty of Veterinary Medicine, Department of Veterinary Public Health and Food Safety, Laboratory of Chemical Analysis, Salisburylaan 133, B-9820 Merelbeke, Belgium.
| | - K M Bekaert
- Ghent University, Faculty of Veterinary Medicine, Department of Veterinary Public Health and Food Safety, Laboratory of Chemical Analysis, Salisburylaan 133, B-9820 Merelbeke, Belgium.
| | - M Aluwé
- Institute of Agricultural and Fisheries Research (ILVO), Animal Sciences Unit, Scheldeweg 68, B-9090 Melle, Belgium.
| | - A Van den Broeke
- Institute of Agricultural and Fisheries Research (ILVO), Animal Sciences Unit, Scheldeweg 68, B-9090 Melle, Belgium.
| | - A Coussé
- KU Leuven University, Science, Engineering and Technology Group, Department of Biosystems (BIOSYST), Division of Gene Technology, Kasteelpark Arenberg 21, B-3001 Heverlee, Belgium.
| | - N Buys
- KU Leuven University, Science, Engineering and Technology Group, Department of Biosystems (BIOSYST), Division of Gene Technology, Kasteelpark Arenberg 21, B-3001 Heverlee, Belgium.
| | - L Vanhaecke
- Ghent University, Faculty of Veterinary Medicine, Department of Veterinary Public Health and Food Safety, Laboratory of Chemical Analysis, Salisburylaan 133, B-9820 Merelbeke, Belgium.
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Zheng W, Jiang Z, Zhang L, Zhang C, Zhang X, Fei C, Zhang K, Wang X, Wang M, Li T, Xiao S, Wang C, Xue F. Simultaneous determination of toltrazuril and its metabolites in chicken and pig skin+fat by UPLC-UV method. J Chromatogr B Analyt Technol Biomed Life Sci 2014; 972:89-94. [DOI: 10.1016/j.jchromb.2014.09.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Revised: 09/04/2014] [Accepted: 09/21/2014] [Indexed: 12/01/2022]
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Han X, Gu L, Xia C, Feng J, Cao X, Du X, Zeng X, Song T. Effect of immunization against GnRH on hypothalamic and testicular function in rams. Theriogenology 2014; 83:642-9. [PMID: 25433833 DOI: 10.1016/j.theriogenology.2014.10.029] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2014] [Revised: 10/29/2014] [Accepted: 10/29/2014] [Indexed: 11/15/2022]
Abstract
The objective was to determine effects of active immunization against GnRH on reproductive function in Tibetan rams. Peripubertal Tibetan rams (n = 30) were randomly and equally allocated into three groups: control (no treatment); surgically castrated; or immunized against 100-μg d-Lys6-GnRH-tandem-dimer peptide conjugated to ovalbumin in Specol adjuvant at 24 weeks of age (with a booster 8 weeks later). Blood samples (for antibody titers and hormone concentrations) were collected at 4-week intervals until rams were killed (40 weeks). Immunization triggered a good antibody response in all immunized rams (P < 0.01). Compared with intact controls, anti-GnRH immunization reduced (P < 0.01) serum concentrations of testosterone, inhibin A, LH, and FSH, and it induced testicular atrophy (suppression of spermatogenesis). Androstenone concentrations in fat tissues of GnRH-immunized rams were also rendered nondetectable (P < 0.001). Furthermore, mRNA expressions of GnRH receptor, LH-β, and FSH-β in the pituitary and of LH receptor, FSH receptor, and inhibin α and βA subunits in the testes were decreased in immunized rams compared with intact controls (P < 0.05). This was apparently the first report that active immunization against GnRH-tandem-dimer-ovalbumin conjugate in Specol adjuvant was an effective alternative to surgical castration for Tibetan rams under practical Tibetan plateau conditions.
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Affiliation(s)
- Xingfa Han
- Isotope Research Lab, Sichuan Agricultural University, Ya'an, P.R. China
| | - Longjun Gu
- Isotope Research Lab, Sichuan Agricultural University, Ya'an, P.R. China
| | - Chenyang Xia
- Institute of Animal Science, Tibet Academy of Agricultural and Animal Husbandry Science, Lhasa, P.R. China
| | - Jing Feng
- Institute of Animal Science, Tibet Academy of Agricultural and Animal Husbandry Science, Lhasa, P.R. China
| | - Xiaohan Cao
- Isotope Research Lab, Sichuan Agricultural University, Ya'an, P.R. China
| | - Xiaogang Du
- Isotope Research Lab, Sichuan Agricultural University, Ya'an, P.R. China
| | - Xianyin Zeng
- Isotope Research Lab, Sichuan Agricultural University, Ya'an, P.R. China.
| | - Tianzeng Song
- Institute of Animal Science, Tibet Academy of Agricultural and Animal Husbandry Science, Lhasa, P.R. China.
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Sørensen KM, Engelsen SB. Measurement of boar taint in porcine fat using a high-throughput gas chromatography-mass spectrometry protocol. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:9420-9427. [PMID: 25230360 DOI: 10.1021/jf5022785] [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] [Indexed: 06/03/2023]
Abstract
This work outlines an optimized gas chromatrography-mass spectrometry (GC-MS) based protocol for screening of the presence of the three boar-taint-producing compounds indole, skatole (3-methylindole), and androstenone (5α-androst-16-en-3-one) in porcine fat. The study shows that an accuracy suitable for sample screening can be achieved even when speed and ease of sample handling is prioritized and without the use of internal standards. The method provides levels of detection of 82 ng/g for indole, 97 ng/g for skatole, and 623 ng/g for androstenone (in a 2 g natural backfat matrix). A least-squares approach of predicting the sample analyte mass from instrument response is shown to have prediction errors (root-mean-square error) of 96 ng/g for indole, 94 ng/g for skatole, and 331.3 ng/g for androstenone. The method is intended for discrimination of samples in risk groups, and a scheme is proposed to turn the GC-MS response of the boar-taint analytes into risk classes.
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Affiliation(s)
- Klavs M Sørensen
- Faculty of Science, Department of Food Science, Spectroscopy & Chemometrics, University of Copenhagen , Rolighedsvej 26, DK-1858 Frederiksberg C, Denmark
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