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Peñaranda I, Egea M, Linares MB, López MB, Garrido MD. Marinade injection of pork as a possible technological strategy to reduce boar taint: Response and attitude of the consumer. Meat Sci 2024; 212:109462. [PMID: 38402647 DOI: 10.1016/j.meatsci.2024.109462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 02/14/2024] [Accepted: 02/18/2024] [Indexed: 02/27/2024]
Abstract
Sensory evaluation by consumers allows validation of a solution for the food industry to overcome boar taint and market entire male pork with high levels of boar taint considered "unfit for human consumption". One possible technological strategy for improvement is the injection marination of entire male pork to help minimise the impact of boar taint and improve its marketability. The responses of 120 regular pork consumers, to entire males with high levels of boar taint and castrated pork, both injection-marinated, were evaluated. The results showed a similar response between entire and castrated male pork regardless of sex, and the detection of unpleasant odours and flavours (as farm/animal), thus offering a new alternative to the pork sector to mask the boar taint and revalue this pork. However, it was observed that consumer information on castration and animal welfare of entire male pork is scarce, and it is important to increase their knowledge so that they can place a value on this technological strategy with entire male pork and thus increase their purchase intention.
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Affiliation(s)
- Irene Peñaranda
- Department of Food Science and Technology, Veterinary Faculty, University of Murcia, Espinardo, 30100 Murcia, Spain
| | - Macarena Egea
- Department of Food Science and Technology, Veterinary Faculty, University of Murcia, Espinardo, 30100 Murcia, Spain
| | - M Belén Linares
- Department of Food Science and Technology, Veterinary Faculty, University of Murcia, Espinardo, 30100 Murcia, Spain
| | - M Belén López
- Department of Food Science and Technology, Veterinary Faculty, University of Murcia, Espinardo, 30100 Murcia, Spain
| | - M Dolores Garrido
- Department of Food Science and Technology, Veterinary Faculty, University of Murcia, Espinardo, 30100 Murcia, Spain.
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2
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Aluwé M, Heyrman E, Kostyra E, Żakowska-Biemans S, Almeida J, Citek J, Font-I-Furnols M, Moreira O, Zadinová K, Tudoreanu L, Lin-Schistra L, Van den Broeke A. Consumer evaluation of meat quality from barrows, immunocastrates and boars in six countries. Animal 2022; 16:100455. [PMID: 35183012 DOI: 10.1016/j.animal.2022.100455] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 12/26/2021] [Accepted: 01/04/2022] [Indexed: 11/25/2022] Open
Abstract
The practice of surgical castration of piglets and its alternatives is still under debate. Production of boars may impair meat quality due to boar taint and reduced tenderness compared to meat from surgically castrated male pigs, while immunocastration reduces boar taint and may improve meat quality but seems to be less accepted by the pig chain. In this study, we aimed to evaluate the consumer's sensory appreciation of meat from barrows (BAs), immunocastrates (ICs) and boars (BOs) in six European countries, taking into account the selection of tainted carcass and consumers' appreciation of boar taint. Loin chops of 30 BAs, 30 ICs and 30 BOs were evaluated by 752 consumers in six countries: Belgium, Czech Republic, Poland, Portugal, Romania and Spain. Consumers rated odour, flavour, tenderness, juiciness, overall liking and willingness to buy and sensitivity to and liking of androstenone (AND) and liking of skatole (SKA) was also tested. In each of the six countries, consumers liked the odour of the BO samples less than that of BA, and IC intermediate. For flavour, tenderness, juiciness, overall liking and willingness to buy, liking scores given by the Czech, Polish and Portuguese consumers significantly differed between the BA, BO and IC. Willingness to buy was highest for BA by Czech and Polish consumers and for BA and IC by Portuguese consumers. The frequency of the negative check all terms that apply terms also differed, with a higher frequency of disgusting for BO compared to BA and IC and of off-flavour, irritating, manure, sweat, disappointing compared to BA, and intermediate for IC. 31% of the consumers disliked the odour of AND (NEGAND), and 36% of them were not sensitive; in contrast, 77% of the consumers disliked SKA (NEGSKA). The decrease in flavour liking score for BO compared to BA and IC was more outspoken by the NEGAND consumer, while NEGSKA consumers gave an overall lower liking score independent of the type of male pig. The results of this study indicate that IC can be a valid alternative for surgical castration.
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Affiliation(s)
- M Aluwé
- Flanders Research Institute for Agriculture, Fisheries and Food (ILVO), Animal Sciences Unit, 9090 Melle, Belgium.
| | - E Heyrman
- Flanders Research Institute for Agriculture, Fisheries and Food (ILVO), Animal Sciences Unit, 9090 Melle, Belgium
| | - E Kostyra
- Institute of Human Nutrition Sciences, Warsaw University of Life Sciences (WULS-SGGW), ul. Nowoursynowska 159c, 02-787 Warsaw, Poland
| | - S Żakowska-Biemans
- Institute of Human Nutrition Sciences, Warsaw University of Life Sciences (WULS-SGGW), ul. Nowoursynowska 159c, 02-787 Warsaw, Poland
| | - J Almeida
- Instituto Nacional de Investigação Agrária e Veterinária (INIAV), Quinta da Fonte Boa, 2005-048 Vale de Santarém, Portugal
| | - J Citek
- Department of Animal Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague (CZU), Kamycka 129, 16500 Prague, Czech Republic
| | - M Font-I-Furnols
- Institute of Agrifood Research and Technology (IRTA), Product Quality and Technology Program, Finca Camps I Armet, 17121 Monells, Girona, Spain
| | - O Moreira
- Instituto Nacional de Investigação Agrária e Veterinária (INIAV), Quinta da Fonte Boa, 2005-048 Vale de Santarém, Portugal
| | - K Zadinová
- Department of Animal Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague (CZU), Kamycka 129, 16500 Prague, Czech Republic
| | - L Tudoreanu
- Interdisciplinary Laboratory for Research on Heavy Metals Accumulation in the Food Chain and Modeling, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 011464 Bucharest, Romania
| | - L Lin-Schistra
- Marketing and Consumer Behaviour Group, Wageningen University, Hollandseweg 1, 6706 KN Wageningen, the Netherlands
| | - A Van den Broeke
- Flanders Research Institute for Agriculture, Fisheries and Food (ILVO), Animal Sciences Unit, 9090 Melle, Belgium
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Mignot C, Nahrath P, Sinding C, Hummel T. Older and Young Adults Experience Similar Long-Term Olfactory Habituation. Chem Senses 2020; 46:6043127. [PMID: 33347544 DOI: 10.1093/chemse/bjaa080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Olfactory habituation corresponds to a decreased behavioral or perceptual response to an odor after a prolonged exposure to this odor. Our aim was to investigate whether long-term olfactory habituation and its recovery are similar in young (<35 years old) and older adults (>50). Fifty-seven participants were recruited for a 5-week longitudinal study. They were exposed to one of the two odors (manzanate alpha [MA], irone alpha [IA]) for 2 weeks at home. Olfactory detection thresholds for both odors were measured before and after exposure. Results showed that the two age groups behaved similarly. The long-term exposure to an odor led to a temporary increase of its detection threshold (lower sensitivity to the odor). IA thresholds were more sensitive to the duration of exposure with the odor than MA thresholds. One week after termination of exposure, participants fully recovered and even became more sensitive to both odors. No cross-habituation was found between the two odors. Our findings highlight that long-term habituation is specific to the odor exposed, behaves the same in young and older adults, and is fully reversible in both age groups after 1 week.
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Affiliation(s)
- Coralie Mignot
- Smell and Taste Clinic, Department of Otorhinolaryngology, Technical University of Dresden, Fetscherstrasse, Dresden, Germany
| | - Philipp Nahrath
- Smell and Taste Clinic, Department of Otorhinolaryngology, Technical University of Dresden, Fetscherstrasse, Dresden, Germany
| | - Charlotte Sinding
- Department French National Institute for Agricultural Research, Centre des Sciences du Goût et de l'Alimentation (CSGA), Dijon, France
| | - Thomas Hummel
- Smell and Taste Clinic, Department of Otorhinolaryngology, Technical University of Dresden, Fetscherstrasse, Dresden, Germany
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Fitzwater E, Coppola DM. Olfactory Deprivation and Enrichment: An Identity of Opposites? Chem Senses 2020; 46:5939855. [PMID: 33103187 DOI: 10.1093/chemse/bjaa071] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The effects of deprivation and enrichment on the electroolfactogram of mice were studied through the paradigms of unilateral naris occlusion and odor induction, respectively. Deprivation was shown to cause an increase in electroolfactogram amplitudes after 7 days. We also show that unilateral naris occlusion is not detrimental to the gross anatomical appearance or electroolfactogram of either the ipsilateral or contralateral olfactory epithelium even after year-long survival periods, consistent with our previous assumptions. Turning to induction, the increase in olfactory responses after a period of odor enrichment, could not be shown in CD-1 outbred mice for any odorant tried. However, consistent with classical studies, it was evident in C57BL/6J inbred mice, which are initially insensitive to isovaleric acid. As is the case for deprivation, enriching C57BL/6J mice with isovaleric acid causes an increase in their electroolfactogram response to this odorant over time. In several experiments on C57BL/6J mice, the odorant specificity, onset timing, recovery timing, and magnitude of the induction effect were studied. Considered together, the current findings and previous work from the laboratory support the counterintuitive conclusion that both compensatory plasticity in response to deprivation and induction in response to odor enrichment are caused by the same underlying homeostatic mechanism, the purpose of which is to preserve sensory information flow no matter the odorant milieu. This hypothesis, the detailed evidence supporting it, and speculations concerning human odor induction are discussed.
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Affiliation(s)
- Emily Fitzwater
- Department of Biology, Randolph-Macon College, Ashland, VA, USA
| | - David M Coppola
- Department of Biology, Randolph-Macon College, Ashland, VA, USA
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Feasibility of on/at Line Methods to Determine Boar Taint and Boar Taint Compounds: An Overview. Animals (Basel) 2020; 10:ani10101886. [PMID: 33076492 PMCID: PMC7602555 DOI: 10.3390/ani10101886] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 09/21/2020] [Accepted: 10/09/2020] [Indexed: 01/26/2023] Open
Abstract
Simple Summary Due to welfare issues, the physical castration of male pigs is decreasing, and the entire male pig production is increasing. Fattening entire male pigs requires control due to the possibility of accumulating off odour/flavour called boar taint, which is mainly due to two compounds - skatole and androstenone. If carcasses with boar taint reach the market, it can cause a negative consumer reaction which may have economic consequences for the whole meat chain. Thus, it is necessary to sort out carcasses at the slaughter line. Today, a sensory quality control (human nose method) is used in some slaughter plants for this purpose. Detection by physical or chemical methods is also envisaged. A colorimetric method to determine skatole has been used in Danish abattoirs for decades, but it is foreseen that it will soon be replaced by the laser diode thermal desorption ion source coupled with a mass spectrometry equipment that allows a fully automated classification based on skatole and androstenone levels at speed line, with a delay of less than 40 min. Other potential methods such as the electrochemical biosensors, rapid evaporative ionization mass spectroscopy and Raman spectroscopy, still need further development and validation for an application at abattoir level. Abstract Classification of carcasses at the slaughter line allows an optimisation of its processing and differentiated payment to producers. Boar taint is a quality characteristic that is evaluated in some slaughter plants. This odour and flavour is mostly present in entire males and perceived generally by sensitive consumers as unpleasant. In the present work, the methodologies currently used in slaughter plants for boar taint classification (colorimetric method and sensory quality control-human nose) and the methodologies that have the potential to be implemented on/at the slaughter line (mass spectrometry, Raman and biosensors) have been summarized. Their main characteristics are presented and an analysis of strengths, weaknesses, opportunities and threats (SWOT) has been carried out. From this, we can conclude that, apart from human nose, the technology that arises as very promising and available on the market, and that will probably become a substitute for the colorimetric method, is the tandem between the laser diode thermal desorption ion source and the mass spectrometry (LDTD-MS/MS) with automation of the sampling and sample pre-treatment, because it is able to work at the slaughter line, is fast and robust, and measures both androstenone and skatole.
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6
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Developing and Understanding Olfactory Evaluation of Boar Taint. Animals (Basel) 2020; 10:ani10091684. [PMID: 32957708 PMCID: PMC7552758 DOI: 10.3390/ani10091684] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/04/2020] [Accepted: 09/11/2020] [Indexed: 11/23/2022] Open
Abstract
Simple Summary Boar taint is an unpleasant smell and taste of fat of uncastrated male pigs. Growing welfare concerns are pushing towards a ban on the common practice of castrating male piglets as a means to prevent boar taint. This pushes the pork industry to apply alternative strategies to prevent the consumption of tainted of meat. Detecting boar taint is an important aspect of solving this problem, both as a control strategy in slaughterhouses and in boar taint research. This study provides a training protocol and scoring method as well as recommendations for evaluating boar taint. Abstract Trained expert panels are used routinely in boar taint research, with varying protocols for training of panelists and scoring methods. We describe a standardized process for training and scoring, to contribute to standardize the olfactory detection of boar taint. Three experiments are described in which we (1) evaluate the importance of training and the effect of the previous sample, (2) determine detection thresholds on strips and in fat for our panel, and (3) test priming panelists before boar taint evaluation. For the final evaluation of boar taint, we propose a consistent three-person evaluation scoring on a 0–4 scale using a final mean score of 0.5 as the cut-off for boar taint. This gave an optimal sensitivity of 0.81 and a specificity of 0.56 compared to chemical cut-offs. Even limited training proved useful, but priming assessors with strips did not improve the evaluation of fat samples. Detection thresholds were higher in fat compared to strips, except for indole. We recommend panelists to always smell a non-tainted control sample after a tainted one as a ‘reset’ mechanism, before continuing. For longitudinal studies, we additionally advise to set up an expert panel with a fixed number of assessors performing each evaluation in duplicate.
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Buttinger G, Wenzl T. Validation by collaborative trial of a method for the determination by GC-MS and LC-MS/MS of boar taint marker compounds in pork tissue. FOOD CHEMISTRY-X 2020; 6:100083. [PMID: 32211608 PMCID: PMC7082526 DOI: 10.1016/j.fochx.2020.100083] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 08/12/2019] [Accepted: 03/01/2020] [Indexed: 11/17/2022]
Abstract
Simultaneous determination of indole, skatole, and androstenone in pork tissue. Sensorial thresholds are within working ranges of the method. Choice of sample measurement by GC–MS or LC–MSMS. Method validation by collaborative trial with participants from 10 countries. Method performance parameters are compliant with EU legislation on food contaminants.
Meat from male pigs may develop an off-flavour, commonly known as boar taint. Castration of male piglets prevents the potential formation of off-flavour. In the suggested method, three marker compounds for boar taint (skatole, androstenone and indole) are quantified in pork fat by isotope dilution gas chromatography mass spectrometry (GC–MS) or by isotope dilution liquid chromatography tandem mass spectrometry (LC–MS/MS). This method was validated by collaborative trial according to ISO 5725-2:1994. The studied concentration ranges included sensorial thresholds. The repeatability relative standard deviation (RSDr) ranges from 3% to 10% and the reproducibility relative standard deviation (RSDR) from 10% to about 30%. The method has proven to be robust and free from matrix interferences. The method performance characteristics are compliant with requirements for official control methods in the area of food contaminants; therefore, the method is regarded as fit for its intended purpose.
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Affiliation(s)
- Gerhard Buttinger
- European Commission, Joint Research Centre (JRC), Retieseweg 111, B 2440 Geel, Belgium
| | - Thomas Wenzl
- European Commission, Joint Research Centre (JRC), Retieseweg 111, B 2440 Geel, Belgium
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8
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Use of masking strategies to avoid the boar taint perception in chorizo: consumers' acceptability. Meat Sci 2020; 169:108223. [PMID: 32615485 DOI: 10.1016/j.meatsci.2020.108223] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 06/11/2020] [Accepted: 06/11/2020] [Indexed: 11/21/2022]
Abstract
The production of entire male pigs is an alternative to surgical castration. However, boar taint may be present in the meat of entire male animals. The aim of the present paper was to investigate the acceptability and sensory properties of chorizo, elaborated under three different levels of androstenone [castrated 0-0.3 mg / kg, medium 0.4-0.9 mg / kg and high 1-2.75 mg / kg] and two masking strategies [rosemary, and rosemary plus smoking] using a Check-All-That-Apply questionnaire. The results showed that, of the strategies employed, the rosemary plus smoked chorizo was the most effective masking strategy to reduce the boar taint in chorizos with high androstenone level (3.7% selection rate for animal flavour), while the closest to the ideal product, according to consumers' description, was high androstenone level plus rosemary chorizo.
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9
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Marin C, Laxe S, Langdon C, Alobid I, Berenguer J, Fuentes M, Bernabeu M, Mullol J. Olfactory Training Prevents Olfactory Dysfunction Induced by Bulbar Excitotoxic Lesions: Role of Neurogenesis and Dopaminergic Interneurons. Mol Neurobiol 2019; 56:8063-8075. [DOI: 10.1007/s12035-019-1639-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 05/06/2019] [Indexed: 02/06/2023]
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10
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Consumer acceptance of minced meat patties from boars in four European countries. Meat Sci 2017; 137:235-243. [PMID: 29223558 DOI: 10.1016/j.meatsci.2017.11.034] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 11/26/2017] [Accepted: 11/27/2017] [Indexed: 11/21/2022]
Abstract
A consumer study was performed in four EU countries to further clarify the acceptability of meat with boar taint. In Denmark, France, Italy and Poland, a total of 476 female consumers evaluated 8 meat patties from boars with varying levels of skatole (0.10-0.40μg/g fat tissue) and androstenone (0.47-2.00 μg/g fat tissue), in a pair-wise comparison with patties from castrates. Boar meat patties were always less preferred than the castrate meat patties, regardless of the level of androstenone and skatole. Acceptability of the boar meat patties decreased with increasing skatole level. In samples with low skatole levels, higher levels of androstenone also reduced acceptability among androstenone sensitive consumers. No clear threshold levels for androstenone and skatole could be identified. Maps presenting the reduction in preference due to increasing levels of skatole and androstenone, and corrected for the general acceptance of the meat product were developed, taking into account androstenone sensitivity. Further work is needed, covering the whole range of androstenone and skatole levels found in entire male pigs and for a wider set of meat products.
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11
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Abstract
Olfaction is often viewed as difficult, yet the empirical evidence suggests a different picture. A closer look shows people around the world differ in their ability to detect, discriminate, and name odors. This gives rise to the question of what influences our ability to smell. Instead of focusing on olfactory deficiencies, this review presents a positive perspective by focusing on factors that make someone a better smeller. We consider three driving forces in improving olfactory ability: one’s biological makeup, one’s experience, and the environment. For each factor, we consider aspects proposed to improve odor perception and critically examine the evidence; as well as introducing lesser discussed areas. In terms of biology, there are cases of neurodiversity, such as olfactory synesthesia, that serve to enhance olfactory ability. Our lifetime experience, be it typical development or unique training experience, can also modify the trajectory of olfaction. Finally, our odor environment, in terms of ambient odor or culinary traditions, can influence odor perception too. Rather than highlighting the weaknesses of olfaction, we emphasize routes to harnessing our olfactory potential.
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Affiliation(s)
- Asifa Majid
- Centre for Language Studies, Radboud University, Nijmegen, The Netherlands; Max Planck Institute for Psycholinguistics, Nijmegen, The Netherlands; Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, The Netherlands
| | - Laura Speed
- Centre for Language Studies, Radboud University, Nijmegen, The Netherlands
| | - Ilja Croijmans
- Centre for Language Studies, Radboud University, Nijmegen, The Netherlands; International Max Planck Research School for Language Sciences, Nijmegen, The Netherlands
| | - Artin Arshamian
- Centre for Language Studies, Radboud University, Nijmegen, The Netherlands; Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, The Netherlands; Division of Psychology, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
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12
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Jacob CC, Dervilly-Pinel G, Deceuninck Y, Gicquiau A, Chevillon P, Bonneau M, Le Bizec B. Urinary signature of pig carcasses with boar taint by liquid chromatography-high-resolution mass spectrometry. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2016; 34:218-227. [PMID: 27885948 DOI: 10.1080/19440049.2016.1265152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Boar taint is an offensive odour that can occur while cooking pork or pork products and is identified in some uncastrated male pigs that have reached puberty. It is widely held that boar taint is the result of the accumulation in back fat of two malodorous compounds: androstenone and skatole. The purpose of this study is to assess a mass spectrometry-based metabolomics strategy to investigate the metabolic profile of urine samples from pig carcasses presenting low (untainted) and high (tainted) levels of androstenone and skatole in back fat. Urine samples were analysed by LC-ESI(+)-HRMS. Discrimination between tainted and untainted animals was observed by the application of multivariate statistical analysis, which allowed candidate urinary biomarkers to be highlighted. These urinary metabolites were positively correlated to androstenone and skatole levels in back fat. Therefore, the study suggests that the measurement of these urinary metabolites might provide information with regard to androstenone and skatole levels in live pigs.
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Affiliation(s)
- Cristina C Jacob
- a LUNAM ONIRIS, École nationale vétérinaire, agroalimentaire et de l'alimentation Nantes-Atlantique , Laboratoire d'Étude des Résidus et Contaminants dans les aliments (LABERCA) , Nantes , France
| | - Gaud Dervilly-Pinel
- a LUNAM ONIRIS, École nationale vétérinaire, agroalimentaire et de l'alimentation Nantes-Atlantique , Laboratoire d'Étude des Résidus et Contaminants dans les aliments (LABERCA) , Nantes , France
| | - Yoann Deceuninck
- a LUNAM ONIRIS, École nationale vétérinaire, agroalimentaire et de l'alimentation Nantes-Atlantique , Laboratoire d'Étude des Résidus et Contaminants dans les aliments (LABERCA) , Nantes , France
| | - Audrey Gicquiau
- a LUNAM ONIRIS, École nationale vétérinaire, agroalimentaire et de l'alimentation Nantes-Atlantique , Laboratoire d'Étude des Résidus et Contaminants dans les aliments (LABERCA) , Nantes , France
| | | | - Michel Bonneau
- c INRA-Agrocampus-Ouest, UMR 1348 PEGASE , Saint Gilles , France
| | - Bruno Le Bizec
- a LUNAM ONIRIS, École nationale vétérinaire, agroalimentaire et de l'alimentation Nantes-Atlantique , Laboratoire d'Étude des Résidus et Contaminants dans les aliments (LABERCA) , Nantes , France
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13
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Consumers' sensitivity to androstenone and the evaluation of different cooking methods to mask boar taint. Meat Sci 2016; 123:198-204. [PMID: 27756017 DOI: 10.1016/j.meatsci.2016.10.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 10/05/2016] [Accepted: 10/11/2016] [Indexed: 11/21/2022]
Abstract
Boar taint is an unpleasant odour and flavour present in some entire male pigs that is due to the presence of androstenone and skatole. The aim of the study was to assess the sensitivity of 150 consumers to androstenone and to compare the acceptability and liking of meat from castrated and entire pigs, cooked with different cooking methods. Meat samples consisted of loins from castrated (CM) and entire male pigs (EM) with high levels of androstenone cooked by two cooking methods: sous-vide and fried/breaded with garlic and parsley. Consumers evaluated smell and flavour acceptability, and overall liking of CM and EM for each cooking method. The results of the study showed that dislike of androstenone odour increased significantly with sensitivity. The results of acceptability and overall liking were similar in CM and EM for both cooking methods. Therefore, the two cooking methods used in the study may be useful to mask boar taint.
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14
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Font-I-Furnols M, Aaslyng MD, Backus GBC, Han J, Kuznetsova TG, Panella-Riera N, Semenova AA, Zhang Y, Oliver MA. Russian and Chinese consumers' acceptability of boar meat patties depending on their sensitivity to androstenone and skatole. Meat Sci 2016; 121:96-103. [PMID: 27294519 DOI: 10.1016/j.meatsci.2016.06.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 03/23/2016] [Accepted: 06/02/2016] [Indexed: 11/26/2022]
Abstract
The aim of this work was to study the sensitivity of Chinese and Russian female consumers to androstenone and skatole and to identify their preference for pork patties from entire male pigs compared with those from castrated pigs. One-hundred-twenty women in each country were enrolled. The sensitivity of the consumers to both compounds was tested using smell strips and triangular tests. Pairwise tests were performed comparing patties from castrated male pigs with patties from boars with different levels of androstenone and skatole. Approximately 70% of the Russian and 60% of the Chinese consumers were sensitive to skatole and 37% and 32% were sensitive to androstenone, respectively. Nevertheless, a higher percentage of sensitive Russian consumers compared to Chinese consumers disliked the smell of both compounds. In Russia, the consumers' preferences were higher for patties with low levels of both compounds, while no differences were found in China. In both countries, consumers who were sensitive to skatole also preferred patties with low levels of both compounds. Thus, the levels of androstenone and skatole affect boar patty preferences.
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Affiliation(s)
- M Font-I-Furnols
- IRTA-Product Quality, Finca Camps i Armet, 17121, Monells, Girona, Catalonia, Spain.
| | - M D Aaslyng
- Danish Meat Research Institute (DMRI), Danish Technological Institute, Gregersensvej 9, DK-2630, Tåstrup, Denmark
| | - G B C Backus
- Connecting Agri and Food, Oostwijk 5, 5400 AM Uden, The Netherlands
| | - J Han
- Nanjing Agricultural University, No. 1 Weigang, Nanjing, Jiangsu Province 210095, PR China
| | - T G Kuznetsova
- Gorbatov's All-Russian Meat Research Institute (VNIIMP), 26, Talalikhina Str., 109316 Moscow, Russia
| | - N Panella-Riera
- IRTA-Product Quality, Finca Camps i Armet, 17121, Monells, Girona, Catalonia, Spain
| | - A A Semenova
- Gorbatov's All-Russian Meat Research Institute (VNIIMP), 26, Talalikhina Str., 109316 Moscow, Russia
| | - Y Zhang
- Nanjing Agricultural University, No. 1 Weigang, Nanjing, Jiangsu Province 210095, PR China
| | - M A Oliver
- IRTA-Product Quality, Finca Camps i Armet, 17121, Monells, Girona, Catalonia, Spain
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15
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Aaslyng MD, Broge EHDL, Brockhoff PB, Christensen RHB. The effect of skatole and androstenone on consumer response towards fresh pork from m. longissimus thoracis et lumborum and m. semimembranosus. Meat Sci 2016; 116:174-85. [DOI: 10.1016/j.meatsci.2016.01.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 12/18/2015] [Accepted: 01/25/2016] [Indexed: 10/22/2022]
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16
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Martínez B, Rubio B, Viera C, Linares MB, Egea M, Panella-Riera N, Garrido MD. Evaluation of different strategies to mask boar taint in cooked sausage. Meat Sci 2016; 116:26-33. [PMID: 26844925 DOI: 10.1016/j.meatsci.2016.01.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 01/18/2016] [Accepted: 01/19/2016] [Indexed: 10/22/2022]
Abstract
The use of smoking and/or spices was evaluated for their ability to mask boar taint in frankfurters manufactured from entire pigs with high levels of androstenone. Five frankfurter types were considered: control, smoked, flavouring+smoked, spicy and spicy+smoked. A trained panel in androstenone perception carried out a sensory profile on the different sausages. The highest scores for androstenone perception (odour, flavour and aftertaste) were found in frankfurters that included no masking strategy which indicated the effectiveness of the evaluated strategies. Regarding masking strategies, the contribution of spices and smoking to sensory perception of frankfurters was detected by the panellists. Smoking was the best strategy to mask androstenone odour, while the use of spices masked androstenone odour to a greater extent than androstenone flavour. Only the combined use of spices and smoking was able to eliminate the perception of androstenone. The application of this strategy in frankfurters could be an alternative in the commercialization of entire pigs.
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Affiliation(s)
- B Martínez
- Estación Tecnológica de la Carne, Subdirección de Investigación y Tecnología, Instituto Tecnológico Agrario, Consejería de Agricultura y Ganadería, Junta de Castilla y León, Guijuelo, Avda Filiberto Villalobos, n 5, 37770 Salamanca, Spain.
| | - B Rubio
- Estación Tecnológica de la Carne, Subdirección de Investigación y Tecnología, Instituto Tecnológico Agrario, Consejería de Agricultura y Ganadería, Junta de Castilla y León, Guijuelo, Avda Filiberto Villalobos, n 5, 37770 Salamanca, Spain
| | - C Viera
- Estación Tecnológica de la Carne, Subdirección de Investigación y Tecnología, Instituto Tecnológico Agrario, Consejería de Agricultura y Ganadería, Junta de Castilla y León, Guijuelo, Avda Filiberto Villalobos, n 5, 37770 Salamanca, Spain
| | - M B Linares
- Dpto. Tecnología de los Alimentos, Facultad de Veterinaria, Universidad de Murcia, Campus de Espinardo s/n 30100, Murcia, Spain
| | - M Egea
- Dpto. Tecnología de los Alimentos, Facultad de Veterinaria, Universidad de Murcia, Campus de Espinardo s/n 30100, Murcia, Spain
| | - N Panella-Riera
- IRTA-Monells, Product Quality Program, Finca Camps i Armet, E-17121 Monells, Girona, Spain
| | - M D Garrido
- Dpto. Tecnología de los Alimentos, Facultad de Veterinaria, Universidad de Murcia, Campus de Espinardo s/n 30100, Murcia, Spain
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17
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Aaslyng MD, De Lichtenberg Broge EH, Brockhoff PB, Christensen RH. The effect of skatole and androstenone on consumer response towards streaky bacon and pork belly roll. Meat Sci 2015; 110:52-61. [DOI: 10.1016/j.meatsci.2015.07.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2015] [Revised: 07/01/2015] [Accepted: 07/02/2015] [Indexed: 11/16/2022]
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18
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Mörlein D, Christensen RHB, Gertheiss J. Validation of boar taint detection by sensory quality control: relationship between sample size and uncertainty of performance indicators. Meat Sci 2015; 100:232-6. [PMID: 25460131 DOI: 10.1016/j.meatsci.2014.10.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Revised: 10/03/2014] [Accepted: 10/07/2014] [Indexed: 11/18/2022]
Abstract
To prevent impaired consumer acceptance due to insensitive sensory quality control, it is of primary importance to periodically validate the performance of the assessors. This communication show cases how the uncertainty of sensitivity and specificity estimates is influenced by the total number of assessed samples and the prevalence of positive (here: boar tainted) samples. Furthermore, a statistically sound approach to determining the sample size that is necessary for performance validation is provided. Results show that a small sample size is associated with large uncertainty, i.e., confidence intervals and thus compromising the point estimates for assessor sensitivity. In turn, to reliably identify sensitive assessors with sufficient test power, a large sample size is needed given a certain level of confidence. Easy-to-use tables for sample size estimations are provided.
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19
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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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20
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Mörlein D, Schiermann C, Meier-Dinkel L, Trautmann J, Wigger R, Buttinger G, Wicke M. Effects of context and repeated exposure on food liking: The case of boar taint. Food Res Int 2015. [DOI: 10.1016/j.foodres.2014.11.037] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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21
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Bee G, Chevillon P, Bonneau M. Entire male pig production in Europe. ANIMAL PRODUCTION SCIENCE 2015. [DOI: 10.1071/an15279] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
In Europe the proportion of male pigs that are left ‘entire’ has been high for many years in the British Isles and Iberian Peninsula, and has recently increased in The Netherlands and to a lesser extent in Germany and France. Various European Union partners agreed in 2010 on a road map to abandon piglet castration by 1 January 2018. Despite significant commercial in-confidence research on instrumental methods for detecting boar-tainted carcasses at slaughter plants, nothing is currently being adopted at an industrial scale. A few abattoirs sort out the most heavily tainted carcasses, using human nose methods. However, there are major concerns with their accuracy, which is currently not documented in any publicly available technical report. The importance of androstenone and skatole for boar taint is still debated but a recent study (CAMPIG; G Backus, H Snoek, MA Oliver, M Font i Furnols, M Aluwé, F Tuyttens, M Bonneau, P Chevillon, MD Aaslyng, D Moerlein, L Meier-Dinkel, J Trautmann, J-E Haugen, unpubl. data) has established preliminary equations relating consumer dissatisfaction to androstenone and skatole levels. These equations still need further consolidation to integrate the impact of very high and very low androstenone levels on consumer acceptability. Reducing the incidence of boar taint at a production level and at the same time overcoming possible greater aggressive behaviour of entire male pigs are also critical for abandoning castration. Genetic selection is the most efficient way to reduce androstenone, but the selection of boar-taint-free genetic lines without any adverse consequence on the reproductive and growth performance will take time. Skatole levels can be efficiently reduced via feeding specific feedstuffs and good control of the animals’ environment. Provided that the incidence of boar taint can be reduced to an acceptable level and the residual tainted carcasses can be sorted out at a reasonable price by mutually recognised methods, the abandonment of castration will result in high benefits, up to one-billion euros for both the pork industry, via a drastic reduction of production costs, and society at large, through improved animal welfare and reduced impact on the environment.
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22
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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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23
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Meier-Dinkel L, Gertheiss J, Müller S, Wesoly R, Mörlein D. Evaluating the performance of sensory quality control: the case of boar taint. Meat Sci 2014; 100:73-84. [PMID: 25310880 DOI: 10.1016/j.meatsci.2014.09.013] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Revised: 09/16/2014] [Accepted: 09/17/2014] [Indexed: 11/16/2022]
Abstract
Detection of malodours referred to as 'boar taint' in entire male pigs is essential for quality control when refraining piglet castration. This study analysed the sensitivity and specificity of sensory evaluation by trained assessors (n=18) compared to chemical analysis of two marker compounds (androstenone, skatole) in backfat (n=794). Taking the measurement uncertainty into consideration, several cut-off thresholds for chemical analysis were exemplarily evaluated. Using the panel average score, sensitivity and specificity of sensory analysis ranged from 61 to 69% and 77 to 85%, respectively. Performance of individual assessors varied highly (sensitivity: 47 to 86%; specificity: 45 to 88%) and correlated to olfactory acuity to the compounds. According to receiver operating characteristic-curves, the average panel performed better than single assessors regardless of the sensory criterion shift. Agreement plots illustrate that high skatole levels are better detected than high androstenone levels (useful for assessor feedback). The agreement between sensory and chemical analyses was moderate. Assessors need to be selected carefully.
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Affiliation(s)
- Lisa Meier-Dinkel
- Department of Animal Sciences, Meat Quality Section, University of Goettingen, D-37075 Goettingen, Germany
| | - Jan Gertheiss
- Department of Animal Sciences, Biometrics and Bioinformatics Section, University of Goettingen, D-37075 Goettingen, Germany
| | - Simone Müller
- Thuringian State Institute for Agriculture, Section Animal Production, Regional Office Bad Salzungen, D-36433 Bad Salzungen, Germany
| | - Raffael Wesoly
- Institute of Animal Husbandry and Animal Breeding, Behavioral Physiology of Farm Animals, University of Hohenheim, Stuttgart, Germany
| | - Daniel Mörlein
- Department of Animal Sciences, Meat Quality Section, University of Goettingen, D-37075 Goettingen, Germany.
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24
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Trautmann J, Gertheiss J, Wicke M, Mörlein D. How olfactory acuity affects the sensory assessment of boar fat: a proposal for quantification. Meat Sci 2014; 98:255-62. [PMID: 24976560 DOI: 10.1016/j.meatsci.2014.05.037] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Revised: 04/24/2014] [Accepted: 05/30/2014] [Indexed: 11/28/2022]
Abstract
Due to animal welfare concerns the production of entire male pigs is one viable alternative to surgical castration. Elevated levels of boar taint may, however, impair consumer acceptance. Due to the lack of technical methods, control of boar taint is currently done using sensory quality control. While the need for control measures with respect to boar taint has been clearly stated in EU legislation, no specific requirements for selecting assessors have yet been documented. This study proposes tests for the psychophysical evaluation of olfactory acuity to key volatiles contributing to boar taint. Odor detection thresholds for androstenone and skatole are assessed as well as the subject's ability to identify odorants at various levels through easy-to-use paper smell strips. Subsequently, fat samples are rated by the assessors, and the accuracy of boar taint evaluation is studied. Considerable variation of olfactory performance is observed demonstrating the need for objective criteria to select assessors.
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Affiliation(s)
- Johanna Trautmann
- Department of Animal Sciences, Meat Science Group, University of Göttingen, D-37075 Göttingen, Germany
| | - Jan Gertheiss
- Department of Animal Sciences, Biometrics & Bioinformatics Group, University of Göttingen, D-37075 Göttingen, Germany
| | - Michael Wicke
- Department of Animal Sciences, Meat Science Group, University of Göttingen, D-37075 Göttingen, Germany
| | - Daniel Mörlein
- Department of Animal Sciences, Meat Science Group, University of Göttingen, D-37075 Göttingen, Germany.
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25
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Konstantinidis I, Tsakiropoulou E, Bekiaridou P, Kazantzidou C, Constantinidis J. Use of olfactory training in post-traumatic and postinfectious olfactory dysfunction. Laryngoscope 2013; 123:E85-90. [DOI: 10.1002/lary.24390] [Citation(s) in RCA: 105] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 07/23/2013] [Accepted: 08/13/2013] [Indexed: 11/10/2022]
Affiliation(s)
- Iordanis Konstantinidis
- Smell and Taste Clinic, Second Academic Otorhinolaryngology Department, Papageorgiou Hospital; Aristotle University of Thessaloniki; Thessaloniki Greece
| | - Evangelia Tsakiropoulou
- Smell and Taste Clinic, Second Academic Otorhinolaryngology Department, Papageorgiou Hospital; Aristotle University of Thessaloniki; Thessaloniki Greece
| | - Paschalia Bekiaridou
- Smell and Taste Clinic, Second Academic Otorhinolaryngology Department, Papageorgiou Hospital; Aristotle University of Thessaloniki; Thessaloniki Greece
| | - Chrysa Kazantzidou
- Smell and Taste Clinic, Second Academic Otorhinolaryngology Department, Papageorgiou Hospital; Aristotle University of Thessaloniki; Thessaloniki Greece
| | - Jannis Constantinidis
- Smell and Taste Clinic, Second Academic Otorhinolaryngology Department, Papageorgiou Hospital; Aristotle University of Thessaloniki; Thessaloniki Greece
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