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Bischof G, Witte F, Januschewski E, Schilling F, Terjung N, Heinz V, Juadjur A, Gibis M. Authentication of aged beef in terms of aging time and aging type by 1H NMR spectroscopy. Food Chem 2024; 435:137531. [PMID: 37774627 DOI: 10.1016/j.foodchem.2023.137531] [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: 05/25/2023] [Revised: 08/31/2023] [Accepted: 09/17/2023] [Indexed: 10/01/2023]
Abstract
Meat authenticity addresses parameters such as species, breed, sex, housing system and postmortem treatment. Seventy-four beef backs from two breeds ('Fleckvieh' and 'Schwarzbunt') and three cattle types (heifer, cow, young bull) were dry-aged and wet-aged up to 28 days and analyzed by 1H NMR spectroscopy. Statistical models based on partial least squares regression and discriminant analysis were performed to classify the beef samples by breed, cattle type, aging time, and aging type based on their 1H NMR spectra. The aging time of beef samples can be predicted with an error ± 2.28 days. The cattle type model has an accuracy of cross-validation of 99.2 %, the breed models of 100 % and the aging type model for 28-days aged samples of 99.6 %. These models allow the authentication of beef samples in terms of breed, cattle type, aging time, and aging type with a single 1H NMR measurement.
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Affiliation(s)
- Greta Bischof
- German Institute of Food Technologies (DIL e.V.), Prof.-v.-Klitzing-Str. 7, 49610 Quakenbrück, Germany; Department of Food Material Science, Institute of Food Science and Biotechnology, University of Hohenheim, Garbenstr. 25, 70599 Stuttgart, Germany
| | - Franziska Witte
- German Institute of Food Technologies (DIL e.V.), Prof.-v.-Klitzing-Str. 7, 49610 Quakenbrück, Germany
| | - Edwin Januschewski
- German Institute of Food Technologies (DIL e.V.), Prof.-v.-Klitzing-Str. 7, 49610 Quakenbrück, Germany
| | - Frank Schilling
- German Institute of Food Technologies (DIL e.V.), Prof.-v.-Klitzing-Str. 7, 49610 Quakenbrück, Germany
| | - Nino Terjung
- German Institute of Food Technologies (DIL e.V.), Prof.-v.-Klitzing-Str. 7, 49610 Quakenbrück, Germany
| | - Volker Heinz
- German Institute of Food Technologies (DIL e.V.), Prof.-v.-Klitzing-Str. 7, 49610 Quakenbrück, Germany
| | - Andreas Juadjur
- German Institute of Food Technologies (DIL e.V.), Prof.-v.-Klitzing-Str. 7, 49610 Quakenbrück, Germany
| | - Monika Gibis
- Department of Food Material Science, Institute of Food Science and Biotechnology, University of Hohenheim, Garbenstr. 25, 70599 Stuttgart, Germany.
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Bischof G, Witte F, Sieksmeyer T, Januschweski E, Terjung N, Hertel C, Heinz V, Juadjur A, Gibis M. Metabolic and microbial analyses of the surface and inner part of wet-aged and dry-aged beef. J Food Sci 2023; 88:4375-4387. [PMID: 37807472 DOI: 10.1111/1750-3841.16761] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 08/10/2023] [Accepted: 08/19/2023] [Indexed: 10/10/2023]
Abstract
The effects of aging and microbial growth on the metabolome of aged beef were investigated in this study. The metabolome of beef is influenced by the aging method applied. This includes the aging-related changes in metabolism and the presence of microorganisms on the beef during aging that may affect the beef and its quality. The inner part and the trimmed surface of dry-aged (the surface of dry-aged beef is also called the "crust" due to its drying during aging) and wet-aged beef were analyzed by 1 H nuclear magnetic resonance (NMR) spectroscopy over aging periods up to 28 days at intervals of 7 days, and the former also by microbiological analysis. The metabolome detected by 1 H NMR spectroscopy demonstrated changes over the aging time of beef and differed depending on the sampling location (surface or inner part of beef). The influence of the microbiota on changes in the metabolome can be negligible due to the low microbial growth on the surface of dry-aged beef (<3 log CFU/g). Therefore, the aging-related metabolism postmortem of the analyzed dry-aged beef might be the main factor for metabolic changes. The significantly (p < 0.05) higher amino acids and inosine concentrations and lower inosine 5'-monophosphate concentrations suggested enhanced protein degradation and energy metabolism in the wet-aged beef compared to the dry-aged beef, probably due to the combined influence of the aging and the microbiota on the wet-aged beef and, thus, its metabolic changes.
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Affiliation(s)
- Greta Bischof
- German Institute of Food Technologies (DIL e.V.), Quakenbrück, Germany
- Department of Food Material Science, Institute of Food Science and Biotechnology, University of Hohenheim, Stuttgart, Germany
| | - Franziska Witte
- German Institute of Food Technologies (DIL e.V.), Quakenbrück, Germany
| | | | | | - Nino Terjung
- German Institute of Food Technologies (DIL e.V.), Quakenbrück, Germany
| | - Christian Hertel
- German Institute of Food Technologies (DIL e.V.), Quakenbrück, Germany
| | - Volker Heinz
- German Institute of Food Technologies (DIL e.V.), Quakenbrück, Germany
| | - Andreas Juadjur
- German Institute of Food Technologies (DIL e.V.), Quakenbrück, Germany
| | - Monika Gibis
- Department of Food Material Science, Institute of Food Science and Biotechnology, University of Hohenheim, Stuttgart, Germany
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Álvarez S, Mullen AM, Álvarez C, Hamill RM, O'Neill E, Gagaoua M. Impact of sampling location and aging on the Longissimus thoracis et lumborum muscle proteome of dry-aged beef. Meat Sci 2023; 205:109315. [PMID: 37625354 DOI: 10.1016/j.meatsci.2023.109315] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 08/10/2023] [Accepted: 08/15/2023] [Indexed: 08/27/2023]
Abstract
This study aimed to explore the differences in the proteome and molecular pathways between two sampling locations (external, internal) of bovine Longissimus thoracis et lumborum (LTL) muscles at 0, 21, and 28 days of dry-aging (i.e. 3, 24, and 31 days post-mortem). It further assessed the impact of post-mortem aging on the meat proteome changes and the biological processes at interplay. Proteins related to defence response to bacterium and regulation of viral entry into host cell were identified to be more abundant on the external location before dry-aging, which may be associated to the oxidative conditions and microbial activity to which post-mortem muscle is exposed during dressing, chilling, and/or quartering of the carcasses. This highlights the relevance of sampling from interior tissues when searching for meat quality biomarkers. As dry-aging progressed, the meat proteome and related biological processes changed differently between sampling locations; proteins related to cell-cell adhesion and ATP metabolic processes pathways were revealed in the external location at 21 and 28 days, respectively. On the other hand, the impact of aging on the proteome of the interior meat samples, evidenced that muscle contraction and structure together with energy metabolism were the major pathways driving dry-aging. Additionally, aging impacted other pathways in the interior tissues, such as regulation of calcium import, neutrophil activation, and regeneration. Overall, the differences in the proteome allowed discriminating the three dry-aging times, regardless of the sampling location. Several proteins were proposed for validation as robust biomarkers to monitor the aging process (tenderization) of dry-aged beef: TTN, GRM4, EEF1A1, LDB3, CILP2, TNNT3, GAPDH, SERPINI1, and OMD.
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Affiliation(s)
- Sara Álvarez
- Dept. of Food Quality and Sensory Science, Teagasc Food Research Centre Ashtown, Dublin D15 DY05, Ireland; School of Food and Nutritional Sciences, University College, Cork, Western Road, Cork T12 YN60, Ireland
| | - Anne Maria Mullen
- Dept. of Food Quality and Sensory Science, Teagasc Food Research Centre Ashtown, Dublin D15 DY05, Ireland
| | - Carlos Álvarez
- Dept. of Food Quality and Sensory Science, Teagasc Food Research Centre Ashtown, Dublin D15 DY05, Ireland
| | - Ruth M Hamill
- Dept. of Food Quality and Sensory Science, Teagasc Food Research Centre Ashtown, Dublin D15 DY05, Ireland
| | - Eileen O'Neill
- School of Food and Nutritional Sciences, University College, Cork, Western Road, Cork T12 YN60, Ireland
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Ruedt C, Gibis M, Weiss J. Meat color and iridescence: Origin, analysis, and approaches to modulation. Compr Rev Food Sci Food Saf 2023; 22:3366-3394. [PMID: 37306532 DOI: 10.1111/1541-4337.13191] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 04/27/2023] [Accepted: 05/16/2023] [Indexed: 06/13/2023]
Abstract
Meat color is an important aspect for the meat industry since it strongly determines the consumers' perception of product quality and thereby significantly influences the purchase decision. Emergence of new vegan meat analogs has renewed interest in the fundamental aspects of meat color in order to replicate it. The appearance of meat is based on a complex interplay between the pigment-based meat color from myoglobin and its chemical forms and light scattering from the muscle's microstructure. While myoglobin biochemistry and pigment-based meat color have been extensively studied, research on the physicochemical contribution of light scattering to meat color and the special case of structural colors causing meat iridescence has received only little attention. Former review articles focused mostly on the biochemical or physical mechanisms rather than the interplay between them, in particular the role that structural colors play. While from an economic point of view, meat iridescence might be considered negligible, an enhanced understanding of the underlying mechanisms and the interactions of light with meat microstructures can improve our overall understanding of meat color. Therefore, this review discusses both biochemical and physicochemical aspects of meat color including the origin of structural colors, highlights new color measurement methodologies suitable to investigate color phenomena such as meat iridescence, and finally presents approaches to modulate meat color in terms of base composition, additives, and processing.
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Affiliation(s)
- Chiara Ruedt
- Department of Food Material Science, Institute of Food Science and Biotechnology, University of Hohenheim, Stuttgart, Germany
| | - Monika Gibis
- Department of Food Material Science, Institute of Food Science and Biotechnology, University of Hohenheim, Stuttgart, Germany
| | - Jochen Weiss
- Department of Food Material Science, Institute of Food Science and Biotechnology, University of Hohenheim, Stuttgart, Germany
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Song Z, Hwang I. Differences in toughness and aging potential of longissimus lumborum muscles between Hanwoo cow, bull and steer. JOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY 2023; 65:865-877. [PMID: 37970498 PMCID: PMC10640951 DOI: 10.5187/jast.2022.e128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 12/23/2022] [Accepted: 12/26/2022] [Indexed: 11/17/2023]
Abstract
Thirty Hanwoo cattle including bulls, cows, and steers (n = 10 each) were slaughtered and investigated for carcass traits (weight, meat color, fat color, yield index, maturity, marbling score, back-fat thickness, and firmness) and meat quality. The meat quality such as: pH, color, cooking loss, fatty acid, thiobarbituric acid reactive substance, warner-bratzler shear force, tensile tests, and texture profiles were analyzed on longissimus lumborum (LL) muscles of the carcasses at different aging times (3 d and 21 d). The results showed that steers and cows had higher back-fat thickness and marbling score, and a lower firmness (p < 0.001) than bulls. Bulls exhibited a lower meat quality indicating by higher cooking loss, thiobarbituric acid reactive substance content, warner-bratzler shear force and tensile test values (p < 0.01). Regarding the sensory property, the bull meat also had higher hardness, and lower tenderness, juiciness and flavor scores than the cow or steer meat (p < 0.01). Additionally, the bull meat had a higher polyunsaturated fatty acid and a lower monounsaturated fatty acid contents (p < 0.01). With increased aging time, the meat tenderness was improved in all the genders. Taken together, the present study demonstrated that the gender and aging time affected the carcass traits, fatty acid and sensory quality of beef. Postmortem aging could improve the meat tenderness of all genders especially bulls.
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Affiliation(s)
- Zhen Song
- College of Animal Science and Technology,
Henan University of Science and Technology, Luoyang 471023,
China
| | - Inho Hwang
- Department of Animal Science, Jeonbuk
National University, Jeonju 54896, Korea
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Variations in the Metabolome of Unaged and Aged Beef from Black-and-White Cows and Heifers by 1H NMR Spectroscopy. Foods 2023; 12:foods12040785. [PMID: 36832861 PMCID: PMC9956905 DOI: 10.3390/foods12040785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 02/01/2023] [Accepted: 02/08/2023] [Indexed: 02/15/2023] Open
Abstract
(1) Background: The selection of raw material and the postmortem processing of beef influence its quality, such as taste. In this study, the metabolome of beef from cows and heifers is examined for differences during aging. (2) Methods: Thirty strip loins from eight heifers and seven cows (breed code: 01-SBT) were cut into ten pieces and aged for 0, 7, 14, 21 and 28 days. Samples from the left strip loins were wet-aged in vacuum, while samples from right strip loins were dry-aged at 2 °C and 75% relative humidity. The beef samples were extracted with methanol-chloroform-water, and the polar fraction was used for 1H NMR analysis. (3) Results: The PCA and OPLS-DA showed that the metabolome of cows and heifers varied. Eight metabolites revealed significant differences (p < 0.05) in the samples from cows and heifers. The aging time and aging type of beef also affected the metabolome. Twenty-eight and 12 metabolites differed significantly (p < 0.05) with aging time and aging type, respectively. (4) Conclusions: The variations between cows and heifers and aging time affect the metabolome of beef. By comparison, the influence of aging type is present but less pronounced.
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Physicochemical property analysis of lyophilized fresh, wet-, and dry-aged beef powders: Application of dry-aged beef crust as a food additive. Meat Sci 2023; 195:109014. [DOI: 10.1016/j.meatsci.2022.109014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 10/14/2022] [Accepted: 10/15/2022] [Indexed: 11/09/2022]
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Bischof G, Witte F, Terjung N, Heinz V, Juadjur A, Gibis M. Metabolic, proteomic and microbial changes postmortem and during beef aging. Crit Rev Food Sci Nutr 2022; 64:1076-1109. [PMID: 36004604 DOI: 10.1080/10408398.2022.2113362] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The purpose of this review is to provide an overview of the current knowledge about proteomic and metabolic changes in beef, the microbiological alteration postmortem and during aging, and observe the influence on beef quality parameters, such as tenderness, taste and flavor. This review will also focus on the different aging types (wet- and dry-aging), the aging or postmortem time of beef and their effect on the proteome and metabolome of beef. The Ca2+ homeostasis and adenosine 5'-triphosphate breakdown are the main reactions in the pre-rigor phase. After rigor mortis, the enzymatic degradation of connective tissues and breakdown of energy metabolism dominate molecular changes in beef. Important metabolic processes leading to the formation of saccharides, nucleotides, organic acids (e.g. lactic acid), creatine and fatty acids are considered in this context as possible flavor precursors or formers of beef flavor and taste. Flavor precursors are substrates for lipid oxidation, Strecker degradation and Maillard reaction during cooking or roasting. The findings presented should serve as a basis for a better understanding of beef aging and its molecular effects and are intended to contribute to meeting the challenges of improving beef quality.
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Affiliation(s)
- Greta Bischof
- Chemical Analytics, German Institute of Food Technologies (DIL e.V.), Quakenbrück, Germany
- Department of Food Material Science, Institute of Food Science and Biotechnology, University of Hohenheim, Stuttgart, Germany
| | - Franziska Witte
- Product Innovation, German Institute of Food Technologies (DIL e.V.), Quakenbrück, Germany
| | - Nino Terjung
- Product Innovation, DIL Technology GmbH, Quakenbrück, Germany
| | - Volker Heinz
- Research Directorate, German Institute of Food Technologies (DIL e.V.), Quakenbrück, Germany
| | - Andreas Juadjur
- Chemical Analytics, German Institute of Food Technologies (DIL e.V.), Quakenbrück, Germany
| | - Monika Gibis
- Department of Food Material Science, Institute of Food Science and Biotechnology, University of Hohenheim, Stuttgart, Germany
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