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Goj D, Ebner S, Horvat M, Arhar S, Martínková L, Winkler M. Cell-free reduction of carboxylic acids with secreted carboxylic acid reductase. J Biotechnol 2024; 382:44-50. [PMID: 38266924 DOI: 10.1016/j.jbiotec.2024.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 12/20/2023] [Accepted: 01/18/2024] [Indexed: 01/26/2024]
Abstract
Mycobacterium marinum CAR (MmCAR) is one of the most widely used CARs as the key enzyme for the synthesis of aldehydes, alcohols and further products from the respective carboxylic acids. Herein, we describe the first functionally secreted 131 kDa CAR and its isolated A-domain using Komagataella phaffii and a methanol-free constitutive expression strategy. Precipitated and lyophilized MmCAR (500 µg) was isolated from the culture supernatant and showed no decrease in activity for piperonylic acid (80% conversion), even when stored for up to 3 weeks at 4°C. Lyophilized MmCAR precipitate gave 48% yield of E/Z-nonanal-4-nitrobenzoyloxime from the reduction of nonanoic acid and in-situ derivatization with O-4-nitrobenzoyl-hydroxylamine. Furthermore, K. phaffii could successfully secrete the MmCAR adenylation domain. Its activity was confirmed by the amidation of benzoic acid with n-hexylamine. Neither enzyme variant was glycosylated by the yeast. In summary, functional CAR can be secreted by K. phaffii and used for cell free conversion of carboxylic acids to various products.
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Affiliation(s)
- Dominic Goj
- Institute of Molecular Biotechnology, Graz University of Technology, NAWI Graz, Petersgasse 14, Graz, Austria
| | - Stella Ebner
- Institute of Molecular Biotechnology, Graz University of Technology, NAWI Graz, Petersgasse 14, Graz, Austria
| | - Melissa Horvat
- Institute of Molecular Biotechnology, Graz University of Technology, NAWI Graz, Petersgasse 14, Graz, Austria
| | - Simon Arhar
- Austrian Center of Industrial Biotechnology, Krenngasse 37, Graz, Austria
| | - Ludmila Martínková
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, Prague CZ-14200, Czech Republic
| | - Margit Winkler
- Institute of Molecular Biotechnology, Graz University of Technology, NAWI Graz, Petersgasse 14, Graz, Austria; Austrian Center of Industrial Biotechnology, Krenngasse 37, Graz, Austria.
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2
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Shen C, Wang Y. Recent Progress on Peroxidase Modification and Application. Appl Biochem Biotechnol 2024:10.1007/s12010-023-04835-w. [PMID: 38180646 DOI: 10.1007/s12010-023-04835-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/19/2023] [Indexed: 01/06/2024]
Abstract
Peroxdiase is one of the member of oxireductase super family, which has a broad substrate range and a variety of reaction types, including hydroxylation, epoxidation or halogenation of unactivated C-H bonds, and aromatic group or biophenol compounds. Here, we summarized the recently discovered enzymes with peroxidation activity, and focused on the special structures, sites, and corresponding strategies that can change the peroxidase catalytic activity, stability, and substrate range. The comparison of the structural differences between these natural enzymes and the mimic enzymes of binding nanomaterials and polymer materials is helpful to expand the application of peroxidase in industry. In addition, we also reviewed the catalytic application of peroxidase in the synthesis of important organic molecules and the degradation of pollutants.
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Affiliation(s)
- Chen Shen
- College of Chemical & Pharmaceutical Engineering, Hebei University of Science & Technology, Shijiazhuang, 050018, China.
- State Key Laboratory Breeding Base-Hebei Province Key Laboratory of Molecular Chemistry for Drug, Hebei University of Science & Technology, Shijiazhuang, 050018, China.
| | - Yongfa Wang
- College of Chemical & Pharmaceutical Engineering, Hebei University of Science & Technology, Shijiazhuang, 050018, China
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3
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Schober L, Dobiašová H, Jurkaš V, Parmeggiani F, Rudroff F, Winkler M. Enzymatic reactions towards aldehydes: An overview. FLAVOUR FRAG J 2023; 38:221-242. [PMID: 38505272 PMCID: PMC10947199 DOI: 10.1002/ffj.3739] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 03/01/2023] [Accepted: 03/06/2023] [Indexed: 03/21/2024]
Abstract
Many aldehydes are volatile compounds with distinct and characteristic olfactory properties. The aldehydic functional group is reactive and, as such, an invaluable chemical multi-tool to make all sorts of products. Owing to the reactivity, the selective synthesis of aldehydic is a challenging task. Nature has evolved a number of enzymatic reactions to produce aldehydes, and this review provides an overview of aldehyde-forming reactions in biological systems and beyond. Whereas some of these biotransformations are still in their infancy in terms of synthetic applicability, others are developed to an extent that allows their implementation as industrial biocatalysts.
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Affiliation(s)
- Lukas Schober
- Institute of Molecular BiotechnologyGraz University of TechnologyGrazAustria
| | - Hana Dobiašová
- Institute of Chemical and Environmental EngineeringSlovak University of TechnologyBratislavaSlovakia
| | - Valentina Jurkaš
- Institute of Molecular BiotechnologyGraz University of TechnologyGrazAustria
| | - Fabio Parmeggiani
- Dipartimento di Chimica, Materiali ed Ingegneria Chimica “Giulio Natta”Politecnico di MilanoMilanItaly
| | - Florian Rudroff
- Institute of Applied Synthetic ChemistryTU WienViennaAustria
| | - Margit Winkler
- Institute of Molecular BiotechnologyGraz University of TechnologyGrazAustria
- Area BiotransformationsAustrian Center of Industrial BiotechnologyGrazAustria
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4
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Kanter JP, Honold PJ, Luh D, Heiles S, Spengler B, Fraatz MA, Zorn H, Hammer AK. Biocatalytic Production of Odor-Active Fatty Aldehydes from Fungal Lipids. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:8112-8120. [PMID: 37196237 DOI: 10.1021/acs.jafc.3c01972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Odor-active fatty aldehydes are important compounds for the flavor and fragrance industry. By a coupled enzymatic reaction using an α-dioxygenase (α-DOX) and an aldehyde dehydrogenase (FALDH), scarcely available aldehydes from the biotransformation of margaroleic acid [17:1(9Z)] were characterized and have shown highly interesting odor profiles, including citrus-like, soapy, herbaceous, and savory notes. In particular, (Z)-8-hexadecenal and (Z)-7-pentadecenal exhibited notable meaty odor characteristics. Submerged cultivation of Mortierella hyalina revealed the accumulation of the above-mentioned, naturally uncommon fatty acid 17:1(9Z). Its production was significantly increased by the modulation of culture conditions, whereas the highest accumulation was observed after 4 days at 24 °C and l-isoleucine supplementation. The lipase-, α-DOX-, and FALDH-mediated biotransformation of M. hyalina lipid extract resulted in a complex aldehyde mixture with a high aldehyde yield of ∼50%. The odor qualities of the formed aldehydes were assessed by means of gas chromatography-olfactometry, and several of the obtained fatty aldehydes have been sensorially described for the first time. To assess the aldehyde mixture's potential as a flavor ingredient, a sensory evaluation was conducted. The obtained product exhibited intense citrus-like, green, and soapy odor impressions.
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Affiliation(s)
- Jean-Philippe Kanter
- Justus Liebig University Giessen, Institute of Food Chemistry and Food Biotechnology, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Philipp Jakob Honold
- Justus Liebig University Giessen, Institute of Food Chemistry and Food Biotechnology, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - David Luh
- Justus Liebig University Giessen, Institute of Inorganic and Analytical Chemistry, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Sven Heiles
- Justus Liebig University Giessen, Institute of Inorganic and Analytical Chemistry, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
- Leibniz-Institut für Analytische Wissenschaften─ISAS─e.V., Otto-Hahn-Straße 6b, 44139 Dortmund, Germany
- Lipidomics, Faculty of Chemistry, University of Duisburg-Essen, Universitätsstrasse 5, 45141 Essen, Germany
| | - Bernhard Spengler
- Justus Liebig University Giessen, Institute of Inorganic and Analytical Chemistry, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Marco Alexander Fraatz
- Justus Liebig University Giessen, Institute of Food Chemistry and Food Biotechnology, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Holger Zorn
- Justus Liebig University Giessen, Institute of Food Chemistry and Food Biotechnology, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
- Fraunhofer Institute for Molecular Biology and Applied Ecology, Branch of Bioresources, Ohlebergsweg 12, 35392 Giessen, Germany
| | - Andreas Klaus Hammer
- Fraunhofer Institute for Molecular Biology and Applied Ecology, Branch of Bioresources, Ohlebergsweg 12, 35392 Giessen, Germany
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Zhu B, Gao H, Yang F, Li Y, Yang Q, Liao Y, Guo H, Xu K, Tang Z, Gao N, Zhang Y, He J. Comparative Characterization of Volatile Compounds of Ningxiang Pig, Duroc and Their Crosses (Duroc × Ningxiang) by Using SPME-GC-MS. Foods 2023; 12:foods12051059. [PMID: 36900576 PMCID: PMC10001212 DOI: 10.3390/foods12051059] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 02/24/2023] [Accepted: 02/28/2023] [Indexed: 03/06/2023] Open
Abstract
With the aim to study the flavor characteristics of Ningxiang pigs (NX), Duroc (DC) pigs, and their crosses (Duroc × Ningxiang, DN), electronic nose and gas chromatography-mass spectrometry analysis were used to detect the volatile flavor substances in NX, DC, and DN (n = 34 pigs per population). A total of 120 volatile substances were detected in the three populations, of which 18 substances were common. Aldehydes were the main volatile substances in the three populations. Further analysis revealed that tetradecanal, 2-undecenal, and nonanal were the main aldehyde substances in the three kinds of pork, and the relative content of benzaldehyde in the three populations had significant differences. The flavor substances of DN were similar to that of NX and showed certain heterosis in flavor substances. These results provide a theoretical basis for the study of flavor substances of China local pig breeds and new ideas for pig breeding.
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Affiliation(s)
- Bangqiang Zhu
- Hunan Provincial Key Laboratory for Genetic Improvement of Domestic Animal, College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Hu Gao
- Hunan Provincial Key Laboratory for Genetic Improvement of Domestic Animal, College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Fang Yang
- Hunan Provincial Key Laboratory for Genetic Improvement of Domestic Animal, College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Yiyang Li
- Hunan Provincial Key Laboratory for Genetic Improvement of Domestic Animal, College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Qiaoyue Yang
- Hunan Provincial Key Laboratory for Genetic Improvement of Domestic Animal, College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Yinchang Liao
- Hunan Provincial Key Laboratory for Genetic Improvement of Domestic Animal, College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Haimin Guo
- Hunan Provincial Key Laboratory for Genetic Improvement of Domestic Animal, College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Kang Xu
- Laboratory of Animal Nutrition Physiology and Metabolism, The Institute of Subtropical Agriculture, The Chinese Academy of Sciences, Changsha 410125, China
| | - Zhiqiang Tang
- Ningxiang Animal Husbandry and Fishery Affairs Center, Ningxiang 410600, China
| | - Ning Gao
- Hunan Provincial Key Laboratory for Genetic Improvement of Domestic Animal, College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Yuebo Zhang
- Hunan Provincial Key Laboratory for Genetic Improvement of Domestic Animal, College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Jun He
- Hunan Provincial Key Laboratory for Genetic Improvement of Domestic Animal, College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
- Correspondence:
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Kanter JP, Honold PJ, Lüke D, Heiles S, Spengler B, Fraatz MA, Harms C, Ley JP, Zorn H, Hammer AK. An enzymatic tandem reaction to produce odor-active fatty aldehydes. Appl Microbiol Biotechnol 2022; 106:6095-6107. [PMID: 36040487 PMCID: PMC9468042 DOI: 10.1007/s00253-022-12134-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 08/04/2022] [Accepted: 08/11/2022] [Indexed: 11/16/2022]
Abstract
Abstract Aldehydes represent a versatile and favored class of flavoring substances. A biocatalytic access to odor-active aldehydes was developed by conversion of fatty acids with two enzymes of the α-dioxygenase pathway. The recombinant enzymes α-dioxygenase (α-DOX) originating from Crocosphaera subtropica and fatty aldehyde dehydrogenase (FALDH) from Vibrio harveyi were heterologously expressed in E. coli, purified, and applied in a coupled (tandem) repetitive reaction. The concept was optimized in terms of number of reaction cycles and production yields. Up to five cycles and aldehyde yields of up to 26% were achieved. Afterward, the approach was applied to sea buckthorn pulp oil as raw material for the enzyme catalyzed production of flavoring/fragrance ingredients based on complex aldehyde mixtures. The most abundant fatty acids in sea buckthorn pulp oil, namely palmitic, palmitoleic, oleic, and linoleic acid, were used as substrates for further biotransformation experiments. Various aldehydes were identified, semi-quantified, and sensorially characterized by means of headspace–solid phase microextraction–gas chromatography–mass spectrometry–olfactometry (HS–SPME–GC–MS–O). Structural validation of unsaturated aldehydes in terms of double-bond positions was performed by multidimensional high-resolution mass spectrometry experiments of their Paternò–Büchi (PB) photoproducts. Retention indices and odor impressions of inter alia (Z,Z)-5,8-tetradecadienal (Z,Z)-6,9-pentadecadienal, (Z)-8-pentadecenal, (Z)-4-tridecenal, (Z)-6-pentadecenal, and (Z)-8-heptadecenal were determined for the first time. Key points • Coupled reaction of Csα-DOX and VhFALDH yields chain-shortened fatty aldehydes. • Odors of several Z-unsaturated fatty aldehydes are described for the first time. • Potential for industrial production of aldehyde-based odorants from natural sources. Graphical abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1007/s00253-022-12134-3.
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Affiliation(s)
- Jean-Philippe Kanter
- Institute of Food Chemistry and Food Biotechnology, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany
| | - Philipp Jakob Honold
- Institute of Food Chemistry and Food Biotechnology, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany
| | - David Lüke
- Institute of Inorganic and Analytical Chemistry, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany
| | - Sven Heiles
- Institute of Inorganic and Analytical Chemistry, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany
| | - Bernhard Spengler
- Institute of Inorganic and Analytical Chemistry, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany
| | - Marco Alexander Fraatz
- Institute of Food Chemistry and Food Biotechnology, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany.,Fraunhofer Institute for Molecular Biology and Applied Ecology, Ohlebergsweg 12, 35394, Giessen, Germany
| | - Christoph Harms
- Symrise AG, Muehlenfeldstrasse 1, 37603, Holzminden, Germany
| | - Jakob Peter Ley
- Symrise AG, Muehlenfeldstrasse 1, 37603, Holzminden, Germany
| | - Holger Zorn
- Institute of Food Chemistry and Food Biotechnology, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany.,Fraunhofer Institute for Molecular Biology and Applied Ecology, Ohlebergsweg 12, 35394, Giessen, Germany
| | - Andreas Klaus Hammer
- Institute of Food Chemistry and Food Biotechnology, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany. .,Fraunhofer Institute for Molecular Biology and Applied Ecology, Ohlebergsweg 12, 35394, Giessen, Germany.
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7
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Kim IJ, Bayer T, Terholsen H, Bornscheuer U. α-Dioxygenases (α-DOXs): Promising biocatalysts for the environmentally friendly production of aroma compounds. Chembiochem 2022; 23:e202100693. [PMID: 35107200 PMCID: PMC9305512 DOI: 10.1002/cbic.202100693] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 02/02/2022] [Indexed: 11/14/2022]
Abstract
Fatty aldehydes (FALs) can be derived from fatty acids (FAs) and related compounds and are frequently used as flavors and fragrances. Although chemical methods have been conventionally used, their selective biotechnological production aiming at more efficient and eco‐friendly synthetic routes is in demand. α‐Dioxygenases (α‐DOXs) are heme‐dependent oxidative enzymes biologically involved in the initial step of plant FA α‐oxidation during which molecular oxygen is incorporated into the Cα‐position of a FA (Cn) to generate the intermediate FA hydroperoxide, which is subsequently converted into the shortened corresponding FAL (Cn‐1). α‐DOXs are promising biocatalysts for the flavor and fragrance industries, they do not require NAD(P)H as cofactors or redox partner proteins, and they have a broad substrate scope. Here, we highlight recent advances in the biocatalytic utilization of α‐DOXs with emphasis on newly discovered cyanobacterial α‐DOXs as well as analytical methods to measure α‐DOX activity in vitro and in vivo.
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Affiliation(s)
- In Jung Kim
- University of Greifswald: Universitat Greifswald, Biotechnology & Enzyme Catalysis, GERMANY
| | - Thomas Bayer
- University of Greifswald: Universitat Greifswald, Biotechnology & Enzyme Catalysis, GERMANY
| | - Henrik Terholsen
- Universitat Greifswald, Biotechnology & Enzyme Catalysis, GERMANY
| | - Uwe Bornscheuer
- Greifswald University, Dept. of Biotechnology & Enzyme Catalysis, Felix-Hausdorff-Str. 4, 17487, Greifswald, GERMANY
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8
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Kim IJ, Brack Y, Bayer T, Bornscheuer UT. Two novel cyanobacterial α-dioxygenases for the biosynthesis of fatty aldehydes. Appl Microbiol Biotechnol 2021; 106:197-210. [PMID: 34882252 PMCID: PMC8720084 DOI: 10.1007/s00253-021-11724-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 11/27/2021] [Accepted: 11/30/2021] [Indexed: 11/21/2022]
Abstract
α-Dioxygenases (α-DOXs) are known as plant enzymes involved in the α-oxidation of fatty acids through which fatty aldehydes, with a high commercial value as flavor and fragrance compounds, are synthesized as products. Currently, little is known about α-DOXs from non-plant organisms. The phylogenic analysis reported here identified a substantial number of α-DOX enzymes across various taxa. Here, we report the functional characterization and Escherichia coli whole-cell application of two novel α-DOXs identified from cyanobacteria: CalDOX from Calothrix parietina and LepDOX from Leptolyngbya sp. The catalytic behavior of the recombinantly expressed CalDOX and LepDOX revealed that they are heme-dependent like plant α-DOXs but exhibit activities toward medium carbon fatty acids ranging from C10 to C14 unlike plant α-DOXs. The in-depth molecular investigation of cyanobacterial α-DOXs and their application in an E. coli whole system employed in this study is useful not only for the understanding of the molecular function of α-DOXs, but also for their industrial utilization in fatty aldehyde biosynthesis. Key points • Two novel α-dioxygenases from Cyanobacteria are reported • Both enzymes prefer medium-chain fatty acids • Both enzymes are useful for fatty aldehyde biosynthesis
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Affiliation(s)
- In Jung Kim
- Department of Biotechnology and Enzyme Catalysis, Institute of Biochemistry, University of Greifswald, 17489, Greifswald, Germany
| | - Yannik Brack
- Department of Biotechnology and Enzyme Catalysis, Institute of Biochemistry, University of Greifswald, 17489, Greifswald, Germany
| | - Thomas Bayer
- Department of Biotechnology and Enzyme Catalysis, Institute of Biochemistry, University of Greifswald, 17489, Greifswald, Germany
| | - Uwe T Bornscheuer
- Department of Biotechnology and Enzyme Catalysis, Institute of Biochemistry, University of Greifswald, 17489, Greifswald, Germany.
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9
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Jin Y, Cui H, Yuan X, Liu L, Liu X, Wang Y, Ding J, Xiang H, Zhang X, Liu J, Li H, Zhao G, Wen J. Identification of the main aroma compounds in Chinese local chicken high-quality meat. Food Chem 2021; 359:129930. [PMID: 33951611 DOI: 10.1016/j.foodchem.2021.129930] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 04/18/2021] [Accepted: 04/19/2021] [Indexed: 02/07/2023]
Abstract
Chicken meat flavor has deteriorated with the increase of meat production. With the aim to identify the main aroma compounds in chicken meat, 972 Chinese local chickens are used to analyze the volatile organic compounds (VOCs) in meat by gas chromatography-mass spectrometry analysis. The results revealed that various VOCs present in the meat belong to aldehyde, alcohol and alkane classes. Total aldehyde content is highest in breeds significantly negatively correlated with the content of the other two classes, and their flavor can be distinguished by E-nose. Also, 9 common VOCs were shared by different breeds. Furthermore, principal component analysis identified hexanal and 1-octen-3-ol as the major VOCs according to the three classes, 9 common VOCs, or all VOCs as a whole in each breed, respectively. This study identified the main aroma VOCs in chicken meat, which could serve as a basis for breeding chickens with improved meat flavor.
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Affiliation(s)
- Yuxi Jin
- Chinese Academy of Agricultural Science, State Key Laboratory of Animal Nutrition, Beijing 100193, China
| | - Huanxian Cui
- Chinese Academy of Agricultural Science, State Key Laboratory of Animal Nutrition, Beijing 100193, China
| | - Xiaoya Yuan
- Chinese Academy of Agricultural Science, State Key Laboratory of Animal Nutrition, Beijing 100193, China
| | - Lu Liu
- Chinese Academy of Agricultural Science, State Key Laboratory of Animal Nutrition, Beijing 100193, China
| | - Xiaojing Liu
- Chinese Academy of Agricultural Science, State Key Laboratory of Animal Nutrition, Beijing 100193, China
| | - Yongli Wang
- Chinese Academy of Agricultural Science, State Key Laboratory of Animal Nutrition, Beijing 100193, China
| | - Jiqiang Ding
- Chinese Academy of Agricultural Science, State Key Laboratory of Animal Nutrition, Beijing 100193, China
| | - Hai Xiang
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, Foshan University, Guangdong 528225, China
| | - Xinxiao Zhang
- Jiangsu Academy of Agricultural Sciences, Jiangsu 210014, China
| | - Jianfeng Liu
- China Agricultural University, Beijing 100193, China
| | - Hua Li
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, Foshan University, Guangdong 528225, China
| | - Guiping Zhao
- Chinese Academy of Agricultural Science, State Key Laboratory of Animal Nutrition, Beijing 100193, China
| | - Jie Wen
- Chinese Academy of Agricultural Science, State Key Laboratory of Animal Nutrition, Beijing 100193, China.
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10
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Hammer AK, Emrich NO, Ott J, Birk F, Fraatz MA, Ley JP, Geissler T, Bornscheuer UT, Zorn H. Biotechnological Production and Sensory Evaluation of ω1-Unsaturated Aldehydes. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:345-353. [PMID: 33350305 DOI: 10.1021/acs.jafc.0c06872] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Lipid extracts of the fungus Flammulina velutipes were found to contain various scarce fatty acids including dodec-11-enoic acid and di- and tri-unsaturated C16 isomers. A biotechnological approach using a heterologously expressed carboxylic acid reductase was developed to transform the fatty acids into the respective aldehydes, yielding inter alia dodec-11-enal. Supplementation studies gave insights into the fungal biosynthesis of this rarely occurring acid and suggested a terminal desaturation of lauric acid being responsible for its formation. A systematic structure-odor relationship assessment of terminally unsaturated aldehydes (C7-C13) revealed odor thresholds in the range of 0.24-22 μg/L in aqueous solution and 0.039-29 ng/L in air. In both cases, non-8-enal was identified as the most potent compound. All aldehydes exhibited green odor qualities. Short-chained substances were additionally associated with grassy, melon-, and cucumber-like notes, while longer-chained homologs smelled soapy and coriander leaf-like with partly herbaceous nuances. Dodec-11-enal turned out to be of highly pleasant scent without off-notes.
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Affiliation(s)
- Andreas K Hammer
- Justus Liebig University Giessen, Institute of Food Chemistry and Food Biotechnology, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
- Fraunhofer Institute for Molecular Biology and Applied Ecology, Ohlebergsweg 12, 35392 Giessen, Germany
| | - Nils O Emrich
- Justus Liebig University Giessen, Institute of Food Chemistry and Food Biotechnology, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Janina Ott
- Justus Liebig University Giessen, Institute of Food Chemistry and Food Biotechnology, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Florian Birk
- Justus Liebig University Giessen, Institute of Food Chemistry and Food Biotechnology, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Marco A Fraatz
- Justus Liebig University Giessen, Institute of Food Chemistry and Food Biotechnology, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
- Fraunhofer Institute for Molecular Biology and Applied Ecology, Ohlebergsweg 12, 35392 Giessen, Germany
| | - Jakob P Ley
- Symrise AG, Muehlenfeldstrasse 1, 37603 Holzminden, Germany
| | | | - Uwe T Bornscheuer
- Department of Biotechnology and Enzyme Catalysis, Greifswald University, Felix-Hausdorff-Strasse 4, 17487 Greifswald, Germany
| | - Holger Zorn
- Justus Liebig University Giessen, Institute of Food Chemistry and Food Biotechnology, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
- Fraunhofer Institute for Molecular Biology and Applied Ecology, Ohlebergsweg 12, 35392 Giessen, Germany
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