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Varga-Visi É, Jócsák I, Kozma V, Lóki K, Ali O, Szabó A. Effects of Surface Treatment with Thymol on the Lipid Oxidation Processes, Fatty Acid Profile and Color of Sliced Salami during Refrigerated Storage. Foods 2022; 11:foods11233917. [PMID: 36496725 PMCID: PMC9737663 DOI: 10.3390/foods11233917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 11/29/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022] Open
Abstract
The oxidation of unsaturated fatty acids and the adverse transformation of pigments from meat and spices are the primary causes of chemical degradation in processed meat products. Thymol is found in a variety of plant extracts that have been proven to effectively inhibit or slow down oxidative processes. The objective of our study was to determine whether thymol treatment of the surface of sliced paprika salami could be applied to inhibit lipid oxidation and color change during refrigerated storage. During eight weeks of storage, the malondialdehyde (MDA) levels and the ratios of saturated fatty acids (SFAs), monounsaturated fatty acids (MUFAs), polyunsaturated fatty acids (PUFAs), and n6/n3 in thymol-treated salami remained unchanged (p ≥ 0.05), whereas in the controls, the MDA levels increased by approximately twelvefold and the ratio of SFAs in the lipid fraction increased (p < 0.001), while the ratio of PUFAs decreased (p < 0.001). The application of thymol prevented decrease in yellowness (b*) of the slices and reduced decreases in redness (a*) and brightness (chroma).
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Affiliation(s)
- Éva Varga-Visi
- Department of Physiology and Animal Health, Institute of Physiology and Nutrition, Kaposvár Campus, Hungarian University of Agriculture and Life Sciences, Guba Sándor Street 40, H-7400 Kaposvár, Hungary
- Correspondence:
| | - Ildikó Jócsák
- Department of Agronomy, Institute of Agronomy, Kaposvár Campus, Hungarian University of Agriculture and Life Sciences, Guba Sándor Street 40, H-7400 Kaposvár, Hungary
| | - Vanda Kozma
- Kaposvár Campus, Hungarian University of Agriculture and Life Sciences, Guba Sándor Street 40, H-7400 Kaposvár, Hungary
| | - Katalin Lóki
- Department of Chemistry, Institute of Mathematics and Basic Science, Kaposvár Campus, Hungarian University of Agriculture and Life Sciences, Guba Sándor Street 40, H-7400 Kaposvár, Hungary
| | - Omeralfaroug Ali
- Agribiotechnology and Precision Breeding for Food Security National Laboratory, Department of Physiology and Animal Health, Institute of Physiology and Nutrition, Hungarian University of Agriculture and Life Sciences, Guba Sándor Street 40, H-7400 Kaposvár, Hungary
| | - András Szabó
- Department of Physiology and Animal Health, Institute of Physiology and Nutrition, Kaposvár Campus, Hungarian University of Agriculture and Life Sciences, Guba Sándor Street 40, H-7400 Kaposvár, Hungary
- Agribiotechnology and Precision Breeding for Food Security National Laboratory, Department of Physiology and Animal Health, Institute of Physiology and Nutrition, Hungarian University of Agriculture and Life Sciences, Guba Sándor Street 40, H-7400 Kaposvár, Hungary
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Varga-Visi É, Kozma V, Szabó A. Correlation between CIELAB colour coordinates and malondialdehyde eqiuvalents in sausage with paprika stored under refrigerated conditions. AAlim 2021. [DOI: 10.1556/066.2021.00118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Abstract
Sensory properties of foods mainly affect purchasing decisions. In case of sausages, deterioration of pigments of meat and spices cause discolouration, while lipid oxidation leads to the formation of off-odours, and these two processes are connected. Lipid oxidation promotes the conversion of pigments, while the formation of metmyoglobin accelerates lipid oxidation. The scope of the study was to investigate the relationship between the amount of malondialdehyde equivalents (MDA) and CIELAB colour coordinates in a Hungarian sausage with paprika, sliced and stored under refrigerated conditions for 10 weeks. We detected negative correlation (P < 0.001) between the MDA-level and a* and b*; and positive correlation (P < 0.001) between the MDA-level and L*. The observed correlation between MDA level and colour coordinates supports the assumption that the oxidation of lipids and pigments are interrelated in the case of sausage with paprika.
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Affiliation(s)
- É. Varga-Visi
- Department of Physiology and Animal Health, Institute of Physiology and Nutrition, Hungarian University of Agriculture and Life Sciences Kaposvár Campus, Guba S. u. 40, H-7400, Kaposvár, Hungary
| | - V. Kozma
- Department of Physiology and Animal Health, Institute of Physiology and Nutrition, Hungarian University of Agriculture and Life Sciences Kaposvár Campus, Guba S. u. 40, H-7400, Kaposvár, Hungary
| | - A. Szabó
- Department of Physiology and Animal Health, Institute of Physiology and Nutrition, Hungarian University of Agriculture and Life Sciences Kaposvár Campus, Guba S. u. 40, H-7400, Kaposvár, Hungary
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Stevens T, Ekholm K, Gränse M, Lindahl M, Kozma V, Jungar C, Ottosson T, Falk-Håkansson H, Churg A, Wright JL, Lal H, Sanfridson A. AZD9668: pharmacological characterization of a novel oral inhibitor of neutrophil elastase. J Pharmacol Exp Ther 2011; 339:313-20. [PMID: 21791628 DOI: 10.1124/jpet.111.182139] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
N-{[5-(methanesulfonyl)pyridin-2-yl]methyl}-6-methyl-5-(1-methyl-1H-pyrazol-5-yl)-2-oxo-1-[3-(trifluoromethyl)phenyl]-1,2-dihydropyridine-3-carboxamide (AZD9668) is a novel, oral inhibitor of neutrophil elastase (NE), an enzyme implicated in the signs, symptoms, and disease progression in NE-driven respiratory diseases such as bronchiectasis and chronic obstructive pulmonary disease via its role in the inflammatory process, mucus overproduction, and lung tissue damage. In vitro and in vivo experiments were done to evaluate the binding kinetics, potency, and selectivity of AZD9668, its effects in whole-blood and cell-based assays, and its efficacy in models of lung inflammation and damage. In contrast to earlier NE inhibitors, the interaction between AZD9668 and NE was rapidly reversible. AZD9668 was also highly selective for NE over other neutrophil-derived serine proteases. In cell-based assays, AZD9668 inhibited plasma NE activity in zymosan-stimulated whole blood. In isolated human polymorphonuclear cells, AZD9668 inhibited NE activity on the surface of stimulated cells and in the supernatant of primed, stimulated cells. AZD9668 showed good crossover potency to NE from other species. Oral administration of AZD9668 to mice or rats prevented human NE-induced lung injury, measured by lung hemorrhage, and an increase in matrix protein degradation products in bronchoalveolar lavage (BAL) fluid. In an acute smoke model, AZD9668 reduced the inflammatory response to cigarette smoke as indicated by a reduction in BAL neutrophils and interleukin-1β. Finally, AZD9668 prevented airspace enlargement and small airway wall remodeling in guinea pigs in response to chronic tobacco smoke exposure whether dosed therapeutically or prophylactically. In summary, AZD9668 has the potential to reduce lung inflammation and the associated structural and functional changes in human diseases.
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Hartmann E, Németh A, Juharosi G, Lénárd Z, Deák PÁ, Kozma V, Nagy P, Gerlei Z, Fehérvári I, Nemes B, Görög D, Fazakas J, Kóbori L, Doros A. Downstaging of hepatocellular carcinoma with radiofrequency ablation on the Hungarian liver transplantation waiting list — Early results and learned lessons. Interv Med Appl Sci 2009. [DOI: 10.1556/imas.1.2009.1.6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Abstract
Hepatocellular carcinoma, which has developed in liver cirrhosis is a disease where liver transplantation can provide a cure both for the tumour and the underlying liver damage. However, patients can only be transplanted when the tumour number and size do not exceed the Milan criteria. Tumour ablation methods — such as radiofrequency ablation — can provide a chance to make the patient eligible for transplantation. Among the 416 Hungarian liver transplanted patients there are 6 who had received different types of ablative therapy as bridging therapy in different institutions. On the basis of analysis of the patients' data we created a guideline for the treatment of cirrhotic patients with hepatocellular carcinoma with the aim of developing a uniform Hungarian approach.
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Affiliation(s)
- E. Hartmann
- 1 Clinic for Transplantation and Surgery, Semmelweis University, Budapest, Hungary
- 2 Baross u. 23–25, H-1082, Budapest, Hungary
| | - A. Németh
- 1 Clinic for Transplantation and Surgery, Semmelweis University, Budapest, Hungary
| | - Gy. Juharosi
- 1 Clinic for Transplantation and Surgery, Semmelweis University, Budapest, Hungary
| | - Zs. Lénárd
- 1 Clinic for Transplantation and Surgery, Semmelweis University, Budapest, Hungary
| | - P. Á. Deák
- 1 Clinic for Transplantation and Surgery, Semmelweis University, Budapest, Hungary
| | - V. Kozma
- 1 Clinic for Transplantation and Surgery, Semmelweis University, Budapest, Hungary
| | - P. Nagy
- 1 Clinic for Transplantation and Surgery, Semmelweis University, Budapest, Hungary
| | - Zs. Gerlei
- 1 Clinic for Transplantation and Surgery, Semmelweis University, Budapest, Hungary
| | - I. Fehérvári
- 1 Clinic for Transplantation and Surgery, Semmelweis University, Budapest, Hungary
| | - B. Nemes
- 1 Clinic for Transplantation and Surgery, Semmelweis University, Budapest, Hungary
| | - D. Görög
- 1 Clinic for Transplantation and Surgery, Semmelweis University, Budapest, Hungary
| | - J. Fazakas
- 1 Clinic for Transplantation and Surgery, Semmelweis University, Budapest, Hungary
| | - L. Kóbori
- 1 Clinic for Transplantation and Surgery, Semmelweis University, Budapest, Hungary
| | - A. Doros
- 1 Clinic for Transplantation and Surgery, Semmelweis University, Budapest, Hungary
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