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Song S, Cheng H, Park J, Kim GD. Relationship between peptides and the change in quality characteristics of beef strip loin (M. longissimus lumborum) and tenderloin (M. psoas major). Food Chem 2024; 430:137036. [PMID: 37536066 DOI: 10.1016/j.foodchem.2023.137036] [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: 02/20/2023] [Revised: 07/23/2023] [Accepted: 07/26/2023] [Indexed: 08/05/2023]
Abstract
Peptides in fresh and aged beef strip loin (M. longissimus lumborum) and tenderloin (M. psoas major) were quantified to investigate the relationship between proteolysis-induced peptides and beef quality characteristics. A total of 409 and 450 peptides were quantified from strip loin and tenderloin, respectively, and found to be significantly correlated to beef quality characteristics. Changes in redness and yellowness were significantly correlated to the peptides derived from G3P, ENOB, and KCRM in both muscles during 14 days of storage. The peptides produced from MYG, ENOB, HBA, PGK1, and TPIS were strongly associated with improved tenderness, while those derived from major myofibrillar proteins, such as MYH1, MYH2, ACTS, and DESM, were associated with changes in tenderloin color. These results improve our understanding of the association between peptides and changes in meat quality during cold storage, indicating that proteolysis-induced peptides can be indicators of the quality characteristics of fresh and aged meat.
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Affiliation(s)
- Sumin Song
- Graduate School of International Agricultural Technology, Seoul National University, Pyeongchang 25354, Republic of Korea
| | - Huilin Cheng
- Graduate School of International Agricultural Technology, Seoul National University, Pyeongchang 25354, Republic of Korea
| | - Junyoung Park
- Graduate School of International Agricultural Technology, Seoul National University, Pyeongchang 25354, Republic of Korea
| | - Gap-Don Kim
- Graduate School of International Agricultural Technology, Seoul National University, Pyeongchang 25354, Republic of Korea; Institutes of Green Bio Science and Technology, Seoul National University, Pyeongchang 25354, Republic of Korea.
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Rocchetti G, Rebecchi A, Maria Lopez C, Dallolio M, Dallolio G, Trevisan M, Lucini L. Impact of axenic and mixed starter cultures on metabolomic and sensory profiles of ripened Italian salami. Food Chem 2023; 402:134182. [DOI: 10.1016/j.foodchem.2022.134182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 08/25/2022] [Accepted: 09/06/2022] [Indexed: 10/14/2022]
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3
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Characterization of a lactic acid bacteria using branched-chain amino acid transaminase and protease from Jinhua Ham and application in myofibrillar protein model. Meat Sci 2022; 191:108852. [DOI: 10.1016/j.meatsci.2022.108852] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 04/01/2022] [Accepted: 05/13/2022] [Indexed: 01/12/2023]
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Yu D, Feng MQ, Sun J. Influence of mixed starters on the degradation of proteins and the formation of peptides with antioxidant activities in dry fermented sausages. Food Control 2021. [DOI: 10.1016/j.foodcont.2020.107743] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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6
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Kong YW, Feng MQ, Sun J. Effects of Lactobacillus plantarum CD101 and Staphylococcus simulans NJ201 on proteolytic changes and bioactivities (antioxidant and antihypertensive activities) in fermented pork sausage. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.109985] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Kim GD, Yun Lee S, Jung EY, Song S, Jin Hur S. Quantitative changes in peptides derived from proteins in beef tenderloin (psoas major muscle) and striploin (longissimus lumborum muscle) during cold storage. Food Chem 2020; 338:128029. [PMID: 32932089 DOI: 10.1016/j.foodchem.2020.128029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Revised: 09/03/2020] [Accepted: 09/03/2020] [Indexed: 12/16/2022]
Abstract
Peptides derived from whole proteins in beef tenderloin (M. psoas major, PM) and striploin (M. longissimus lumborum, LL) associated with meat quality and muscle fiber composition were identified and quantified during 21 days of aging. Peptide quantification revealed 40-43 proteins to be significantly degraded during all aging time, and these were mostly sarcoplasmic proteins. Cooking loss of both muscles was not changed by aging (P > 0.05), whereas Warner-Bratzler shear force and meat color were affected by aging. Sensory tenderness increased in PM after 14 days of aging (P < 0.05). PM had a higher type I fiber content, whereas LL had a higher type IIX fiber content (P < 0.05), resulting in differences in proteolysis during all aging periods tested. These findings improve our understanding of different biochemical and physicochemical changes in aged meat according to the muscle type.
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Affiliation(s)
- Gap-Don Kim
- Graduate School of International Agricultural Technology, Seoul National University, Pyeongchang 25354, Republic of Korea; Institutes of Green Bio Science and Technology, Seoul National University, Pyeongchang 25354, Republic of Korea
| | - Seung Yun Lee
- Department of Animal Science and Technology, Chung-Ang University, Anseong 17546, Republic of Korea
| | - Eun-Young Jung
- Institutes of Green Bio Science and Technology, Seoul National University, Pyeongchang 25354, Republic of Korea
| | - Sumin Song
- Graduate School of International Agricultural Technology, Seoul National University, Pyeongchang 25354, Republic of Korea
| | - Sun Jin Hur
- Department of Animal Science and Technology, Chung-Ang University, Anseong 17546, Republic of Korea.
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8
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Luo Y, Zhao L, Xu J, Su L, Jin Z, Su R, Jin Y. Effect of fermentation and postcooking procedure on quality parameters and volatile compounds of beef jerky. Food Sci Nutr 2020; 8:2316-2326. [PMID: 32405389 PMCID: PMC7215205 DOI: 10.1002/fsn3.1515] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 01/11/2020] [Accepted: 01/17/2020] [Indexed: 12/03/2022] Open
Abstract
In this study, jerky samples were prepared from seasoned beef with and without the addition of starter culture. They were then dried or fried and analyzed to identify the quality parameters and volatile flavor compounds. Samples (starter and control) were divided into drying (inoculated-drying, I-D; noninoculated-drying, N-D) and frying (inoculated-frying, I-F; noninoculated-frying, N-F) groups. Water activity (a w), lightness (L*), and redness (a*) values were significantly affected (p < .001) by the postcooking procedures (drying or frying). Hardness, chewiness, and resilience were significantly lower in the dried groups than in the fried groups (p < .05). The formation of volatile compounds was affected by cooking treatment, with the highest levels observed in the I-F group. After frying, the most abundant flavor compounds in the I-D and N-D groups were terpenes and sulfur-containing compounds, followed by aromatic hydrocarbons, ketones, and alcohols. The most common compounds among all groups were acetoin, D-limonene, anethole, styrene, and tetramethylpyrazine. Overall, the jerky in the I-F group had the best color and tenderness scores among all groups.
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Affiliation(s)
- Yulong Luo
- College of Food Science and EngineeringInner Mongolia Agricultural UniversityHuhhotChina
| | - Lihua Zhao
- College of Food Science and EngineeringInner Mongolia Agricultural UniversityHuhhotChina
| | - Junqiang Xu
- College of Food Science and EngineeringInner Mongolia Agricultural UniversityHuhhotChina
| | - Lin Su
- College of Food Science and EngineeringInner Mongolia Agricultural UniversityHuhhotChina
| | - Zhimin Jin
- The Inner Mongolia Food and Drug AdministrationFood Inspection Test CenterHuhhotChina
| | - Rina Su
- College of Food Science and EngineeringInner Mongolia Agricultural UniversityHuhhotChina
| | - Ye Jin
- College of Food Science and EngineeringInner Mongolia Agricultural UniversityHuhhotChina
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Chernukha I, Kovalev L, Mashentseva N, Kovaleva M, Vostrikova N. Detection of protein aggregation markers in raw meat and finished products. FOODS AND RAW MATERIALS 2019. [DOI: 10.21603/2308-4057-2019-1-118-123] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The effect of animal and plant proteases as well as starters, or starter cultures, on protein aggregates for- mation in raw pork and beef as well as meat products was studied. The proteomic analysis of raw meat revealed that animal proteases – pepsin and trypsin – caused the aggregation of isoform 2 of protein 1 containing 4.5 LIM domains. Vacuum packaged meat showed the same results during storage, while unpacking led to the acceleration of the aggregation process due to autolysis. In addition, mixed aggregated fragments, such as muscle creatine phos- phokinase and glutathione-S-transferase, actin and perilipin, and type II keratin appeared in those samples. Starters with Pediococcus pentosaceus 31 from the Russian National Collection of Industrial Microorganisms (VKPM-8901) caused myoglobin and troponin I aggregation, while the formation of soy proteins aggregates (glycinin G1 and glyci- nin A3B4) was detected in meat products as a result of the autolysis process and the use of cholesterol-lowering star- ters. All in all, proteases which cause protein aggregation may be less effective for raw meat tenderization, whereas the proteins identified may be used as quality biomarkers.
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Affiliation(s)
| | - Leonid Kovalev
- Federal Research Center ‘Fundamentals of Biotechnology’ of the RAS
| | | | - Marina Kovaleva
- Federal Research Center ‘Fundamentals of Biotechnology’ of the RAS
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Sun F, Sun Q, Zhang H, Kong B, Xia X. Purification and biochemical characteristics of the microbial extracellular protease from Lactobacillus curvatus isolated from Harbin dry sausages. Int J Biol Macromol 2019; 133:987-997. [PMID: 31029624 DOI: 10.1016/j.ijbiomac.2019.04.169] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 04/24/2019] [Accepted: 04/24/2019] [Indexed: 01/05/2023]
Abstract
This study investigates the purification and biochemical characteristics of the protease secreted by Lactobacillus curvatus R5, which was isolated from Harbin dry sausages. The optimized fermentation conditions were fermentation time 36 h, initial pH 6 and fermentation temperature 37 °C. An extracellular protease was purified using ammonium sulfate precipitation, ion-exchange layer and gel filtration. Sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE) analysis showed that molecular weight of the purified protease was 45.3 kDa. Protease produced by L. curvatus R5 reached a higher relative protease activity at pH 6, 40 °C, and the purified protease exhibited pH and thermal stability at pH 6 and 40 °C. The microbial protease activity can be inhibited by ethylene diamine tetraacetic acid disodium salt (EDTA). The Vmax and Km of the protease were 53 mg/min and 15.9 mg/mL, respectively. SDS-PAGE reflects the ability of the protease to hydrolyse myofibrillar protein and sarcoplasmic protein, especially on myosin heavy chain, actin, myosin light chain and phosphorylase. The 3D structure and the Ramachandran plot of L. curvatus R5 protease was obtained by homology modelling. The Ramachandran plot analysis revealed that the purified protease was composed of 366 amino acids, and its residues in favoured, allowed, generously allowed and disallowed regions were 84.6%, 11.3%, 3.2% and 0.9% residues, respectively. Molecular docking showed that the substrate actin bound to the protease active site by hydrogen bonding and hydrophobic interaction. This research provides a basis for understanding the enzymatic properties of L. curvatus R5 protease. In conclusion, L. curvatus R5 can be used as a starter culture or protease-producing strain to inoculate Harbin dry sausages.
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Affiliation(s)
- Fangda Sun
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Qinxiu Sun
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Huan Zhang
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Baohua Kong
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China.
| | - Xiufang Xia
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China.
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11
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Pasini F, Soglia F, Petracci M, Caboni MF, Marziali S, Montanari C, Gardini F, Grazia L, Tabanelli G. Effect of Fermentation with Different Lactic Acid Bacteria Starter Cultures on Biogenic Amine Content and Ripening Patterns in Dry Fermented Sausages. Nutrients 2018; 10:nu10101497. [PMID: 30322117 PMCID: PMC6213744 DOI: 10.3390/nu10101497] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 10/10/2018] [Accepted: 10/11/2018] [Indexed: 01/12/2023] Open
Abstract
In the present study, two different diameter (small and large) Milano-type dry fermented sausages were industrially produced to evaluate the effect of two different LAB starter cultures (Lactobacillus sakei and Pediococcus pentosaceus) on biogenic amines (BAs) content, proteolysis, and lipolysis taking place during both fermentation and ripening. With regard to BAs, putrescine and tyramine were mostly found in fermented sausages having large diameter and those inoculated with P. pentosaceus/S. xylosus exhibited significantly higher accumulation of these compounds. Overall, the small size sausages showed a more pronounced proteolysis taking place during processing. In addition, aside from the distinctive electrophoretic bands detected with both starter cultures, a more pronounced proteolysis and a faster protein hydrolysis was observed in salami inoculated with P. pentosaceus/S. xylosus. As for lipolysis, a significantly higher amount of diacylglycerols was observed at the end of ripening in the sausages inoculated with L. sakei/S. xylosus, which concurrently exhibited an increased D32, D34, and D36 series. The results of the present study confirms profound differences in BAs concentration, proteolysis, and lipolysis. These findings are strictly dependent on the starter cultures, which demonstrates that the choice of an appropriate starter optimized for peculiar products and processes should be the key factor to improve safety and quality features of traditional fermented sausages.
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Affiliation(s)
- Federica Pasini
- Centro Interdipartimentale di Ricerca Industriale Agroalimentare, Alma Mater Studiorum, Università di Bologna, Sede di Cesena, Piazza Goidanich 60, 47521 Cesena, Italy.
| | - Francesca Soglia
- Dipartimento di Scienze e Tecnologie Agro-alimentari, Alma Mater Studiorum, Università di Bologna, Sede di Cesena, Piazza Goidanich 60, 47521 Cesena, Italy.
| | - Massimiliano Petracci
- Centro Interdipartimentale di Ricerca Industriale Agroalimentare, Alma Mater Studiorum, Università di Bologna, Sede di Cesena, Piazza Goidanich 60, 47521 Cesena, Italy.
- Dipartimento di Scienze e Tecnologie Agro-alimentari, Alma Mater Studiorum, Università di Bologna, Sede di Cesena, Piazza Goidanich 60, 47521 Cesena, Italy.
| | - Maria Fiorenza Caboni
- Centro Interdipartimentale di Ricerca Industriale Agroalimentare, Alma Mater Studiorum, Università di Bologna, Sede di Cesena, Piazza Goidanich 60, 47521 Cesena, Italy.
- Dipartimento di Scienze e Tecnologie Agro-alimentari, Alma Mater Studiorum, Università di Bologna, Sede di Cesena, Piazza Goidanich 60, 47521 Cesena, Italy.
| | - Sara Marziali
- Dipartimento di Agricoltura, Ambiente e Alimenti, Università degli Studi del Molise, via De Sanctis snc, 86100 Campobasso, Italy.
| | - Chiara Montanari
- Centro Interdipartimentale di Ricerca Industriale Agroalimentare, Alma Mater Studiorum, Università di Bologna, Sede di Cesena, Piazza Goidanich 60, 47521 Cesena, Italy.
| | - Fausto Gardini
- Centro Interdipartimentale di Ricerca Industriale Agroalimentare, Alma Mater Studiorum, Università di Bologna, Sede di Cesena, Piazza Goidanich 60, 47521 Cesena, Italy.
- Dipartimento di Scienze e Tecnologie Agro-alimentari, Alma Mater Studiorum, Università di Bologna, Sede di Cesena, Piazza Goidanich 60, 47521 Cesena, Italy.
| | - Luigi Grazia
- Dipartimento di Scienze e Tecnologie Agro-alimentari, Alma Mater Studiorum, Università di Bologna, Sede di Bologna, Viale Fanin 44, 40127 Bologna, Italy.
| | - Giulia Tabanelli
- Centro Interdipartimentale di Ricerca Industriale Agroalimentare, Alma Mater Studiorum, Università di Bologna, Sede di Cesena, Piazza Goidanich 60, 47521 Cesena, Italy.
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Tang KX, Shi T, Gänzle M. Effect of starter cultures on taste-active amino acids and survival of pathogenic Escherichia coli in dry fermented beef sausages. Eur Food Res Technol 2018. [DOI: 10.1007/s00217-018-3130-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Orihuel A, Bonacina J, Vildoza MJ, Bru E, Vignolo G, Saavedra L, Fadda S. Biocontrol of Listeria monocytogenes in a meat model using a combination of a bacteriocinogenic strain with curing additives. Food Res Int 2018; 107:289-296. [DOI: 10.1016/j.foodres.2018.02.043] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Revised: 02/06/2018] [Accepted: 02/14/2018] [Indexed: 02/07/2023]
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A peptidomic approach of meat protein degradation in a low-sodium fermented sausage model using autochthonous starter cultures. Food Res Int 2018; 109:368-379. [PMID: 29803462 DOI: 10.1016/j.foodres.2018.04.042] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 04/16/2018] [Accepted: 04/20/2018] [Indexed: 12/30/2022]
Abstract
Fermented sausage technology is currently compromised in decreasing the addition of NaCl. Use of starter cultures with peptidogenic potential could be a valuable strategy that can mask or hide off flavors produced by the use of NaCl substituents. In the present work, the peptidogenic potential of four lactic acid bacteria species was evaluated in a low-sodium beaker sausage (BS) model. Using a peptidomic approach, a total of 86 low molecular weight (LMW) peptides were accurately identified, mostly derived from myofibrillar proteins, especially actin, which generated 53 peptides. The BS inoculated with L. curvatus CRL705 generated 56 LMW peptides, followed by Enterococcus (E.) mundtii CRL35 with 43 peptides. In addition, BS inoculated with Lactobacillus (L.) plantarum and with L. sakei produced higher amino acid amounts over time as compared to the rest of BS models, highlighting the importance of both, time and sample effect on the overall free amino acid generation. The presence of each LAB strain in BS models generated a unique profile of small peptides and amino acids that could serve as a distinctive biochemical trait to differentiate specific fermented products. According to these results, E. mundtii and L. sakei, which are compatible between them, are proposed as the most efficiently adapted to low-sodium conditions. The use of selected strains during the processing of low-sodium fermented sausages could have a positive effect on the production of small peptides and free amino acids.
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Stavropoulou DA, Van Reckem E, De Smet S, De Vuyst L, Leroy F. The narrowing down of inoculated communities of coagulase-negative staphylococci in fermented meat models is modulated by temperature and pH. Int J Food Microbiol 2018; 274:52-59. [PMID: 29551445 DOI: 10.1016/j.ijfoodmicro.2018.03.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 02/27/2018] [Accepted: 03/11/2018] [Indexed: 11/12/2022]
Abstract
Coagulase-negative staphylococci (CNS) are involved in colour and flavour formation of fermented meats. Their communities are established either spontaneously, as in some artisan-type products, or using a starter culture. The latter usually consists of Staphylococcus carnosus and/or Staphylococcus xylosus strains, although strains from other CNS species also have potential for application. However, it is not entirely clear how the fitness of alternative starter cultures within a fermented meat matrix compares to conventional ones and how this may be affected by processing conditions. Therefore, the aim of this study was to assess the influence of two key processing conditions, namely temperature and acidity, on the competitiveness of a cocktail of five different strains of CNS belonging to species that are potentially important for meat fermentation (Staphylococcus xylosus 2S7-2, S. carnosus 833, Staphylococcus epidermidis ATCC 12228, Staphylococcus equorum DFL-S19, and Staphylococcus saprophyticus FPS1). To this end, fermented meat models consisting of cured meat batters with initial pH values of 5.3, 5.5, or 5.7 were inoculated with these strains, stuffed in containers, and incubated at 23, 30, or 37 °C. Both the pH level and the temperature influenced the composition of the CNS communities, giving a competitive advantage to the best adapted species. Staphylococcus xylosus preferred low temperature and mild acidity, whereas an elevated temperature selected for S. epidermidis and a low pH for S. carnosus. Under the conditions tested, S. saprophyticus and S. equorum were outcompeted by the three other CNS species. Hence, CNS communities in fermented meats are not only established based on the initial presence of specific species in the meat batter but also by their subsequent adaptation to the processing conditions during fermentation, potentially overruling the use of starter cultures.
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Affiliation(s)
- Despoina Angeliki Stavropoulou
- Research Group of Industrial Microbiology and Food Biotechnology (IMDO), Faculty of Sciences and Bioengineering Sciences, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium
| | - Emiel Van Reckem
- Research Group of Industrial Microbiology and Food Biotechnology (IMDO), Faculty of Sciences and Bioengineering Sciences, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium
| | - Stefaan De Smet
- Laboratory for Animal Nutrition and Animal Product Quality, Department of Animal Production, Ghent University, Ghent, Belgium
| | - Luc De Vuyst
- Research Group of Industrial Microbiology and Food Biotechnology (IMDO), Faculty of Sciences and Bioengineering Sciences, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium
| | - Frédéric Leroy
- Research Group of Industrial Microbiology and Food Biotechnology (IMDO), Faculty of Sciences and Bioengineering Sciences, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium.
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Berardo A, Devreese B, De Maere H, Stavropoulou D, Van Royen G, Leroy F, De Smet S. Actin proteolysis during ripening of dry fermented sausages at different pH values. Food Chem 2017; 221:1322-1332. [DOI: 10.1016/j.foodchem.2016.11.023] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 10/27/2016] [Accepted: 11/03/2016] [Indexed: 12/23/2022]
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Celano G, De Angelis M, Minervini F, Gobbetti M. Different Flour Microbial Communities Drive to Sourdoughs Characterized by Diverse Bacterial Strains and Free Amino Acid Profiles. Front Microbiol 2016; 7:1770. [PMID: 27877165 PMCID: PMC5099235 DOI: 10.3389/fmicb.2016.01770] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Accepted: 10/21/2016] [Indexed: 11/21/2022] Open
Abstract
This work aimed to investigate whether different microbial assemblies in flour may influence the microbiological and biochemical characteristics of traditional sourdough. To reach this purpose, members of lactic acid bacteria, enterobacteria, and yeasts were isolated from durum wheat flour. Secondly, the isolated microorganisms (Pediococcus pentosaceus, Saccharomyces cerevisiae, Pantoea agglomerans, and Escherichia hermannii) were inoculated in doughs prepared with irradiated flour (gamma rays at 10 kGy), so that eight different microbial assemblies were obtained. Two non-inoculated controls were prepared, one of which (C-IF) using irradiated flour and the other (C) using non-irradiated flour. As shown by plate counts, irradiation of flour caused total inactivation of yeasts and a decrease of all the other microbial populations. However, acidification occurred also in the dough C-IF, due to metabolic activity of P. pentosaceus that had survived irradiation. After six fermentations, P. pentosaceus was the dominant lactic acid bacterium species in all the sourdoughs produced with irradiated flour (IF). Yet, IF-based sourdoughs broadly differed from each other in terms of strains of P. pentosaceus, probably due to the different microorganisms initially inoculated. Quantitative and qualitative differences of free amino acids concentration were found among the sourdoughs, possibly because of different microbial communities. In addition, as shown by culture-independent analysis (16S metagenetics), irradiation of flour lowered and modified microbial diversity of sourdough ecosystem.
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Affiliation(s)
- Giuseppe Celano
- Dipartimento di Scienze del Suolo, della Pianta e degli Alimenti, Università degli Studi di Bari Aldo Moro Bari, Italy
| | - Maria De Angelis
- Dipartimento di Scienze del Suolo, della Pianta e degli Alimenti, Università degli Studi di Bari Aldo Moro Bari, Italy
| | - Fabio Minervini
- Dipartimento di Scienze del Suolo, della Pianta e degli Alimenti, Università degli Studi di Bari Aldo Moro Bari, Italy
| | - Marco Gobbetti
- Dipartimento di Scienze del Suolo, della Pianta e degli Alimenti, Università degli Studi di Bari Aldo Moro Bari, Italy
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18
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Iwaniak A, Minkiewicz P, Darewicz M, Sieniawski K, Starowicz P. BIOPEP database of sensory peptides and amino acids. Food Res Int 2016; 85:155-161. [PMID: 29544830 DOI: 10.1016/j.foodres.2016.04.031] [Citation(s) in RCA: 105] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Revised: 04/22/2016] [Accepted: 04/24/2016] [Indexed: 11/29/2022]
Abstract
Peptides and amino acids belong to compounds that influence the taste of foods. The aim of this study was to develop a database of sensory peptides and amino acids. Information about the taste of the analyzed compounds was obtained from sensory studies described in the literature. The database of sensory peptides and amino acids has identical structure to the BIOPEP database of biologically active peptides. The information about sensory peptides and amino acids was inserted into the database using standard BIOPEP layouts for bioactive peptides. Information about the biological activity of sensory peptides was obtained from BIOPEP and other databases. The information annotated in the BIOPEP database of sensory peptides and amino acids includes: sequence written in a one-letter code, information about taste, reference, structure written with the use of chemical codes (SMILES, InChI and InChIKey), bioactivity data (mainly inhibition of proteolytic enzymes), if applicable, and ID numbers from other biological and chemical databases. The database contains tools for determining the location of peptides in protein sequences (profiles of potential sensory activity), comparing protein sequences as precursors of sensory peptides based on the frequency of sensory fragments as a quantitative descriptor, simulating proteolysis and calculating novel parameters for quantitative description of simulated proteolysis. The BIOPEP database of sensory peptides and amino acids is available at http://www.uwm.edu.pl/biochemia/index.php/pl/biopep. It is an open access resource that does not require user registration.
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Affiliation(s)
- Anna Iwaniak
- University of Warmia and Mazury in Olsztyn, Department of Food Biochemistry, Plac Cieszyński 1, 10-726 Olsztyn, Poland
| | - Piotr Minkiewicz
- University of Warmia and Mazury in Olsztyn, Department of Food Biochemistry, Plac Cieszyński 1, 10-726 Olsztyn, Poland.
| | - Małgorzata Darewicz
- University of Warmia and Mazury in Olsztyn, Department of Food Biochemistry, Plac Cieszyński 1, 10-726 Olsztyn, Poland
| | - Krzysztof Sieniawski
- Enter Krzysztof Sieniawski, ul. Stanisława Żurawskiego 17/19, 10-689 Olsztyn, Poland
| | - Piotr Starowicz
- University of Warmia and Mazury in Olsztyn, Department of Food Biochemistry, Plac Cieszyński 1, 10-726 Olsztyn, Poland
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