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Tarantini A, Crupi P, Ramires FA, D'Amico L, Romano G, Blando F, Branco P, Clodoveo ML, Corbo F, Cardinali A, Bleve G. Study of the effects of pasteurization and selected microbial starters on functional traits of fermented table olives. Food Microbiol 2024; 122:104537. [PMID: 38839217 DOI: 10.1016/j.fm.2024.104537] [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: 12/06/2023] [Revised: 04/05/2024] [Accepted: 04/09/2024] [Indexed: 06/07/2024]
Abstract
Table olives are one of the most known fruit consumed as fermented food, being a fundamental component of the Mediterranean diet. Their production and consumption continue to increase globally and represent an important economic source for the producing countries. One of the most stimulating challenges for the future is the modernization of olive fermentation process. Besides the demand for more reproducible and safer production methods that could be able to reduce product losses and potential risks, producers and consumers are increasingly attracted by the final product characteristics and properties on human health. In this study, the contribution of microbial starters to table olives was fully described in terms of specific enzymatic and microbiological profiles, nutrient components, fermentation-derived compounds, and content of bioactive compounds. The use of microbial starters from different sources was tested considering their technological features and potential ability to improve the functional traits of fermented black table olives. For each fermentation assay, the effects of controlled temperature (kept at 20 °C constantly) versus not controlled environmental conditions (oscillating between 7 and 17 °C), as well as the consequences of the pasteurization treatment were tested on the final products. Starter-driven fermentation strategies seemed to increase both total phenolic content and total antioxidant activity. Herein, among all the tested microbial starters, we provide data indicating that two bacterial strains (Leuconostoc mesenteroides KT 5-1 and Lactiplantibacillus plantarum BC T3-35), and two yeast strains (Saccharomyces cerevisiae 10A and Debaryomyces hansenii A15-44) were the better ones related to enzyme activities, total phenolic content and antioxidant activity. We also demonstrated that the fermentation of black table olives under not controlled environmental temperature conditions was more promising than the controlled level of 20 °C constantly in terms of technological and functional properties considered in this study. Moreover, we confirmed that the pasteurization process had a role in enhancing the levels of antioxidant compounds.
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Affiliation(s)
- Annamaria Tarantini
- Consiglio Nazionale Delle Ricerche - Istituto di Scienze Delle Produzioni Alimentari, Unità Operativa di Lecce, 73100, Lecce, Italy; University of Bari, Soil, Plant and Food Science Department (Di.S.S.P.A), Bari, Italy
| | - Pasquale Crupi
- Dipartimento Interdisciplinare di Medicina, Università Degli Studi Aldo Moro Bari, Piazza Giulio Cesare 11, 70124, Bari, Italy
| | - Francesca Anna Ramires
- Consiglio Nazionale Delle Ricerche - Istituto di Scienze Delle Produzioni Alimentari, Unità Operativa di Lecce, 73100, Lecce, Italy
| | - Leone D'Amico
- Consiglio Nazionale Delle Ricerche - Istituto di Scienze Delle Produzioni Alimentari, Unità Operativa di Lecce, 73100, Lecce, Italy
| | - Giuseppe Romano
- Consiglio Nazionale Delle Ricerche - Istituto di Scienze Delle Produzioni Alimentari, Unità Operativa di Lecce, 73100, Lecce, Italy
| | - Federica Blando
- Consiglio Nazionale Delle Ricerche - Istituto di Scienze Delle Produzioni Alimentari, Unità Operativa di Lecce, 73100, Lecce, Italy
| | | | - Maria Lisa Clodoveo
- Dipartimento Interdisciplinare di Medicina, Università Degli Studi Aldo Moro Bari, Piazza Giulio Cesare 11, 70124, Bari, Italy
| | - Filomena Corbo
- Dipartimento di Farmacia-Scienze Del Farmaco, Università Degli Studi di Bari, Campus Universitario E. Quagliarello Via Orabona, 4-70125, Bari, Italy
| | - Angela Cardinali
- Consiglio Nazionale Delle Ricerche - Istituto di Scienze Delle Produzioni Alimentari, Bari, 70126, Italy
| | - Gianluca Bleve
- Consiglio Nazionale Delle Ricerche - Istituto di Scienze Delle Produzioni Alimentari, Unità Operativa di Lecce, 73100, Lecce, Italy.
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2
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Tsoungos A, Pemaj V, Slavko A, Kapolos J, Papadelli M, Papadimitriou K. The Rising Role of Omics and Meta-Omics in Table Olive Research. Foods 2023; 12:3783. [PMID: 37893676 PMCID: PMC10606081 DOI: 10.3390/foods12203783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 10/05/2023] [Accepted: 10/09/2023] [Indexed: 10/29/2023] Open
Abstract
Table olives are often the result of fermentation, a process where microorganisms transform raw materials into the final product. The microbial community can significantly impact the organoleptic characteristics and safety of table olives, and it is influenced by various factors, including the processing methods. Traditional culture-dependent techniques capture only a fraction of table olives' intricate microbiota, prompting a shift toward culture-independent methods to address this knowledge gap. This review explores recent advances in table olive research through omics and meta-omics approaches. Genomic analysis of microorganisms isolated from table olives has revealed multiple genes linked to technological and probiotic attributes. An increasing number of studies concern metagenomics and metabolomics analyses of table olives. The former offers comprehensive insights into microbial diversity and function, while the latter identifies aroma and flavor determinants. Although proteomics and transcriptomics studies remain limited in the field, they have the potential to reveal deeper layers of table olives' microbiome composition and functionality. Despite the challenges associated with implementing multi-omics approaches, such as the reliance on advanced bioinformatics tools and computational resources, they hold the promise of groundbreaking advances in table olive processing technology.
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Affiliation(s)
- Anastasios Tsoungos
- Department of Food Science and Technology, University of the Peloponnese, 24100 Kalamata, Greece; (A.T.); (V.P.); (A.S.); (J.K.); (M.P.)
| | - Violeta Pemaj
- Department of Food Science and Technology, University of the Peloponnese, 24100 Kalamata, Greece; (A.T.); (V.P.); (A.S.); (J.K.); (M.P.)
| | - Aleksandra Slavko
- Department of Food Science and Technology, University of the Peloponnese, 24100 Kalamata, Greece; (A.T.); (V.P.); (A.S.); (J.K.); (M.P.)
| | - John Kapolos
- Department of Food Science and Technology, University of the Peloponnese, 24100 Kalamata, Greece; (A.T.); (V.P.); (A.S.); (J.K.); (M.P.)
| | - Marina Papadelli
- Department of Food Science and Technology, University of the Peloponnese, 24100 Kalamata, Greece; (A.T.); (V.P.); (A.S.); (J.K.); (M.P.)
| | - Konstantinos Papadimitriou
- Laboratory of Food Quality Control and Hygiene, Department of Food Science and Human Nutrition, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece
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3
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Mougiou N, Tsoureki A, Didos S, Bouzouka I, Michailidou S, Argiriou A. Microbial and Biochemical Profile of Different Types of Greek Table Olives. Foods 2023; 12:foods12071527. [PMID: 37048348 PMCID: PMC10094447 DOI: 10.3390/foods12071527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 03/23/2023] [Accepted: 03/28/2023] [Indexed: 04/07/2023] Open
Abstract
Analysis of table olives microbiome using next-generation sequencing has enriched the available information about the microbial community composition of this popular fermented food. In this study, 16S and 18S rRNA sequencing was performed on table olives of five Greek popular cultivars, Halkidikis, Thassou, Kalamon, Amfissis, and Konservolia, fermented either by Greek style (in brine or salt-drying) or by Spanish style, in order to evaluate their microbial communities. Moreover, analytical methods were used to evaluate their biochemical properties. The prevailing bacterial species of all olives belonged to Lactobacillaceae, Leuconostocaceae, and Erwiniaceae families, while the most abundant yeasts were of the Pichiaceae family. Principal coordinates analysis showed a clustering of samples cured by salt-drying and of samples stored in brine, regardless of their cultivar. The biochemical evaluation of total phenol content, antioxidant activity, hydroxytyrosol, oleuropein, oleocanthal, and oleacein showed that salt-dried olives had low amounts of hydroxytyrosol, while Spanish-style green olives had the highest amounts of oleocanthal. All the other values exhibited various patterns, implying that more than one factor affects the biochemical identity of the final product. The protocols applied in this study can provide useful insights for the final product, both for the producers and the consumers.
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Affiliation(s)
- Niki Mougiou
- Institute of Applied Biosciences, Centre for Research and Technology Hellas, Thermi, 57001 Thessaloniki, Greece
| | - Antiopi Tsoureki
- Institute of Applied Biosciences, Centre for Research and Technology Hellas, Thermi, 57001 Thessaloniki, Greece
| | - Spyros Didos
- Institute of Applied Biosciences, Centre for Research and Technology Hellas, Thermi, 57001 Thessaloniki, Greece
- Department of Food Science and Nutrition, University of the Aegean, Myrina, 81400 Lemnos, Greece
| | - Ioanna Bouzouka
- Institute of Applied Biosciences, Centre for Research and Technology Hellas, Thermi, 57001 Thessaloniki, Greece
- Department of Medicine, Aristotle University of Thessaloniki, 54154 Thessaloniki, Greece
| | - Sofia Michailidou
- Institute of Applied Biosciences, Centre for Research and Technology Hellas, Thermi, 57001 Thessaloniki, Greece
| | - Anagnostis Argiriou
- Institute of Applied Biosciences, Centre for Research and Technology Hellas, Thermi, 57001 Thessaloniki, Greece
- Department of Food Science and Nutrition, University of the Aegean, Myrina, 81400 Lemnos, Greece
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4
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Zhi Ling RL, Kong LK, Lim LH, Teo SS, Ng HS, Lan JCW, Khoo KS. Identification of microorganisms from fermented biowaste and the potential for wastewater treatment. ENVIRONMENTAL RESEARCH 2023; 218:115013. [PMID: 36495970 DOI: 10.1016/j.envres.2022.115013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 11/24/2022] [Accepted: 12/06/2022] [Indexed: 06/17/2023]
Abstract
Food loss or waste is a far-reaching problem and has indeed become a worrying issue that is growing at an alarming rate. Fruits and vegetables are lost or wasted at the highest rate among the composition of food waste. Furthermore, the world is progressing toward sustainable development; hence, an efficient approach to valorise fruit and vegetable waste (FVW) is necessary. A simple phenotypic characterisation of microbiota isolated from the fermented FVW was conducted, and its effectiveness toward wastewater treatment was investigated. Presumptive identification suggested that yeast is dominant in this study, accounting for 85% of total isolates. At the genus level, the enriched medium's microbial community consists of Saccharomyces, Bacillus and Candida. Ammonium in the wastewater can enhance certain bacteria to grow, such as lactic acid bacteria, resulting in decreased NH4+ concentration at the end of the treatment to 0.5 mg/L. In addition, the fermented biowaste could reduce PO43- by 90% after the duration of treatment. Overall, FVW is a valuable microbial resource, and the microbial population enables a reduction in organic matter such as NH4+ and PO43-. This study helps explore the function and improve the effectiveness of utilising biowaste by understanding the microorganisms responsible for producing eco-enzyme.
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Affiliation(s)
- Regina Leong Zhi Ling
- Faculty of Applied Sciences, UCSI University, UCSI Heights, 56000 Cheras, Kuala Lumpur, Malaysia
| | - Lai Kuan Kong
- Faculty of Applied Sciences, UCSI University, UCSI Heights, 56000 Cheras, Kuala Lumpur, Malaysia
| | - Lai Huat Lim
- Faculty of Applied Sciences, UCSI University, UCSI Heights, 56000 Cheras, Kuala Lumpur, Malaysia
| | - Swee Sen Teo
- Faculty of Applied Sciences, UCSI University, UCSI Heights, 56000 Cheras, Kuala Lumpur, Malaysia
| | - Hui-Suan Ng
- Centre for Research and Graduate Studies, University of Cyberjaya, Persiaran Bestari, 63000 Cyberjaya, Selangor, Malaysia.
| | - John Chi-Wei Lan
- Biorefinery and Bioprocess Engineering Laboratory, Department of Chemical Engineering and Materials Science, Yuan Ze University, Taoyuan, Taiwan; Graduate School of Biotechnology and Bioengineering, Yuan Ze University, Taoyuan, Taiwan
| | - Kuan Shiong Khoo
- Centre for Research and Graduate Studies, University of Cyberjaya, Persiaran Bestari, 63000 Cyberjaya, Selangor, Malaysia; Department of Chemical Engineering and Materials Science, Yuan Ze University, Taoyuan, Taiwan.
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5
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Benítez-Cabello A, Ramiro-García J, Romero-Gil V, Medina E, Arroyo-López FN. Fungal biodiversity in commercial table olive packages. Food Microbiol 2022; 107:104082. [DOI: 10.1016/j.fm.2022.104082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 05/19/2022] [Accepted: 06/15/2022] [Indexed: 11/29/2022]
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6
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What Is Candida Doing in My Food? A Review and Safety Alert on Its Use as Starter Cultures in Fermented Foods. Microorganisms 2022; 10:microorganisms10091855. [PMID: 36144457 PMCID: PMC9502980 DOI: 10.3390/microorganisms10091855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 09/02/2022] [Accepted: 09/07/2022] [Indexed: 12/02/2022] Open
Abstract
The use of yeasts as starter cultures was boosted with the emergence of large-scale fermentations in the 20th century. Since then, Saccharomyces cerevisiae has been the most common and widely used microorganism in the food industry. However, Candida species have also been used as an adjuvant in cheese production or as starters for coffee, cocoa, vegetable, meat, beer, and wine fermentations. A thorough screening of candidate Candida is sometimes performed to obtain the best performing strains to enhance specific features. Some commonly selected species include C. pulcherrima (teleomorph Metschnikowia pulcherrima) (wine), C. parapsilosis (teleomorph Monilia parapsilosis) (coffee), C. famata (teleomorph Debaryomyces hansenii) (cheese), and C. zeylanoides (teleomorph Kurtzmaniella zeylanoides) and C. norvegensis (teleomorph Pichia norvegensis) (cocoa). These species are associated with the production of key metabolites (food aroma formation) and different enzymes. However, safety-associated selection criteria are often neglected. It is widely known that some Candida species are opportunistic human pathogens, with important clinical relevance. Here, the physiology and metabolism of Candida species are addressed, initially emphasizing their clinical aspects and potential pathogenicity. Then, Candida species used in food fermentations and their functional roles are reported. We recommended that Candida not be used as food cultures if safety assessments are not performed. Some safety features are highlighted to help researchers choose methods and selection criteria.
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7
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A Preliminary Approach to Define the Microbiological Profile of Naturally Fermented Peranzana Alta Daunia Table Olives. Foods 2022; 11:foods11142100. [PMID: 35885341 PMCID: PMC9315826 DOI: 10.3390/foods11142100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 07/11/2022] [Accepted: 07/12/2022] [Indexed: 01/27/2023] Open
Abstract
Samples of brines from Peranzana Alta Daunia olives at the end of fermentation were analyzed; samples were taken in two different years from eight different locations (Torremaggiore, San Severo, San Paolo di Civitate, Lucera, Chieuti, Serracapriola, Gargano and Termoli in Southern Italy). Total aerobic count, enterobacteria, pseudomonads, staphylococci, lactic acid bacteria and yeasts (Saccharomyces and non-Saccharomyces) were assessed; moreover, presumptive lactobacilli were characterized in relation to their ability to grow with salt added, and at 10 and 45 °C. Yeasts were generally more abundant than lactic acid bacteria (LAB), but two clusters were found: one including the areas of Torremaggiore, San Severo, Apricena, Lucera and San Paolo di Civitate (area 1, A1), and another comprising Gargano, Termoli and Serracapriola (area 2, A2). Lactobacilli of A1 were more resistant to stress conditions (growth at 10% of salt and at 10 °C); moreover, A1 was characterized by a lower abundance of yeasts. In some areas (Lucera and San Severo), a higher abundance of non-Saccharomyces yeasts was found. This paper offers a first insight into the profile of Peranzana Alta Daunia olives at the end of fermentation, suggesting that some indices (technological traits of lactobacilli, ratio yeasts vs. LAB, abundance of non-Saccharomyces yeasts) could be useful to define a microbiological profile of the variety.
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8
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Wang Y, Qin K, Chen F, Jiang L, Zhou H, Ding S, Wang R. Texture improvement of fermented minced pepper under vacuum impregnation with pectin methylesterase and CaCl
2
during fermentation. Int J Food Sci Technol 2022. [DOI: 10.1111/ijfs.15671] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Yingrui Wang
- College of Food Science and Technology Hunan Agricultural University Changsha 410128 China
| | - Keying Qin
- College of Food Science and Technology Hunan Agricultural University Changsha 410128 China
| | - Fei Chen
- College of Food Science and Technology Hunan Agricultural University Changsha 410128 China
| | - Liwen Jiang
- College of Food Science and Technology Hunan Agricultural University Changsha 410128 China
| | - Hui Zhou
- College of Food Science and Technology Hunan Agricultural University Changsha 410128 China
| | - Shenghua Ding
- Hunan Agricultural Product Processing Institute Hunan Academy of Agricultural Sciences Changsha 410125 China
| | - Rongrong Wang
- College of Food Science and Technology Hunan Agricultural University Changsha 410128 China
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9
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Qin Q, Liu J, Hu S, Yu J, Zhang L, Huang S, Yang M, Wang L. Exploring Fungal Species Diversity in the Premature Yeast Flocculation (PYF) of Barley Malt Using Deep Sequencing. JOURNAL OF THE AMERICAN SOCIETY OF BREWING CHEMISTS 2022. [DOI: 10.1080/03610470.2021.2025329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Qingqing Qin
- State Key Laboratory of Biological Fermentation Engineering of Beer, Tsingtao Brewery Co., Ltd, Qingdao, Shandong, China
- The State Key Laboratory of Microbial Technology, Shandong University, Jinan, Shandong, China
| | - Jia Liu
- State Key Laboratory of Biological Fermentation Engineering of Beer, Tsingtao Brewery Co., Ltd, Qingdao, Shandong, China
| | - Shumin Hu
- State Key Laboratory of Biological Fermentation Engineering of Beer, Tsingtao Brewery Co., Ltd, Qingdao, Shandong, China
| | - Junhong Yu
- State Key Laboratory of Biological Fermentation Engineering of Beer, Tsingtao Brewery Co., Ltd, Qingdao, Shandong, China
| | - Lei Zhang
- State Key Laboratory of Biological Fermentation Engineering of Beer, Tsingtao Brewery Co., Ltd, Qingdao, Shandong, China
| | - Shuxia Huang
- State Key Laboratory of Biological Fermentation Engineering of Beer, Tsingtao Brewery Co., Ltd, Qingdao, Shandong, China
| | - Mei Yang
- State Key Laboratory of Biological Fermentation Engineering of Beer, Tsingtao Brewery Co., Ltd, Qingdao, Shandong, China
| | - Lushan Wang
- The State Key Laboratory of Microbial Technology, Shandong University, Jinan, Shandong, China
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10
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Anagnostopoulos DA, Tsaltas D. Current Status, Recent Advances, and Main Challenges on Table Olive Fermentation: The Present Meets the Future. Front Microbiol 2022; 12:797295. [PMID: 35095807 PMCID: PMC8793684 DOI: 10.3389/fmicb.2021.797295] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 12/01/2021] [Indexed: 01/18/2023] Open
Abstract
Table olives are among the most well-known fermented foods, being a vital part of the Mediterranean pyramid diet. They constitute a noteworthy economic factor for the producing countries since both their production and consumption are exponentially increasing year by year, worldwide. Despite its significance, olive’s processing is still craft based, not changed since antiquity, leading to the production of an unstable final product with potential risk concerns, especially related to deterioration. However, based on industrial needs and market demands for reproducible, safe, and healthy products, the modernization of olive fermentation processing is the most important challenge of the current decade. In this sense, the reduction of sodium content and more importantly the use of suitable starter cultures, exhibiting both technological and potential probiotic features, to drive the process may extremely contribute to this need. Prior, to achieve in this effort, the full understanding of table olive microbial ecology during fermentation, including an in-depth determination of microbiota presence and/or dominance and its functionality (genes responsible for metabolite production) that shape the sensorial characteristics of the final product, is a pre-requisite. The advent of meta-omics technology could provide a thorough study of this complex ecosystem, opening in parallel new insights in the field, such as the concept of microbial terroir. Herein, we provide an updated overview in the field of olive fermentation, pointing out some important challenges/perspectives that could be the key to the olive sector’s advancement and modernization.
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Affiliation(s)
- Dimitrios A Anagnostopoulos
- Department of Agricultural Sciences, Biotechnology and Food Science, Cyprus University of Technology, Limassol, Cyprus
| | - Dimitrios Tsaltas
- Department of Agricultural Sciences, Biotechnology and Food Science, Cyprus University of Technology, Limassol, Cyprus
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11
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Arroyo-López FN, Benítez-Cabello A, Romero-Gil V, Rodríguez-Gómez F, Garrido-Fernández A. Delving into the bacterial diversity of spoiled green Manzanilla Spanish-style table olive fermentations. Int J Food Microbiol 2021; 359:109415. [PMID: 34607034 DOI: 10.1016/j.ijfoodmicro.2021.109415] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 09/13/2021] [Accepted: 09/19/2021] [Indexed: 11/28/2022]
Abstract
This work applies metataxonomic, standard statistics, and compositional data (CoDa) techniques to study the bacterial diversity of spoiled and normal Spanish-style table olive fermentations, analysing a total of 10-tons of industrial fermentation containers from two processing yards. Forty percent were affected by butyric, sulfidic, or putrid spoilage, while 60% followed the ordinary fermentation course. The samples were obtained at 30 days of fermentation, determining their 16S rRNA gene Amplicon Sequence Variant compositions (ASVs). The butyric containers showed a bacterial profile strongly associated with the genera Enterococcus, Leuconostoc, and Atlantibacter, but also with Lactiplantibacillus and Melissococcus, and less confident to Raoultella, Enterobacter, Serratia, and Celerinatantimonas. The sulfidic fermentation was linked to Alkalibacterium and, to a lesser extent, Marinilactibacillus and the absence of Lactiplantibacillus. Putrid spoilage was mainly related to Halolactibacillus and Alkalibacterium. Sulfidic/putrid (together) differed from butyric spoilage by the presence of Alkalibacterium/Marinilactibacillus as well as by Halomonas/Halanaerobium. Lactiplantibacillus dominated normal fermentations, but Vibrio was also frequently found (0-46%), apparently not causing any alteration. These results contribute to a better microbial characterisation of non-zapatera spoiled table olive fermentations. They also suggest using several statistical techniques to discriminate normal vs spoiled fermentations adequately.
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Affiliation(s)
- Francisco Noé Arroyo-López
- Instituto de la Grasa (CSIC), Food Biotechnology Department, Campus Universitario Pablo de Olavide, Building 46, Ctra. Sevilla-Utrera, km 1, 41013 Seville, Spain
| | - Antonio Benítez-Cabello
- Instituto de la Grasa (CSIC), Food Biotechnology Department, Campus Universitario Pablo de Olavide, Building 46, Ctra. Sevilla-Utrera, km 1, 41013 Seville, Spain.
| | - Verónica Romero-Gil
- Technological Applications for Improvements of the Quality and Safety in Foods, Avda. Diego Martínez Barrio 10, 2ª Planta, 41013 Seville, Spain
| | - Francisco Rodríguez-Gómez
- Instituto de la Grasa (CSIC), Food Biotechnology Department, Campus Universitario Pablo de Olavide, Building 46, Ctra. Sevilla-Utrera, km 1, 41013 Seville, Spain
| | - Antonio Garrido-Fernández
- Instituto de la Grasa (CSIC), Food Biotechnology Department, Campus Universitario Pablo de Olavide, Building 46, Ctra. Sevilla-Utrera, km 1, 41013 Seville, Spain
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12
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Michailidou S, Trikka F, Pasentsis K, Petrovits GE, Kyritsi M, Argiriou A. Insights into the evolution of Greek style table olives microbiome stored under modified atmosphere: Biochemical implications on the product quality. Food Control 2021. [DOI: 10.1016/j.foodcont.2021.108286] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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13
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Effect of ripening and variety on the physiochemical quality and flavor of fermented Chinese chili pepper (Paojiao). Food Chem 2021; 368:130797. [PMID: 34399178 DOI: 10.1016/j.foodchem.2021.130797] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 07/23/2021] [Accepted: 08/04/2021] [Indexed: 02/04/2023]
Abstract
This work monitored the effect of ripening and variety on the physiochemical quality and flavor of fermented Chinese chili pepper (Paojiao). Three commercial varieties of chili pepper (Capsicum frutescens Linn.) at three ripening stages were selected. Physiochemical quality (color, texture, and vitamin C) and flavor properties [capsaicinoids, free amino acid (FAA), and aroma] were determined and compared by multivariate data analysis. The hardness and chewiness decreased, while the contents of vitamin C, capsaicin, and taste-active FAAs increased in Paojiao with ripening. More volatiles were found in green peppers. Fingerprinting and multivariate data analysis revealed that ester, aldehydes, and terpenes were discriminant volatiles that significantly changed in Paojiao during ripening. In general, ripening and variety greatly affect the physiochemical and flavor quality of peppers and their effects intensify after fermentation.
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14
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Xu H, Chen Y, Ding S, Qin Y, Jiang L, Zhou H, Deng F, Wang R. Changes in texture qualities and pectin characteristics of fermented minced pepper during natural and inoculated fermentation process. Int J Food Sci Technol 2021. [DOI: 10.1111/ijfs.15224] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Haishan Xu
- College of Food Science and Technology Hunan Agricultural University Changsha 410128 China
- Hunan Agricultural Product Processing Institute Hunan Academy of Agricultural Sciences Changsha 410125 China
| | - Yuyu Chen
- College of Food Science and Technology Hunan Agricultural University Changsha 410128 China
| | - Shenghua Ding
- Hunan Agricultural Product Processing Institute Hunan Academy of Agricultural Sciences Changsha 410125 China
| | - Yeyou Qin
- Hunan Tantanxiang Biotechnology Co Ltd, Changsha 410128 China
| | - Liwen Jiang
- College of Food Science and Technology Hunan Agricultural University Changsha 410128 China
| | - Hui Zhou
- College of Food Science and Technology Hunan Agricultural University Changsha 410128 China
| | - Fangming Deng
- College of Food Science and Technology Hunan Agricultural University Changsha 410128 China
| | - Rongrong Wang
- College of Food Science and Technology Hunan Agricultural University Changsha 410128 China
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Fang S, Jin Z, Xu Y, Sha R, Mao J, Jiang Z. Chinese bayberry Jiaosu fermentation – changes of mycobiota composition and antioxidant properties. INTERNATIONAL JOURNAL OF FOOD ENGINEERING 2021. [DOI: 10.1515/ijfe-2020-0238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The aim of the study was to investigate the dynamic changes of mycobiota community, and the resultant effects on the antioxidant properties during the Chinese bayberry Jiaosu fermentation. The structure and composition of mycobiota during the Chinese bayberry Jiaosu fermentation were significantly changed (p < 0.001) and clearly clustered into two distinct phases (Phase 1: Day 5–20; Phase 2: Day 30–60, p < 0.001). From Phase 1 to Phase 2, the dominant fungi gradually changed from Saccharomycetales fam Incertae sedis to Saccharomyces cerevisiae. The antioxidative properties (total polyphenols, 1,1-diphenyl-2-picrylhydrazyl [DPPH], superoxide and 2,2′-azino-bis-(3-ethylbenzthiazoline-6-sulphonate) [ABTS] radical scavenging) of Chinese bayberry Jiaosu were significantly increased by 250.4, 73.9, 25.3 and 40.0% respectively (p < 0.001). Co-occurrence network analysis revealed that Saccharomyces cerevisiae contributed to the increase of antioxidative properties in the Chinese bayberry Jiaosu fermentation. Our research indicates that fermentation into Chinese bayberry Jiaosu is an effective and new method for high-valued utilization of Chinese bayberry.
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Affiliation(s)
- Sheng Fang
- Yuanpei College , Shaoxing University , Shaoxing , Zhejiang , China
| | - Zhening Jin
- Yuanpei College , Shaoxing University , Shaoxing , Zhejiang , China
| | - Yisong Xu
- School of Life Sciences , Westlake University , Hangzhou , Zhejiang , China
| | - Ruyi Sha
- School of Biological and Chemical Engineering , Zhejiang University of Science and Technology , Hangzhou , Zhejiang , China
- Zhejiang Provincial Key Laboratory for Chemical and Biological Processing Technology of Farm Products , Hangzhou , Zhejiang , China
- Zhejiang Provincial Collaborative Innovation Center of Agricultural Biological Resources Biochemical Manufacturing , Hangzhou , Zhejiang , China
| | - Jianwei Mao
- School of Biological and Chemical Engineering , Zhejiang University of Science and Technology , Hangzhou , Zhejiang , China
- Zhejiang Provincial Key Laboratory for Chemical and Biological Processing Technology of Farm Products , Hangzhou , Zhejiang , China
- Zhejiang Provincial Collaborative Innovation Center of Agricultural Biological Resources Biochemical Manufacturing , Hangzhou , Zhejiang , China
- Zhejiang Industry Polytechnic College , Shaoxing , Zhejiang , China
| | - Zengliang Jiang
- School of Life Sciences , Westlake University , Hangzhou , Zhejiang , China
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New Insights into Microbial Diversity of the Traditional Packed Table Olives Aloreña de Málaga through Metataxonomic Analysis. Microorganisms 2021; 9:microorganisms9030561. [PMID: 33803149 PMCID: PMC8000080 DOI: 10.3390/microorganisms9030561] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 03/02/2021] [Accepted: 03/02/2021] [Indexed: 12/25/2022] Open
Abstract
Aloreña de Málaga is a table olive especially characterised by its natural freshness and short shelf-life. In this work, we applied a metataxonomic approach to unravel the microbial diversity of bacterial and fungi populations through the shelf-life of traditionally packed Aloreña de Málaga. A significant increase in lactic acid bacteria and mesophilic aerobic populations was observed during shelf-life, reaching the maximum population levels (4-5 log10 CFU) at the end of the study (260 days). On the contrary, a rapid reduction in yeast and mould populations was reported. The use of a metataxonomic analysis based on the amplification of 16S (bacteria) and internal transcribed spacer (ITS) region (fungi) regions revealed a low diversity for both microbial groups. Lactiplantibacillus (65.05 ± 8.65% in brine vs. 58.70 ± 15.70% in fruit), Pediococcus (28.17 ± 7.36% in brine vs. 27.20 ± 15.95% in fruit), and Celerinatantimonas (4.64 ± 1.08% in brine vs. 11.82 ± 18.17% in fruit) were the main genera found among bacteria, and an increase in Lactiplantibacillus and a reduction in Celerinatantimonas populations during the shelf-life were observed. On the other hand, Citeromyces was the dominant fungi genus (54.11 ± 2.00% in brine vs. 50.91 ± 16.14% in fruit), followed by Candida (8.80 ± 2.57% in brine vs. 12.32 ± 8.61% in fruit) and Penicillium (6.48 ± 1.87% vs. 8.48 ± 4.43% in fruit). No food-borne pathogen genera were detected in any of the samples analysed, indicating the high level of food safety found in this ready-to-eat fermented vegetable. Data obtained in this work will help in the design of new strategies for the control of microbial populations during the shelf-life of Aloreña de Málaga.
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Microbiota profiling and screening of the lipase active halotolerant yeasts of the olive brine. World J Microbiol Biotechnol 2021; 37:23. [PMID: 33428003 DOI: 10.1007/s11274-020-02976-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 12/03/2020] [Indexed: 12/13/2022]
Abstract
Searching for novel enzymes that could be active in organic solvents has become an area of interest in recent years. Olive brine naturally provides a suitable environment for the survival of halophilic and acidophilic microorganisms and the resulting genome is thought to be a gene source for determining the halophilic and acidophilic proteins that are active in a non-aqueous organic solvent medium, and so it has been used in several biotechnological and industrial applications. In this study, microbial analysis of natural, cracked green olive brine from the southern region of Turkey has been made by next-generation sequencing of the brine metagenome for the first time in the literature. The number of reads assigned to fungal operational taxonomic units was the highest percentage (73.04%) with the dominant representation of Ascomycota phylum (99% of fungi). Bacterial OTU was 3.56% of the reads and Proteobacteria phylum was 65% of the reads. The lipase production capacity of the yeasts that were grown on the media containing elevated concentrations of NaCl (1-3 M) was determined on a Rhodamine B-including medium. Molecular identification of the selected yeasts was performed and 90% of sequenced yeasts had a high level of similarity with Candida diddensiae, whereas 10% showed similarity to Candida boidinii. The hydrolytic lipase activities using olive oil were analyzed and both yeasts showed cell-bound lipase activity at pH 3.0.
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Penland M, Deutsch SM, Falentin H, Pawtowski A, Poirier E, Visenti G, Le Meur C, Maillard MB, Thierry A, Mounier J, Coton M. Deciphering Microbial Community Dynamics and Biochemical Changes During Nyons Black Olive Natural Fermentations. Front Microbiol 2020; 11:586614. [PMID: 33133054 PMCID: PMC7578400 DOI: 10.3389/fmicb.2020.586614] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 09/02/2020] [Indexed: 12/15/2022] Open
Abstract
French PDO Nyons black table olives are produced according to a traditional slow spontaneous fermentation in brine. The manufacture and unique sensorial properties of these olives thus only rely on the autochthonous complex microbiota. This study aimed at unraveling the microbial communities and dynamics of Nyons olives during a 1.5-year-long spontaneous fermentation to determine the main microbial drivers and link microbial species to key metabolites. Fermentations were monitored at a local producer plant at regular time intervals for two harvests and two olive types (organically and conventionally grown) using culture-dependent and metabarcoding (ITS2 for fungi, V3-V4 region for bacteria) approaches. Olives and brines were also sampled for volatiles, organic acids and phenolic compounds. No major differences in microbiota composition were observed according to olive type or harvest period. Throughout the fermentation, yeasts were clearly the most dominant. ITS2 sequencing data revealed complex fungal diversity dominated by Citeromyces nyonsensis, Wickerhamomyces anomalus, Zygotorulaspora mrakii, Candida boidinii and Pichia membranifaciens species. Bacterial communities were dominated by the Celerinatantimonas genus, while lactic acid bacteria remained scarce. Clear shifts in microbial communities and biochemical profiles were observed during fermentation and, by correlating metabolites and microbiota changes, four different phases were distinguished. During the first 7 days, phase I, a fast decrease of filamentous fungal and bacterial populations was observed. Between days 21 and 120, phase II, W. anomalus and C. nyonsensis for fungi and Celerinatantimonas diazotrophica for bacteria dominated the fermentation and were linked to the pH decrease and citric acid production. Phase III, between 120 and 183 days, was characterized by an increase in acids and esters and correlated to increased abundances of Z. mrakii, P. membranifaciens and C. boidinii. During the last months of fermentation, phase IV, microbial communities were dominated by P. membranifaciens and C. boidinii. Both species were strongly correlated to an increase in fruity esters and alcohol abundances. Overall, this study provides an in-depth understanding about microbial species succession and how the microbiota shapes the final distinct olive characteristics. It also constitutes a first step to identify key drivers of this fermentation.
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Affiliation(s)
- Marine Penland
- Univ Brest, Laboratoire Universitaire de Biodiversité et Ecologie Microbienne, Plouzané, France.,STLO, INRAE, Institut Agro, Rennes, France
| | | | | | - Audrey Pawtowski
- Univ Brest, Laboratoire Universitaire de Biodiversité et Ecologie Microbienne, Plouzané, France
| | - Elisabeth Poirier
- Univ Brest, Laboratoire Universitaire de Biodiversité et Ecologie Microbienne, Plouzané, France
| | - Giorgia Visenti
- Univ Brest, Laboratoire Universitaire de Biodiversité et Ecologie Microbienne, Plouzané, France
| | - Christophe Le Meur
- Univ Brest, Laboratoire Universitaire de Biodiversité et Ecologie Microbienne, Plouzané, France
| | | | | | - Jérôme Mounier
- Univ Brest, Laboratoire Universitaire de Biodiversité et Ecologie Microbienne, Plouzané, France
| | - Monika Coton
- Univ Brest, Laboratoire Universitaire de Biodiversité et Ecologie Microbienne, Plouzané, France
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Argyri K, Doulgeraki AI, Manthou E, Grounta A, Argyri AA, Nychas GJE, Tassou CC. Microbial Diversity of Fermented Greek Table Olives of Halkidiki and Konservolia Varieties from Different Regions as Revealed by Metagenomic Analysis. Microorganisms 2020; 8:microorganisms8081241. [PMID: 32824085 PMCID: PMC7464643 DOI: 10.3390/microorganisms8081241] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 08/10/2020] [Accepted: 08/13/2020] [Indexed: 11/16/2022] Open
Abstract
Current information from conventional microbiological methods on the microbial diversity of table olives is insufficient. Next-generation sequencing (NGS) technologies allow comprehensive analysis of their microbial community, providing microbial identity of table olive varieties and their designation of origin. The purpose of this study was to evaluate the bacterial and yeast diversity of fermented olives of two main Greek varieties collected from different regions-green olives, cv. Halkidiki, from Kavala and Halkidiki and black olives, cv. Konservolia, from Magnesia and Fthiotida-via conventional microbiological methods and NGS. Total viable counts (TVC), lactic acid bacteria (LAB), yeast and molds, and Enterobacteriaceae were enumerated. Microbial genomic DNA was directly extracted from the olives' surface and subjected to NGS for the identification of bacteria and yeast communities. Lactobacillaceae was the most abundant family in all samples. In relation to yeast diversity, Phaffomycetaceae was the most abundant yeast family in Konservolia olives from the Magnesia region, while Pichiaceae dominated the yeast microbiota in Konservolia olives from Fthiotida and in Halkidiki olives from both regions. Further analysis of the data employing multivariate analysis allowed for the first time the discrimination of cv. Konservolia and cv. Halkidiki table olives according to their geographical origin.
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Affiliation(s)
- Konstantina Argyri
- Institute of Technology of Agricultural Products, Hellenic Agricultural Organisation DEMETER, Sofokli Venizelou 1, Lycovrissi, 14123 Athens, Greece; (K.A.); (A.G.); (A.A.A.)
| | - Agapi I. Doulgeraki
- Institute of Technology of Agricultural Products, Hellenic Agricultural Organisation DEMETER, Sofokli Venizelou 1, Lycovrissi, 14123 Athens, Greece; (K.A.); (A.G.); (A.A.A.)
- Correspondence: (A.I.D.); (C.C.T.); Tel.: +30-2102845940 (A.I.D. & C.C.T.)
| | - Evanthia Manthou
- Laboratory of Food Microbiology and Biotechnology, Department of Food Science and Human Nutrition, School of Food and Nutritional Sciences, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece; (E.M.); (G.-J.E.N.)
| | - Athena Grounta
- Institute of Technology of Agricultural Products, Hellenic Agricultural Organisation DEMETER, Sofokli Venizelou 1, Lycovrissi, 14123 Athens, Greece; (K.A.); (A.G.); (A.A.A.)
| | - Anthoula A. Argyri
- Institute of Technology of Agricultural Products, Hellenic Agricultural Organisation DEMETER, Sofokli Venizelou 1, Lycovrissi, 14123 Athens, Greece; (K.A.); (A.G.); (A.A.A.)
| | - George-John E. Nychas
- Laboratory of Food Microbiology and Biotechnology, Department of Food Science and Human Nutrition, School of Food and Nutritional Sciences, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece; (E.M.); (G.-J.E.N.)
| | - Chrysoula C. Tassou
- Institute of Technology of Agricultural Products, Hellenic Agricultural Organisation DEMETER, Sofokli Venizelou 1, Lycovrissi, 14123 Athens, Greece; (K.A.); (A.G.); (A.A.A.)
- Correspondence: (A.I.D.); (C.C.T.); Tel.: +30-2102845940 (A.I.D. & C.C.T.)
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20
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FoodOmics as a new frontier to reveal microbial community and metabolic processes occurring on table olives fermentation. Food Microbiol 2020; 92:103606. [PMID: 32950142 DOI: 10.1016/j.fm.2020.103606] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 07/22/2020] [Accepted: 07/22/2020] [Indexed: 01/18/2023]
Abstract
Table olives are considered the most widespread fermented food in the Mediterranean area and their consumption is expanding all over the world. This fermented vegetable can be considered as a natural functional food thanks to their high nutritional value and high content of bioactive compounds that contribute to the health and well-being of consumers. The presence of bioactive compounds is strongly influenced by a complex microbial consortium, traditionally exploited through culture-dependent approaches. Recently, the rapid spread of omics technologies has represented an important challenge to better understand the function, the adaptation and the exploitation of microbial diversity in different complex ecosystems, such as table olives. This review provides an overview of the potentiality of omics technologies to in depth investigate the microbial composition and the metabolic processes that drive the table olives fermentation, affecting both sensorial profile and safety properties of the final product. Finally, the review points out the role of omics approaches to raise at higher sophisticated level the investigations on microbial, gene, protein, and metabolite, with huge potential for the integration of table olives composition with functional assessments.
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21
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Benítez-Cabello A, Romero-Gil V, Medina-Pradas E, Garrido-Fernández A, Arroyo-López FN. Exploring bacteria diversity in commercialized table olive biofilms by metataxonomic and compositional data analysis. Sci Rep 2020; 10:11381. [PMID: 32647238 PMCID: PMC7347591 DOI: 10.1038/s41598-020-68305-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 06/23/2020] [Indexed: 11/12/2022] Open
Abstract
In this work, a total of 72 samples of non-thermally treated commercial table olives were obtained from different markets of the world. Then, prokaryotic diversity in olive biofilms was investigated by metataxonomic analysis. A total of 660 different OTUs were obtained, belonging to Archaea (2.12%) and Bacteria domains (97.88%). From these, 41 OTUs with a proportion of sequences ≥ 0.01% were studied by compositional data analysis. Only two genera were found in all samples, Lactobacillus, which was the predominant bacteria in the biofilm consortium (median 54.99%), and Pediococcus (26.09%). Celerinatantimonas, Leuconostoc, Alkalibacterium, Pseudomonas, Marinilactibacillus, Weissella, and the family Enterobacteriaceae were also present in at least 80% of samples. Regarding foodborne pathogens, only Enterobacteriaceae, Vibrio, and Staphylococcus were detected in at least 91.66%, 75.00%, and 54.10% of samples, respectively, but their median values were always below 0.15%. Compositional data analysis allowed discriminating between lye treated and natural olive samples, as well as between olives packaged in glass, PET and plastic bags. Leuconostoc, Celerinatantimonas, and Alkalibacterium were the bacteria genera with a higher discriminant power among samples. These results expand our knowledge of the bacteria diversity in olive biofilms, providing information about the sanitary and hygienic status of this ready-to-eat fermented vegetable.
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Affiliation(s)
- Antonio Benítez-Cabello
- Food Technology Department, Instituto de La Grasa (CSIC), Crta Utrera km 1, Campus Universitario Pablo de Olavide. Building 46, 41013, Seville, Spain
| | - Verónica Romero-Gil
- Technological Applications for Improvement of Quality and Safety in Foods, Carretera de Marbella nº22. Planta-1, 29108, Guaro, Málaga, Spain
| | - Eduardo Medina-Pradas
- Food Technology Department, Instituto de La Grasa (CSIC), Crta Utrera km 1, Campus Universitario Pablo de Olavide. Building 46, 41013, Seville, Spain
| | - Antonio Garrido-Fernández
- Food Technology Department, Instituto de La Grasa (CSIC), Crta Utrera km 1, Campus Universitario Pablo de Olavide. Building 46, 41013, Seville, Spain
| | - Francisco Noé Arroyo-López
- Food Technology Department, Instituto de La Grasa (CSIC), Crta Utrera km 1, Campus Universitario Pablo de Olavide. Building 46, 41013, Seville, Spain.
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Unraveling the Microbiota of Natural Black cv. Kalamata Fermented Olives through 16S and ITS Metataxonomic Analysis. Microorganisms 2020; 8:microorganisms8050672. [PMID: 32384669 PMCID: PMC7284738 DOI: 10.3390/microorganisms8050672] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 05/02/2020] [Accepted: 05/04/2020] [Indexed: 11/23/2022] Open
Abstract
Kalamata natural black olives are one of the most economically important Greek varieties. The microbial ecology of table olives is highly influenced by the co-existence of bacteria and yeasts/fungi, as well as the physicochemical parameters throughout the fermentation. Therefore, the aim of this study was the identification of bacterial and yeast/fungal microbiota of both olives and brines obtained from 29 cv. Kalamata olive samples industrially fermented in the two main producing geographical regions of Greece, namely Aitoloakarnania and Messinia/Lakonia. The potential microbial biogeography association between certain taxa and geographical area was also assessed. The dominant bacterial family identified in olive and brine samples from both regions was Lactobacillaceae, presenting, however, higher average abundances in the samples from Aitoloakarnania compared to Messinia/Lakonia. At the genus level, Lactobacillus, Celerinatantimonas, Propionibacterium and Pseudomonas were the most abundant. In addition, the yeasts/fungal communities were less diverse compared to those of bacteria, with Pichiaceae being the dominant family and Pichia, Ogataea, and Saccharomyces being the most abundant genera. To the best of our knowledge, this is the first report on the microbiota of both olives and brines of cv. Kalamata black olives fermented on an industrial scale between two geographical regions of Greece using metagenomics analysis.
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Ramos S, Salazar M, Nascimento L, Carazzolle M, Pereira G, Delforno T, Nascimento M, de Aleluia T, Celeghini R, Efraim P. Influence of pulp on the microbial diversity during cupuassu fermentation. Int J Food Microbiol 2019; 318:108465. [PMID: 31838279 DOI: 10.1016/j.ijfoodmicro.2019.108465] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Revised: 10/31/2019] [Accepted: 11/26/2019] [Indexed: 12/15/2022]
Abstract
Cupuassu (Theobroma grandiflorum Schum) is a fruit belonging to the same genus as cocoa and, through seed fermentation, a chocolate-like product called "the cupulate" is obtained. The pulp is removed from the seeds before fermentation because its abundance hinders the process. Unlike cocoa, little is known about the microbial diversity involved in cupuassu fermentation. The goal of this study was to explore the use of next-generation sequencing to identify the yeasts and bacteria communities involved in cupuassu seed fermentation on three different pulp concentrations (0, 7.5, and 15%) as well as two turning schemes on the microbial growth. In order to do that, a massive sequencing of the 16S and ITS4 rRNA region (S) using the Illumina MiSeq Platform identified some genera of bacteria and yeasts, respectively, in the fermentation environment. Taxonomic analyses of both communities, especially at the genus level, revealed a predominance of yeasts such as Pichia and Hanseniaspora, and bacteria such as Acetobacter and Lactobacillus. A predominance of bacteria over yeasts diversity was observed in the experiments with higher pulp concentrations (15%). The physicochemical analysis showed that fermentation of samples with 15% pulp exhibited longer fermentation times, the highest temperatures, and elevated production of organic acids such as acetic acid, a precursor of flavor. In addition, the turning applied every 24 h to the mass slightly favored the formation of flavor precursors. It seems that the abundance and composition of cupuassu pulp, rich in organic compounds, can influence the diversity of some populations of yeasts. Some of those compounds identified in previous studies are terpenes with antimicrobial activity. More studies will be necessary to confirm if the presence of terpenes compounds in the cupuassu pulp exert some inhibitory action on microorganism diversity.
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Affiliation(s)
- Simone Ramos
- Department of Food Technology, University of Campinas, Campinas, São Paulo, Brazil
| | - Marcela Salazar
- Laboratory of Genomic and Expression, Institute of Biology, University of Campinas, São Paulo, Brazil
| | - Leandro Nascimento
- Laboratory of Genomic and Expression, Institute of Biology, University of Campinas, São Paulo, Brazil
| | - Marcelo Carazzolle
- Laboratory of Genomic and Expression, Institute of Biology, University of Campinas, São Paulo, Brazil
| | - Gonçalo Pereira
- Laboratory of Genomic and Expression, Institute of Biology, University of Campinas, São Paulo, Brazil
| | - Tiago Delforno
- Microbial Resources Division, Research Center for Chemistry, Biology and Agriculture (CPQBA), University of Campinas - UNICAMP, São Paulo, Brazil
| | - Maristela Nascimento
- Department of Food Technology, University of Campinas, Campinas, São Paulo, Brazil
| | - Tiago de Aleluia
- Department of Food Technology, University of Campinas, Campinas, São Paulo, Brazil
| | - Renata Celeghini
- Department of Food Technology, University of Campinas, Campinas, São Paulo, Brazil
| | - Priscilla Efraim
- Department of Food Technology, University of Campinas, Campinas, São Paulo, Brazil.
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Benítez-Cabello A, Romero-Gil V, Medina E, Sánchez B, Calero-Delgado B, Bautista-Gallego J, Jiménez-Díaz R, Arroyo-López FN. Metataxonomic analysis of the bacterial diversity in table olive dressing components. Food Control 2019. [DOI: 10.1016/j.foodcont.2019.05.036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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25
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Caridi A, Panebianco F, Scibetta S, Schena L. Selection of yeasts for their anti‐mold activity and prospective use in table olive fermentation. J FOOD PROCESS PRES 2019. [DOI: 10.1111/jfpp.14259] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Andrea Caridi
- Department AGRARIA Mediterranea University of Reggio Calabria Reggio Calabria Italy
| | - Felice Panebianco
- Department AGRARIA Mediterranea University of Reggio Calabria Reggio Calabria Italy
| | - Silvia Scibetta
- Department AGRARIA Mediterranea University of Reggio Calabria Reggio Calabria Italy
| | - Leonardo Schena
- Department AGRARIA Mediterranea University of Reggio Calabria Reggio Calabria Italy
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26
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Urien C, Legrand J, Montalent P, Casaregola S, Sicard D. Fungal Species Diversity in French Bread Sourdoughs Made of Organic Wheat Flour. Front Microbiol 2019; 10:201. [PMID: 30833935 PMCID: PMC6387954 DOI: 10.3389/fmicb.2019.00201] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 01/24/2019] [Indexed: 02/04/2023] Open
Abstract
Microbial communities are essential for the maintenance and functioning of ecosystems, including fermented food ecosystems. The analysis of food microbial communities is mainly focused on lactic acid bacteria (LAB), while yeast diversity is less understood. Here, we describe the fungal diversity of a typical food fermented product, sourdough bread. The species diversity of 14 sourdoughs collected from bakeries located all over France was analyzed. Bakeries were chosen to represent diverse bakery practices and included bakers and farmer-bakers. Both non-culture-based (pyrosequencing of Internal Transcribed Spacer 1 amplicons) and culture-based methods were used. While both identification methods were in agreement regarding the dominant yeast species of each sourdough, the ITS1 metabarcoding analysis identified an increased number of fungal species in sourdough communities. Two third of the identified sequences obtained from sourdoughs were Saccharomycetales, mostly in the Kazachstania genus. No Saccharomycetales species was shared by all the sourdoughs, whereas five other fungal species, mainly known plant pathogens, were found in all sourdoughs. Interestingly, Saccharomyces cerevisiae, known as “baker’s yeast,” was identified as the dominant species in only one sourdough. By contrast, five Kazachstania species were identified as the dominant sourdough species, including one recently described Kazachstania species, Kazachstania saulgeensis and an undescribed Kazachstania sp. Sourdoughs from farmer-bakers harbored Kazachstania bulderi, Kazachstania unispora and two newly described Kazachstania species, while sourdough from bakers mostly carried Kazachstania humilis as the dominant species. Such yeast diversity has not been found in sourdoughs before, highlighting the need to maintain different traditional food practices to conserve microbial diversity.
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Affiliation(s)
- Charlotte Urien
- GQE-Le Moulon, INRA, Université Paris-Sud, CNRS, AgroParisTech, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Judith Legrand
- GQE-Le Moulon, INRA, Université Paris-Sud, CNRS, AgroParisTech, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Pierre Montalent
- GQE-Le Moulon, INRA, Université Paris-Sud, CNRS, AgroParisTech, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Serge Casaregola
- Micalis Institute, INRA, AgroParisTech, CIRM-Levures, Université Paris-Saclay, Jouy-en-Josas, France
| | - Delphine Sicard
- GQE-Le Moulon, INRA, Université Paris-Sud, CNRS, AgroParisTech, Université Paris-Saclay, Gif-sur-Yvette, France.,SPO, INRA, Montpellier SupAgro, Univ Montpellier, Montpellier, France
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Campus M, Değirmencioğlu N, Comunian R. Technologies and Trends to Improve Table Olive Quality and Safety. Front Microbiol 2018; 9:617. [PMID: 29670593 PMCID: PMC5894437 DOI: 10.3389/fmicb.2018.00617] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 03/16/2018] [Indexed: 12/17/2022] Open
Abstract
Table olives are the most widely consumed fermented food in the Mediterranean countries. Peculiar processing technologies are used to process olives, which are aimed at the debittering of the fruits and improvement of their sensory characteristics, ensuring safety of consumption at the same time. Processors demand for novel techniques to improve industrial performances, while consumers' attention for natural and healthy foods has increased in recent years. From field to table, new techniques have been developed to decrease microbial load of potential spoilage microorganisms, improve fermentation kinetics and ensure safety of consumption of the packed products. This review article depicts current technologies and recent advances in the processing technology of table olives. Attention has been paid on pre processing technologies, some of which are still under-researched, expecially physical techniques, such ad ionizing radiations, ultrasounds and electrolyzed water solutions, which are interesting also to ensure pesticide decontamination. The selections and use of starter cultures have been extensively reviewed, particularly the characterization of Lactic Acid Bacteria and Yeasts to fasten and safely drive the fermentation process. The selection and use of probiotic strains to address the request for functional foods has been reported, along with salt reduction strategies to address health concerns, associated with table olives consumption. In this respect, probiotics enriched table olives and strategies to reduce sodium intake are the main topics discussed. New processing technologies and post packaging interventions to extend the shelf life are illustrated, and main findings in modified atmosphere packaging, high pressure processing and biopreservaton applied to table olive, are reported and discussed.
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Affiliation(s)
- Marco Campus
- Agris Sardegna, Agricultural Research Agency of Sardinia, Sassari, Italy
| | - Nurcan Değirmencioğlu
- Department of Food Processing, Bandirma Vocational High School, Bandirma Onyedi Eylül University, Bandirma, Turkey
| | - Roberta Comunian
- Agris Sardegna, Agricultural Research Agency of Sardinia, Sassari, Italy
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Belda I, Ruiz J, Alonso A, Marquina D, Santos A. The Biology of Pichia membranifaciens Killer Toxins. Toxins (Basel) 2017; 9:toxins9040112. [PMID: 28333108 PMCID: PMC5408186 DOI: 10.3390/toxins9040112] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 03/07/2017] [Accepted: 03/20/2017] [Indexed: 02/07/2023] Open
Abstract
The killer phenomenon is defined as the ability of some yeast to secrete toxins that are lethal to other sensitive yeasts and filamentous fungi. Since the discovery of strains of Saccharomyces cerevisiae capable of secreting killer toxins, much information has been gained regarding killer toxins and this fact has substantially contributed knowledge on fundamental aspects of cell biology and yeast genetics. The killer phenomenon has been studied in Pichia membranifaciens for several years, during which two toxins have been described. PMKT and PMKT2 are proteins of low molecular mass that bind to primary receptors located in the cell wall structure of sensitive yeast cells, linear (1→6)-β-d-glucans and mannoproteins for PMKT and PMKT2, respectively. Cwp2p also acts as a secondary receptor for PMKT. Killing of sensitive cells by PMKT is characterized by ionic movements across plasma membrane and an acidification of the intracellular pH triggering an activation of the High Osmolarity Glycerol (HOG) pathway. On the contrary, our investigations showed a mechanism of killing in which cells are arrested at an early S-phase by high concentrations of PMKT2. However, we concluded that induced mortality at low PMKT2 doses and also PMKT is indeed of an apoptotic nature. Killer yeasts and their toxins have found potential applications in several fields: in food and beverage production, as biocontrol agents, in yeast bio-typing, and as novel antimycotic agents. Accordingly, several applications have been found for P. membranifaciens killer toxins, ranging from pre- and post-harvest biocontrol of plant pathogens to applications during wine fermentation and ageing (inhibition of Botrytis cinerea, Brettanomyces bruxellensis, etc.).
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Affiliation(s)
- Ignacio Belda
- Department of Microbiology, Biology Faculty, Complutense University of Madrid, 28040 Madrid, Spain.
| | - Javier Ruiz
- Department of Microbiology, Biology Faculty, Complutense University of Madrid, 28040 Madrid, Spain.
| | - Alejandro Alonso
- Department of Microbiology, Biology Faculty, Complutense University of Madrid, 28040 Madrid, Spain.
| | - Domingo Marquina
- Department of Microbiology, Biology Faculty, Complutense University of Madrid, 28040 Madrid, Spain.
| | - Antonio Santos
- Department of Microbiology, Biology Faculty, Complutense University of Madrid, 28040 Madrid, Spain.
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