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Ruiz-Barba JL, Sánchez AH, López-López A, Cortés-Delgado A, Montaño A. Microbial community and volatilome changes in brines along the spontaneous fermentation of Spanish-style and natural-style green table olives (Manzanilla cultivar). Food Microbiol 2023; 113:104286. [PMID: 37098427 DOI: 10.1016/j.fm.2023.104286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 04/10/2023] [Accepted: 04/11/2023] [Indexed: 04/27/2023]
Abstract
Microbial community and volatilome of brines were monitored during the spontaneous fermentations of Spanish-style and Natural-style green table olives from Manzanilla cultivar. Fermentation of olives in the Spanish style was carried out by lactic acid bacteria (LAB) and yeasts, whereas halophilic Gram-negative bacteria and archaea, along with yeasts, drove the fermentation in the Natural style. Clear differences between the two olive fermentations regarding physicochemical and biochemical features were found. Lactobacillus, Pichia, and Saccharomyces were the dominant microbial communities in the Spanish style, whereas Allidiomarina, Halomonas, Saccharomyces, Pichia, and Nakazawaea predominated in the Natural style. Numerous qualitative and quantitative differences in individual volatiles between both fermentations were found. The final products mainly differed in total amounts of volatile acids and carbonyl compounds. In addition, in each olive style, strong positive correlations were found between the dominant microbial communities and various volatile compounds, some of them previously reported as aroma-active compounds in table olives. The findings from this study provide a better understanding of each fermentation process and may help the development of controlled fermentations using starter cultures of bacteria and/or yeasts for the production of high-quality green table olives from Manzanilla cultivar.
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Affiliation(s)
- José Luis Ruiz-Barba
- Food Biotechnology Department, Instituto de la Grasa (CSIC), Utrera Road, km 1, 41013, Seville, Spain.
| | - Antonio Higinio Sánchez
- Food Biotechnology Department, Instituto de la Grasa (CSIC), Utrera Road, km 1, 41013, Seville, Spain.
| | - Antonio López-López
- Food Biotechnology Department, Instituto de la Grasa (CSIC), Utrera Road, km 1, 41013, Seville, Spain.
| | - Amparo Cortés-Delgado
- Food Biotechnology Department, Instituto de la Grasa (CSIC), Utrera Road, km 1, 41013, Seville, Spain.
| | - Alfredo Montaño
- Food Biotechnology Department, Instituto de la Grasa (CSIC), Utrera Road, km 1, 41013, Seville, Spain.
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Ruiz-Barba JL, Sánchez AH, López-López A, Cortés-Delgado A, Montaño A. Microbial and Chemical Characterization of Natural-Style Green Table Olives from the Gordal, Hojiblanca and Manzanilla Cultivars. Foods 2023; 12:2386. [PMID: 37372597 DOI: 10.3390/foods12122386] [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: 05/15/2023] [Revised: 06/13/2023] [Accepted: 06/14/2023] [Indexed: 06/29/2023] Open
Abstract
Microbial and biochemical changes in the brine during the spontaneous fermentation of Gordal, Hojiblanca and Manzanilla olive cultivars processed according to the natural style were monitored. The microbial composition was assessed through a metagenomic study. Sugars, ethanol, glycerol, organic acids and phenolic compounds were quantified by standard methods. In addition, the volatile profiles, contents of phenolic compounds in the olives and quality parameters of the final products were compared. Fermentation in Gordal brines was conducted by lactic acid bacteria (mainly Lactobacillus and Pediococcus) and yeasts (mainly Candida boidinii, Candida tropicalis and Wickerhamomyces anomalus). In Hojiblanca and Manzanilla brines, halophilic Gram-negative bacteria (e.g., Halomonas, Allidiomarina and Marinobacter) along with yeasts (mainly, Saccharomyces) were responsible for the fermentation. Higher acidity and lower pH values were reached in Gordal brines compared to Hojiblanca and Manzanilla. After 30 days of fermentation, no sugars were detected in Gordal brine, but residual amounts were found in the brines from Hojiblanca (<0.2 g/L glucose) and Manzanilla (2.9 g/L glucose and 0.2 g/L fructose). Lactic acid was the main acid product in Gordal fermentation, whereas citric acid was the predominant organic acid in the Hojiblanca and Manzanilla brines. Manzanilla brine samples showed a greater concentration of phenolic compounds than Hojiblanca and Gordal brines. After a 6-month fermentation, Gordal olives were superior compared to the Hojiblanca and Manzanilla varieties regarding product safety (lower final pH and absence of Enterobacteriaceae), content of volatile compounds (richer aroma), content of bitter phenolics (lower content of oleuropein, which resulted in less perceived bitterness) and color parameters (more yellow and lighter color, indicating a higher visual appraisal). The results of the present study will contribute to a better understanding of each fermentation process and could help to promote natural-style elaborations using the above-mentioned olive cultivars.
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Affiliation(s)
- José Luis Ruiz-Barba
- Food Biotechnology Department, Instituto de la Grasa (CSIC), Carretera de Utrera, Km. 1, 41013 Seville, Spain
| | - Antonio Higinio Sánchez
- Food Biotechnology Department, Instituto de la Grasa (CSIC), Carretera de Utrera, Km. 1, 41013 Seville, Spain
| | - Antonio López-López
- Food Biotechnology Department, Instituto de la Grasa (CSIC), Carretera de Utrera, Km. 1, 41013 Seville, Spain
| | - Amparo Cortés-Delgado
- Food Biotechnology Department, Instituto de la Grasa (CSIC), Carretera de Utrera, Km. 1, 41013 Seville, Spain
| | - Alfredo Montaño
- Food Biotechnology Department, Instituto de la Grasa (CSIC), Carretera de Utrera, Km. 1, 41013 Seville, Spain
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Alfonzo A, Naselli V, Gaglio R, Settanni L, Corona O, La Croce F, Vagnoli P, Krieger-Weber S, Francesca N, Moschetti G. Use of Different Nutrients to Improve the Fermentation Performances of Lactiplantibacillus pentosus OM13 during the Production of Sevillian Style Green Table Olives. Microorganisms 2023; 11:microorganisms11040825. [PMID: 37110248 PMCID: PMC10146404 DOI: 10.3390/microorganisms11040825] [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: 02/20/2023] [Revised: 03/16/2023] [Accepted: 03/22/2023] [Indexed: 04/29/2023] Open
Abstract
The aim of this study was to evaluate the fermentation performance of the commercial starter Lactiplantibacillus pentosus OM13 with four nutrients (A, B, C, and D) that differed in the following ingredients: starch, sugars, maltodextrin, inactivated yeast, inactivated yeast rich in amino acids, inactivated yeast rich in mannoproteins, and salt (NaCl). For this purpose, six different experimental productions of Nocellara del Belice table olives were carried out. During transformation, the fermentation process was monitored by measuring pH and plate counts for lactic acid bacteria (LAB), yeasts, Enterobacteriaceae, Staphylococcaceae, and Pseudodomondaceae populations. At the end of the production process, each trial was subjected to volatile organic compound analysis and sensory evaluation. The addition of the different nutrients resulted in a significant reduction in pH (around 2.5 points) after 3 days of fermentation. At the same time, a significant increase in the number of LAB populations (> 6.6 log CFU/mL) was observed for all trials. Volatile organic compound (VOC) analysis revealed the presence of 39 compounds. In this study, nutrient C was optimal for improving the fermentation activity of L. pentosus OM13. These results provide elements for the implementation of experimental protocols to reduce product losses and improve sensory characteristics.
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Affiliation(s)
- Antonio Alfonzo
- Department of Agricultural, Food and Forest Sciences (SAAF), University of Palermo, Viale delle Scienze Bldg. 5, Ent. C, 90128 Palermo, Italy
| | - Vincenzo Naselli
- Department of Agricultural, Food and Forest Sciences (SAAF), University of Palermo, Viale delle Scienze Bldg. 5, Ent. C, 90128 Palermo, Italy
| | - Raimondo Gaglio
- Department of Agricultural, Food and Forest Sciences (SAAF), University of Palermo, Viale delle Scienze Bldg. 5, Ent. C, 90128 Palermo, Italy
| | - Luca Settanni
- Department of Agricultural, Food and Forest Sciences (SAAF), University of Palermo, Viale delle Scienze Bldg. 5, Ent. C, 90128 Palermo, Italy
| | - Onofrio Corona
- Department of Agricultural, Food and Forest Sciences (SAAF), University of Palermo, Viale delle Scienze Bldg. 5, Ent. C, 90128 Palermo, Italy
| | - Francesco La Croce
- Geolive Belice S.r.l., S.S. 115 Km dir. Marinella, 91022 Castelvetrano, Italy
| | - Paola Vagnoli
- Lallemand Italia, Via Rossini 14/B, 37060 Castel D'Azzano, Italy
| | - Sibylle Krieger-Weber
- Lallemand, Office Korntal-Münchingen, In den Seiten 53, 70825 Korntal-Münchingen, Germany
| | - Nicola Francesca
- Department of Agricultural, Food and Forest Sciences (SAAF), University of Palermo, Viale delle Scienze Bldg. 5, Ent. C, 90128 Palermo, Italy
| | - Giancarlo Moschetti
- Department of Agricultural, Food and Forest Sciences (SAAF), University of Palermo, Viale delle Scienze Bldg. 5, Ent. C, 90128 Palermo, Italy
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Liu Y, Chen X, Li F, Shi H, He M, Ge J, Ling H, Cheng K. Analysis of Microbial Diversity and Metabolites in Sauerkraut Products with and without Microorganism Addition. Foods 2023; 12:foods12061164. [PMID: 36981091 PMCID: PMC10048197 DOI: 10.3390/foods12061164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 03/06/2023] [Accepted: 03/07/2023] [Indexed: 03/12/2023] Open
Abstract
The microbial compositions and metabolites of fermented sauerkraut with and without the addition of microorganisms have been compared. The OTU clustering, nonvolatile compounds, volatile compounds and associations between bacterial taxa and metabolites were analyzed by 16S rRNA high-throughput sequencing technology, ultra performance liquid chromatography (UPLC), gas chromatography ion mobility mass spectrometry (GC-IMS) and the O2PLS model studies. The results showed that at the phylum level, the microbial species in the four sauerkraut types consisted mainly of the phyla Firmicutes and Proteobacteria, but different modes of microbial addition formed their own unique microbial communities. There were significant differences in the microbial communities among different northeast China sauerkraut samples, and different microbial communities exerted similar effects to inhibit Firmicutes production. At the genus level, sauerkraut without added microorganisms had the lowest microbial diversity. A total of 26 amino acids and 11 organic acids were identified and were more abundant in nonmicrobially fermented sauerkraut; 88 volatile organic compounds were identified in the 4 types of sauerkraut, with the microbially fermented sauerkraut being richer in alcohols, esters and acids. Different brands of sauerkraut contain their own unique flavor compounds. Cystine and tyrosine, ascorbic acid and acetic acid, and alcohols and esters are closely related to a wide range of microorganisms in sauerkraut. Elucidating the correlations among microbiota and metabolites will help guide future improvements in sauerkraut fermentation processes.
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Affiliation(s)
- Yueyi Liu
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Plant Genetic Engineering and Biological Fermentation Engineering for Cold Region & Key Laboratory of Microbiology, College of Heilongjiang Province & School of Life Sciences, Heilongjiang University, Harbin 150080, China; (Y.L.); (H.S.); (M.H.); (J.G.)
| | - Xiaochun Chen
- Engineering Research Center of Health Food Design & Nutrition Regulation, School of Chemical Engineering and Energy Technology, Dongguan University of Technology, Dongguan 523808, China; (X.C.); (F.L.)
- Dongguan Institute of Technology Innovation, Dongguan 523000, China
| | - Fuxiang Li
- Engineering Research Center of Health Food Design & Nutrition Regulation, School of Chemical Engineering and Energy Technology, Dongguan University of Technology, Dongguan 523808, China; (X.C.); (F.L.)
- Dongguan Institute of Technology Innovation, Dongguan 523000, China
| | - Huiling Shi
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Plant Genetic Engineering and Biological Fermentation Engineering for Cold Region & Key Laboratory of Microbiology, College of Heilongjiang Province & School of Life Sciences, Heilongjiang University, Harbin 150080, China; (Y.L.); (H.S.); (M.H.); (J.G.)
| | - Mingyi He
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Plant Genetic Engineering and Biological Fermentation Engineering for Cold Region & Key Laboratory of Microbiology, College of Heilongjiang Province & School of Life Sciences, Heilongjiang University, Harbin 150080, China; (Y.L.); (H.S.); (M.H.); (J.G.)
| | - Jingping Ge
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Plant Genetic Engineering and Biological Fermentation Engineering for Cold Region & Key Laboratory of Microbiology, College of Heilongjiang Province & School of Life Sciences, Heilongjiang University, Harbin 150080, China; (Y.L.); (H.S.); (M.H.); (J.G.)
| | - Hongzhi Ling
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Plant Genetic Engineering and Biological Fermentation Engineering for Cold Region & Key Laboratory of Microbiology, College of Heilongjiang Province & School of Life Sciences, Heilongjiang University, Harbin 150080, China; (Y.L.); (H.S.); (M.H.); (J.G.)
- Correspondence: (H.L.); (K.C.)
| | - Keke Cheng
- Engineering Research Center of Health Food Design & Nutrition Regulation, School of Chemical Engineering and Energy Technology, Dongguan University of Technology, Dongguan 523808, China; (X.C.); (F.L.)
- Correspondence: (H.L.); (K.C.)
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5
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Influence of indigenous Hanseniaspora uvarum and Saccharomyces cerevisiae from sugar-rich substrates on the aromatic composition of loquat beer. Int J Food Microbiol 2022; 379:109868. [DOI: 10.1016/j.ijfoodmicro.2022.109868] [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: 07/06/2022] [Accepted: 07/29/2022] [Indexed: 11/23/2022]
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Effect of sequential or ternary starters-assisted fermentation on the phenolic and glucosinolate profiles of sauerkraut in comparison with spontaneous fermentation. Food Res Int 2022; 156:111116. [DOI: 10.1016/j.foodres.2022.111116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 03/06/2022] [Accepted: 03/08/2022] [Indexed: 11/23/2022]
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7
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Vaccalluzzo A, Celano G, Pino A, Calabrese FM, Foti P, Caggia C, Randazzo C. Metagenetic and Volatilomic Approaches to Elucidate the Effect of Lactiplantibacillus plantarum Starter Cultures on Sicilian Table Olives. Front Microbiol 2022; 12:771636. [PMID: 35281313 PMCID: PMC8914321 DOI: 10.3389/fmicb.2021.771636] [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: 09/06/2021] [Accepted: 12/23/2021] [Indexed: 11/20/2022] Open
Abstract
The present study aimed to evaluate the effect of selected Lactiplantibacillus plantarum strains on both microbiota composition and volatile organic compound profile of Sicilian table olives. Two mixed cultures, named O1 and O2, were set up for pilot-plan scale fermentations at 5% of NaCl. Uninoculated table olives at 5 and 8% (C5 and C8) of salt were used as control. The fermentation process was monitored until 80 days through a dual approach, which included both classical microbiological and 16S amplicon-based sequencing and volatilomics analyses. Compared with control samples (C5 and C8), experimental samples, inoculated with starter cultures (O1 and O2), exhibited a faster acidification with a more pronounced drop in pH. Metagenetics data revealed significant differences of microbiota composition among samples, highlighting the dominance of lactobacilli in both experimental samples; a high occurrence of Enterobacter genus only in control samples with 5% of NaCl; and the presence of Bacteroides, Faecalibacterium, Klebsiella, and Raoultella genera only in control samples with 8% of NaCl. Furthermore, microbiota composition dynamics, through the fermentation process, significantly affected the volatile organic compounds of the final products, whereas no compounds involved in off-odors metabolites were detected in all samples investigated. In conclusion, the addition of the proposed starter cultures and the use of low concentrations of sodium chloride positively affected the microbiota and volatile organic compounds, ensuring the microbiological safety and the pleasant flavors of the final product.
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Affiliation(s)
- Amanda Vaccalluzzo
- Department of Agricultural, Food and Environment, University of Catania, Catania, Italy
| | - Giuseppe Celano
- Department of Soil, Plant and Food Science, University of Bari Aldo Moro, Bari, Italy
| | - Alessandra Pino
- Department of Agricultural, Food and Environment, University of Catania, Catania, Italy
- ProBioEtna srl, Spin-off of University of Catania, Catania, Italy
| | | | - Paola Foti
- Department of Agricultural, Food and Environment, University of Catania, Catania, Italy
| | - Cinzia Caggia
- Department of Agricultural, Food and Environment, University of Catania, Catania, Italy
- ProBioEtna srl, Spin-off of University of Catania, Catania, Italy
| | - Cinzia Randazzo
- Department of Agricultural, Food and Environment, University of Catania, Catania, Italy
- ProBioEtna srl, Spin-off of University of Catania, Catania, Italy
- *Correspondence: Cinzia Randazzo,
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8
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Montaño A, Cortés‐Delgado A, López‐López A, Sánchez AH. Changes in the volatile composition of Spanish‐style green table olives induced by pasteurisation treatment. Int J Food Sci Technol 2021. [DOI: 10.1111/ijfs.15080] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Alfredo Montaño
- Food Biotechnology Department Instituto de la Grasa (CSIC) Utrera road, km 1 Seville 41013 Spain
| | - Amparo Cortés‐Delgado
- Food Biotechnology Department Instituto de la Grasa (CSIC) Utrera road, km 1 Seville 41013 Spain
| | - Antonio López‐López
- Food Biotechnology Department Instituto de la Grasa (CSIC) Utrera road, km 1 Seville 41013 Spain
| | - Antonio Higinio Sánchez
- Food Biotechnology Department Instituto de la Grasa (CSIC) Utrera road, km 1 Seville 41013 Spain
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Alfonzo A, Prestianni R, Gaglio R, Matraxia M, Maggio A, Naselli V, Craparo V, Badalamenti N, Bruno M, Vagnoli P, Settanni L, Moschetti G, Francesca N. Effects of different yeast strains, nutrients and glutathione-rich inactivated yeast addition on the aroma characteristics of Catarratto wines. Int J Food Microbiol 2021; 360:109325. [PMID: 34281717 DOI: 10.1016/j.ijfoodmicro.2021.109325] [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: 04/14/2021] [Revised: 06/28/2021] [Accepted: 06/29/2021] [Indexed: 11/26/2022]
Abstract
Catarratto is one of the most common non-aromatic white grape varieties cultivated in Sicily (Southern Italy). In order to improve the aromatic expression of Catarratto wines a trial was undertaken to investigate the effect of yeast strain, nutrition and reduced glutathione. Variables included two Saccharomyces cerevisiae strains, an oenological strain (GR1) and one isolated from honey by-products (SPF52), three different nutrition regimes (Stimula Sauvignon Blanc™ (SS), Stimula Chardonnay™ (SC) and classic nutrition practice), and a specific inactivated yeast rich in reduced glutathione to prevent oxidative processes [Glutastar™ (GIY)] ensuing in ten treatments (T1-T10). Microbiological and chemical parameters demonstrated the aptitude of strain SPF52 to successfully conduct alcoholic fermentation. During fermentation, the Saccharomyces yeast populations ranged from 7 to 8 logarithmic CFU/mL. All wines had a final ethanol content ranging between 12.91 and 13.85% (v/v). The dominance of the two starter strains over native yeast populations was higher than 97% as estimated by interdelta analysis. The addition of nutrients SS or SC increased the aromatic complexity of the wines as reflected by volatile organic compounds (VOCs) composition and sensory profiles. In particular, 32 VOCs were identified; alcohols (62.46-81.1%), thiols (0.27-0.87%), ethers (0.09-0.16%), aldehydes (0-1.21%), ketones (0-2.28%), carboxylic acids (4.21-12.32%), esters (0-10.85%), lactones (0.9-1.49%) and other compounds (0.77-6.9%). Sensory analysis demonstrated a significant impact on wine aroma in relation to yeast starter strain used, the type of nutrition (SS, SC or classic nutrition) and the presence/absence of GIY. The wines produced with GR1 yeast strain and SS (T2), SPF52 with SC (T9) both in presence of GIY showed higher overall quality. Trials T2 and T9 showed the highest scores for 13 and 18 attributes, respectively. The different nutrition, addition of GIY and the yeast starter strains diversified and enhanced sensory expression of Catarratto wines.
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Affiliation(s)
- Antonio Alfonzo
- Department of Agricultural, Food and Forest Science, University of Palermo, Viale delle Scienze 4, 90128 Palermo, Italy
| | - Rosario Prestianni
- Department of Agricultural, Food and Forest Science, University of Palermo, Viale delle Scienze 4, 90128 Palermo, Italy
| | - Raimondo Gaglio
- Department of Agricultural, Food and Forest Science, University of Palermo, Viale delle Scienze 4, 90128 Palermo, Italy
| | - Michele Matraxia
- Department of Agricultural, Food and Forest Science, University of Palermo, Viale delle Scienze 4, 90128 Palermo, Italy
| | - Antonella Maggio
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Viale delle Scienze, Parco d'Orleans II, Palermo, building 17, Italy
| | - Vincenzo Naselli
- Department of Agricultural, Food and Forest Science, University of Palermo, Viale delle Scienze 4, 90128 Palermo, Italy
| | - Valentina Craparo
- Department of Agricultural, Food and Forest Science, University of Palermo, Viale delle Scienze 4, 90128 Palermo, Italy
| | - Natale Badalamenti
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Viale delle Scienze, Parco d'Orleans II, Palermo, building 17, Italy
| | - Maurizio Bruno
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Viale delle Scienze, Parco d'Orleans II, Palermo, building 17, Italy
| | - Paola Vagnoli
- Lallemand Italia, Via Rossini 14/B, 37060, Castel D'Azzano, VR, Italy
| | - Luca Settanni
- Department of Agricultural, Food and Forest Science, University of Palermo, Viale delle Scienze 4, 90128 Palermo, Italy
| | - Giancarlo Moschetti
- Department of Agricultural, Food and Forest Science, University of Palermo, Viale delle Scienze 4, 90128 Palermo, Italy
| | - Nicola Francesca
- Department of Agricultural, Food and Forest Science, University of Palermo, Viale delle Scienze 4, 90128 Palermo, Italy.
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Use of Kluyveromyces marxianus to Increase Free Monoterpenes and Aliphatic Esters in White Wines. FERMENTATION 2021. [DOI: 10.3390/fermentation7020079] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
An increasing interest in novel wine productions is focused on non-Saccharomyces yeasts due to their potential in improving sensory profiles. Although Kluyveromyces marxianus has been originally isolated from grapes and its enzymatic activities are used in oenology, rarely it has been used as co-starter. The K. marxianus Km L2009 strain has been characterized here and selected as a co-starter both at laboratory- and winery-scale fermentation. The Km L2009 strain showed growth of up to 40 (mg/L) of sulfites and 6% (v/v) of ethanol. Gas chromatographic analysis demonstrates that wines produced by mixed fermentation contain remarkably higher quantities of free monoterpenes and aliphatic esters than wines produced only by commercial strains of Saccharomyces cerevisiae. Differences in the volatile organic compound composition produced sensorially distinct wines. In light of these results, it is possible to state that even within the K. marxianus species it is possible to select strains capable of improving the aromatic quality of wines.
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11
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Comparison of northeast sauerkraut fermentation between single lactic acid bacteria strains and traditional fermentation. Food Res Int 2020; 137:109553. [DOI: 10.1016/j.foodres.2020.109553] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 07/10/2020] [Accepted: 07/11/2020] [Indexed: 12/18/2022]
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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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A Review on Adventitious Lactic Acid Bacteria from Table Olives. Foods 2020; 9:foods9070948. [PMID: 32709144 PMCID: PMC7404733 DOI: 10.3390/foods9070948] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 07/10/2020] [Accepted: 07/15/2020] [Indexed: 12/18/2022] Open
Abstract
Spontaneous fermentation constitutes the basis of the chief natural method of processing of table olives, where autochthonous strains of lactic acid bacteria (LAB) play a dominant role. A thorough literature search has unfolded 197 reports worldwide, published in the last two decades, that indicate an increasing interest in table olive-borne LAB, especially in Mediterranean countries. This review attempted to extract extra information from such a large body of work, namely, in terms of correlations between LAB strains isolated, manufacture processes, olive types, and geographical regions. Spain produces mostly green olives by Spanish-style treatment, whereas Italy and Greece produce mainly green and black olives, respectively, by both natural and Spanish-style. More than 40 species belonging to nine genera of LAB have been described; the genus most often cited is Lactobacillus, with L. plantarum and L. pentosus as most frequent species—irrespective of country, processing method, or olive type. Certain LAB species are typically associated with cultivar, e.g., Lactobacillus parafarraginis with Spanish Manzanilla, or L. paraplantarum with Greek Kalamata and Conservolea, Portuguese Galega, and Italian Tonda di Cagliari. Despite the potential of native LAB to serve as starter cultures, extensive research and development efforts are still needed before this becomes a commercial reality in table olive fermentation.
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Table Olives: An Overview on Effects of Processing on Nutritional and Sensory Quality. Foods 2020; 9:foods9040514. [PMID: 32325961 PMCID: PMC7231206 DOI: 10.3390/foods9040514] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 04/09/2020] [Accepted: 04/13/2020] [Indexed: 12/17/2022] Open
Abstract
Table olives are a pickled food product obtained by a partial/total debittering and subsequent fermentation of drupes. Their peculiar sensory properties have led to a their widespread use, especially in Europe, as an appetizer or an ingredient for culinary use. The most relevant literature of the last twenty years has been analyzed in this review with the aim of giving an up-to-date overview of the processing and storage effects on the nutritional and sensory properties of table olives. Analysis of the literature has revealed that the nutritional properties of table olives are mainly influenced by the processing method used, even if preharvest-factors such as irrigation and fruit ripening stage may have a certain weight. Data revealed that the nutritional value of table olives depends mostly on the balanced profile of polyunsaturated and monounsaturated fatty acids and the contents of health-promoting phenolic compounds, which are best retained in natural table olives. Studies on the use of low salt brines and of selected starter cultures have shown the possibility of producing table olives with an improved nutritional profile. Sensory characteristics are mostly process-dependent, and a relevant contribute is achieved by starters, not only for reducing the bitterness of fruits, but also for imparting new and typical taste to table olives. Findings reported in this review confirm, in conclusion, that table olives surely constitute an important food source for their balanced nutritional profile and unique sensory characteristics.
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15
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Boyaci Gunduz CP, Gaglio R, Franciosi E, Settanni L, Erten H. Molecular analysis of the dominant lactic acid bacteria of chickpea liquid starters and doughs and propagation of chickpea sourdoughs with selected Weissella confusa. Food Microbiol 2020; 91:103490. [PMID: 32539978 DOI: 10.1016/j.fm.2020.103490] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 03/16/2020] [Accepted: 03/17/2020] [Indexed: 12/11/2022]
Abstract
Fermented chickpea liquid is used as a leavening agent in chickpea bread production. In the present study, traditional chickpea liquid starter and dough samples were collected from bakeries in Turkey and microbiologically investigated. Culture-independent analysis for microbiota diversity, performed by MiSeq Illumina, identified Clostridium perfringens as major group in all samples, while Weissella spp. Dominated LAB community. A culture-dependent methodology was applied and 141 isolates were confirmed to be members of the LAB group based on 16s rRNA gene sequence analysis. In particular, 11 different LAB species were identified confirming the high frequency of isolation of weissellas, since Weissella confusa and Weissella cibaria constituted 47.8 and 12.4%, respectively, of total LAB isolated. The other species were Enterococcus faecium, Enterococcus lactis, Lactobacillus brevis, Lactobacillus plantarum, Leuconostoc mesenteroides, Leuconostoc mesenteroides subsp. Dextranium, Pediococcus acidilactici, Pediococcus pentosaceus and Streptococcus lutetiensis. Due to high frequency of isolation, W. confusa strains were investigated at technological level and W. confusa RL1139 was used as mono-culture starter in the experimental chickpea sourdough production. Chemical and microbiological properties, as well as volatile organic compounds (VOCs) of the chickpea liquid starters and doughs were subjected to a multivariate analysis. Control and W. confusa inoculated chickpea liquid starter and dough samples were close to each other in terms of some characteristics related to chemical, microbiological and VOCs profile, but the inoculated sourdough showed a higher generation of certain VOCs, like butanoic acid (81.52%) and ethyl acetate (8.15%) than control sourdough. This is important in order to maintain typical characteristics of the traditional chickpea dough, but at the same time improving the aroma profile. This work demonstrated that W. confusa RL1139 can be applied at large scale production level without compromising the typical characteristics of the final product.
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Affiliation(s)
| | - Raimondo Gaglio
- Dipartimento Scienze Agrarie, Alimentari e Forestali, Università degli Studi di Palermo, Viale delle Scienze 4, 90128, Palermo, Italy
| | - Elena Franciosi
- Research and Innovation Centre, Fondazione Edmund Mach (FEM), Via E. Mach 1, San Michele all'Adige, Italy
| | - Luca Settanni
- Dipartimento Scienze Agrarie, Alimentari e Forestali, Università degli Studi di Palermo, Viale delle Scienze 4, 90128, Palermo, Italy
| | - Huseyin Erten
- Cukurova University, Faculty of Agriculture, Department of Food Engineering, 01330, Adana, Turkey.
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16
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Perpetuini G, Prete R, Garcia-Gonzalez N, Khairul Alam M, Corsetti A. Table Olives More than a Fermented Food. Foods 2020; 9:E178. [PMID: 32059387 PMCID: PMC7073621 DOI: 10.3390/foods9020178] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 02/05/2020] [Accepted: 02/07/2020] [Indexed: 12/31/2022] Open
Abstract
Table olives are one of the oldest vegetable fermented foods in the Mediterranean area. Beside their economic impact, fermented table olives represent also an important healthy food in the Mediterranean diet, because of their high content of bioactive and health-promoting compounds. However, olive fermentation is still craft-based following traditional processes, which can lead to a not fully predictable final product with the risk of spontaneous alterations. Nowadays, food industries have to face consumer demands for safe and healthy products. This review offers an overview about the main technologies used for olive fermentation and the role of lactic acid bacteria and yeasts characterizing this niche during the fermentation. Particular attention is offered to the selection and use of microorganisms as starter cultures to fasten and improve the safety of table olives. The development and implementation of multifunctional starter cultures in order to obtain heath-oriented table olives is also discussed.
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Affiliation(s)
| | | | | | | | - Aldo Corsetti
- Faculty of BioScience and Technology for Food, Agriculture and Environment, University of Teramo, 641000 Teramo, Italy; (G.P.); (R.P.); (N.G.-G.); (M.K.A.)
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17
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López-López A, Cortés-Delgado A, de Castro A, Sánchez AH, Montaño A. Changes in volatile composition during the processing and storage of black ripe olives. Food Res Int 2019; 125:108568. [PMID: 31554036 DOI: 10.1016/j.foodres.2019.108568] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 07/05/2019] [Accepted: 07/18/2019] [Indexed: 12/11/2022]
Abstract
The present study revealed the effects of each step of black ripe olive processing (preservation, darkening, packing + sterilization) and storage on the volatile composition of two olive cultivars (Manzanilla and Hojiblanca). The preservation step enriched the volatile profile of the olives, mainly in ethyl acetate, methyl acetate, and ethanol. The darkening step produced the total or partial elimination of 55-65% of the volatiles identified before this step. Around 70% of the volatiles in the final products corresponded to compounds that were formed or increased significantly as a result of the sterilization treatment at 121 °C. Although differences in the volatile compositions and contents between Manzanilla and Hojiblanca were found, the dominant volatiles in both cultivars were benzaldehyde, dimethyl sulfide and ethyl acetate. Storage for 8 months had little influence on their volatile profiles, although the stability of individual volatiles in Manzanilla was better than that in the Hojiblanca cultivar.
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Affiliation(s)
- Antonio López-López
- Food Biotechnology Department, Instituto de la Grasa-CSIC, Utrera road, km 1, 41013 Seville, Spain.
| | - Amparo Cortés-Delgado
- Food Biotechnology Department, Instituto de la Grasa-CSIC, Utrera road, km 1, 41013 Seville, Spain.
| | - Antonio de Castro
- Food Biotechnology Department, Instituto de la Grasa-CSIC, Utrera road, km 1, 41013 Seville, Spain.
| | - Antonio Higinio Sánchez
- Food Biotechnology Department, Instituto de la Grasa-CSIC, Utrera road, km 1, 41013 Seville, Spain.
| | - Alfredo Montaño
- Food Biotechnology Department, Instituto de la Grasa-CSIC, Utrera road, km 1, 41013 Seville, Spain.
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18
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Benítez-Cabello A, Calero-Delgado B, Rodríguez-Gómez F, Garrido-Fernández A, Jiménez-Díaz R, Arroyo-López FN. Biodiversity and Multifunctional Features of Lactic Acid Bacteria Isolated From Table Olive Biofilms. Front Microbiol 2019; 10:836. [PMID: 31057529 PMCID: PMC6479189 DOI: 10.3389/fmicb.2019.00836] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 04/01/2019] [Indexed: 01/24/2023] Open
Abstract
In the present study, a total of 554 lactic acid bacteria (LAB) isolates were obtained from the olive surface of Manzanilla, Gordal, and Aloreña cultivars processed as green Spanish-style or directly brined (natural) olives. The isolates obtained from industrial processes were genotyped by rep-PCR with primer GTG5, collecting a total of 79 different genotypes. The α-biodiversity indexes showed that the LAB diversity was higher in the biofilms on the fruits which followed the Spanish-style process than in those just brined. Sixteen genotypes had a frequency higher >1% and were identified, by multiplex PCR recA gene and 16S gene sequencing, as belonging to Lactobacillus pentosus (n = 13) and Lactobacillus plantarum (n = 3) species. A multivariate analysis based on a dataset with 89,744 cells, including technological (resistance to salt and pH, production of lactic acid, auto and co-aggregation with yeast species, β-glucosidase and esterase activities), and potential probiotic characteristics (survival to gastric and pancreatic digestions, resistance to antibiotics, inhibition of pathogens, presence of bsh genes, cholesterol removal, hemolytic, α-glucosidase, β-galactosidase, and phytase activities) showed that the 16 genotypes could be grouped into 3 great phenotypes. Thus, the genotype biodiversity in table olive biofilms was limited but, at phenotype level, it was even lower since L. pentosus predominated clearly (80.15% isolates). L. pentosus Lp13 was the genotype with the most promising characteristics for its use as a multifunctional starter, with this strain being and ubiquitous microorganism present in both natural and lye-treated olive fermentations.
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Affiliation(s)
- Antonio Benítez-Cabello
- Department of Food Biotechnology, Instituto de la Grasa, Agencia Estatal Consejo Superior de Investigaciones Científicas, Pablo de Olavide University, Seville, Spain
| | - Beatriz Calero-Delgado
- Department of Food Biotechnology, Instituto de la Grasa, Agencia Estatal Consejo Superior de Investigaciones Científicas, Pablo de Olavide University, Seville, Spain
| | - Francisco Rodríguez-Gómez
- Department of Food Biotechnology, Instituto de la Grasa, Agencia Estatal Consejo Superior de Investigaciones Científicas, Pablo de Olavide University, Seville, Spain
| | - Antonio Garrido-Fernández
- Department of Food Biotechnology, Instituto de la Grasa, Agencia Estatal Consejo Superior de Investigaciones Científicas, Pablo de Olavide University, Seville, Spain
| | - Rufino Jiménez-Díaz
- Department of Food Biotechnology, Instituto de la Grasa, Agencia Estatal Consejo Superior de Investigaciones Científicas, Pablo de Olavide University, Seville, Spain
| | - Francisco Noé Arroyo-López
- Department of Food Biotechnology, Instituto de la Grasa, Agencia Estatal Consejo Superior de Investigaciones Científicas, Pablo de Olavide University, Seville, Spain
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19
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Pino A, Vaccalluzzo A, Solieri L, Romeo FV, Todaro A, Caggia C, Arroyo-López FN, Bautista-Gallego J, Randazzo CL. Effect of Sequential Inoculum of Beta-Glucosidase Positive and Probiotic Strains on Brine Fermentation to Obtain Low Salt Sicilian Table Olives. Front Microbiol 2019; 10:174. [PMID: 30800110 PMCID: PMC6376858 DOI: 10.3389/fmicb.2019.00174] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 01/22/2019] [Indexed: 11/13/2022] Open
Abstract
In the present study, the β-glucosidase positive strain Lactobacillus plantarum F3. 3 was used as starter during the fermentation of Sicilian table olives (Nocellara Etnea cultivar) at two different salt concentrations (5 and 8%), in order to accelerate the debittering process. The latter was monitored through the increase of hydroxytyrosol compound. In addition, the potential probiotic Lactobacillus paracasei N24 strain was added after 60 days of fermentation. Un-inoculated brine samples at 5 and 8% of salt were used as control. The fermentation was monitored till 120 days through physico-chemical and microbiological analyses. In addition, volatile organic compounds and sensorial analyses were performed during the process and at the end of the fermentation, respectively. Lactic acid bacteria and yeasts were, in depth, studied by molecular methods and the occurrence of the potential probiotic N24 strain in the final products was determined. Results highlighted that inoculated brines exhibited a higher acidification and debittering rate than control ones. In addition, inoculated brines at 5% of salt exhibited higher polyphenols (hydoxytyrosol, tyrosol, and verbascoside) content compared to samples at 8% of NaCl, suggesting a stronger oleuropeinolytic activity of the starter at low salt concentration. Lactobacilli and yeasts dominated during the fermentation process, with the highest occurrence of L. plantarum and Wickerhamomyces anomalus, respectively. Moreover, the potential probiotic L. paracasei N24 strain was able to survive in the final product. Hence, the sequential inoculum of beta-glucosidase positive and potential probiotic strains could be proposed as a suitable technology to produce low salt Sicilian table olives.
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Affiliation(s)
- Alessandra Pino
- Department of Agricultural, Food and Environment, University of Catania, Catania, Italy
| | - Amanda Vaccalluzzo
- Department of Agricultural, Food and Environment, University of Catania, Catania, Italy
| | - Lisa Solieri
- Department of Life Sciences, University of Modena and Reggio Emilia, Reggio Emilia, Italy
| | - Flora V Romeo
- Council for Agricultural Research and Economics, Research Centre for Olive, Citrus and Tree Fruit, Acireale, Italy
| | - Aldo Todaro
- Department of Agricultural, Food and Forest Science, University of Palermo, Palermo, Italy
| | - Cinzia Caggia
- Department of Agricultural, Food and Environment, University of Catania, Catania, Italy
| | - Francisco Noé Arroyo-López
- Food Biotechnology Department, Instituto de la Grasa, Consejo Superior de Investigaciones Científicas, Universidad Pablo de Olavide, Seville, Spain
| | - Joaquin Bautista-Gallego
- Food Biotechnology Department, Instituto de la Grasa, Consejo Superior de Investigaciones Científicas, Universidad Pablo de Olavide, Seville, Spain
| | - Cinzia L Randazzo
- Department of Agricultural, Food and Environment, University of Catania, Catania, Italy
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20
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Effect of Spanish-style processing steps and inoculation with Lactobacillus pentosus starter culture on the volatile composition of cv. Manzanilla green olives. Food Chem 2019; 271:543-549. [DOI: 10.1016/j.foodchem.2018.07.166] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 07/10/2018] [Accepted: 07/24/2018] [Indexed: 11/20/2022]
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21
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Alfonzo A, Martorana A, Settanni L, Matraxia M, Corona O, Vagnoli P, Caruso T, Moschetti G, Francesca N. Approaches to improve the growth of the starter lactic acid bacterium OM13 during the early stages of green Spanish-style table olive production. GRASAS Y ACEITES 2018. [DOI: 10.3989/gya.0103181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The present research aimed at determining the optimal conditions for the lactic acid fermentation of green Spanish-style table olives. The work is a follow-up, and focuses on the performance of the commercial starter strain Lactobacillus pentosus OM13 by applying an acclimatization step and the addition of nutrients, and concentrations of lactic acid that were previously investigated. The acclimatization of the cells warranted the dominance of the starter culture even at an inoculation level of 2 Log cycles lower than that commonly used in standard fermentation. A significant effect was found in terms of acidification kinetics within the first week of fermentation, with the highest decrease in pH, at ~2.5 units, which occurred in the trial and after inoculation with 106 CFU/mL of starter after acclimatation (EO3) that showed values similar to control C obtained with Lactobacillus pentosus OM13 at a concentration of 107 CFU/mL. After day 3, further decreases in pH of up to 4.30 were observed until day 30, and then these values remained almost constant until the end of process (day 190) when lower pH values were reached for trial EO3 and control C. The results of microbiological dynamics, the changes in VOCs and finally the effect of the processes on the sensory analysis of the fermented product were investigated by multivariate analysis. The acclimatization process and the initial inoculation level influenced the bacterial microflora, aromatic compounds and organoleptic characteristics of the final product. Finally, the trials C, EO2 and EO3 showed higher values (60-80%) of preferences and satisfaction compared to other experimental productions.
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22
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Perpetuini G, Caruso G, Urbani S, Schirone M, Esposto S, Ciarrocchi A, Prete R, Garcia-Gonzalez N, Battistelli N, Gucci R, Servili M, Tofalo R, Corsetti A. Changes in Polyphenolic Concentrations of Table Olives (cv. Itrana) Produced Under Different Irrigation Regimes During Spontaneous or Inoculated Fermentation. Front Microbiol 2018; 9:1287. [PMID: 29963031 PMCID: PMC6013719 DOI: 10.3389/fmicb.2018.01287] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Accepted: 05/28/2018] [Indexed: 11/13/2022] Open
Abstract
Irrigation is widely used for the production of table olives because it increases fruit size and yield. However, irrigation also determines less accumulation of total phenols, an increase in water content, a decrease of firmness, lower concentrations of soluble sugars in the mesocarp, thus positively or negatively affecting the fermentation process for the production of table olives. In this study we tested the hypothesis that green fruits of cultivar Itrana obtained by different irrigation regimes had different phenolic concentration that responded differentially to spontaneous or inoculated fermentation. Fruits were harvested from two orchards in the Latina province of Latium, Italy, which had been irrigated with different volumes of water during the growing season to compare the evolution of spontaneous and inoculated fermentation processes. We measured fruit characteristics at harvest, changes in the concentrations of secoiridoids and lignans, and main microbial groups abundance during fermentation. At harvest and during fermentation the concentration of phenolic compounds was higher in fruits sampled from trees that had received less water in the field. Differences were observed between spontaneous and inoculated fermentations, with a prevalence of lactic acid bacteria (LAB) in inoculated samples. In particular, oleuropein concentration completely disappeared only from samples inoculated with the two selected strains used as starters. The inoculum with selected LAB positively influenced the fermentation process of green olives, whereas the irrigation regime previously experienced by trees did not alter fermentation.
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Affiliation(s)
- Giorgia Perpetuini
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Giovanni Caruso
- Department of Agriculture Food and Environment, University of Pisa, Pisa, Italy
| | - Stefania Urbani
- Department of Agricultural Food and Environmental Sciences-DSA3, University of Perugia, Perugia, Italy
| | - Maria Schirone
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Sonia Esposto
- Department of Agricultural Food and Environmental Sciences-DSA3, University of Perugia, Perugia, Italy
| | - Aurora Ciarrocchi
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Roberta Prete
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Natalia Garcia-Gonzalez
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Noemi Battistelli
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Riccardo Gucci
- Department of Agriculture Food and Environment, University of Pisa, Pisa, Italy
| | - Maurizio Servili
- Department of Agricultural Food and Environmental Sciences-DSA3, University of Perugia, Perugia, Italy
| | - Rosanna Tofalo
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Aldo Corsetti
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
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23
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Chranioti C, Kotzekidou P, Gerasopoulos D. Effect of starter cultures on fermentation of naturally and alkali-treated cv. Conservolea green olives. Lebensm Wiss Technol 2018. [DOI: 10.1016/j.lwt.2017.11.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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24
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Porru C, Rodríguez-Gómez F, Benítez-Cabello A, Jiménez-Díaz R, Zara G, Budroni M, Mannazzu I, Arroyo-López FN. Genotyping, identification and multifunctional features of yeasts associated to Bosana naturally black table olive fermentations. Food Microbiol 2018; 69:33-42. [DOI: 10.1016/j.fm.2017.07.010] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 07/10/2017] [Accepted: 07/16/2017] [Indexed: 01/06/2023]
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25
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Gaglio R, Alfonzo A, Francesca N, Corona O, Di Gerlando R, Columba P, Moschetti G. Production of the Sicilian distillate “ Spiritu re fascitrari ” from honey by-products: An interesting source of yeast diversity. Int J Food Microbiol 2017; 261:62-72. [DOI: 10.1016/j.ijfoodmicro.2017.09.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Revised: 08/08/2017] [Accepted: 09/08/2017] [Indexed: 10/18/2022]
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26
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Randazzo CL, Todaro A, Pino A, Pitino I, Corona O, Caggia C. Microbiota and metabolome during controlled and spontaneous fermentation of Nocellara Etnea table olives. Food Microbiol 2017; 65:136-148. [DOI: 10.1016/j.fm.2017.01.022] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 01/12/2017] [Accepted: 01/28/2017] [Indexed: 01/25/2023]
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