Evaluation of food microbiome is of major importance since it accounts for the product's organoleptic characteristics and their nutritional value. In this dataset, microbes present in olive samples ('Kalamata' variety) stored under modified atmosphere and throughout different time-points of the shelf life of the product are presented, originated after 16S and 18S rRNA sequencing. The different time-points analyzed were: T0 (immediately after packaging), T6 (six months of storage), T12 (12 months of storage) and T18 (six months after the end of shelf life). Sequencing was performed on a MiSeq platform with the MiSeq Reagent Kit v3 (600 cycles). The raw sequence data used for analysis are available in NCBI under the Sequence Read Archive (SRA), with BioProject ID PRJNA688686. Raw reads were analyzed using the QIIME2 pipeline, clustered into Operational Taxonomic Units (OTU) and aligned against SILVA 132 reference database. OTUs are presented in different taxonomic levels for each time-point. These data present valuable information on the microbial communities of table olives, a dynamic niche that affect the final product quality. The data presented are related to the research article "Insights into the evolution of Greek style table olives microbiome stored under modified atmosphere: biochemical implications on the product quality" [1].
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http://dx.doi.org/10.1016/j.dib.2021.107314 | DOI Listing |
Methods Mol Biol
January 2025
NMR Laboratory, Chemistry Department, University of Crete, Heraklion, Crete, Greece.
High Resolution-Magic Angle Spinning (HR-MAS) solid-state NMR spectroscopy is finding increasing application in the analysis of solid foods, bypassing the need for complicated solvent extraction procedures. In the present protocol, we report a simple analytical approach based on HR-MAS NMR spectroscopy for the phenolic profiling of olive fruits, flesh, or skin. This approach allows the facile characterization of phenolic compounds in olive fruits cultivated for extra-virgin olive oil production as a function of maturation and variety, in addition to processing technology for table olives.
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December 2024
Instituto de la Grasa (IG), CSIC, Campus Universitario Pablo de Olavide, Edificio 46, Ctra. Utrera km 1, 41013 Sevilla, Spain.
Table olive processing implies losses of mineral nutrients and increased sodium levels due to using brine during fermentation and storage. This study investigated fortifying traditional table olives with mixtures of KCl, CaCl, and MgCl during packaging to enhance mineral content while reducing NaCl. This research analyses the distribution of cations between olives and brines and employed the Response Surface Methodology (RSM) to model mineral content and their contributions to the Reference Daily Intake (RDI).
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December 2024
Food Biotechnology Department, Instituto de la Grasa (CSIC) Campus Universitario Pablo de Olavide Seville Spain.
The process of biofilm formation during table olive fermentation is crucial to turning this fermented vegetable into a probiotic food. Some phenolic compounds have been described as important quorum-sensing molecules during biofilm development. The present in vitro study examined the effects of three phenolic compounds widely found in table olive fermentations (Oleuropein 0-3000 ppm, Hydroxytyrosol 0-3000 ppm, and Tyrosol 0-300 ppm) on the development of single biofilm by diverse microorganisms isolated from table olives ( 13B4, Lp119, and LPG1; Lp15 and LAB23; and yeasts Y12, Y13, and Y18).
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November 2024
Department of Agricultural, Environmental and Food Sciences, University of Molise, Via de Sanctis, I-86100 Campobasso, Italy.
The aim of this work was to study the fermentation of black table olives under slightly pressurized CO (spCO). The olives were marinated in brine with a low salt content and processed using both the traditional two-phase method and a new single-phase method. SpCO is a new technical tool, positively tested in previous studies on the production of low-salt table olive, as a third barrier to microbial growth in brine.
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November 2024
CIMEDES Research Center (CeiA3), Department of Engineering, University of Almería, Almeria, Spain
Background: Spain has the largest olive-growing area in Europe. The goal of the present research is to evaluate the psychosocial risks faced by workers in the olive groves of Jaén (the largest olive grove region of Spain).
Method: This method consists of 15 questions that analyse a total of 12 variables (mental load, demands, health, etc).
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