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Multi-Statistical Approach for the Study of Volatile Compounds of Industrial Spoiled Manzanilla Spanish-Style Table Olive Fermentations

AuthorsGarrido Fernández, A. CSIC ORCID ; Montaño, Alfredo CSIC ORCID ; Cortés Delgado, Amparo CSIC ORCID ; Rodríguez-Gómez, Francisco J. CSIC ORCID ; Arroyo López, Francisco Noé CSIC ORCID
KeywordsGreen Spanish-style olives
Volatile compounds
Compositional data analysis
Statistical analysis
Issue Date24-May-2021
PublisherMultidisciplinary Digital Publishing Institute
CitationFoods 10 (6): 1182 (2021)
AbstractTable olives can suffer different types of spoilage during fermentation. In this work, a multi-statistical approach (standard and compositional data analysis) was used for the study of the volatile organic compounds (VOCs) associated with altered (butyric, sulfidic, and putrid) and non-altered (normal) Manzanilla Spanish-style table olive fermentations. Samples were collected from two industrial fermentation yards in Seville (Spain) in the 2019/2020 season. The VOC profiles of altered (n = 4) and non-altered (n = 6) samples were obtained by headspace solid-phase microextraction combined with gas chromatography-mass spectrometry (HS-SPME-GC-MS). Ninety-one VOCs were identified and grouped into alcohols (30), esters (21), carbonyl compounds (12), acids (10), terpenes (6), phenols (6), sulfur compounds (2), and others (4). The association of the VOCs with spoilage samples depended on the standard or compositional statistical methodology used. However, butyric spoilage was strongly linked by several techniques to methyl butanoate, ethyl butanoate, and butanoic acid; sulfidic spoilage with 2-propyl-1-pentanol, dimethyl sulfide, methanol, 2-methylbutanal, 2-methyl-2-butenal, ethanol, 2-methyl-3-buten-2-ol, and isopentanol, while putrid was mainly related to D-limonene and 2-pentanol. Our data contribute to a better characterisation of non-zapatera spoiled table olive fermentations and show the convenience of using diverse statistical techniques for a most robust selection of spoilage VOC markers.
Description21 Pa´ginas.-- 10 Figuras.-- 3 Tablas
Publisher version (URL)http://dx.doi.org/10.3390/foods10061182
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