title: Pigment, physicochemical, and microbiological changes related to the freshness of cracked table olives.
abstract: The changes in chloroplastic pigments, mineral nutrients, and characteristics related to freshness were studied during storage and packing of cracked seasoned olives. Cracking produced an initial loss in green pigments and color degradation. Later, storage caused a progressive degradation of chlorophylls and carotenoids, with a slower rate in refrigerated fruits (which preserved the greenish tones better), but after packing (and storage at room temperature), the differential effect disappeared and, at the end of the study, all olives showed similar pigment transformations, which were correlated with CIE a* and hue. Processing led to a Na content increase in olive flesh (and Ca and Zn, when added) but marked losses in the other mineral nutrients. Sodium metabisulfite and ZnCl₂ promoted LAB growth while inhibiting yeast, thus enhancing product stability, and erythorbic acid caused yeast growth and firmness deterioration.
authors.affiliation: Departamento de Biotecnología de Alimentos, Instituto de la Grasa (CSIC), Seville, Spain.
authors.forename: Lourdes
authors.initials: L
authors.lastname: Gallardo-Guerrero
authors.forename: Beatriz
authors.initials: B
authors.lastname: Gandul-Rojas
authors.forename: J M
authors.initials: JM
authors.lastname: Moreno-Baquero
authors.forename: Antonio
authors.initials: A
authors.lastname: López-López
authors.forename: Joaquín
authors.initials: J
authors.lastname: Bautista-Gallego
authors.forename: Antonio
authors.initials: A
authors.lastname: Garrido-Fernández
mesh_terms: D055598:Chemical Phenomena; D005511:Food Handling; D063427:Food Quality; D061353:Food Storage; D057141:Food, Preserved / Q000032:analysis* / Q000382:microbiology; D005638:Fruit / Q000737:chemistry* / Q000382:microbiology; D056546:Lactobacillales / Q000254:growth & development / Q000302:isolation & purification; D031658:Olea / Q000737:chemistry* / Q000382:microbiology; D010860:Pigments, Biological / Q000032:analysis*; D013030:Spain
chemical_list: D010860:Pigments, Biological