Effect of an active bio-package extruded with oregano essential oil in lettuce nutrient profile

Autor: Maisanaba Sara, Llana Ruiz-Cabello, M., Puerto Rodríguez, María, Pichardo, S., González-Vila, Francisco Javier, Bermúdez Saldaña, José María, Aucejo, S., Cameán Fernández, A. M., González-Pérez, José Antonio
Přispěvatelé: European Commission, Junta de Andalucía
Rok vydání: 2016
Zdroj: Digital.CSIC. Repositorio Institucional del CSIC
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Popis: Due to its bioactive properties, oregano essential oil (OEO) is being included in new food packaging materials. However, due to essential oils (EOs) high volatility, ageing and conditions of films preparation may cause losses and diminish the activity, Analytical pyrolysis (Py-GC/MS) is a tool providing fingerprinting and precise information about composition, quality and additives in active packages made with biogenic polymers, In a previous work, we used Py-GC/MS combined with d13C analysis to ensure that no appreciable EO losses occurred when our polylactic acid (PLA) polybutylene succinate (PBS) (95:5) films containing OEO were developed. We confirmed that the OEO remained in adequate quantities and bioactive after the extrusion process. In a subsequent study, the effect of this bio-package in lettuce shelf life and its effect in the chemical composition of the food that contains was evaluated, and specifically in the conservation of specific compounds with dietetic value. In this work we describe a detailed Py-GC/MS study performed to detect changes in the relative contents of polyunsaturated fatty acids (PUFAs) and phytosterols in iceberg lettuce after 1, 4 and 8 days packaged in PLAlPBS (95:5) films containing different quantities of OEO (O , 2, 5 and 10%). Our results indicate that films containing any quantity of OEO, used in packages with a proportion of 5.5 9 of film/kg lettuce, allow maintaining the profile of lettuce PUFAs and phytosterols during the shelf life of the packed food.
Projects AGL2012-38357-C02-01 and CGL2012-38655-C04-01, cofinanced by FEDER. María Llana-Ruiz-Cabello acknowledges Junta de Andalucia predoctoral grant associated to AGR7252 project.
Databáze: OpenAIRE
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