Encapsulated thyme (Thymus vulgaris) essential oil used as a natural preservative in bakery product

The objective of this work was to design a particle using thyme (Thymus vulgaris) essential oil through complex coacervation. In vitro activity against bacteria and molds of free oil as well as the encapsulated oil was verified and then in situ assay was done. The free thyme oil presented high in vi...

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Published in:Food research international 2017-06, Vol.96, p.154-160
Main Authors: Gonçalves, Nathalia Dias, Pena, Fabíola de Lima, Sartoratto, Adilson, Derlamelina, Camila, Duarte, Marta Cristina Teixeira, Antunes, Adriane Elisabete Costa, Prata, Ana Silvia
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Language:English
Subjects:
Complex coacervation
Food spoilage
Fungi
Natural food preservative
Thyme oil
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container_title Food research international
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creator Gonçalves, Nathalia Dias
Pena, Fabíola de Lima
Sartoratto, Adilson
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Antunes, Adriane Elisabete Costa
Prata, Ana Silvia
description The objective of this work was to design a particle using thyme (Thymus vulgaris) essential oil through complex coacervation. In vitro activity against bacteria and molds of free oil as well as the encapsulated oil was verified and then in situ assay was done. The free thyme oil presented high in vitro activity, with values below 0.50mg/mL for almost all the microorganisms tested. Also, MIC values for the encapsulated oil was lower than for the free oil, probably due to the protective micro-environment promoted by the particle wall. The microparticles applied to cakes samples conferred protection against the volatilization of the encapsulated oil and promoted a minimum shelf life of 30days without the use of synthetic preservatives. [Display omitted] •Thyme oil was efficient against bacteria and molds.•Microparticles were ten times more effective than the free oil in the “in vitro” test.•Shelf life of the cakes with added microparticles was improved (>30days).
doi_str_mv 10.1016/j.foodres.2017.03.006
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subjects Complex coacervation
Food spoilage
Fungi
Natural food preservative
Thyme oil
title Encapsulated thyme (Thymus vulgaris) essential oil used as a natural preservative in bakery product
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