Development of low-density polyethylene films with lemon aroma

Dias, Marali Vilela; Medeiros, Hiasmyne Silva de; Soares, Nilda de Fátima Ferreira; Melo, Nathália Ramos de; Borges, Soraia Vilela; Carneiro, João de Deus Souza; Pereira, Joesse Maria Teixeira de Assis Kluge

doi:10.1016/j.lwt.2012.06.005

Cited by 41 publications

(33 citation statements)

References 20 publications

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“…have also demonstrated that the water vapor transfer process depends on the hydrophilic–hydrophobic ratio of the film constituents and hence the incorporation of hydrophobic oils in films decreases the WVTR and increases the barrier properties. According to Dias et al ., the presence of oil phase could increases the tortuosity factor in polymer matrix.…”

Section: Resultsmentioning

confidence: 99%

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Development of antifungal films based on low‐density polyethylene and thyme oil for avocado packaging

Pillai

Maubane

Ray

et al. 2015

J of Applied Polymer Sci

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Trilayer low-density polyethylene (LDPE) films were prepared by incorporating varying concentrations of thyme oil, as the antifungal active additive for avocado packaging. A comprehensive thermal, structural, mechanical, and functional characterization of the prepared films was carried out. Thermal stability of the film reduced with the addition of thyme oil in higher concentration, whereas the degree of crystallinity increased upto 2.5 wt % thyme oil loading. The elastic modulus and elongation at break of the films decreased in presence of thyme oil. However, the incorporation of thyme oil did not change the water vapor transmission characteristics of the original film. The antifungal activity of the films was tested against Colletotrichum gloeosporioides causal organism of "anthracnose" postharvest disease in avocados. The results indicated that the films have great potential as antifungal packaging materials for avocado fruits.

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Section: Resultsmentioning

confidence: 99%

“…This also allows the combined application of natural antimicrobial agents and modified atmospheric packaging technologies to preserve quality and shelf life of fresh produce. Dias et al . developed low‐density PE (LDPE) based flavoring films with essential oils and lemon aroma for cereal products packaging.…”

Section: Introductionmentioning

confidence: 99%

Development of antifungal films based on low‐density polyethylene and thyme oil for avocado packaging

Pillai

Maubane

Ray

et al. 2015

J of Applied Polymer Sci

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“…Dias et al [48] also used EOs for developing a low-density polyethylene flavouring films imbued with and/or lemon aroma. They showed that the films had a lower elongation due to the incorporation of active agents, combined whit a reduction of tensile strength over time.…”

Section: Foodmentioning

confidence: 99%

Current and Potential Use of Citrus Essential Oils

Palazzolo¹,

Laudicina²,

Germanà

2013

COC

157

102

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Abstract:Since the Middle Ages, citrus essential oils (EOs) have been widely used for their bactericidal, virucidal, fungicidal, antiparasitical, insecticidal, medicinal and cosmetic proprieties. Also nowadays, they find important applications in pharmaceutical, sanitary, cosmetic, agricultural and food industries. The best method to extract EOs from citrus plant tissue is steam distillation because of a variety of extracted volatile molecules such as terpenes and terpenoids, phenol-derived aromatic components and aliphatic components. In vitro physicochemical assays classify most of them as antioxidants.

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“…This behavior was much pronounced for the films containing higher concentrations of the active mixture. Changes in the transparency of the films were also reported by Dias et al (2013) who found that extruded LDPE films with lemon aroma or lemon EO in the range of 5-10% showed a more opaque, yellow coloration and therefore less transparent with respect to films without active agents.…”

Section: Sealability Of Active Filmssupporting

confidence: 67%

Antimicrobial packaging system for minimally processed fruit

Lledó¹,

Inés²

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Certifican que:La memoria titulada "Antimicrobial packaging system for minimally processed fruit" que presenta Dña. Marta Inés Lara Lledó para optar al grado de Doctor por la Universidad Politécnica de Valencia, ha sido realizada en el Instituto Tecnológico del Embalaje, Transporte y Logística (ITENE) bajo su dirección y que reúne las condiciones para ser defendida por su autora. antimicrobiano, a escala laboratorio y a escala semi-industrial, con el objetivo de reducir la proliferación de la flora natural de la fruta pelada y cortada y extender su vida útil. Se han desarrollado distintos prototipos para su posterior aplicación industrial.Previo al desarrollo de los materiales de envase, se llevó a cabo una selección de agentes activos más idóneos. Para ello se estudiaron mediante ensayos in vitro las propiedades antimicrobianas de agentes activos volátiles, citral, hexanal y linalool y diferentes mezclas de los mismos, frente a distintos microorganismos típicos del deterioro de las frutas, mohos y levaduras, concluyendo que la efectividad de la mezcla de los tres es superior a la suma de la efectividad de los agentes activos de forma individual. Así mismo, también se seleccionaron agentes antimicrobianos no volátiles como el sorbato potásico y benzoato sódico, los cuáles son ampliamente empleados en la industria alimentaria debido principalmente a sus propiedades antifúngicas.Con los agentes activos seleccionados, se desarrollaron películas monocapa de polipropileno (PP) con distintas concentraciones de la mezcla activa, citral, hexanal y linalool, a escala laboratorio, mediante técnicas de extrusión, y películas bicapa a escala semi-industrial mediante coextrusión. Por otra parte, se desarrollaron bandejas activas a escala semiindustrial mediante termoconformado de láminas obtenidas por coextrusión de compuestos de PP y etilvinilaceteto (EVA) con sorbato potásico o benzoato sódico como agentes antimicrobianos.Se evaluaron las propiedades mecánicas, barreras y térmicas de los materiales activos desarrollados, así como su sellabilidad y transparencia. En general, las propiedades de los polímeros no se vieron afectadas de manera relevante. Sin embargo, las bandejas activas perdieron su carácter transparente debido a la incorporación de los agentes activos no volátiles.Se estudió la cinética de liberación de los compuestos activos volátiles y no volátiles a distintas temperaturas, determinando los coeficientes de difusión de los agentes activos RESUMEN mediante el ajuste a modelos matemáticos de difusión basados en la Segunda Ley de Fick.Entre los agentes volátiles, el hexanal mostró un mayor coeficiente de difusión seguido de citral y linalool. Por otra parte, no hubo apenas diferencia en los coeficientes de difusión del sorbato potásico y benzoato sódico, siendo éstos del mismo orden de magnitud.Igualmente, se realizaron diferentes experimentos in vitro a distintas temperaturas para determinar las propiedades antimicrobianas de los materiales desarrollados. En general, los materiales activos presentaron una elev...

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Development of low-density polyethylene films with lemon aroma

Cited by 41 publications

References 20 publications

Development of antifungal films based on low‐density polyethylene and thyme oil for avocado packaging

Development of antifungal films based on low‐density polyethylene and thyme oil for avocado packaging

Current and Potential Use of Citrus Essential Oils

Antimicrobial packaging system for minimally processed fruit

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