Mathematical model to describe the release of an antimicrobial agent from an active package constituted by carvacrol in a hydrophilic EVOH coating on a PP film

Cerisuelo, Josep Pasqual; Muriel-Galet, Virginia; Bermúdez, J.M.; Aucejo, Susana; Catalá, Ramón; Gavara, Rafael; Hernández‐Muñoz, Pilar

doi:10.1016/j.jfoodeng.2011.12.013

Cited by 55 publications

(51 citation statements)

References 17 publications

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“…The D values at the same temperature increased by 1.3-to 1.7-fold with the a w increase. Faster diffusion at a higher RH might be due to more polymer relaxation induced by water molecules (Cerisuelo et al, 2012).…”

Section: Antimicrobial and Physical Properties Of The Model Film Incomentioning

confidence: 99%

Antimicrobial edible defatted soybean meal-based films incorporating the lactoperoxidase system

Lee

Min

2013

LWT - Food Science and Technology

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Section: Antimicrobial and Physical Properties Of The Model Film Incomentioning

confidence: 99%

Antimicrobial edible defatted soybean meal-based films incorporating the lactoperoxidase system

Lee

Min

2013

LWT - Food Science and Technology

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“…7 Nowadays, both regulation agencies and consumers demands are tending towards utilization of natural compounds over synthetic substances that their long term effects are unknown. 13,16,[18][19][20][21][22][23][24][25] However, this activity is evaluated, in most cases, immediately aer lms production, [25][26][27][28] while the challenges related to longstanding activity of the EO within the polymeric matrix are not addressed. 16,17 Once the EOs are compounded with polymers by conventional melt-processing technologies, antimicrobial activity may be achieved.…”

Section: Introductionmentioning

confidence: 99%

Novel LDPE/halloysite nanotube films with sustained carvacrol release for broad-spectrum antimicrobial activity

et al. 2015

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The emergence of antibiotic resistance of pathogenic bacteria has led to renewed interest in exploring the potential of plant-derived antimicrobials e.g., essential oils (EOs), as an alternative strategy to reduce microbial contamination. However, the volatile nature of EOs presents a major challenge in their incorporation into polymers by conventional high-temperature processing techniques. Herein, we employ halloysite nanotubes (HNTs) as efficient nano-carriers for carvacrol (a model EO). This precompounding encapsulation step imparts enhanced thermal stability to the carvacrol, allowing for its subsequent melt compounding with low-density polyethylene (LDPE). The resulting polymer nanocomposites exhibit outstanding antimicrobial properties with a broad spectrum of inhibitory activity against Escherichia coli, Listeria innocua in biofilms, and Alternaria alternata. Their antimicrobial effectiveness is also successfully demonstrated in complex model food systems (soft cheese and bread).This superior activity, compared to other studied carvacrol containing films, is induced by the significantly higher carvacrol content in the film as well as its slower out-diffusion from the hybrid system. Thus, these new active polymer nanocomposites presents an immense potential in controlling microbial contamination and biofilm related adverse effects, rendering them as excellent candidate materials for a wide range of applications.

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“…[47][48][49] The prevailing methodology in most studies is to incorporate organo-modified montmorillonite clays (MMT) as filler during melt compounding. [26,31,50] The rational for the incorporation of the clay was to improve the barrier properties of the films in order to protect the volatile and heat-sensitive essential oil molecules.…”

Section: Introductionmentioning

confidence: 99%

Antibacterial and antifungal LDPE films for active packaging

Shemesh

Krepker

Goldman

et al. 2014

Polymers for Advanced Techs

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Active antimicrobial packaging is a promising form of active packaging that can kill or inhibit microorganism growth in order to maintain product quality and safety. One of the most common approaches is based on the release of volatile antimicrobial agents from the packaging material such as essential oils. Due to their highly volatile nature, the challenge is to preserve the essential oils during the high-temperature melt processing of the polymer, while maintaining high antimicrobial activity for a desired shelf life. This study suggests a new approach in order to achieve this goal. Antimicrobial active films are developed based on low-density polyethylene (LDPE), organo-modified montmorillonite clays (MMT) and carvacrol (used as an essential oil model). In order to minimize carvacrol loss throughout the polymer compounding, a pre-compounding step is developed in which clay/carvacrol hybrids are produced. The hybrids exhibit a significant increase in the d-spacing of clay and enhanced thermal stability. The resulting LDPE/(clay/carvacrol) films exhibit superior and prolonged antibacterial activity against Escherichia coli and Listeria innocua, while polymer compounded with pure carvacrol loses the antibacterial properties within days. The films also present an excellent antifungal activity against Alternaria alternata, used as a model plant pathogenic fungus. Furthermore, infrared spectroscopy analysis of the LDPE/(clay/carvacrol) system displayed significantly higher carvacrol content in the film as well as a slower out-diffusion of the carvacrol molecules in comparison to LDPE/carvacrol films. Thus, these new films have a high potential for antimicrobial food packaging applications due to their longlasting and broad-spectrum antimicrobial efficacy.

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Mathematical model to describe the release of an antimicrobial agent from an active package constituted by carvacrol in a hydrophilic EVOH coating on a PP film

Cited by 55 publications

References 17 publications

Antimicrobial edible defatted soybean meal-based films incorporating the lactoperoxidase system

Antimicrobial edible defatted soybean meal-based films incorporating the lactoperoxidase system

Novel LDPE/halloysite nanotube films with sustained carvacrol release for broad-spectrum antimicrobial activity

Antibacterial and antifungal LDPE films for active packaging

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