Diffusion of linalool and methylchavicol from polyethylene-based antimicrobial packaging films

Suppakul, Panuwat; Sonneveld, Kees; Bigger, Stephen W.; Miltz, Joseph

doi:10.1016/j.lwt.2011.03.024

Cited by 79 publications

(50 citation statements)

References 26 publications

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“…1,2 Most essential oils are known to have antimicrobial and antioxidant properties and are classified as generally recognized as safe (GRAS) by the U.S. Food and Drug Administration. [3][4][5] Thyme essential oil (TO), which is extracted from Thymus vulgaris L., is used in medical and pharmaceutical industries as well as in flavor and food industries. The major component of TO, thymol(2-isopropyl-5-methylphenol), which is a natural monoterpene phenol, has been extensively studied for food packaging applications due to its strong antimicrobial, antioxidant, and anti-insect properties.…”

Section: Introductionmentioning

confidence: 99%

Preparation of halloysite nanotubes coated with Eudragit for a controlled release of thyme essential oil

Lee

Park

2015

J of Applied Polymer Sci

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Active food packaging that releases active agents can extend the shelf-life and improve the quality and safety of food products. Essential oils have been used as natural food preservatives due to their antioxidant, antimicrobial, and anti-insect properties. However, one of the limitations of using essential oils as active agents is their high volatility. In this study, thyme essential oil, an active antioxidant agent, was encapsulated into halloysite nanotubes (HNTs) using a vacuum process to sustain the release rate and to solidify the thyme oil (TO) from a liquid state. Moreover, the TO-loaded HNT capsules (TO/HNT capsules) were coated with Eudragit EPO polymer to avoid burst release and to prolong the release time. The morphology of the prepared samples was characterized using SEM, TEM, and nitrogen adsorption-desorption analysis by BET method. Zeta potential and FTIR analysis were used to verify the encapsulation of the TO and the Eudragit EPO polymer coating of TO/HNT capsules. After Eudragit EPO polymer coating of TO/HNT capsules, the surface charge of the samples was converted from 217.5 6 0.2 mV to 119.4 6 1.5 mV. The amount of encapsulated TO was determined using a GC-FID. Encapsulation efficiency and payload of TO/HNT capsules prepared using 26.7% (w/v) TO solution were 14.94% and 14.58%, respectively. The encapsulated TO was released in a sustained manner for 96 h. In addition, antioxidant activity of the samples was evaluated using a DPPH assay and a reducing power assay. In both two assays, the antioxidant activity of the TO/HNT capsules was increased along with the increasing concentration of TO/HNT capsules.

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Section: Introductionmentioning

confidence: 99%

Preparation of halloysite nanotubes coated with Eudragit for a controlled release of thyme essential oil

Lee

Park

2015

J of Applied Polymer Sci

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“…4 The incorporation of antimicrobials throughout the bulk of packaging matrices has been used to control microbial contamination by allowing for diffusion of the antimicrobial through the packaging in a time-released manner. 5 Many approaches to antimicrobial active packaging follow this approach, yet it suffers certain drawbacks: (a) it is often difficult to release these antimicrobials in a controlled way to maintain the antimicrobial activity; (b) the presence of the agents in the polymer matrix may lead to changes in the functional properties of the films; and (c) biologic antimicrobials such as peptides and enzymes are difficult to incorporate into many packaging films due to incompatibility with the film manufacturing process (thermomechanical stress or solvent miscibility). There would therefore be both functional and regulatory advantages in an antimicrobial packaging material in which the active agent is covalently bound onto the material's surface such that it was unlikely to migrate into the food.…”

Section: ■ Introductionmentioning

confidence: 99%

Covalent Immobilization of Lysozyme on Ethylene Vinyl Alcohol Films for Nonmigrating Antimicrobial Packaging Applications

Muriel-Galet

Talbert

Hernández‐Muñoz

et al. 2013

J. Agric. Food Chem.

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The objective of this study was to develop a new antimicrobial film, in which lysozyme was covalently attached onto two different ethylene vinyl alcohol copolymers (EVOH 29 and EVOH 44). The EVOH surface was modified with UV irradiation treatment to generate carboxylic acid groups, and lysozyme was covalently attached to the functionalized polymer surface. Surface characterization of control and modified films was performed using attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) and dye assay. The value of protein loading after attachment on the surface was 8.49 μg protein/cm 2 and 5.74 μg protein/cm 2 for EVOH 29 and EVOH 44, respectively, after 10 min UV irradiation and bioconjugation. The efficacy of the EVOH−lysozyme films was assessed using Micrococcus lysodeikticus. The antimicrobial activity of the films was tested against Listeria monocytogenes and was similar to an equivalent amount of free enzyme. The reduction was 1.08 log for EVOH 29−lysozyme, 0.95 log for EVOH 44−lysozyme, and 1.34 log for free lysozyme. This work confirmed the successful use of lysozyme immobilization on the EVOH surface for antimicrobial packaging.

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“…These plant EOs are volatile liquids characterized by a strong odor [13]. Extracts derived from herbs and EOs contain many natural compounds such as thymol, linalool and carvacrol with a broad AM range against different pathogenic and spoilage microorganisms including Gram-negative [14,15] and Grampositive species [16,17]; as well as against yeast [18] and molds [19]. In general, these additives are considered to be safe and they have been classified as GRAS (Generally Recognized As Safe) by the American Food and Drug Administration [20].…”

Section: Introductionmentioning

confidence: 99%

Carvacrol and Thymol for Fresh Food Packaging

Ramos¹,

Beltrán²

2013

J Bioequiv Availab

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Active packaging is becoming an emerging food technology to improve quality and safety of food products. One of the most common approaches is based on the release of antioxidant/antimicrobial compounds from the packaging material. In this work an antifungal active packaging system based on the release of carvacrol and thymol was optimized to increase the post-harvest shelf life of fresh strawberries and bread during storage. Thermal properties of the developed packaging material were determined by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Volatile compounds in food samples contained in active packaging systems were monitored by using headspace solid phase microextraction followed by gas chromatography analysis (HS-SPME-GC-MS) at controlled conditions. The obtained results provided evidences that exposure to carvacrol and thymol is an effective way to enlarge the quality of strawberries and bread samples during distribution and sale.

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Diffusion of linalool and methylchavicol from polyethylene-based antimicrobial packaging films

Abstract: The diffusion of linalool and methylchavicol from thin (45-50 m) antimicrobial low-16 density polyethylene-based films was evaluated after immersion in isooctane and the 17 effect of temperature (4, 10, or 25 C) on the diffusion rate was evaluated.

Cited by 79 publications

References 26 publications

Preparation of halloysite nanotubes coated with Eudragit for a controlled release of thyme essential oil

Preparation of halloysite nanotubes coated with Eudragit for a controlled release of thyme essential oil

Covalent Immobilization of Lysozyme on Ethylene Vinyl Alcohol Films for Nonmigrating Antimicrobial Packaging Applications

Carvacrol and Thymol for Fresh Food Packaging

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