Effect of essential oils and homogenization conditions on properties of chitosan-based films

Bonilla, Jeannine; Atarés, Lorena; Vargas, María; Chiralt, Amparo

doi:10.1016/j.foodhyd.2011.03.015

Cited by 286 publications

(149 citation statements)

References 19 publications

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“…and are closer to those of the control film (oil-free chitosan film). A decrease in these two properties with the increase of oil was also observed in emulsified films with chitosan/basil essential oil [19] , chitosan/thyme essential oil [20] , chitosan/tea tree oil [22] , cassava starch-chitosan/oregano essential oil [33] , and whey protein/olive oil [34] .…”

Section: Mechanical Propertiesmentioning

confidence: 64%

“…The stability of chitosan films can be achieved by adding surfactants but also by emulsification with rotor-stator homogenizer (> 20,000 rpm) [19][20][21] , or even less vigorously (13,500 rpm) [22] . The small concentration of chitosan in oil emulsions also helps to maintain the stability of the emulsion.…”

Section: Introductionmentioning

confidence: 99%

“…The small concentration of chitosan in oil emulsions also helps to maintain the stability of the emulsion. Usually, this concentration ranges from 0.1 to 1% [19][20][21] , but it can reach values up to 3% [22] . Therefore, in this work, we decided to work with concentrations between 0.1 and 1% and agitation (24,000 rpm).…”

Section: Introductionmentioning

confidence: 99%

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The effect of andiroba oil and chitosan concentration on the physical properties of chitosan emulsion film

et al. 2016

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SbstractChitosan film is used as a dressing to heal burns. The physical and biological properties of the film can be modified by the addition of phytotherapic compounds. This work used the casting -solvent evaporation technique to prepare chitosan film containing andiroba oil (Carapa guianensis) which has anti-inflammatory, antibiotic, and healing properties. The objective of this study was to determine the effect of the concentrations of chitosan and andiroba oil on the physical properties of chitosan films. The emulsion films were evaluated concerning the mechanical properties and fluid handling capacity. Additionally, scanning electron microscopy and thermal analysis were performed. The results showed that the barrier and mechanical properties were affected by the addition of andiroba oil, and these may be modulated as a function of the concentration of oil added to the film. The thermal analysis showed no evidence of chemical interactions between the oil and chitosan.

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Section: Mechanical Propertiesmentioning

confidence: 64%

Section: Introductionmentioning

confidence: 99%

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The effect of andiroba oil and chitosan concentration on the physical properties of chitosan emulsion film

et al. 2016

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“…This study is in accordance with the latter publications as statistical analysis has shown that the antimicrobial efficacy of the essential oils studied depends on the applied concentration rather the particle sizes generated in the oil-water nanoemulsion during the sonication process. Additionally, a negative Z-potential of all nanoemulsions generated which is related to the differences in the number of ionizable components and the degree of dissociation of the studied essential oils (Bonilla, Atar es, Vargas, & Chiralt, 2012) was observed.…”

Section: Tablementioning

confidence: 92%

Determination of the efficacy of ultrasound combined with essential oils on the decontamination of Salmonella inoculated lettuce leaves

Millan-Sango

Garroni

Farrugia

et al. 2016

LWT

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a b s t r a c tSalmonella is one of main pathogenic bacteria present in fresh produce. Ultrasound has been reported to be effective at inactivating food-borne pathogens. Moreover, ultrasound can be combined with essential oils to enhance its efficacy. This study evaluates the reduction and inactivation of Salmonella enterica Abony inoculated on lettuce leaves by the application of continuous and pulsed ultrasound as well as ultrasound combined with the essential oil of oregano and thyme. The physicochemical properties of these essential oil nanoemulsions are characterised while the structural damage of treated leaves is determined by the electrolyte leakage. Ultrasound combined with essential oils enhanced the microbial reduction on lettuce leaves and inactivation on the treated water, resulting on significant differences at concentrations higher than 0.018% (v/v) compared to control. Particle size, zeta potential and pH varied between 35 and 133 nm, À26 to À36 mV and 5.67 to 5.38, respectively. Electrolyte leakage was similar for both the control and the treated samples, increasing when essential oils were applied.

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“…The addition of carnauba wax affected the films thicknesses, where a significant increase was observed when wax was incorporated into the formulation (Table 2), ranging from 0.0364-0.0858 mm.When the wax content increases the higher molecular contact between the chitosan and wax compounds may weaken the aggregation forces of the polymer chain, making the matrix more open 1,3,31 . Other authors reported the same behavior with the addition of lipids to filmogenic solutions.…”

Section: Wvp and Thicknessmentioning

confidence: 99%

Effect of the Addition of Carnauba Wax on Physicochemical Properties of Chitosan Films

et al. 2017

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Films and edible coatings of natural polymers have been proposed as an attractive alternative for conventional plastic packaging because of their excellent biodegradability and biocompatibility. However, natural polymers, like chitosan, are hydrophilic and present poor water barrier properties. The addition of wax or other hydrophobic substances decreases water permeability of natural polymers but can increases their opacity.The objective of this work was to produce biofilms based on chitosan and different concentrations of carnauba wax and analyze their optical and barrier properties. The films were obtained by dissolving chitosan in acetic acid. Carnauba wax was incorporated into filmforming solutions at0, 15, 30, 40 and 50% (w/w). The opacity increased with higher concentrations of wax, the film with 50% of wax showed the highest value with an increase of 10.5% compared to the control film. The water vapor permeability decreased from 2.73 g.mm/kPa.m 2 .h (0% of wax) to 0.77 g.mm/h.kPa.m 2 (40% of wax). The solubility decreased to about 60% over the control films, and the contact angle increased from 53º to 83º, in film with 0 and 50% of wax, respectively.

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Effect of essential oils and homogenization conditions on properties of chitosan-based films

Cited by 286 publications

References 19 publications

The effect of andiroba oil and chitosan concentration on the physical properties of chitosan emulsion film

The effect of andiroba oil and chitosan concentration on the physical properties of chitosan emulsion film

Determination of the efficacy of ultrasound combined with essential oils on the decontamination of Salmonella inoculated lettuce leaves

Effect of the Addition of Carnauba Wax on Physicochemical Properties of Chitosan Films

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