Conditions to Prolonged Release of Microencapsulated Carvacrol on Alginate Films as Affected by Emulsifier Type and PH

Matiacevich, Silvia; Riquelme, Natalia; Herrera, M. L.

doi:10.1155/2015/173193

Cited by 7 publications

(5 citation statements)

References 53 publications

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“…5b, d), demonstrating the release of the active agent in a sustained storage. Matiacevich et al (2015) previously reported the efficacy of essential oils incorporated to alginate films, who studied the antifungal activity of carvacrol against B. cinerea during storage. Results showed that B. cinerea growth was inhibited due to the prolonged release of carvacrol during storage.…”

Section: Antifungal Propertiesmentioning

confidence: 99%

Active films based on alginate containing lemongrass essential oil encapsulated: Effect of process and storage conditions

Riquelme

Herrera

Matiacevich

2017

Food and Bioproducts Processing

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Section: Antifungal Propertiesmentioning

confidence: 99%

Active films based on alginate containing lemongrass essential oil encapsulated: Effect of process and storage conditions

Riquelme

Herrera

Matiacevich

2017

Food and Bioproducts Processing

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“…This result was attributed to the CAP characteristic of low molecular mobility by interaction with the oil component (FT‐IR Data). Previously, authors reported the lowest T 2FID values (1.5 μs) for films based on alginate and essential oil containing Capsul® (Matiacevich et al, 2015). However, when the CIT: CAP was spray‐dried, the change was insignificant ( p > 0.05), showing the relevance of the drying methodology in molecular interactions and mobility of the matrix and the importance of the structure obtained in relaxation behavior.…”

Section: Resultsmentioning

confidence: 97%

Citral encapsulation for an antimicrobial natural powdered‐additive: Performance of wall material and drying process

Alarcón‐Moyano,

Herrera,

Matiacevich

2023

J Americ Oil Chem Soc

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Citral encapsulation was analyzed by spray and freeze‐drying to obtain an antimicrobial additive in powder. Different formulations containing alginate and modified starch (Capsul®) as encapsulating agents (1% and 3% w/w, respectively) and maltodextrin as a wall material at different concentrations (varied from 1:1–1:4 Citral:Maltodextrin) were prepared. The powders were evaluated for physical and antimicrobial properties against Escherichia coli to obtain a natural antimicrobial food additive. Citral:Capsul:Maltodextrin powders obtained by spray‐drying showed the best physical properties, considering encapsulation yield (EY) (75%–80%), encapsulation efficiency (EE) (~78%), and particle size (5–10 μm), and a higher microbial inhibition at a lower additive concentration (1.5%–2% w/w), independently of maltodextrin concentration used. Powders obtained by freeze‐drying emulsions showed an EY ~70%, EE ~70%, particle sizes between 80 and 1250 μm, and a higher percentage of rehydration for antimicrobial activity (2.5%–4% w/w). An increase in maltodextrin concentration led to a decrease in %EE, an increase in particle size, and the powder concentration required to inhibit microbial growth. Therefore, the formulation 1:1:1 Citral:Capsul:Maltodextrin showed by spray‐drying showed the best characteristics to obtain a natural antimicrobial additive.

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“…Slavutsky and Bertuzzi [52] reported that the terpenes present in the oil can interact with starch through weak bonds, such as hydrogen bond, guaranteeing adhesion between these materials. Carboxymethyl cellulose-agar biocomposite film with Satureja hortensise essental oil [36] and sodium alginate films with carvacrol microparticles [72] presented a greater contact angle, which is attributed to the hydrophobic nature of the added substances.…”

Section: Moisture Solubility and Contact Anglementioning

confidence: 99%

Antimicrobial Activity and GC-MS Profile of Copaiba Oil for Incorporation into Xanthosoma mafaffa Schott Starch-Based Films

et al. 2020

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The present study evaluated the effect of the incorporation of copaiba oil, in direct and in microencapsulated form, into films based on Xanthosoma mafaffa Schott starch. Initially, the characterization of copaiba oil by gas chromatograph coupled with mass spectrometry (GC-MS) and its antimicrobial activity against gram-positive and gram-negative bacteria was performed. The films were produced by the casting technique and characterized in relation to physical, chemical, structural, and antimicrobial activity. Sesquiterpenes, mainly β-caryophyllene, were the predominant compounds in copaiba oil, showing antimicrobial activity against B. subtilis and S. aureus. The films showed forming capacity, however, was observed a decrease in solubility and revealed an increase in hydrophobic characteristics. However, the oil reduced the tensile strength and elongation, while the microcapsules did not influence the mechanical properties in comparison to the control film. From microstructure analysis, changes in the films roughness and surface were observed after the addition of oil both directly and in microencapsulated form. Films incorporated with microparticles were able to inhibit the gram-positive bacteria tested, forming inhibition zones, indicating that the encapsulation of copaiba oil was more efficient for protecting bioactive compounds from the oil, suggesting the possible application of mangarito starch-based films incorporated with copaiba oil as biodegradable packaging.

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Conditions to Prolonged Release of Microencapsulated Carvacrol on Alginate Films as Affected by Emulsifier Type and PH

Cited by 7 publications

References 53 publications

Active films based on alginate containing lemongrass essential oil encapsulated: Effect of process and storage conditions

Active films based on alginate containing lemongrass essential oil encapsulated: Effect of process and storage conditions

Citral encapsulation for an antimicrobial natural powdered‐additive: Performance of wall material and drying process

Antimicrobial Activity and GC-MS Profile of Copaiba Oil for Incorporation into Xanthosoma mafaffa Schott Starch-Based Films

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