Effect of supercritical CO2 fractionation of Tahiti lemon (Citrus latifolia Tanaka) essential oil on its antifungal activity against predominant molds from pan bread

Gasparetto, Bruna dos Reis; Moreira, Rafael Chelala; Melo, Rayanne Priscilla França de; Lopes, Aline de Souza; Rocha, Liliana de Oliveira; Pastore, Gláucia Maria; Bicas, Juliano Lemos; Martínez, Julian; Steel, Caroline Joy

doi:10.1016/j.foodres.2022.111900

Cited by 4 publications

(3 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An important long-term antifungal efficacy of (AP/1%CHG)- grafted -3%DTSACL was observed visually ( Figure S14 ). Since it is known that fungal contamination is the most common and easy method of spoilage of foods such as bread, 71 our group conducted a preliminary test to assess the antifungal efficacy by embedding one side of the surface of a silica wafer coated with (AP/1%CHG)- grafted -3%DTSACL into bread and being left in a plastic wrapped condition at room temperature for 21 days. The fungi grew rapidly and almost covered the whole bread; interestingly, no fungal growth occurred near the area where the silica wafer was embedded with the select compound blend.…”

Section: Results and Discussionmentioning

confidence: 99%

Elastic and Self-Healing Copolymer Coatings with Antimicrobial Function

Laysandra,

Rusli,

Chen

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

The revolutionary self-healing function for longterm and safe service processes has inspired researchers to implement them in various fields, including in the application of antimicrobial protective coatings. Despite the great advances that have been made in the field of fabricating self-healing and antimicrobial polymers, their poor transparency and the trade-off between the mechanical and self-healing properties limit the utility of the materials as transparent antimicrobial protective coatings for wearable optical and display devices. Considering the compatibility in the blending process, our group proposed a self-healing, selfcross-linkable poly{(n-butyl acrylate)-co-[N-(hydroxymethyl)acrylamide]} copolymer (AP)-based protective coating combined with two types of commercial cationic antimicrobial agents (i.e., dimethyl octadecyl (3-trimethoxysilylpropyl) ammonium chloride (DTSACL) and chlorhexidine gluconate (CHG)), leading to the fabrication of a multifunctional modified compound film of (AP/b %CHG)-grafted-a%DTSACL. The first highlight of this research is that the reactivity of the hydroxyl group in the N-(hydroxymethyl)acrylamide of the copolymer side chains under thermal conditions facilitates the "grafting to" process with the trimethoxysilane groups of DTSACL to form AP-graf ted-DTSACL, yielding favorable thermal stability, improvement in hydrophobicity, and enhancement of mechanical strength. Second, we highlight that the addition of CHG can generate covalent and noncovalent interactions in a complex manner between the two biguanide groups of CHG with the AP and DTSACL via a thermaltriggered cross-linking reaction. The noncovalent interactions synergistically serve as diverse dynamic hydrogen bonds, leading to complete healing upon scratches and even showing over 80% self-healing efficiency on full-cut, while covalent bonding can effectively improve elasticity and mechanical strength. The soft nature of CHG also takes part in improving the self-healing of the copolymer. Moreover, it was discovered that the addition of CHG can enhance antimicrobial effectiveness, as demonstrated by the long-term superior antibacterial activity (100%) against Gram-negative (Escherichia coli) and Gram-positive (Staphylococcus aureus) bacteria and the antifouling function on a glass substrate and/or a silica wafer coated by the modified polymer.

show abstract

Section: Results and Discussionmentioning

confidence: 99%

Elastic and Self-Healing Copolymer Coatings with Antimicrobial Function

Laysandra,

Rusli,

Chen

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…The cultivation of Tahiti lime represents a productive sector of great importance worldwide, with an approximate production of 15 million tons per year [13]. However, its use and industrial exploitation generate a large volume of waste (approximately 50% of the total weight).…”

Section: Introductionmentioning

confidence: 99%

“…However, its use and industrial exploitation generate a large volume of waste (approximately 50% of the total weight). Among the possible uses of the agro-industrial residues of Tahiti lime, the extraction of EO using different methodologies has been studied successfully [13,14]. Regarding the use of this EO as an active ingredient in the formulation of edible coatings, evaluations have been made due to its incorporation into chitosan-gelatin systems for the preservation of rainbow trout fillets [15] and in the preparation of gelatin-based coatings for shrimp life extension [16].…”

Section: Introductionmentioning

confidence: 99%

Effect of Essential Oils from Lemongrass and Tahiti Lime Residues on the Physicochemical Properties of Chitosan-Based Biodegradable Films

Daza

Montealegre

Aldana

et al. 2023

Foods

View full text Add to dashboard Cite

This work aimed to evaluate the impact of adding two essential oils (EO) from lemongrass (LEO) and Tahiti lime (TLEO) on the physical, mechanical, and thermal properties of chitosan-based biodegradable films. Six film formulations were prepared: two controls with chitosan concentrations of 1% and 1.5% v/w, two formulations combining the two chitosan concentrations with 1% LEO v/v, and two formulations combining the two chitosan concentrations with 1% TLEO v/v. The films’ morphological, water affinity, barrier, mechanical, and thermal properties were evaluated. The films’ surface showed a heterogeneous morphology without cracks, whereas the cross-section showed a porous-like structure. Adding EO to the films promoted a 35–50% decrease in crystallinity, which was associated with an increase in the elasticity (16–35%) and a decrease in the tensile strength (9.3–29.2 MPa) and Young’s modulus (190–1555 MPa) on the films. Regarding the optical properties, the opacity of the films with TLEO increased up to 500% and 439% for chitosan concentrations of 1% and 1.5%, respectively. While the increase in opacity for the films prepared with LEO was 357% and 187%, the reduction in crystallinity also reduced the resistance of the films to thermal processes, which could be explained by the reduction in the enthalpy of fusion. The thermal degradation of the films using TLEO was higher than those where LEO was used. These results were indicative of the great potential of using TLEO and LEO in biodegradable films. Likewise, this work showed an alternative for adding value to the cultivation of Tahiti lime due to the use of its residues, which is in accordance with the circular economy model. However, it was necessary to deepen the study and the use of these essential oils in the preparation of biodegradable films.

show abstract