Characterization of olive leaf extract polyphenols loaded by supercritical solvent impregnation into PET/PP food packaging films

Cejudo-Bastante, Cristina; Casas, Lourdes; Férnandez-Ponce, M.T.; Mantell, Casimiro; Ossa, E.J. Martı́nez de la

doi:10.1016/j.supflu.2018.06.008

Cited by 51 publications

(38 citation statements)

References 58 publications

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“…When the pressure raises, the density of the supercritical fluid increases, which may favour both the swelling of the matrix and the solubility of the compounds. This behaviour agrees with the literature on the impregnation of polyester and cotton natural fibers with natural extracts, as well as on the impregnation of PET/PP films with natural extracts [ 42 , 45 , 64 ]. Based on these results, a pressure of 50 MPa was selected for the experiments to be carried out later on.…”

Section: Resultssupporting

confidence: 91%

“…The phenolic characterization of both the RGPE and the impregnated fibers have been carried out by ultra-performance liquid chromatography (UHPLC) coupled to quadrupole-time-of-flight mass spectrometry (QToF-MS) (Xevo G2 QToF, Waters Corp.). The chromatographic method followed have been previously described by Cejudo et al (2018) [ 45 ], with some modifications. To recover phenolic compounds, certain amount of IJF was introduced into 10 mL of ethanol and sonicated during 30 min.…”

Section: Methodsmentioning

confidence: 99%

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Application of a Natural Antioxidant from Grape Pomace Extract in the Development of Bioactive Jute Fibers for Food Packaging

et al. 2021

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There is an increasing demand for the use of new food packaging materials. In this study, natural jute fibers impregnated with a Petit Verdot Red Grape Pomace Extract (RGPE) was proposed as a new active food packaging material. Pressurized Liquid Extraction (PLE) and Enhanced Solvent Extraction (ESE) techniques were employed to obtain the bioactive RGPE. Afterward the supercritical solvent impregnation conditions to obtain RGPE-natural jute fibers were studied, by varying pressure, modifier percentage and dried RGPE mass. PLE technique offered the highest bioactive extract at 20 MPa, 55 °C, 1 h residence time using C2H5OH:H2O (1:1 v/v), providing an EC50 of 3.35 ± 0.25 and antibacterial capacity against Escherichia coli, Staphylococcus aureus and Pseudomonas aeruginosa (MIC of 12.0, 1.5 and 4.0 mg/mL RGPE respectively). The natural jute fibers impregnated with 3 mL of that RGPE (90 mg/mL) at 50 MPa and 55 °C generated the most efficient packing material with regards to its food preservation potential.

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Section: Resultssupporting

confidence: 91%

Section: Methodsmentioning

confidence: 99%

Application of a Natural Antioxidant from Grape Pomace Extract in the Development of Bioactive Jute Fibers for Food Packaging

et al. 2021

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“…The different conditions favor a better dissolution of certain compounds at different operational conditions, leading to variations in the filament composition that eventually is reflected in the bioactivity. This selectivity on impregnation was proven previously by Cejudo et al both in the impregnation of olive leaf extract in PET/PP and mango leaf extract in nanofibrillated composites [ 51 , 52 ]. As it can be seen in Figure 9 , temperature is the variable with the most significant influence with regard to the AOC shown by the impregnated polymers.…”

Section: Resultssupporting

confidence: 71%

Supercritical Impregnation of PLA Filaments with Mango Leaf Extract to Manufacture Functionalized Biomedical Devices by 3D Printing

et al. 2021

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Polylactic Acid (PLA) filaments impregnated with ethanolic mango leaves extract (MLE) with pharmacological properties were obtained by supercritical impregnation. The effects of pressure, temperature and amount of extract on the response variables, i.e., swelling, extract loading and bioactivity of the PLA filaments, were determined. The analysis of the filaments biocapacities revealed that impregnated PLA filaments showed 11.07% antidenaturant capacity and 88.13% antioxidant activity, which after a 9-day incubation shifted to 30.10% and 9.90%, respectively. Subsequently, the same tests were conducted on printed samples. Before their incubation, the printed samples showed 79.09% antioxidant activity and no antidenaturant capacity was detected. However, after their incubation, the antioxidant activity went down to only 2.50%, while the antidenaturant capacity raised up to 23.50%. The persistence of the bioactive properties after printing opens the possibility of using the functionalized PLA filaments as the feed for a three-dimensional (3D) printer.

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“…The use of agri-food by-products as natural additives for the development of active packaging systems has several advantages; such as availability, recyclability, low-cost, environmentally friendly properties, no toxicity and biodegradability [7]. Several reviews [6,8,9] and research works can be found in the recent literature related to the use of natural antioxidants extracted from food waste or by-products such as orange [10,11], potato [12], olive leaf [13] and mango peels [14] for the development of antioxidant food packaging materials. Among the compounds naturally found in these by-products, antioxidants such as α-tocopherol [15], thymol, carvacrol [16], hydroxytyrosol [17], curcumin [18] and hydrolysed cottonseed proteins [19] have also been incorporated into packaging materials to reduce the problems associated with the lipid oxidation of fatty foods.…”

Section: Introductionmentioning

confidence: 99%

Novel Antioxidant Packaging Films Based on Poly(ε-Caprolactone) and Almond Skin Extract: Development and Effect on the Oxidative Stability of Fried Almonds

et al. 2020

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Antioxidant films based on poly(ε-caprolactone) (PCL) containing almond skin extract (ASE) were developed for food packaging applications. The effect of ASE incorporation on the morphological, structural, colour, mechanical, thermal, barrier and antioxidant properties of the prepared films were evaluated. The structural, tensile and thermal properties of the films were not altered due to ASE addition. Although no significant differences were observed for the oxygen permeability of samples, some increase in water absorption and water vapour permeability was observed for active films due to the hydrophilic character of ASE phenolic compounds, suggesting the suitability of this novel packaging for fatty foods conservation. ASE conferred antioxidant properties to PCL films as determined by the DPPH radical scavenging activity. The efficiency of the developed films was evaluated by the real packaging application of fried almonds at different ASE contents (0, 3, 6 wt.%) up to 56 days at 40 °C. The evolution of peroxide and p-anisidine values, hexanal content, fatty acid profile and characteristic spectroscopy bands showed that active films improved fried almonds stability. The results suggested the potential of PCL/ASE films as sustainable and antioxidant food packaging systems to offer protection against lipid oxidation in foods.

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Characterization of olive leaf extract polyphenols loaded by supercritical solvent impregnation into PET/PP food packaging films

Cited by 51 publications

References 58 publications

Application of a Natural Antioxidant from Grape Pomace Extract in the Development of Bioactive Jute Fibers for Food Packaging

Application of a Natural Antioxidant from Grape Pomace Extract in the Development of Bioactive Jute Fibers for Food Packaging

Supercritical Impregnation of PLA Filaments with Mango Leaf Extract to Manufacture Functionalized Biomedical Devices by 3D Printing

Novel Antioxidant Packaging Films Based on Poly(ε-Caprolactone) and Almond Skin Extract: Development and Effect on the Oxidative Stability of Fried Almonds

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