Encapsulation of Essential Oils for the Development of Biosourced Pesticides with Controlled Release: A Review

Maes, Chloë; Bouquillon, Sandrine; Fauconnier, Marie‐Laure

doi:10.3390/molecules24142539

Cited by 164 publications

(116 citation statements)

References 88 publications

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“…The chemical components of essential oils are volatile and susceptible to easy degradation due to temperature, light, oxygen, and moisture. Hence, encapsulating systems, such as microand nano-particles, capsules, droplets, cyclodextrin complexes, and fibres, are required to deliver still-functional EOs to a specific target and in a controlled fashion [24][25][26]. This review analyses the current state of the art on the release of EOs from polymeric fibres produced by electrospinning.…”

Section: Introductionmentioning

confidence: 99%

Electrospinning of Essential Oils

Mele

2020

Polymers

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The extensive and sometimes unregulated use of synthetic chemicals, such as drugs, preservatives, and pesticides, is posing big threats to global health, the environment, and food security. This has stimulated the research of new strategies to deal with bacterial infections in animals and humans and to eradicate pests. Plant extracts, particularly essential oils, have recently emerged as valid alternatives to synthetic drugs, due to their properties which include antibacterial, antifungal, anti-inflammatory, antioxidant, and insecticidal activity. This review discusses the current research on the use of electrospinning to encapsulate essential oils into polymeric nanofibres and achieve controlled release of these bioactive compounds, while protecting them from degradation. The works here analysed demonstrate that the electrospinning process is an effective strategy to preserve the properties of essential oils and create bioactive membranes for biomedical, pharmaceutical, and food packaging applications.

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Section: Introductionmentioning

confidence: 99%

Electrospinning of Essential Oils

Mele

2020

Polymers

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“…The EO of one species can vary, depending on chemotype. A chemotype is a "chemical race", meaning that plants sharing the same botanical name (same genus and species) can exhibit a completely different chemical composition [32].…”

Section: Introductionmentioning

confidence: 99%

Thymol Chemotype Origanum vulgare L. Essential Oil as a Potential Selective Bio-Based Herbicide on Monocot Plant Species

et al. 2020

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Searching for new bio-based herbicides is crucial for decreasing chemical pollution, protecting the environment, and sustaining biodiversity. Origanum vulgare is considered a promising source of essential oil with herbicidal effect. The mode of action is not known. The present study focused on (1) comparison of phytotoxic activity of Origanum vulgare EO on monocot (Triticum aestivum and Hordeum vulgare) and dicot species (Lepidium sativum and Sinapis alba); (2) and evaluating other antimicrobial biological activities against phytopatogen bacteria (Clavibacter michiganensis, Pseudomonas syringae pv. phaseolicola, Pseudomonas savastanoi, and Xanthomonas campestris); antifungal activity against Monilinia fructicola, Aspergillus niger, Penicillium expansum, and Botrytis cinerea; cytotoxic activity and antioxidant activity. According to the GC/MS analyses, the EO belongs to the thymol chemotype O. vulgare with its high content of thymol (76%). Germination of all four species was not influenced by EO. The phytotoxic effect was statistically significant in the monocot species, while in the dicot species the opposite was observed—a stimulation effect, which was also statistically significant. Strong biological activity of O. vulgare EO was noted on all phytopatogen bacteria and fungi in the highest dose. Cytotoxic activity showed an IC50 = 50.5 μg/mL. Antioxidant activity showed an IC50 = 106.6 μg/mL after 45 min experimental time. Based on the presented results, it is possible to conclude that thymol chemotype O. vulgare essential oil could be potentially used as a herbicide with selective effects on monocot plant species.

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“…Because of that, different methods, vide carriers, of EOs applications are sought to ensure their effectiveness for pre-emergence weed control. One of the promising venues is the application of EOs as solid preparations i.e., microcapsules or nanocapsules [13]. The solid carriers for essential oils tend to be a promising tool, as they enable a precise application and reduce losses of EOs [13].…”

Section: Introductionmentioning

confidence: 99%

“…One of the promising venues is the application of EOs as solid preparations i.e., microcapsules or nanocapsules [13]. The solid carriers for essential oils tend to be a promising tool, as they enable a precise application and reduce losses of EOs [13]. Moreover, they can also extend the biologic action of EOs by a slow release to the soil or growth medium [3].…”

Section: Introductionmentioning

confidence: 99%

Soil or Vermiculite-Applied Microencapsulated Peppermint Oil Effects on White Mustard Initial Growth and Performance

Synowiec

Krajewska

2020

Plants

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Microencapsulated peppermint (Mentha x piperita L.) essential oil (MPEO) is a prospective botanical herbicide. A hypothesis was formulated, that the type of growth medium (vermiculite or silty clay loam soil substrate) affects the phytotoxic potential of MPEO. A pot experiment in a randomized design assessed the effect of five doses of MPEO in a range of 0–108 g m−2 or 0–145 g m−2, mixed with vermiculite or with soil, respectively, on early growth of white mustard (Sinapis alba L. cv. Zlata), tested here as a model “weed” species. The morphologic analyses were supported by selected biochemical measurements. The two highest doses of microcapsules (from 73 to 145 g m−2) caused a significant decrease of plants’ height and biomass. An increase of anthocyanin content in the aboveground parts of mustard is supportive for the induction of defense mechanisms against MPEO-triggered stress in mustard leaves. In conclusion, MPEO appears as a promising bio-herbicide. However, we are aware that further studies on the mechanisms of action of MPEO in different weed species are necessary to test (i) whether or not the effect is consistent to be proficiently exploited for weed control in field and (ii) to deepen the biochemical and physiological reactions by the plants against MPEO treatments.

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Encapsulation of Essential Oils for the Development of Biosourced Pesticides with Controlled Release: A Review

Cited by 164 publications

References 88 publications

Electrospinning of Essential Oils

Electrospinning of Essential Oils

Thymol Chemotype Origanum vulgare L. Essential Oil as a Potential Selective Bio-Based Herbicide on Monocot Plant Species

Soil or Vermiculite-Applied Microencapsulated Peppermint Oil Effects on White Mustard Initial Growth and Performance

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