Carlina acaulis essential oil: a candidate product for agrochemical industry due to its pesticidal capacity

Kavallieratos, Nickolas G.; Nika, Erifili P.; Skourti, Anna; Ferrati, Marta; Petrelli, Riccardo; Maggi, Filippo; Benelli, Giovanni

doi:10.1016/j.indcrop.2022.115572

Cited by 19 publications

(28 citation statements)

References 102 publications

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Section: Introductionmentioning

confidence: 99%

“…Essential oils (EOs) are complex mixtures of volatile, lipophilic substances, often characterized by a strong odor, and showing interesting bioactivities against viruses, bacteria, fungi, and arthropod pests and vectors, among others [ 1 , 2 , 3 , 4 ]. Therefore, their application on stored-product pest management constitutes a potential alternative to the overuse of synthetic insecticides [ 3 , 4 , 5 ]. To enhance the properties of plant EOs, they can be encapsulated into nanoemulsions (NEs), i.e., dispersions of oil nanodroplets in water that are kinetically stable thanks to the presence of surfactants (surfactant-to-oil ratio generally between 1 and 2) [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

“…It is a small destructive beetle species (2.5–4 mm), causing great economic damages worldwide, especially in warm climate regions [ 8 , 10 , 11 ]. Despite S. oryzae being a key insect in storages, the currently used synthetic insecticides face resistance and tolerance issues concerning its effective management [ 4 , 12 , 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

“…Of note, only a few studies focus on the utilization of EOs as grain protectants against S. oryzae adults. For instance, 100% mortality of S. oryzae adults was recorded after exposing them for 6 days to Carlina acaulis L. EO-treated stored wheat [ 4 ]. When EOs from Pinus roxburghii Sarg., Psidium guajava L., and Haplophyllum tuberculatum (Forsk.)…”

Section: Introductionmentioning

confidence: 99%

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The Type of Grain Counts: Effectiveness of Three Essential Oil-Based Nanoemulsions against Sitophilus oryzae

Kavallieratos

Bonacucina

Nika

et al. 2023

Plants

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Essential oil (EO)-based nanoemulsions (NEs) are promising grain protectants in the management of stored-product pests. However, the potential impact of the stored-grain species on the green insecticide effectiveness has been poorly studied. In this study, two concentrations of EO-based NEs from Carlina acaulis L., Mentha longifolia (L.) Huds., and Hazomalania voyronii (Jum.) Capuron were evaluated as insecticides against the major stored-product pest Sitophilus oryzae (L.) on barley, oats, and maize kernels. The C. acaulis EO-based NE applied at 1000 ppm on barley achieved the highest mortality, killing 94.4% of S. oryzae adults after a 7-day exposure, followed by 1000 ppm of H. voyronii EO-based NE (83.3%). The lowest mortality (1.1%) was recorded with 500 ppm of M. longifolia EO-based NE on maize after the same interval. All tested NEs exhibited elevated efficacy when applied on barley, while mortalities were lower on oats and maize. Furthermore, C. acaulis EO-based NE was the most effective when applied on all commodities, followed by H. voyronii and M. longifolia EO-based NEs. Overall, our results highlighted the significant impact of the stored cereal on the insecticidal effectiveness of EO-based NE used for stored-product pest control. Sitophilus oryzae adults on barley can be adequately controlled through the application of C. acaulis and H. voyronii EO-based NEs.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Type of Grain Counts: Effectiveness of Three Essential Oil-Based Nanoemulsions against Sitophilus oryzae

Kavallieratos

Bonacucina

Nika

et al. 2023

Plants

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“…In this work, a MAH optimization study for the obtaining of the Carlina acaulis L. (Asteraceae) root EO was performed. This EO has been reported as a promising candidate ingredient for biopesticide formulations given its high efficacy against several arthropod pests and vectors with an impact on agriculture and human health [ 10 , 11 , 12 , 13 , 14 ]. In addition, this product is scarcely toxic to non-target organisms [ 15 ], which is a hallmark strictly required by the European Union for registration as botanical insecticide or acaricide.…”

Section: Introductionmentioning

confidence: 99%

Microwave-Assisted Hydrodistillation of the Insecticidal Essential Oil from Carlina acaulis: A Fractional Factorial Design Optimization Study

Ferrati

Giudice

Felicioni

et al. 2023

Plants

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Recently, microwave-assisted hydrodistillation (MAH) has been reported as an innovative technique leading to increased essential oil (EO) extraction yield, coupled with reduced extraction time and energy costs. The EO of Carlina acaulis L. (Asteraceae), mainly constituted by carlina oxide (>95%) and conventionally obtained through traditional hydrodistillation (HD), has been reported as extremely effective against several arthropod vectors and pests of medical and economic importance with limited impact on non-target species, including mammals. This study aimed to the optimization of the EO extraction through MAH by using a one-step design of experiments (DoE) approach that allowed us to relate the characteristics of the produced EOs with the applied experimental conditions using mathematical models. The preliminary screening allowed us to optimize the protocol only by the extraction time, skipping complex data analysis. Moreover, the comparison of the optimized MAH conditions with traditional HD pointed out the higher efficiency of MAH in terms of EO yield (0.65 and 0.49% for MAH and HD, respectively) and extraction time (210 min for MAH). The results obtained confirmed the promising role that MAH could have in C. acaulis EO extraction, with increased yield and reduced extraction time, water consumption, and energy costs, and being employable on an industrial scale, with special reference to insecticidal and acaricidal formulations.

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Lethal and sublethal effects of carlina oxide on the aphid Metopolophium dirhodum and its non-target impact on two biological control agents

Novák,

Pavela,

Spinozzi

et al. 2024

J Pest Sci

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This study was designed to investigate the acute toxicity (mortality) and sublethal effects (fertility and potential natality) of carlina oxide, the main constituent of Carlina acaulis essential oil (EO), against adults of Metopolophium dirhodum (Walker) (Hemiptera: Aphididae). Moreover, its toxicity was evaluated against two aphid natural enemies, i.e., Aphidoletes aphidimyza Rondani (Diptera: Cecidomyiidae) and Chrysoperla carnea Stephens (Neuroptera: Chrysopidae). The highest tested concentration (3.0 mL L−1) resulted in 96.7% mortality of adults of the target pest, highlighting that this concentration of carlina oxide had a similar effectiveness as the positive control we used. Furthermore, probit analysis allowed the estimation of a LC50 of 1.06 mL L−1 and a LC90 of 2.58 mL L−1 for the target pest, which resulted in a much higher mortality rate than that found on natural enemies, i.e., A. aphidimyza (6.7 ± 4.7% ± SD when exposed to the aphid LC90) and C. carnea (7.0 ± 5.5% ± SD when exposed to the aphid LC90), showing the limited non-target impact of carlina oxide. The use of LC30 and LC50 of this compound allowed the fertility inhibition of the target pest by 35.68 ± 6.21% and 23.66 ± 10.58%, respectively, and potential natality inhibition of the target pest by 52.78 ± 4.48% and 59.69 ± 5.60%, respectively. Of note, carlina oxide showed excellent insecticidal activity against M. dirhodum, comparable to the commercial insecticide considered. Overall, the low toxicity of carlina oxide toward A. aphidimyza and C. carnea makes it a safe compound for non-target organisms as well as suitable for developing a green insecticide for the management of M. dirhodum and perhaps other insects of agricultural or medical and veterinary interest.

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Carlina acaulis essential oil: a candidate product for agrochemical industry due to its pesticidal capacity

Cited by 19 publications

References 102 publications

The Type of Grain Counts: Effectiveness of Three Essential Oil-Based Nanoemulsions against Sitophilus oryzae

The Type of Grain Counts: Effectiveness of Three Essential Oil-Based Nanoemulsions against Sitophilus oryzae

Microwave-Assisted Hydrodistillation of the Insecticidal Essential Oil from Carlina acaulis: A Fractional Factorial Design Optimization Study

Lethal and sublethal effects of carlina oxide on the aphid Metopolophium dirhodum and its non-target impact on two biological control agents

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