Optimisation of a semiochemical slow‐release alginate formulation attractive towards <i>Aphidius ervi</i> Haliday parasitoids

Heuskin, Stéphanie; Lorge, Stéphanie; Godin, Bruno; Leroy, Pascal; Frère, Isabelle; Verheggen, François; Haubruge, Éric; Wathelet, Jean‐Paul; Mestdagh, Michèle; Hance, Thierry; Lognay, Georges

doi:10.1002/ps.2234

Cited by 52 publications

(63 citation statements)

References 52 publications

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“…In each experimental test, M ∞ was noticed at 8160 µg/200 mg alginate beads and 7600 µg/200 mg alginate beads for E-β-farnesene and E-β-caryophyllene, respectively. These values were found in a previous study (Heuskin et al, 2012). Figures 1a and 1b show the cumulative release rates over time for the eight experiments for E-β-farnesene and E-β-caryophyllene, respectively.…”

Section: Semiochemical Release Rate Measurementssupporting

confidence: 85%

“…Chemicals and reagents (E-β-farnesene, E-β-caryophyllene, (+)-Longifolene) used in this research were the same than presented in a previous paper (Heuskin et al, 2012).…”

Section: Chemicals and Reagentsmentioning

confidence: 99%

“…Alginate bead formulation was optimised in a previous study (Heuskin et al, 2012), in terms of semiochemical formulation efficiency. The experimental conditions are described hereafter.…”

Section: Alginate Bead Formulationmentioning

confidence: 99%

“…The chromatographic conditions are the same than the one previously detailed in previous papers (Heuskin et al, 2009(Heuskin et al, , 2010(Heuskin et al, , 2012.…”

Section: Fast Gc Analysesmentioning

confidence: 99%

“…The protection efficiency of alginate beads towards both molecules was demonstrated in Heuskin et al (2010). This formulation was optimised in terms of semiochemical encapsulation capacity and already proved its biological efficiency by attracting aphid parasitoids, Aphidius ervi (Heuskin et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

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A Semiochemical Slow-release Formulation in a Biological Control Approach to Attract Hoverflies

Heuskin

Lorge

Leroy

et al. 2012

JEE

Self Cite

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E-β-Farnesene, the alarm pheromone of many aphid species, and E-β-caryophyllene are considered as two sesquiterpenes attractive for aphid predators, among which Syrphidae species. Both compounds were formulated in alginate gel beads as slow-release devices in a biological control approach against aphids. Semiochemical diffusion from beads was studied in the laboratory according to abiotic parameters. Efficiency of formulations as hoverfly attractant was demonstrated in field experiments from June to August 2009. The diffusion of semiochemicals from alginate bead formulations was principally limited by high values (>85%) of relative humidity in the air. Temperature also impacts the release of volatile compounds. In field experiments, these two abiotic factors were supposed to highly condition the trapping of hoverflies. These field trappings demonstrated the efficiency of both semiochemical formulations compared to control (formulation without semiochemical) to catch females of Syrphidae during three months.This research proved the efficiency of semiochemical alginate formulations as potential biological control tool to attract aphid predators.

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Section: Semiochemical Release Rate Measurementssupporting

confidence: 85%

“…Chemicals and reagents (E-β-farnesene, E-β-caryophyllene, (+)-Longifolene) used in this research were the same than presented in a previous paper (Heuskin et al, 2012).…”

Section: Chemicals and Reagentsmentioning

confidence: 99%

“…Alginate bead formulation was optimised in a previous study (Heuskin et al, 2012), in terms of semiochemical formulation efficiency. The experimental conditions are described hereafter.…”

Section: Alginate Bead Formulationmentioning

confidence: 99%

“…The chromatographic conditions are the same than the one previously detailed in previous papers (Heuskin et al, 2009(Heuskin et al, , 2010(Heuskin et al, , 2012.…”

Section: Fast Gc Analysesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Semiochemical Slow-release Formulation in a Biological Control Approach to Attract Hoverflies

Heuskin

Lorge

Leroy

et al. 2012

JEE

Self Cite

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Development of a Self‐Adhesive Oleogel Formulation Designed for the Slow Release of Semiochemicals

Muskat

Brikmann

et al. 2022

Macro Materials & Eng

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Oleogels have been widely studied as delivery matrices for lipophilic compounds. Despite their potential, oleogels are underexplored for the formulation and release of semiochemicals for insect behavior manipulation strategies. An ethylcellulose-candelilla wax-oleogel as a suitable carrier for the slow release of volatile semiochemicals, employing the sesquiterpene 𝜷-caryophyllene as a model substance is presented. A current drawback of ethylcellulose oleogels is the high temperature needed during the oleogel preparation procedure, leading to excessive volatilization of the active compounds. Reducing the gelling temperature from 104.8 to 66.9 °C and, thus, the volatile addition temperature by addition of the softener octyldodecanol results in 95.28% entrapment efficiency. Experimental results demonstrate release modifiability by tailoring the matrix crystalline state due to candelilla wax addition. Furthermore, a method is established for analyzing the self-adhesive properties of the gel on plant leaves. In addition, the gel's self-adhesive properties employed on apple leaves are synergistically affected by oil leakage and gel stiffness. Olfactometer experiments showed that the formulation is able to enhance the attractiveness of aphid-infested plants for parasitic wasps. The present study provides a novel matrix-type semiochemical formulation based on non-toxic, biobased and biodegradable materials and will contribute to the establishment of oleogels as delivery systems for semiochemicals.

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Preparation and evaluation of alginate/chitosan microspheres containing pheromones for pest control of Megaplatypus mutatus Chapuis (Platypodinae: Platypodidae)

Valladares

Audino

Strumia

2015

Polymer International

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This work describes the optimization of an alginate/chitosan microsphere preparation for the encapsulation of a sexual pheromone, 6‐methyl‐5‐hepten‐2‐ol (sulcatol), to realize a slow‐release device for the biological control of the Megaplatypus mutatus pest. To evaluate and select the best encapsulation/release conditions three parameters were studied: alginate concentration, pH of gelling solution and Ca2+/COO− ratio. The preparation was optimized using biopolymers with improved mechanical properties and swelling behavior. The obtained microspheres were characterized using Fourier transform infrared spectroscopy, scanning electron and optical microscopies, swelling degree, mechanical properties and in vitro release of encapsulated pheromone. The microspheres performed best when they were synthesized using an alginate concentration of 4% w/v, at pH = 9 and with a Ca2+/COO− ratio of 3.5. The attractiveness of the alginate/chitosan microspheres towards M. mutatus was demonstrated by behavioral bioassay with the completed pheromonal blend of the species (sulcatol, sulcatone and 3‐pentanol). The formulation can be considered as an efficient slow‐release biological control system, with no negative environmental impact. © 2015 Society of Chemical Industry

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Optimisation of a semiochemical slow‐release alginate formulation attractive towards Aphidius ervi Haliday parasitoids

Abstract: Semiochemical alginate beads can be considered as efficient slow-release systems in biological control. These formulations could be very useful to attract aphid parasitoids on crop fields.

Cited by 52 publications

References 52 publications

A Semiochemical Slow-release Formulation in a Biological Control Approach to Attract Hoverflies

A Semiochemical Slow-release Formulation in a Biological Control Approach to Attract Hoverflies

Development of a Self‐Adhesive Oleogel Formulation Designed for the Slow Release of Semiochemicals

Preparation and evaluation of alginate/chitosan microspheres containing pheromones for pest control of Megaplatypus mutatus Chapuis (Platypodinae: Platypodidae)

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