Azadirachta indica A. Juss (Meliaceae) microencapsulated bioinsecticide: Spray drying technique optimization, characterization, in vitro release, and degradation kinetics

Bezerra, Debborah Gonçalves; Andrade, Iuli Ribeiro de; Santos, Hugo Leonardo Vilela; Xavier, Michael Douglas da Silva; Fernandes, Pedro Ícaro; Devilla, Ivano Alessandro; Nascimento, Thaís Leite; Borges, Leonardo Luiz; Conceição, Edemilson Cardoso da; Paula, Joelma Abadia Marciano de

doi:10.1016/j.powtec.2020.11.079

Cited by 8 publications

(5 citation statements)

References 90 publications

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“…On the other hand, in the T2 treatment (116 • C and 15% encapsulant), a maximum release content of 7.44 mg GAE/g was reached at 15 h, indicating a positive effect of the higher drying temperature on the release kinetics. This may be attributed to forming a more porous polymeric matrix due to the faster evaporation of water at higher temperatures [30,79]. In the treatments with a higher proportion of encapsulating agents, T3 (96 • C and 25%) and T4 (116 • C and 25%), a lower amount of released phenols was observed (6.20 and 6.33 mg GAE/g, respectively).…”

Section: Release Of Phenolic Compounds In the Nanocapsulesmentioning

confidence: 97%

Effect of Inlet Air Temperature and Quinoa Starch/Gum Arabic Ratio on Nanoencapsulation of Bioactive Compounds from Andean Potato Cultivars by Spray-Drying

Ligarda-Samanez,

Choque-Quispe,

Moscoso-Moscoso

et al. 2023

Molecules

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Nanoencapsulation of native potato bioactive compounds by spray-drying improves their stability and bioavailability. The joint effect of the inlet temperature and the ratio of the encapsulant (quinoa starch/gum arabic) on the properties of the nanocapsules is unknown. The purpose of this study was to determine the best conditions for the nanoencapsulation of these compounds. The effects of two inlet temperatures (96 and 116 °C) and two ratios of the encapsulant (15 and 25% w/v) were evaluated using a factorial design during the spray-drying of native potato phenolic extracts. During the study, measurements of phenolic compounds, flavonoids, anthocyanins, antioxidant capacity, and various physical and structural properties were carried out. Higher inlet temperatures increased bioactive compounds and antioxidant capacity. However, a higher concentration of the encapsulant caused the dilution of polyphenols and anthocyanins. Instrumental analyses confirmed the effective encapsulation of the nuclei in the wall materials. Both factors, inlet temperature, and the encapsulant ratio, reduced the nanocapsules’ humidity and water activity. Finally, the ideal conditions for the nanoencapsulation of native potato bioactive compounds were determined to be an inlet temperature of 116 °C and an encapsulant ratio of 15% w/v. The nanocapsules obtained show potential for application in the food industry.

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Section: Release Of Phenolic Compounds In the Nanocapsulesmentioning

confidence: 97%

Effect of Inlet Air Temperature and Quinoa Starch/Gum Arabic Ratio on Nanoencapsulation of Bioactive Compounds from Andean Potato Cultivars by Spray-Drying

Ligarda-Samanez,

Choque-Quispe,

Moscoso-Moscoso

et al. 2023

Molecules

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“…The microencapsulation of plant extracts with insecticidal activity has the advantage of reducing the impact on the environment and human health since the molecules used are biodegradable. Furthermore, the products can be directed to the target, the release of insecticidal compounds is controlled, and the bioactivity is maintained for a long period [ 18 ]. The neem extract microencapsulation has been effective for the biocontrol of insects.…”

Section: Discussionmentioning

confidence: 99%

“…The uses of encapsulation agents that wrap the components of the plant extracts are a current strategy for its preservation [ 16 ]. Many publications have demonstrated the efficiency of encapsulation processes in the preservation of neem compounds [ 17 , 18 ]. The encapsulation methods have involved the development of micrometric and nanometric particle sizes [ 14 , 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

The Insecticidal Activity of Azadirachta indica Leaf Extract: Optimization of the Microencapsulation Process by Complex Coacervation

Michel

Aguilar‐Zárate

Rojas

et al. 2023

Plants

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The objective of the present work was to optimize the microencapsulation conditions of neem (Azadirachta indica A. Juss) leaf extracts for the biocontrol of Tenebrio molitor. The complex coacervation method was used for the encapsulation of the extracts. The independent factors considered were the pH (3, 6, and 9), pectin (4, 6, and 8% w/v), and whey protein isolate (WPI) (0.50, 0.75, and 1.00% w/v). The Taguchi L9 (33) orthogonal array was used as the experimental matrix. The response variable was the mortality of T. molitor after 48 h. The nine treatments were applied by immersion of the insects for 10 s. The statistical analysis revealed that the most influential factor on the microencapsulation was the pH (73% of influence), followed by the pectin and WPI (15% and 7% influence, respectively). The software predicted that the optimal microencapsulation conditions were pH 3, pectin 6% w/v, and WPI 1% w/v. The signal-to-noise (S/N) ratio was predicted as 21.57. The experimental validation of the optimal conditions allowed us to obtain an S/N ratio of 18.54, equivalent to a T. molitor mortality of 85 ± 10.49%. The microcapsules had a diameter ranging from 1–5 μm. The microencapsulation by complex coacervation of neem leaf extract is an alternative for the preservation of insecticidal compounds extracted from neem leaves.

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“…The release kinetics of Azadirachtin from microencapsulated Azadirachta indica A. Juss (Meliaceae) bioinsecticide was reported [31]. Several factors such as the physical properties and differences due to particle factors were found to affect the active compounds' release kinetics.…”

Section: Release Rate and Mechanism Of Encapsulated Essential Oilmentioning

confidence: 99%

An overview of the potential of Citrus hystrix (kaffir lime) essential oil as mosquito repellent

Zaki

Jai

Shahrizan

et al. 2022

IJAAS

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A chemical-based insect repellent such as N, N-diethyl-3-methylbenzamide (DEET) is commonly used against all insects despite its toxicity in humans. Hence, a repellent agent from natural sources of plant essential oil was introduced. Some of the plants which have the repellent potential are catnip, hairy basil, citronella, vetiver, clove, and citrus. Citronellal, citronellol, geraniol, eugenol, eugenol-acetate, and beta-caryophyllene are among the repellent active components in these plants. Citrus hystrix (kaffir lime) was known for several applications in food, health, and skincare, but its potential as mosquito repellent is still new. This overview paper highlights the potential of kaffir lime essential oil as a mosquito repellent and the encapsulation of essential oil related to mosquito repellent. Several studies on kaffir lime essential oil as mosquito repellent was conducted and revealed that the major repellent active components are citronellol and limonene. Pure kaffir lime essential oil provides one-hour repellent protection against the mosquito. However, an addition of 5% vanillin prolongs the protection time to three hours. Essential oil is easily vaporized at room temperature which shortens its effectiveness time. Encapsulation of the essential oil would control the vaporization process and hence prolong its efficiency. Nonetheless, almost no research work reported on the encapsulation of kaffir lime essential oil and the release mechanism of the encapsulated kaffir lime.

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Azadirachta indica A. Juss (Meliaceae) microencapsulated bioinsecticide: Spray drying technique optimization, characterization, in vitro release, and degradation kinetics

Cited by 8 publications

References 90 publications

Effect of Inlet Air Temperature and Quinoa Starch/Gum Arabic Ratio on Nanoencapsulation of Bioactive Compounds from Andean Potato Cultivars by Spray-Drying

Effect of Inlet Air Temperature and Quinoa Starch/Gum Arabic Ratio on Nanoencapsulation of Bioactive Compounds from Andean Potato Cultivars by Spray-Drying

The Insecticidal Activity of Azadirachta indica Leaf Extract: Optimization of the Microencapsulation Process by Complex Coacervation

An overview of the potential of <i>Citrus hystrix</i> (kaffir lime) essential oil as mosquito repellent

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