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Applications of Nanomaterials in Agriculture and Their Safety Aspect
Published in Devarajan Thangadurai, Saher Islam, Jeyabalan Sangeetha, Natália Cruz-Martins, Biogenic Nanomaterials, 2023
Leo Bey Fen, Ahmad Hazri Abd. Rashid, Nurul Izza Nordin, M.A. Motalib Hossain, Syed Muhammad Kamal Uddin, Mohd. Rafie Johan, Devarajan Thangadurai
Moreover, the use of CNTs has been reported to control plant bacterial diseases, thereby increasing crop productivity (Wang et al., 2013). CNTs may also be applicable as sensors for detecting pathogens in plants and the environment. The suitable and specific sensor has been developed to detect and quantify Botrytis cinerea in apparently healthy apple plants before the manifestation of disease symptoms. The highly specific and sensitive sensors could provide early signal about invading pathogens in plants (Fernandez-Bald° et al., 2009; Kaphle et al., 2018). For the control of fruit pests, nano-gels containing the pheromone methyl eugenol are considered as a cost-effective approach, allowing lower application doses with full efficacy (Bhagat et al., 2013). Naturally found nanosized ashes and inorganic metal NPs are reported to show antimicrobial, insecticidal or antifungal characteristics (Stadler et al., 2010; Yildiz and Pala, 2012). NPs coated with poly-ethylene-glycol and loaded with garlic essential oils are proved to be effective in controlling stored-product pests (Yang et al., 2009). Nanotechnology not only protects crops and food products from harmful effects of pests but also fosters crop yield and quality, reducing the required quantity of fertilizers to apply (Peters et al., 2016).
Encapsulation of volatile oils with antimicrobial activity in chitosan-βCD molecular inclusion complexes by spray drying
Published in Drying Technology, 2023
Wanderley P. Oliveira, Luciane M. Miguel
By comparing the experimental maximum and minimum DL values of Eugenol and Thymol in the SA and LS VOs βCD MICs, we can verify that the former is near 22% higher, although in the liquid feed the difference is only 12%. This trend can also be observed in the experimental results for the VOs mixture (MIX-VO), where the values obtained for Eugenol are almost 55% higher than those determined for Thymol. These results evidence a high affinity for Eugenol compared to Thymol during the MICs formation. Eugenol has also exhibited the highest binding affinity with βCD compared with four other constituents of Ocimum basilicum VO, namely methyl eugenol, linalool, estragole, and eucalyptol-βCD.[37] Competitive βCD complexation experiments performed with Thymol and Eugenol have shown a ratio of 50:50,[17] but experiments were done with simple mixtures. The simultaneous competition of the other compounds diminished the complexation affinity of both markers’ constituents slightly,[38,39] but the effects appear to be more significant for Thymol than Eugenol.
Beneficial additive values of wastewater irrigation of two aromatic plants grown in low fertile soil
Published in Water Science, 2020
Ibrahim H. Elsokkary, Alaa F. Aboukila
The percentage of essential oil components showed a different response to both TWW irrigation and plant species. While α-Pinene, Camphor, β-Pinene, Myrcene, 1,8 Cineole, p-Cymene, d-Camphor, Bornyl acetate and Eugenol in basil showed the positive response, Linalyl acetate, β-Caryophyllene, Methyl chavicol, α-Terpineol, and Methyl eugenol showed the negative response (Figure 3). In oregano, the percentages of Sabinene, Myrcene, α-Terpinene, Limonene, δ- Terpinene, p-Cymene, Linalyl acetate, and Terpinen-4-ol had been increased while those of α-Pinene, β-Phellandrene, Terpinolene, Linalool, β-Caryophyllene, Methyl chavicol, and α-Terpineol had been decreased (Figure 4). The variations in the percentage of components of essential oil could be explained based on both the nutritional value of TWW and plant species (Bensabah, Lamiri, & Naja, 2015; Khalifa at al., 2011; Kotb et al., 2012; Rahimi et al., 2010). These data indicate additions of significant beneficial values from the treated wastewater to the low fertile calcareous soil to produce the valued aromatic plants.
Mass transfer and hydrodynamic study of supercritical carbon dioxide extraction of 1,8-cineole from small cardamom seeds
Published in Chemical Engineering Communications, 2018
Kaninika Paul, Paramita Bhattacharjee
In the present study, we have considered the steady-state approach to characterize the sc-CO2 extraction of 1,8-cineole from SCs since within an extraction time of 90 min, 77% of 1,8-cineole content was extracted by sc-CO2 (from data given in Table 1). Both steady and unsteady states have been considered in our previous study on methyl eugenol extraction from tuberose flowers, since the yield of methyl eugenol obtained after 135 min of extraction was only 36% of the total amount present in tuberose flowers (Ghosh and Bhattacharjee, 2016). The basic assumptions of the steady-state model in the current investigation were similar to those reported in our previous investigations (Chatterjee and Bhattacharjee, 2013; Chatterjee et al., 2017).