Chemical compositions of leaf extracts from Conocarpus erectus L. (Combretaceae) and their bioactivities against Tribolium castaneum Herbst (Coleoptera: Tenebrionidae)

Rajabpour, Ali; Mashahdi, Ali Reza Abdali; Ghorbani, M. R.

doi:10.1016/j.aspen.2019.01.015

Cited by 20 publications

(9 citation statements)

References 18 publications

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“…This plant is generally cultivated for ornamental and landscaping purpose in municipal area. However, biomass waste disposal issue may occur from this plant due to improper conduct [ 8 , 9 ]. The Conocarpus trunk part fibre contains great amount lignocellulosic components and its structural built-up is closely similar to the reported study on Ficus natalensis plant [ 10 ], which serve as major cellulose source.…”

Section: Introductionmentioning

confidence: 99%

Isolation and Production of Nanocrystalline Cellulose from Conocarpus Fiber

et al. 2021

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Conocarpus fiber is a lignocellulosic biomass rich in cellulose potentially used for producing nanocrystalline cellulose (NCC), a biomaterial extensively employed in various application fields. In the present work, different hydrolysis times of 10, 20 and 30 min were applied to chemically pre-treated Conocarpus fiber to produce CPNC1, CPNC2, and CPNC3 particles. With acid hydrolysis treatment, the yield of NCC product was successfully retained at 17–19%. Individual, rod-like shapes of NCC particles could be clearly observed under microscopy examination. From chemical composition analysis, a relatively pure cellulose compartment was produced for all NCC samples with substantial removal of lignin and hemicellulose. The physicochemical analysis proved that each nanoparticle sample possessed strong cellulose crystalline structure. For thermal analyses, the heat resistance of NCCs was gradually enhanced with the increased hydrolysis times. Therefore, the extracted NCC product from Conocarpus fiber could be a green nano-filler for developing nanocomposite material in the future.

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Section: Introductionmentioning

confidence: 99%

Isolation and Production of Nanocrystalline Cellulose from Conocarpus Fiber

et al. 2021

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“…Of the mentioned compounds, phenolic compounds can act as a toxin for herbivores, after being oxidized; they become toxic peroxidases or polyphenolic metabolites that cause physiological disturbances in the growth of insects and mites and their development processes [21]. As an example of phenolic compounds, tannins play important roles in pest organisms, such as anti-food and food deterrent properties, as they reduce the efficiency of digestion in phytophagous arthropods through their chemical bonds [22]. Mostafa et al [23] studying the allelopathic effect of Alhagi maurorum extract as a phytocaricide against the mite Panonychus citri (Acari: Tetranychidae), found an increase in the mortality rate of individuals due to the presence of tannin compounds.…”

Section: Resultsmentioning

confidence: 99%

Palm Red Mite Management with Soursop Seed Plant Residue Extracts

Piffer¹,

Bolsoni²,

Fornaciari³

et al. 2023

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Raoiella indica Hirst, 1924 (Prostigmata: Tenuipalpidae), is one of the leading pest mites in palm and banana trees, however, there are few control methods available for this pest species. Therefore, this work aimed to evaluate the acaricidal effect of soursop seed extract (Annona muricata L.) on R. indica adults. The experiment was conducted in a completely randomized design using soursop seed extract with 7 replicates and 12 individuals of R. indica per replicate. The experimental units consisted of discs of coconut palm leaves (4 cm in diameter), with cotton moistened at the bottom of the Petri dish (10.0 × 1.2 cm) and around the disc to maintain turgor and prevent mites from escaping. The application was performed using an airbrush, connected to a calibrated compressor with a constant pressure of 1.3 psi and 1 mL of solution per repeat plate. The acaricidal effect was evaluated 24, 48, and 72 hours after spraying. Mortality data were corrected and submitted to Probit analysis (p ≤ 0.05) using the statistical program R, with the LC 50 and LC 90 calculated for the extract. At the maximum concentration (15%), the soursop seed extract showed mortality of 70% of individuals of R. indica, and the LC 50 was 6.58%. It was concluded that the soursop seed extract showed acaricidal potential on R. indica in the laboratory.

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“…Tannins, for example, a secondary compound obtained in this work, have anti-food and food-dissuading properties. This compound can reduce the efficiency of digestion in phytophagous arthropods through its chemical bonds [18] . Djilali et al, [19] evaluated the insecticidal effect of tannins extracted from Cydonia oblonga against Tribuliumm confusum (Coleoptera: Tenebrionidae) and observed dosedependence of the concentrations studied, where with the increase in the concentration of tannins, there was an increase in insect mortality.…”

Section: Discussionmentioning

confidence: 99%

Extracts of plant residues from soursop peels in the management of palm red mite

Piffer¹,

Fornaciari²,

Bolsoni³

et al. 2023

J. Entomol. Zool. Stud.

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Raoiella indica Hirst, 1924 (Prostigmata: Tenuipalpidae), is one of the main pest mites of palm and banana trees, causing significant damage in producing regions. Thus, the objective of this work was to evaluate the acaricidal effect of soursop peel extract (Annona muricata L.) on R. indica adults. The experiment was conducted in a completely randomized design using soursop peel extract, with 7 replications and 12 individuals of R. indica per replication. The experimental units consisted of discs of coconut palm leaves (4 cm in diameter), with cotton moistened at the bottom of the Petri dish (10.0 x 1.2 cm) and around the disc to maintain turgor and prevent mites from escaping. The application was carried out using an airbrush, connected to a calibrated compressor with a constant pressure of 1.3 psi and 1 mL of solution per plate. The acaricidal effect was evaluated 24, 48, and 72 hours after spraying. Mortality data were corrected and subsequently submitted to probit analysis (p≤0.05) using the statistical program R, with the LC50 and LC90 of the extract being calculated. The soursop peel extract at the maximum concentration used (15%) showed mortality of 80% of individuals of R. indica. The LC50 was 1.934%. It was concluded that extracts from soursop peel have acaricidal potential on R. indica in the laboratory.

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Chemical compositions of leaf extracts from Conocarpus erectus L. (Combretaceae) and their bioactivities against Tribolium castaneum Herbst (Coleoptera: Tenebrionidae)

Cited by 20 publications

References 18 publications

Isolation and Production of Nanocrystalline Cellulose from Conocarpus Fiber

Isolation and Production of Nanocrystalline Cellulose from Conocarpus Fiber

Palm Red Mite Management with Soursop Seed Plant Residue Extracts

Extracts of plant residues from soursop peels in the management of palm red mite

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