scholarly journals Effects of croton urucurana extracts and crude resin on Anagasta kuehniella (Lepidoptera: Pyralidae)

2009 ◽  
Vol 52 (3) ◽  
pp. 653-664 ◽  
Author(s):  
Luciana Barboza Silva ◽  
Walciane Silva ◽  
Maria Ligia Rodrigues Macedo ◽  
Marize Terezinha Lopes Pereira Peres
Keyword(s):  
Ethyl Acetate ◽  
Insecticidal Activity ◽  
Active Ingredient ◽  
Artificial Diet ◽  
Ethyl Acetate Fraction ◽  
Economic Importance ◽  
Fourth Instar ◽  
Food Conversion ◽  
Anagasta Kuehniella ◽  
Lepidoptera Pyralidae

Hundreds of plant species have been studied in order to find out the active ingredient responsible for their insecticidal activity against the pests of economic importance. To verify the insecticidal activity in the husk of stem of Croton urucurana Baillon 1864 (Euphorbiaceae) against Anagasta kuehniella Zeller 1879 (Lepidoptera: Pyralidae), the methanolic (EMeOH) extract, dichloromethane fraction (FDM), ethyl acetate fraction (FAE) and crude resin, incorporated into an artificial diet were evaluated. EMeOH (0.5, 1.0 and 2.0%) and crude resin (2.0%) interfered with neither the weight nor the survival of fourth instar larvae and other analyzed parameters. FDM (2.0%) fraction caused mortality of 65%, and the artificial diet containing 2.0, 1.0 and 0.5% FAE caused 100, 55 and 68% mortality respectively when compared with the control, confirming the least efficiency rates of food conversion for FDM(2.0%) and FAE(1.0%). The tryptic analysis performed with the midgut fluid of fourth-instar larvae demonstrated that tryptic and chymiotryptic activities for the larvae fed artificial diet containing EMeOH and crude resin were not different.

scholarly journals PENGARUH CAMPURAN EKSTRAK AGLAIA HARMSIANA PERKINS DAN DYSOXYLUM ACUTANGULUM MIQ. (MELIACEAE) TERHADAP MORTALITAS DAN OVIPOSISI PLUTELLA XYLOSTELLA (L.) (LEPIDOPTERA: YPONOMEUTIDAE)

2004 ◽  
Vol 4 (1) ◽  
pp. 1-7
Author(s):  
Lucy Yuswanti ◽  
Djoko Prijono
Keyword(s):  
Ethyl Acetate ◽  
Insecticidal Activity ◽  
Plutella Xylostella ◽  
Concentration Ratio ◽  
Ethyl Acetate Fraction ◽  
Fourth Instar ◽  
Mixture Concentration ◽  
Oviposition Inhibition ◽  
Choice Tests

Effect of Mixture of Aglaia harmsiana Perkins and  Dysoxylum acuntangum Miq. (Meliaceae) Extracts on Mortality and Oviposition of Plutella xyostella (L.) (Lepidoptera: Yponomeutidae). This study was conducted to evaluate the effect of mixture of extracts of Aglaia harmsiana seeds and Dysoxylum acutangulum leaf petioles on mortality and oviposition of Plutella xyostella (L.) (Lepidoptera: Yponomeutidae). The insecticidal activity of ethyl acetate fraction of A. harmsiana and D. Acutangulum extracts and their mixture (concentration ratio of Ah and Da was 4:1) was evaluated against the thrid-instar P. xylostella was assessed by choice tests using broccoli seddlings. LC50 and LC95 of A. harmsiana extracts against the thirds the+fourth instar larvae were 0.054% and 0.129%, respectively, those of D. acutangulum extract were 0.031% and 0.103%, and those of the the mixture of A. harmsiana and D.acutangulum extract and the mixture at concentrations of 0.06% - 0.38%, 0.3%, and 0.02% - 0.3%, respectively, significantly reduced the number of eggs deposited by the female, P. xylostella on broccoli seedings, with oviposition inhibition indices of 0.30-0.59, 0.28-0.45 and 0.045-0.70. A.harmsiana ectract at all concentrations tested was phytotoxic to broccoli seedlings, whereas D. acutangulum extract was not. Mixture of A. harmsiana and D. acutangulum extract were phytotoxic to broccoli seedlings at concentrations of 0.06-0.3%. Thus, A. hamarsiana extract of mixture containing the extract should be used with caution and their phytotoxicity should be specifically tested on target crops before being used in the field.

scholarly journals Synthesis Method for Thiosulfonate and Report of Its Insecticidal Activity in Anagasta kuehniella (Lepidoptera: Pyralidae)

2012 ◽  
Vol 13 (12) ◽  
pp. 15241-15251 ◽  
Author(s):  
Edson dos Santos ◽  
Fernando Gonçalves ◽  
Paulo Prado ◽  
Daniele Sasaki ◽  
Dênis de Lima ◽  
...  
Keyword(s):  
Insecticidal Activity ◽  
Synthesis Method ◽  
Anagasta Kuehniella ◽  
Lepidoptera Pyralidae

scholarly journals Screening Bioactivity of Kersen Fruits (Muntingia calabura L.) as a Sunscreens Candidate

2021 ◽  
Vol 7 (1) ◽  
pp. 29-38
Author(s):  
Syamsu Nur ◽  
Nursamsiar Nursamsiar ◽  
Muhammad Aswad ◽  
Aprilia Ester Eunike Tumigolung ◽  
Risfah Yulianti ◽  
...  
Keyword(s):  
Ethyl Acetate ◽  
Active Ingredient ◽  
Ethanol Extract ◽  
Ethyl Acetate Fraction ◽  
Flavonoid Content ◽  
In Vitro Method ◽  
Best Value ◽  
Phenolic And Flavonoid ◽  
Muntingia Calabura

Kersen (Muntingia calabura L) fruits have the potential to be used as an active ingredient in sunscreens because of phenolic and flavonoid content that can absorb UV rays. This study aims to determine the percentage of erythema/pigmentation transmission and SPF value as parameters for sunscreen activity.  Kersen fruits were extracted by maceration using 96% ethanol. The ethanol extract of Kersen Fruits was also fractionated to separate the components of the active compounds based on the polarity level using n-hexane, ethyl acetate, and ethanol as solvents. The test was carried out using the in vitro method by measuring the ability of the material to absorb ultraviolet light at a wavelength of 292.5-372.5 nm. This research was conducted at concentrations of 100, 200, 400, 600, and  800 µg/mL for ethanol, lyophilisate, n-hexane, and ethanol fractions, while the ethyl acetate fraction concentrations are 50, 100, 150, 200, 250 µg/mL. The results showed the best value at the ethyl acetate fraction concentration of 250 µg/mL with % Te of 5.28 and % Tp of 28.65 and the SPF value of 16.54. Based on the % Te and Tp, the ethyl acetate fraction exhibited protection against erythema and pigmentation with the category of extra protection and based on the SPF value with the category of ultra protection.

A key to the larvae of some species of Phycitinae (Lepidoptera, Pyralidae) associated with stored products, and of some related species

1963 ◽  
Vol 54 (2) ◽  
pp. 175-188 ◽  
Author(s):  
Audrey D. Aitken
Keyword(s):  
Plodia Interpunctella ◽  
Economic Importance ◽  
Stored Products ◽  
Mussidia Nigrivenella ◽  
Important Species ◽  
Anagasta Kuehniella ◽  
Cadra Cautella ◽  
Ephestia Elutella ◽  
Lepidoptera Pyralidae ◽  
Imported Food

A key to the fully grown larvae of 11 species of Phycitinae is given. Of these, the following eight are known in Britain either as stored-products pests or associated with imported food:— Ephestia elutella (Hb.), Anagasta kuehniella (Zell.), Cadra cautella (Wlk.), C. calidella (Gn.), C. figulilella (Gregson), Plodia interpunctella (Hb.), Mussidia nigrivenella Rag. and Ectomyelois ceratoniae (Zell.). The key is preceded by a brief account of the economic importance of these species in Britain.The other three species are Ectomyelois decolor (Zell.), E. muriscis (Dyar) and Paramyelois transitella (Wlk.). Although these are native to the Americas and are unknown in Britain, they comprise, together with E. ceratoniae, the economically important species formerly of the genus Myelois Huebner.The larvae of Mussidia nigrivenella, P. transitella and of the three species of Ectomyelois are described.

Utilization of the ethyl acetate fraction of Zanthoxylum rhetsa bark extract as an active ingredient in natural sunscreen formulations

2017 ◽  
Vol 96 ◽  
pp. 165-172 ◽  
Author(s):  
Ramesh kumar Santhanam ◽  
Muhammad Tayyab Akhtar ◽  
Syahida Ahmad ◽  
Faridah Abas ◽  
Intan Safinar Ismail ◽  
...  
Keyword(s):  
Ethyl Acetate ◽  
Active Ingredient ◽  
Ethyl Acetate Fraction ◽  
Bark Extract

scholarly journals Larvicidal, leishmanicidal, insecticidal and anthelmintic effects of Sterculia diversifolia stem bark and leaf

2020 ◽  
Vol 15 (1) ◽  
pp. 32-38 ◽  
Author(s):  
Fazle Rabbi ◽  
Amir Zada ◽  
Amna Nisar
Keyword(s):  
Ethyl Acetate ◽  
Insecticidal Activity ◽  
Video Clip ◽  
Anthelmintic Activity ◽  
Ethyl Acetate Fraction ◽  
Stem Bark ◽  
Rhyzopertha Dominica ◽  
Moderate Activity ◽  
Dependent Manner ◽  
Full Screen

The present study was conducted to evaluate the stem bark and leaf of Sterculia diversifolia for larvicidal, leishmanicidal, insecticidal and anthelmintic activities. In the larvicidal activity, dichloromethane and ethyl acetate fractions of both stem bark and leaf showed significant results, while the ethyl acetate fraction showed mild activity (IC50: 70.09 ± 0.09 μg/mL; 71.25 ± 0.01 μg/mL). In the insecticidal activity of the stem bark, n-hexane fraction showed mild activity (20-40% mortality) against all three subjects, while the insecticidal activity of leaf, methanolic extract and n-hexane fractions showed moderate activity (60% mortality) against Rhyzopertha dominica and Callosobruchus analis. In the anthelmintic activity of stem bark and leaf, ethyl acetate fraction exhibited activity in a dose-dependent manner giving time of paralysis and death shorter followed by dichloromethane fraction with 200 mg/mL concentration. Hence, it is clear that S. diversifolia stem bark and leaf possess larvicidal, leishmanicidal, insecticidal and anthelmintic agents. Video Clip of Methodology: Anthelmintic Activity: 5 min 29 sec:  Full Screen   Alternate  

Phytochemical screening for identification of bioactive compounds of Lantana camara Linn. (Verbenaceae) responsible for larvicidal action against Aedes triseriatus Say, 1823 (Diptera : Culicidae)

ENTOMON ◽  
2019 ◽  
Vol 44 (2) ◽  
pp. 117-126
Author(s):  
Rhitayu Chakraborti ◽  
Probir Kumar Bandyopadhyay
Keyword(s):  
Ethyl Acetate ◽  
Bioactive Compounds ◽  
Active Ingredient ◽  
Crude Extract ◽  
Ethyl Acetate Extract ◽  
Lantana Camara ◽  
Mosquito Larvae ◽  
Aedes Triseriatus ◽  
Phytochemical Screening ◽  
Lc50 Value

Study to assess the larvicidal property of Lantana camara leaves against Aedes triseriatus larvae found that the ethyl acetate extract had profound larvicidal action with the crude extract having a LC50 value of 409.831ppm. GC-MS analysis of the ethyl acetate extract confirmed the presence of twenty-one compounds out of which beta-caryophyllene covered the highest percentage of the chromatogram area. Further tests with beta-caryophyllene against the mosquito larvae proved it to be the active ingredient of L. Camara with a LC50 value of 104.243ppm.

Assessment of Antimicrobial Activity and total Polyphenol Content of Rosa multiflora and Rosa wichuraiana

2019 ◽  
Vol 10 (04) ◽  
pp. 646-650
Author(s):  
Hyeusoo Kim ◽  
Kyeong Won Yun
Keyword(s):  
Antimicrobial Activity ◽  
Ethyl Acetate ◽  
Antimicrobial Agents ◽  
Ethyl Acetate Fraction ◽  
Rosa Multiflora ◽  
Polyphenol Content ◽  
Total Polyphenol ◽  
Water Fraction ◽  
Total Polyphenol Content ◽  
Rosa Species

The fruit of Rosa multiflora has been used as traditional herbal medicine in Asian countries. The present investigation was undertaken to study the antimicrobial activity and total polyphenol content of hexane, ether, ethyl acetate, water fraction of methanol extract of fruit and flower from Rosa multiflora and Rosa wichuraiana. Antimicrobial activity of the mentioned fractions against 3 gram-positive and 4 gram-negative bacteria using disk diffussion method. The measurement of minimal inhibition concentration (MIC) showed that the ethyl acetate fraction of the two Rosa species is the most effective against the tested bacteria. The total polyphenol content of ethyl acetate fraction of the two Rosa species is higher than the other fractions. The results indicate the antimicrobial activity was related with the total polyphenol content and the fruit and flower of the two Rosa species can be considered as a natural source of antimicrobial agents.

Antioxidant Activity, Inhibition α-Glucosidase of Ethanol Extract of Strychnos nitida G. Don and Identification of Active Compounds

2019 ◽  
Vol 5 (3) ◽  
pp. 11-20
Author(s):  
Stefani Dhale Rale ◽  
Hasim Hasim ◽  
Syamsul Falah
Keyword(s):  
Antioxidant Activity ◽  
Ethyl Acetate ◽  
Ethanol Extract ◽  
Ethyl Acetate Fraction ◽  
Inhibition Activity ◽  
Active Compounds ◽  
Activity Inhibition ◽  
Activity Test ◽  
Ic50 Value ◽  
Treatment Of Diabetes

This study aims to find the treatment of diabetes using natural materials by exploring plants in the province of East Nusa Tenggara. his research was conducted out by extracting the Strychnos nitida G.Don stem using a method of maceration by ethanol 70%. Ethanol extract was then fractionated using n-hexane and ethyl acetate. Simplicia from maceration and fractionation results were then tested for antioxidant activity, α-glucosidase inhibition activity and identification of active compounds. The results showed that ethyl acetate fraction had the lowest IC50 value of 86.83 μg / ml. Results of the α-glucosidase activity test showed that ethyl acetate fraction and n-heksan fraction at 900 ppm had the highest percentage of inhibition of 34.23% and 33.89%. Identification using LCMS/MS method showed that ethyl acetate fraction consist of Benzenemethamine, N, N-dioctyl- as an antioxidantcompound and compound 24-methyl-5-cholestone-hexol as an antidiabetic compound. From the results of this study, we concluded that the extract of kayu ular Strychnos nitida G.Don stem has inhibition activity toward α-glucosidase enzyme.

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