Sublethal Effects of Ethanol Extract of Ocimum sanctum on Laboratory Bred Population of Dengue Mosquito Aedes aegypti L. (Diptera: Culicidae)

2018 ◽  
Vol 03 (01) ◽  
Author(s):  
Mohd Shazad ◽  
Kamal Kumar Gupta ◽  
Sunil Kayesth ◽  
Shailendra Kumar
2020 ◽  
Vol 49 (1) ◽  
pp. 45-54
Author(s):  
Thiago Andre Santos de Andrade ◽  
Ivanise Maria de Santana ◽  
George Chaves Jimenez ◽  
Eulina Tereza Nery Farias ◽  
Lucia Oliveira de Macedo ◽  
...  

The control of Aedes aegypti has been considered one of the most important public health challenges worldwide. Chemical compounds have long been used for this purpose, but resistance to these molecules has also increased. Therefore, over the last few years several studies have focused on the development of alternative tools, particularly those based on plant metabolites. The purpose of this study was to assess the larvicidal activity of Caesalpinia ferrea and Lippia origanoides against Ae. aegypti. Larvae (L3) of Ae. aegypti Liverpool and Rockefeller strains, as well as of the Recife population were exposed to different concentrations  of C. ferrea (ranging from 13.1 to 105 mg/mL) and L. origanoides (ranging from 16.3 to 130 mg/mL), and the mortality rate was evaluated up to 48 hours after the beginning of the experiment. All tested groups and  ontrol group were quadruplicated. For C. ferrea, mortality ranged from 42.5% to 100% for Ae. aegypti Liverpool strain,from 67% to 100% for Ae. aegypti Rockfeller strain, and 57% to 100% for Ae. aegypti Recife population after 48 hours of larval exposure. For L. origanoides, the larvicidal activity ranged from 75% to 100% for Ae. aegypti Liverpool strain, from 61.5% to 100% for Ae. aegypti Rockfeller strain, and from 60.5% to 100% for Ae.aegypti Recife population. The hydro ethanol extract of C. ferrea and L. origanoides presented larvicidal activity against Ae. aegypti.KEY WORDS: Aedes aegypti; hydro ethanol extracts; Caesalpinia ferrea; Lippia sidoides; botanical insecticide; mosquitoes.


2018 ◽  
Vol 37 (4) ◽  
pp. 506-511
Author(s):  
Febrina Dyta Pravitri ◽  
Khomsatun Khomsatun

AbstrakPenyakit Demam Berdarah Dengue salah satu penyakit endemis yang dapat menimbulkan wabah.Salahsatu upaya yang penting adalah memutus rantai penularan, yaitu dengan menggunakaninsektisida.Pengendalian vektor DBD umumnya menggunakan insektisida kimia yang berdampak negatifterhadap lingkungan.Penelitian ini dilakukan untukmengetahui efektivitas pengaruh berbagai konsentrasiekstrak daun kemangi (Ocimum sanctum) terhadap kematian larva Aedes aegypti.Metode penelitian iniadalah quasi exsperiment dengan rancangan the posttest-only control group untuk menghitung kematianlarva Aedes aegypti pada konsentrasi 0,3%, 0,9% dan 15% ekstrak daun kemangi. Konsentrasi tersebutdimasukkan kedalam enamel berukuran 250 ml yang masing-masing berisi 25 ekor larva Aedes aegypti,diamati pada jam ke 1, 2, 3, 4, 5, 6 dan 24 jam.Hasil penelitian menunjukkan bahwa ada perbedaanberbagai konsentrasi ekstrak daun kemangi (Ocimum sanctum) dalam mematikan larva Aedes aegypti,untuk konsentrasi 0,3% adalah 7 ekor (26,4%), konsentrasi 0,9% adalah 14 ekor (54,4%) dan konsentrasi1,5% adalah 20 ekor (81,2%).Simpulan penelitian ini adalah ekstrak daun kemangi dengan berbagaikonsentrasi yang digunakan belum efektif karena belum mampu membunuh larva Aedes aegypti sampai90% selama 24 jam.Disarankan untuk peneliti selanjutnya dapat menggunakan konsentrasi ekstrak daunkemangi yang lebih tinggi.


2020 ◽  
Vol 151 ◽  
pp. 01013
Author(s):  
Luthfi Suharyo ◽  
Rizqulla K. Arthari ◽  
Fitria S.N. Rochmah

Aedes aegypti is the main vector of dengue fever that most commonly occurred in Indonesia. The application of botanical insecticides is being developed as an alternative vector control. Botanical components have been reported as the potential alternative to inhibit the process of oviposition and fecundity suppression. This study aims to determine the oviposition deterrent activity and ovicidal effects of ethanol extract of Pometia pinnata leaves against Aedes aegypti. Oviposition deterrent assay was conducted on twenty bloodfed females in a cage (40 cm x 40 cm x 40 cm). One treated oviposition trap and one control oviposition trap were placed in the opposite corner of the cage. Four replicates were performed for each concentration. The eggs were counted and analyzed after 72 hours of trial. Ethanol extract of Pometia pinnata leaves have antioviposition effect on female mosquitoes Aedes aegypti at 400 ppm (effective repellency / ER = 56.38%; oviposition active index/OAI = -0.39) and 500 ppm (ER = 66.4%; OAI = -0.49). In the ovicidal assay, twentyfive eggs are used for determination ovicidal effect and five replicates were performed for each concentration. The hatched larvae were collected and counted daily. The ethanolic extract of Pometia pinnata leaves at 0.05%, 0,1%, 0.15%, 0.2%, and 0.25% concentration have ovicidal activity of 11%, 28%, 87%, 94%, and 98% against Aedes aegypti eggs, respectively. This study revealed that the ethanol extract of Pometia pinnata leaves could be a potential alternative in controlling the dengue vector.


2019 ◽  
Vol 2 (1) ◽  
pp. 21
Author(s):  
Vanna Lidya Kharisma ◽  
Setiawan Koesdarto ◽  
Koesnoto Supriandono ◽  
Lucia Tri Suwanti ◽  
Sri Agus Sudjarwo ◽  
...  

The aims of this research are to determine concentration, exposure time, interaction between concentration and exposure time of ethanol extract of Ocimum sanctum Linn. Leaves to cause death toward Ascaridia galli in vitro, and the value of LC50 and LC90 ethanol extract of Ocimum sanctum Linn. Leaves. Research design that has been used in the research was completely randomized design. This research used 200 samples of Ascaridia galli with length 7-11 cm without differentiating their sex. The concentration ethanol extract of Ocimum sanctum Linn. leaves were 1.25%, 2.5%, 5%, 10%. The control was using CMC-Na 0.5%. Each treatment then being replicated four times. The observation and recording of dead worm were done at 0, 3, 6, 12 and 24 hours. Ascaridia galli were declared dead if there was no movement while disturbed by anatomy tweezers and dipped in slightly warm water (50ºC). The obtained data was analyzed using Anova Factorial and continued with Duncan Multiple Range Test by SPSS for Windows 22. The result were 10% concentration and exposure time for 24 hours caused the most mortality toward Ascaridia galli. Interaction between concentration and exposure time resulted 10% concentration ethanol extract of Ocimum sanctum Linn. leaves in 24 hours caused the most mortality towards Ascaridia galli. Probit analysis was used to calculate the LC50 and LC90 of Ocimum sanctum Linn. leaves. The results were LC50 ethanol extract of Ocimum sanctum Linn. leaves at 6 hours was 14.8%, at 12 hours was 4.8% and at 24 hours was 3.0% and the LC90 at 24 hours was 9.1%.


2020 ◽  
Vol 7 (1) ◽  
pp. 107
Author(s):  
Novia Ariani ◽  
Dwi Rizki Febrianti ◽  
Rakhmadhan Niah

ABSTRAK Tanaman kemangi banyak dimanfaatkan oleh masyarakat untuk pengobatan infeksi khususnya bagian daun. Hal ini dikarenakan daun kemangi memiliki senyawa aktif seperti minyak atsiri, alkaloid, saponin, flavonoid, triterpenoid, steroid, tannin dan fenol yang dapat menghambat pertumbuhan bakteri. Tujuan penelitian ini dilakukan untuk mengetahui ada tidaknya aktivitas, mengetahui diameter zona hambat dan mengetahui klasifikasi kekuatan aktivitas daya hambat antibakteri ekstrak etanol daun kemangi. Jenis penelitian ini adalah penelitian eksperimental dengan metode difusi lubang sumuran dengan teknik pengambilan sampel adalah purposive sampling.  Konsentrasi ekstrak yang digunakan yaitu konsentrasi 100%, 80%, 60%, 40%, 20%, sedangkan untuk kontrol positif digunakan klindamisin 30µg, dan kontrol negatif yang digunakan etanol 96%. Hasil diameter zona hambat yang terbentuk diukur dengan jangka sorong. Hasil penelitian menunjukkan bahwa ekstrak etanol daun kemangi memiliki aktivitas dalam menghambat pertumbuhan bakteri Staphylococcus aureus dengan diameter rata-rata yang didapat dari setiap perlakuan yaitu 100% (10,08 mm), 80% (8,10 mm), 60% (6,49 mm), 40% (4,29 mm), 20% (2,26 mm), dan sebagai klasifikasi kekuatan aktivitas daya hambat antibakteri yaitu pada konsentrasi 100% kuat, 80%-60% sedang dan 40%-20% lemah. Kata Kunci : Daun kemangi, Ekstrak, Difusi, Staphylooccus aureus  ABSTRACT Part of the basil plant (Ocimum sanctum L.) that widely used by people for treatment of infections is basil leaves. This is because basil leaves have active compounds such as essential oils, alkaloids, saponins, flavonoids, triterpenoids, steroids, tannins and phenols which can inhibit bacterial growth. This research aimed to find out the presence or absence of activity, to determine the diameter of the inhibitory zone and the classification of antibacterial mention against what the name of bacterial is activity of ethanol extract of basil leaves. The type of this research is experimental research with a well diffusion method with sampling technique is purposive sampling. The concentration of extracts used were concentrations of 100%, 80%, 60%, 40%, 20%, while as positive control is  clindamycin 30µg, and the negative control used 96% ethanol. The resulting diameter of the inhibition zone is measured by the calipers.  The results showed that the ethanol extract of basil leaves had an activity in inhibiting the growth of Staphylococcus aureus bacteria with an average diameter obtained from each treatment that was 100% (10,08mm); 80% (8,10mm); 60% (6,49mm); 40% (4,29mm); 20% (2,26mm), and as the antibacterial activity classification, that were strong in 100% of extract concentration, medium in 60-80% of extract concentration, and weak in 20-40% of extract concentration. Keywords : Basil leaf, Extract, Diffusion, Staphylooccus aureus


2021 ◽  
Vol 13 (1) ◽  
pp. 69-78
Author(s):  
Anna Yuliana ◽  
Rusdi Aris Rinaldi ◽  
Nur Rahayuningsih ◽  
Firman Gustaman

Musa x paradisiaca L. leaves are known to contain phenols, flavonoids, saponins, tannins, and other compounds that can be used as larvicides. This study aims to determine the effect of Musa x paradisiaca L leaves’ ethanol extract granules on the mortality of Aedes aegypti larvae. The Research was experimental in two stages of effectiveness testing, that are extract and granule formula effectiveness test. Data were analyzed using the Kruskal-Wallis test and the Mann-Whitney test. The extraction method used was maceration using 96% ethanol. The concentration of the extract dosage used were 0.2; 0.5; 1; 2; and 4%, with control (+) temephos and control (-). Repetitions were carried out 3 times with a sample total of 675 larvae. Observations were made for 12 and 24 hours. Preparation of granules using 2 formulas, formula 1 granules without extract and formula 2 granules with the extract. To fulfill the granule formulation criteria, the preparation was evaluated. The results showed that the concentration of 4% extract was the most effective at 98.7%, as stated by the Kruskal-Wallis test result,p-value <0.05, which means that there was an effect on the effectiveness of larvicide. The percentage of mortality of larvae given formula 2 is 100% and based on the Mann-Whitney test with value p<0.05, there is a difference between granule 1 and 2 formula. Criteria of granule including moisture content (1.72 %), angle of rest 240, flow velocity (50 gr/sec), and dispersion time (2.25 minutes). The granular formula of Musa x paradisiaca L leaves can make the application easier and hopefully can be used as effectively as synthetic larvicide in the community.


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