scholarly journals Morphological alterations in salivary glands of Rhipicephalus sanguineus ticks (Acari: Ixodidae) exposed to neem seed oil with known azadirachtin concentration

Micron ◽  
2016 ◽  
Vol 83 ◽  
pp. 19-31 ◽  
Author(s):  
R.N. Remedio ◽  
P.H. Nunes ◽  
L.A. Anholeto ◽  
P.R. Oliveira ◽  
I.C.G. Sá ◽  
...  
Keyword(s):  
Salivary Glands ◽  
Seed Oil ◽  
Rhipicephalus Sanguineus ◽  
Neem Seed ◽  
Morphological Alterations ◽  
Neem Seed Oil

scholarly journals Impact of Environment on Callosobruchus maculatus (Coleoptera: Chrysomelidae) Response to Acetone Extract of Gnidia kaussiana Meisn (Thymeleaceae) and Ocimum canum Sims (Lamiaceae) Botanical Insecticides

2020 ◽  
pp. 128-139
Author(s):  
D. Kosini ◽  
E. N. Nukenine ◽  
K. H. Tofel ◽  
J. W. Goudoungou ◽  
D. J. Langsi ◽  
...  
Keyword(s):  
Seed Oil ◽  
Callosobruchus Maculatus ◽  
Botanical Insecticides ◽  
Neem Seed ◽  
Ecological Zones ◽  
Dose Rates ◽  
Grain Damage ◽  
Insect Mortality ◽  
Neem Seed Oil ◽  
Agro Ecological Zones

The response of pests to the effects of a botanical insecticide can vary spatially and temporally. To test whether efficacy of botanicals differed spatially, the insecticidal efficacy of Gnidia kaussiana and Ocimum canum against Callosobruchus maculatus was investigated in two different agro-ecological zones of Cameroon, i.e. Maroua and Ngaoundéré (sudano-sahelian and sudano-guinean zones, respectively). Experiments were, therefore, conducted to determine the insect mortality, progeny production, grain damage and weight loss in cowpea. G. kaussiana was more effective against C. maculatus in Maroua (LD50 = 0.12 g/kg at 6th day of exposure) than in Ngaoundéré (LD50 = 4.35 g/kg at 6th day of exposure). Moreover, it was more toxic than O. canum extract and neem seed oil (reference), irrespective to the agro-ecological zones. Overall, the performance of O. canum did not vary significantly between the two zones, and was slightly more active (LD50 = 4.66 g/kg) than the reference insecticide neem seed oil (LD50 = 4.89 g/kg) in Ngaoundéré in contrast to the results recoded in Maroua (LD50 = 1.44 g/kg and 2.60 g/kg, respectively for neem seed oil and O. canum at 6 days post exposure). In view of the above, there were some discrepancies in extract performance between Maroua and Ngaoundéré. Thus, the establishment of dose rates of insecticidal products formulated from G. kaussiana must be specific to an environment in contrast to those from O. canum.

Study of anti-inflammatory effect of neem seed oil (Azadirachta indica) on infected albino rats

2014 ◽  
Vol 1 (3) ◽  
pp. 66 ◽  
Author(s):  
ManasRanjan Naik ◽  
Divya Agrawal ◽  
Rasmirekha Behera ◽  
Ayon Bhattacharya ◽  
Suhasini Dehury ◽  
...  
Keyword(s):  
Azadirachta Indica ◽  
Seed Oil ◽  
Albino Rats ◽  
Neem Seed ◽  
Neem Seed Oil ◽  
Anti Inflammatory ◽  
Inflammatory Effect

scholarly journals Microbial-derived bio-surfactant using neem oil as substrate and its suitability for enhanced oil recovery

2020 ◽  
Author(s):  
Temitope Ogunkunle ◽  
Adesina Fadairo ◽  
Vamegh Rasouli ◽  
Kegang Ling ◽  
Adebowale Oladepo ◽  
...  
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Seed Oil ◽  
Petroleum Industry ◽  
Neem Seed ◽  
Core Flooding ◽  
Core Samples ◽  
Two Samples ◽  
Neem Seed Oil ◽  
Acting Agent

AbstractThe limitation in the formulation and application of synthetic surfactants in petroleum industry is owing to their high cost of production or importation and their associated toxic effect which have been proven to be harmful to the environment. Hence it is vitally imperative to develop an optimum surfactant that is cost-effective, environmentally safe (biodegradable) and equally serves as surface acting agent. This study discusses the production of microbial produced bio-surfactant and its application in enhanced oil recovery. The bacteria Pseudomonas sp. were isolated from urine and allow to feed on neem seed oil as the major carbon source and energy. The crude bio-surfactant produced from the fermentation process was used to prepare three (3) solutions of bio-surfactants at different concentrations of 5 g/500 mL, 10 g/500 mL and 15 g/500 mL, and their suitability for enhanced oil recovery (EOR) was evaluated. Reservoir core samples and crude oil collected from the Niger Delta field were used to evaluate the EOR application of the microbial-derived surfactants. The sets of experimental samples were carried out using core flooding and permeability tester equipment, and the results obtained were compared with conventional waterflooding experiments. The three bio-surfactant concentrations were observed to recover more oil than the conventional waterflooding method for the two core samples used. Optimum performance of the produced microbial-derived surfactant on oil recovery based on the concentrations was observed to be 10 g/500 mL for the two samples used in this study. Therefore, eco-friendly bio-surfactant produced from neem seed oil using Pseudomonas sp. has shown to be a promising potential substance for enhanced oil recovery applications by incremental recoveries of 51.9%, 53.2%, and 29.5% at the concentration of 5, 10, and 15 g/500 mL and 24.7%, 28.7%, and 20.1% at concentration of 5, 10, and 15 g/500 mL for the two core samples, respectively.

Homogeneous catalyzed transesterification of neem seed oil to biodiesel and its kinetic modeling

2020 ◽  
Author(s):  
Dominic O Onukwuli ◽  
Jonah C Umeuzuegbu ◽  
Callistus N Ude ◽  
Chukwuemeka C Nwobi‐Okoye
Keyword(s):  
Kinetic Modeling ◽  
Seed Oil ◽  
Neem Seed ◽  
Neem Seed Oil

scholarly journals Analgesic Effects of Leptadenia hastata Leaf Extract and Neem Seed Oil

2019 ◽  
Vol 3 (8) ◽  
pp. 146-148
Author(s):  
Yahaya M Katagum ◽  
Suleiman Yunusa ◽  
Aminu U Kura ◽  
Sani Kawure
Keyword(s):  
Leaf Extract ◽  
Seed Oil ◽  
Neem Seed ◽  
Analgesic Effects ◽  
Neem Seed Oil

scholarly journals Effect of Extraction Methods and Storage Time on the Yield and Qualities of Neem Seed (Azadirachta indica A. Juss) Oil

2021 ◽  
Vol 18 (1) ◽  
pp. 55-62
Author(s):  
J.B. Hussein ◽  
J.O.Y. Ilesanmi ◽  
H.A. Yahuza ◽  
I. Nkama
Keyword(s):  
Storage Time ◽  
Seed Oil ◽  
Cold Water ◽  
Chemical Properties ◽  
Extraction Methods ◽  
Hot Water ◽  
Phytochemical Analysis ◽  
Neem Seed ◽  
Neem Seed Oil ◽  
And Storage

The effects of extraction methods and time of storage on the yield and qualities of neem seed oil were investigated. Three extraction methods: cold water, hot water, and n-hexane were used while the extracted oils were stored at room temperature for six months. The yield, chemical properties, qualitative and quantitative phytochemical analysis of the fresh and stored oils were evaluated at every two-month interval using standard methods. The results showed that n-hexane gave the highest oil yield (62 %), followed by hot water (49 %), and cold water (42 %). The chemical properties ranged as follows; peroxide value: (7.02–25.56, 6.30–26.76 and 8.99–24.16 Meq/kg), saponification value: (133.95–245.26, 114.09–288.09 and 141.11–250.12 mg KOH/g oil), iodine value: (51.69–6.98, 56.73–7.88 and 54.87–9.51 mg/wij’s) and acid value: (18.01–55.99, 11.34–85.12 and 14.62–56.88 mg KOH/g oil) for cold water, hot water, and n-hexane respectively. The qualitative phytochemical analysis indicated the presence of flavonoids, coumarins, terpenoids, triterpenoid, and steroid contents. Conclusively, the extraction methods and storage time affect the yield and qualities of the extracted neem seed oil, while the chemical and phytochemical results revealed that the extracted oils were good for both medical and industrial applications. Keywords:  Neem seeds, oils, extraction methods, storage time, chemical and phytochemical properties

scholarly journals EFFECTS OF NEEM, STRAIGHT AND SOLUBLE OILS AS CUTTING FLUIDS ON TOOL WEARING DURING METALWORK PRACTICALS IN TECHNICAL COLLEGES IN KANO STATE, NIGERIA

2020 ◽  
Vol 6 (6) ◽  
pp. 166-177
Author(s):  
Lkama J. Drambi ◽  
Yusuf Mohammed
Keyword(s):  
Mild Steel ◽  
Analysis Of Variance ◽  
Seed Oil ◽  
Mean Value ◽  
Cutting Fluid ◽  
Cutting Fluids ◽  
Neem Seed ◽  
Neem Oil ◽  
Neem Seed Oil ◽  
The Mean

The study investigated the effects cutting fluids on tool wearing on high speed steel (HSS) using mild steel workpiece for teaching machining operation. Two specific objectives guided the study, two corresponding research questions were poised and two null hypotheses were formulated. The theoretical frame work for the study was hinged on experiential learning theory as propounded by Rogers (1969). The growing demand for biodegradable materials has opened an avenue for using vegetable oils such as neem seed oil, castor oil and water melon seed oil as an alternative to conventional cutting fluids. In this study, some aspects of the turning process on mild steel using HSS cutting tool at variety of spindle speed, feed rate and constant depth of cut were observed using neem seed oil, soluble oil and straight oil in comparison. The data collected from the study was analyzed using mean and analysis of variance (ANOVA). The decision rule was that, the smaller the mean value obtained the more effective the cutting fluid and the higher the mean value, the less effective the cutting fluid. The hypotheses were tested at α=0.05 significance level using analysis of variance (ANOVA). The findings of the study revealed that soluble oil is more effective in reducing tool wearing than neem oil and straight oil at variety of feed rates and spindle speeds during machining operation. Also there is no significant difference in the mean readings of tool wearing when using neem oil, soluble oil, and straight oil as cutting fluid. It was therefore recommended that machinists should be encouraged to use soluble oil which has greater advantage over neem and straight oils in machining operations

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