scholarly journals Bioactivity of Neem Seed Oil mixed with Pyroligneous Acid from Rice Husks against Spodoptera litura

2021 ◽  
Vol 913 (1) ◽  
pp. 012075
Author(s):  
A H Prianto ◽  
Budiawan ◽  
Y Yulizar ◽  
P Simanjuntak
Keyword(s):  
Spodoptera Litura ◽  
Seed Oil ◽  
Neem Seed ◽  
Neem Oil ◽  
Rice Husks ◽  
Antifeedant Activity ◽  
Pyroligneous Acid ◽  
Digital Microscope ◽  
Neem Seed Oil ◽  
Polyphagous Insect

Abstract Biopesticides are environmentally friendly solutions used for pest control management. This is a feature of Neem (Azadirachta indica) seed oil and tar, which provides a synergistic effect on the bioactivity of pyroligneous acid, and both are known to have bioactive compounds. Therefore, the purpose of this study was to evaluate the effect of neem seed oil and tar on pyroligneous acid from rice husks in conventional emulsion form, and their efficacy on the polyphagous insect Spodoptera litura. Neem seed oil was added at concentrations of 10, 20, 30, and 40%, while the concentration of tar was 0.5, 1.0, and 2.0%. The conventional emulsion formed was then characterized using a digital microscope. The addition of neem seed oil and tar were able to increase the antifeedant activity of pyroligneous acid by 63.6 % while both neem oil and tar by 72.6 %. The 2.0% tar formulation (N4PT2) showed the highest antifeedant activity against S.litura (97.9 %) and had the smallest droplets size ranges (2.90 - 24.16 µm). The addition of tar tends to reduce the droplet size of neem oil and increase antifeedant activity.

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

scholarly journals THE EFFECT OF MIXING ON THE PRODUCTION OF BIODIESEL FROM NEEM SEED OIL USING METHANOL AND HOMOGENEOUS CATALYST

2018 ◽  
Vol 6 (9) ◽  
pp. 451-457
Author(s):  
F. Sini ◽  
I. M Atadashi
Keyword(s):  
Seed Oil ◽  
Methyl Esters ◽  
Research Work ◽  
Molar Ratio ◽  
Biodiesel Fuel ◽  
Homogeneous Catalyst ◽  
Neem Seed ◽  
Neem Oil ◽  
Neem Seed Oil ◽  
American Society

Biodiesel was prepared through alkali-catalysed transesterification of neem seed oil using sodium hydroxide as catalyst and ethanol. This process of was carried out firstly throuch eserification and then via transesterification. The process was carried out by varying stirring speed (350, 450, 550, 650, 750 and 850 rpm.) and keeping other variables constant (temperature of 60oC, catalyst concentration of 1w/w%  and 6:1 oil to ethanol molar ratio). In this research work, a yield of 93w/w% was achieved at the stirring speed of 850 rpm. It was observed that the viscosity (3.73mm2/s at 400C) of neem oil methylester generated was within the limit (2-6mm2/s) specified by the American Society for Testing and Materials Standards. The density of neem biodiesel at ambient temperature (250C) was found to be 0.85g/ml, which is exactly close to the density of diesel (0.83g/ml). The Flash Point of the neem oil biodiesel produced was 153.60C which above the ASTM D6751 minimum standards for biodiesel fuel of 130oC. Furthermore, Neem oil biodiesel has a pour point of -40C and a cloud point of 20C. These values clearly indicate that the use of neem oil methyl esters in colder regions is limited. However, this value is also indicative of the high potential of this fuel as biodiesel particularly in Northern Nigeria where temperature is always above 20oC, a temperature at which the oil is fluid.

scholarly journals Insecticidal activity of neem oil against Gyropsylla spegazziniana (Hemiptera: Psyllidae) nymphs on Paraguay tea seedlings

2016 ◽  
Vol 76 (4) ◽  
pp. 951-954 ◽  
Author(s):  
M. A. Formentini ◽  
L. F. A. Alves ◽  
M. E. Schapovaloff
Keyword(s):  
Seed Oil ◽  
Control Strategies ◽  
Alternative Methods ◽  
Neem Seed ◽  
Neem Oil ◽  
Synthetic Insecticide ◽  
Systemic Activity ◽  
Plant Soil ◽  
Neem Seed Oil ◽  
Tea Plants

Abstract Gyropsylla spegazziniana (Paraguay tea ampul) is one of the most important pests of Paraguay tea plants, and prohibition of synthetic insecticide use for control of this pest has led to the search for alternative methods. This laboratory study aimed to compare different control strategies for G. spegazziniana, utilizing a commercial neem seed oil product. Paraguay tea seedlings were treated with neem oil solution both pre- and post-infestation with 5th instar nymphs. The systemic action of neem oil was also evaluated by treating plant soil with the neem oil solution, followed by transfer of the insects to plants 24 h post-treatment. Spray treatments were effective against the pest, especially post-infestation (80% mortality), demonstrating the potential of neem oil for control of the Paraguay tea ampul. No significant effects were observed with respect to systemic activity.

scholarly journals Biodiesel Preparation, Process Optimization and Characterization from Neem seed Oil

2021 ◽  
Vol 9 (10) ◽  
pp. 525-527
Author(s):  
Anusha P
Keyword(s):  
Seed Oil ◽  
Edible Oils ◽  
Edible Oil ◽  
Biodiesel Production ◽  
Neem Seed ◽  
Neem Oil ◽  
Environment Friendly ◽  
Qualitative And Quantitative ◽  
Neem Seed Oil ◽  
Ft Ir

Abstract: The consumption of edible oil is very high in the country and still the indigenous production does not meet the demand and considerable amount of edible oil is imported. Also, it is not advisable to divert these sources for biodiesel production. On the other hand, the non-edible oil resources could be a solution for biodiesel production. Non-edible oil from the plant seeds is the most promising alternative fuel for internal combustion engine because it is renewable, environment friendly, non-toxic, biodegradable has no sulphur and aromatics, has favourable combustion value and higher cetane number. Extensive work has been done on the transesterification of non-edible oils; however, no significant work has been done on the optimization of transesterification process, oil characterization and fuel analysis of most of the non-edible seed oils. Low cost and abundantly found non-edible oils such as Neem oil could be a better option for biodiesel processing. In the present work, optimization of transesterification process and analysis of biodiesel from non-edible oil was done; based on optimized protocol for biodiesel production from Neem seed oil converted into fatty acid methyl esters (FAME) through base catalyzed trans esterification using an optimum ratio of 1:6 (Oil : Methanol) at 600C. Biodiesel from these sources was analyzed for qualitative and quantitative characterization by using, GC-MS and FT-IR techniques. Based on qualitative and quantitative analysis of biodiesel, it is concluded that the biodiesel from these species can be feasible, cost effective and environment friendly. Keywords: Neem oil, Biodiesel, Tran’s esterification, GC-MS, and FT-IR.

scholarly journals Comparing Neem Seed Oil with Calcium Chloride and Fungicides for Controlling Postharvest Apple Decay

HortScience ◽  
1993 ◽  
Vol 28 (7) ◽  
pp. 719-720 ◽  
Author(s):  
Harold E. Moline ◽  
James C. Locke
Keyword(s):  
Seed Oil ◽  
Gray Mold ◽  
Seed Extract ◽  
Penicillium Expansum ◽  
Neem Seed ◽  
Neem Oil ◽  
Blue Mold ◽  
Aqueous Emulsion ◽  
Bitter Rot ◽  
Neem Seed Oil

The antifungal properties of a hydrophobic neem (Azadirachta indica A. Juss.) seed extract (clarified neem oil) were tested against three postharvest apple (Malus domestica Borkh.) pathogens—Botrytis cinerea (pers.) ex Fr. (gray mold), Penicillium expansum Thom. (blue mold rot), and Glomerella cingulata (Ston.) Spauld. & Schrenk. (bitter rot). The antifungal activity of neem seed oil also was compared to that of CaCl2. A 2% aqueous emulsion of the clarified neem seed oil was moderately fungicidal to B. cinerea and G. cingulata in inoculated fruit, but bad little activity against P. expansum. Ethylene production was reduced 80% in fruit dipped in 2% neem seed oil compared to wounded, inoculated controls. Neem seed oil was as effective an antifungal agent as CaCl2, but the effects of the two combined were not additive.

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.

scholarly journals Functional Properties of Neem Oil as Potential Feedstock for Biodiesel Production

2015 ◽  
Vol 34 ◽  
pp. 7-14
Author(s):  
Prithviraj Bhandare ◽  
G.R. Naik
Keyword(s):  
Seed Oil ◽  
Fossil Fuel ◽  
Raw Material ◽  
Biodiesel Production ◽  
Seed Oils ◽  
Neem Oil ◽  
Chemical Parameters ◽  
Saponification Value ◽  
Neem Seed Oil ◽  
Biodiesel Fuels

Fossil fuel resources are decreasing daily while biodiesel fuels are attracting increasing attention worldwide as blending components or direct replacements for diesel fuel in vehicle engines. In this experiment the seed oils of 30 Neem (Azadirachta indica. A. juss) biotypes were screened and evaluated for their physio-chemical parameters for oil content, biodiesel yield, density, viscosity, iodine value , free fatty acid and saponification value. Hence the neem seed oil tested in this current study could be the potential sources of raw material for biodiesel production.

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
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