scholarly journals Assessment of Physico-chemicaal Properties, Antifungal and Anti-sprouting Efficacy of Essential oils (Moringa oleifera and Sesame indicum Oil)

2021 ◽  
Vol 4 (3) ◽  
pp. 59-71
Author(s):  
Abel Y.K. ◽  
Olaleye O.O. ◽  
Ayanda I.S. ◽  
Olasope T.D.
Keyword(s):  
Moringa Oleifera ◽  
Seed Oil ◽  
Chemical Properties ◽  
Seed Oils ◽  
Chemical Parameters ◽  
Ph Values ◽  
Peroxide Values ◽  
Physico Chemical ◽  
Antifungal Potential

This study was aimed at evaluating the physico-chemical properties, antifungal and anti-sprouting efficacy of Moringa oleifera and Sesame indicum seed oil extracts. Physico-chemical parameters were determined and compared for both oils. There was significant (p < 0.05) difference observed between the refractive values (1.4570 and 1.4633), free fatty acid (FFA) (2.04 and 3.21 mg KOHg-1), acid values (6.08 and 6.43 mg KOHg-1), pH values (4.55 and 5.33), saponification values (210.75 and 215.57 mg of KOHg-1), peroxide values (5.40 and 5.80 meqO2/kg), specific gravity (0.8897 to 0.9161 g/cm3) and yield (8.25% and 32.02%) for cold press extracts of Sesame and Moringa seed oils respectively. In vitro antifungal efficacy of both oils (M. oleifera and S. indicum) against Aspergillus niger shows a range of 43.63% to 58.18% inhibition. No anti-sprouting effect was recorded across all concentrations tested for the two oils. However, the antifungal potential of both seed oil extracts (Moringa and Sesame) exhibited moderate inhibitory properties with the highest percentage inhibition at 48 hrs.

Extraction and Characterization of Underutilized Seed Oils Sampled in South-western Nigeria

2019 ◽  
Vol 7 (1) ◽  
pp. 48-52
Author(s):  
Olufunso Omowunmi Adeniyi
Keyword(s):  
Seed Oil ◽  
Citrullus Lanatus ◽  
Chemical Properties ◽  
Sesame Seed ◽  
Acid Value ◽  
Seed Oils ◽  
Brown Colour ◽  
Physico Chemical ◽  
Soxhlet Apparatus ◽  
Nutritional Benefits

Citrullus lanatus (watermelon) and Sesamum indicum (sesame) are edible plants that provide a lot of nutritional benefits to man; despite their wide consumption and benefits, their seed oils remain underutilized. Seed oils from these plants found in south-western Nigeria were analyzed for their physico-chemical properties. Oil was extracted from the seeds using Soxhlet apparatus and n-hexane as the solvent; physico-chemical properties were determined using standard analytical procedures. Watermelon seed oil had a golden brown colour while sesame seed oil had a carton brown colour; they had saponification values of 258.99 mgKOH/g and 261.34 mgKOH/g respectively. Acid value ranged from 2.13 – 2.51 mgKOH/g; iodine value of 39.7 - 42.3 gI2/100g and peroxide value of 1.39 – 2.43 meqKOH/g was determined in the seed oils. Oils from these seeds have numerous domestic and industrial potentials such as cooking, frying, production of soaps, and cosmetics to mention a few.

scholarly journals Physico-Chemical Properties of Biodiesel Produced from Neem Oil

2015 ◽  
Vol 47 ◽  
pp. 40-48 ◽  
Author(s):  
Prithviraj Bhandare ◽  
G.R. Naik
Keyword(s):  
Social Factors ◽  
Chemical Properties ◽  
High Viscosity ◽  
Hydroxyl Groups ◽  
Seed Oils ◽  
Neem Oil ◽  
Chemical Parameters ◽  
High Quality ◽  
Physico Chemical

Biodiesel is becoming prominent among the alternatives to conventional petro-diesel due to economic, environmental and social factors. The quality of biodiesel is influenced by the nature of feedstock and the production processes employed. High amounts of free fatty acids (FFA) in the feedstock are known to be detrimental to the quality of biodiesel. In addition, oils with compounds containing hydroxyl groups possess high viscosity due to hydrogen bonding. American Standards and Testing Materials, (ASTM D 6751) recommends FFA content of not more than 0.5% in biodiesel and a viscosity of less than 6 mm2/s. In this experiment the seed oils of 30 Neem (Azadirachta indica. A. juss) biotypes were screened and evaluated for their physico-chemical parameters for their potential in biodiesel. The properties of Neem biodiesel were compared with Bureau of Indian Standards (BIS) and the fuel properties of diesel. Results showed that high amounts of FFA in oils produced low quality biodiesel while neutralized oils with low amounts of FFA produced high quality biodiesel. The quality of biodiesel from jatropha and castor oils was improved greatly by neutralising the crude oils.

Some physico-chemical properties of Moringa oleifera seed oil extracted using solvent and aqueous enzymatic methods

2005 ◽  
Vol 93 (2) ◽  
pp. 253-263 ◽  
Author(s):  
S.M. Abdulkarim ◽  
K. Long ◽  
O.M. Lai ◽  
S.K.S. Muhammad ◽  
H.M. Ghazali
Keyword(s):  
Moringa Oleifera ◽  
Seed Oil ◽  
Chemical Properties ◽  
Physico Chemical ◽  
Moringa Oleifera Seed ◽  
Enzymatic Methods

Chemical Composition and Nutritional Analysis of Seeds Cactus (Opuntia ficus-indica.L)

2019 ◽  
Vol 15 (4) ◽  
pp. 394-400
Author(s):  
Farah K. Benattia ◽  
Zoheir Arrar ◽  
Fayçal Dergal
Keyword(s):  
Nutritional Value ◽  
Seed Oil ◽  
Chemical Properties ◽  
Mineral Analysis ◽  
Toxic Compounds ◽  
Standard Methods ◽  
Lead And Cadmium ◽  
Peroxide Values ◽  
Physico Chemical ◽  
Nutritional Analysis

Background:The Prickly pear "Opuntia ficus-indica" is a xerophytic plant of the Cactaceae family, which represents a gold mine, can be exploited in several sectors.Objective:The present study describes and provides basic information on the physico-chemical properties, mineral and lipid compositions of the cactus seeds from Algeria (Relizane), in order to evaluate the nutritional value of the Opuntia extracts.Methods:The seed oil was extracted by soxhlet, and analyzed by GC-MS the physical properties were determined using standard methods of Association of Analytical Communities (AOAC).Results:The cactus powder and its seeds showed a content of 6.42% in lipids and 91.24% in ashes. Freshly extracted oil showed acid and peroxide values respectively 2.66 mg (KOH)g and 1.5Meq (O2)/Kg. Iodine and saponification values were 199.5 g (I2)/100 g and 181.44 mg (KOH)/g respectively. Main fatty acids identified by GC-MS were linoleic (C18:2), oleic (C18:1), palmitic (C16:0), palmitoleic (C16:1) and stearic (C18:0) acids with respective contents 60.23%, 13.35%, 14.20%, 1.05 and 3.12%. Mineral analysis revealed significant levels of calcium and potassium namely 72 and 3.50mg/100g respectively, and they contain no trace of the toxic compounds (lead and cadmium).Conclusion:The nopal fruit represents a very important nutritional value. This plant is far from being a simple cactus, it is a source of immense wealth.

The effect of origin and physico-chemical properties on the kinetics of reduction of mixed NiO-Fe2O3 oxides with hydrogen

1986 ◽  
Vol 51 (10) ◽  
pp. 2098-2108 ◽  
Author(s):  
Milan Pospíšil ◽  
Jan Topinka
Keyword(s):  
Mixed Oxides ◽  
Mutual Influence ◽  
Spinel Phase ◽  
Chemical Properties ◽  
Inhibitory Effect ◽  
Chemical Parameters ◽  
Physico Chemical ◽  
Preliminary Annealing ◽  
Kinetics Of ◽  
Kinetics Of Reduction

We investigated the effect of origin and some physico-chemical parameters on the kinetics of reduction with hydrogen of two series of mixed NiO-Fe2O3 oxides differing by their composition, the character of their precursors (mixed crystalline nitrates and coprecipitated hydroxides) and their decomposition temperature.This effect manifested itself by different magnitudes of specific surfaces of the mixed oxides and coherent regions of present phases as well as by different oxidizing abilities of the surface and differences in morphology and phase composition of corresponding samples in both series investigated. Nonlinear or nonmonotonous composition dependences of physico-chemical parameters investigated point to a mutual influence of individual components, which is also a function of the system origin and which modifies its reactivity during its reduction with hydrogen. The kinetics of the reduction was studied thermogravimetrically at 320-410 °C. The reduction of oxides of the hydroxide origin is catalytically accelerated by primarily reduced nickel, whereas in corresponding samples of the nitrate series, the total NiO is bound to the spinel phase and the reduction is delayed. Experimental IR spectra, the effect of preliminary annealing and DTA of the mixed oxides point to an inhibitory effect of water, which is constitutionally bound in trace admixtures of the goethite phase, on the kinetics of reduction of samples in the hydroxide series.

Synthesis of hollow mesoporous ruthenium nanoparticles: evaluation of physico-chemical properties and toxicity

RSC Advances ◽  
2015 ◽  
Vol 5 (97) ◽  
pp. 79616-79623 ◽  
Author(s):  
Sakthivel Ramasamy ◽  
Devasier Bennet ◽  
Sanghyo Kim
Keyword(s):  
Structural Characterization ◽  
Biomedical Application ◽  
Chemical Properties ◽  
Template Method ◽  
Ruthenium Nanoparticles ◽  
Facile Synthesis ◽  
Physico Chemical

Facile synthesis of hollow mesoporous structured Ru-NPs by dual template method, structural characterization and in vitro biophysical and uptake evaluation for biomedical application.

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