scholarly journals Thumba (Citrullus colocynthis L.) seed oil: a potential bio-lubricant base-stock

2015 ◽  
Vol 66 (1) ◽  
pp. e055 ◽  
Author(s):  
M. S.L. Karuna ◽  
K. Kamalakar ◽  
G. N.V.T. Sai Manoj ◽  
R. B.N. Prasad
Keyword(s):  
Seed Oil ◽  
Base Stock ◽  
Citrullus Colocynthis ◽  
Lubricant Base Stock

Preparation of Epoxidized Fatty Acid Ethyl Ester from Tung Oil as a Bio-lubricant Base-Stock

2019 ◽  
Vol 11 (8) ◽  
pp. 4145-4155
Author(s):  
Yi-Hsu Ju ◽  
Novia Nur Fitriana Sari ◽  
Alchris Woo Go ◽  
Meng-Jiy Wang ◽  
Ramelito C. Agapay ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Ethyl Ester ◽  
Acid Ethyl Ester ◽  
Fatty Acid Ethyl Ester ◽  
Base Stock ◽  
Tung Oil ◽  
Lubricant Base Stock

Activity of Calcium Methoxide Catalyst for Synthesis of High Oleic Palm Oil Based Trimethylolpropane Triesters as Lubricant Base Stock

2012 ◽  
Vol 51 (15) ◽  
pp. 5438-5442 ◽  
Author(s):  
Teck-Sin Chang ◽  
Hassan Masood ◽  
Robiah Yunus ◽  
Umer Rashid ◽  
Thomas S. Y. Choong ◽  
...  
Keyword(s):  
Palm Oil ◽  
Base Stock ◽  
High Oleic ◽  
Lubricant Base Stock

scholarly journals ONE-POT-TWO-STEP SYNTHESIS OF BIOLUBRICANT BASE STOCK FROM RUBBER SEED OIL

2020 ◽  
Vol 45 (5) ◽  
Author(s):  
G.O . Madojemu ◽  
E.A. Elimian ◽  
M.C. Ejimadu ◽  
C.O. Okieimen ◽  
F.E. Okieimen
Keyword(s):  
Hydrogen Peroxide ◽  
Acetic Acid ◽  
Response Surface ◽  
Seed Oil ◽  
Chemical Properties ◽  
Base Stock ◽  
One Pot ◽  
Rubber Seed Oil ◽  
Rubber Seed ◽  
Physico Chemical

Biolubricant base stock was synthesized in this work from rubber seed oil in a one-pot-two-step process of epoxidation and hydroxylation. Rubber seed oil was extracted using a Soxhlet apparatus. The in situ epoxidation of the rubber seed oil with peracid (hydrogen peroxide and acetic acid) was analysed and optimized considering three process variables with their range of values given as temperature of 35-50 , time of 60-180 mins and mole ratio of hydrogen peroxide to acetic acid of 1:0.25-1:1 by applying the central composite design of response surface methodology. The ring opening reaction (hydroxylation) of the epoxide to polyhydroxylated oil (lubricant basestock) with ethanol was carried out using the optimum conditions obtained from the epoxidation process. The rubber seed oil, epoxide and lubricant basestock were characterized in terms of physico-chemical properties using standard methods and in terms of functional groups using Fourier Transform Infrared (FTIR) spectroscopy. Maximum epoxide content of 4.85% and maximum conversion of 71% of rubber seed oil to epoxide was achieved at a temperature of 50􀀀 , reaction time of 180 mins and 1: 0.39 mol/mol of hydrogen peroxide to acetic acid. The predicted values of the epoxidation process reasonably agreed with the experimental ones and model R-squared value of about 95% showed that response surface method can reasonably predict the epoxidation process using a quadratic polynomial model. There was 75% conversion of the epoxide to polyhydroxylated oil (biolubricant basestock), which represents a very high yield. The formation of epoxides and polyhydroxylated oil lead to modification (improvement) in the properties of rubber seed oil as confirmed by the physico-chemical properties and FTIR spectra analysis of the oil, epoxide and lubricant basestock. The study showed that chemical derivatives of rubber seed oils are an attractive, renewable, and ecofriendly alternative to mineral oils for lubricant formulations.

EXTRACTION AND CHARACTERISATION OF CITRULLUS COLOCYNTHIS SEED OIL

2000 ◽  
Vol 4 (1) ◽  
Author(s):  
Moji O Oresanya ◽  
OAT Ebuechi ◽  
K Aitezetmuller ◽  
OA Koleosho
Keyword(s):  
Seed Oil ◽  
Citrullus Colocynthis

scholarly journals Evaluation of the hepato-renal functions and antimicrobial activity of fatty amido benzoic acid synthesised from Citrullus colocynthis seed oil

2021 ◽  
Vol 64 (1) ◽  
Author(s):  
Adewale Adewuyi ◽  
Chiagoziem A. Otuechere ◽  
Nkechi H. Ellah ◽  
Shiva Shanker Kaki ◽  
Scott O. Fayemi ◽  
...  
Keyword(s):  
Benzoic Acid ◽  
Molecular Orbital ◽  
Density Functional ◽  
Seed Oil ◽  
Proton Nuclear Magnetic Resonance ◽  
High Dose ◽  
Rapid Progression ◽  
Drug Resistant ◽  
Citrullus Colocynthis ◽  
Pathogenic Organisms

AbstractRapid progression in resistance to antimicrobial agents by pathogenic organisms is a serious concern. This study aimed to synthesize fatty amido benzoic acid (FBA) from Citrullus colocynthis seed oil (CCO) and evaluate its safety profile as an alternative bioactive agent for combating drug-resistant pathogens. FBA was synthesised through simple chemical reaction route and examined for its antioxidant activity and antimicrobial capacity against selected drug-resistant microorganisms. Effect of FBA on hepato-renal function makers and oxidative stress was also examined using Wistar rats. Density functional theory (DFT) approach was employed to understand the action of FBA with the aid of lowest unoccupied molecular orbital (LUMO) and highest occupied molecular orbital (HOMO). Gas Chromatography (GC) revealed the most abundant fatty acid in CCO to be C18:2 (55.88%). Results from Fourier transformed infrared spectroscopy (FTIR), and proton nuclear magnetic resonance (1HNMR) confirmed the synthesis of FBA with a yield of 97.10%. FBA exhibited antioxidant potential (IC50 of 1.96 µg mL−1) as well as antimicrobial potency. Minimum inhibitory concentration (MIC) of FBA was 0.026 mg mL−1. Biochemical parameters such as alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine, hydrogen peroxide, and lipid peroxidation were significantly elevated in rats administered high dose FBA (100 mg kg−1). Histology of the liver and kidney confirmed the biochemical results. Furthermore, mechanism of action of FBA could be described by quantum chemical analysis to be via nucleophilic interaction, which may be viewed electronically as donor–acceptor interaction. The study presents FBA as a promising antimicrobial agent for combating drug-resistant pathogenic organisms.

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