In the present work, the oxidation stability of blends of methyl oleate, zinc dialkyldithiophosphate (ZDDP), and a high viscosity index mineral base oil was determined by the method of a rotating pressure vessel, while the antiwear abilities were evaluated on a four-ball friction tester. Thereafter, the thermal decomposition characteristics and oxidation products of the oxidized blends were analyzed by a thermogravimetric analyzer and a gas chromatograph coupled to a mass spectrometer, respectively. The results showed that the antioxidation ability of ZDDP was substantially improved by methyl oleate, while the antiwear capacity is markedly impaired by methyl oleate. Furthermore, the thermal decomposition characteristics and oxidation products of ZDDP-containing oils were altered by methyl oleate. The present study evidently convinced that chemical interactions between ZDDP and methyl oleate had occurred, which were attributed to the increased antioxidation ability and decreased antiwear capacity of ZDDP in oils contaminated with methyl oleate.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6777094 | PMC |
| http://dx.doi.org/10.1021/acsomega.9b02353 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Generation of thiyl radicals in a spatiotemporal controlled manner by light: Applied for the cis to trans isomerization of unsaturated fatty acids/phospholipids.
Redox Biol
December 2024
Department of Chemistry, Brown University, Providence, RI, 02912, USA. Electronic address:
Thiyl radicals are important reactive sulfur species and can cause cis to trans isomerization on unsaturated fatty acids. However, biocompatible strategies for the controlled generation of thiyl radicals are still lacking. In this work, we report the study of a series of naphthacyl-derived thioethers as photo-triggered thiyl radical precursors.
View Article and Find Full Text PDFInvestigation on the Effect of Persian Gum and Transglutaminase Enzyme on Some Physicochemical and Microstructural Characteristics of Low-Fat Ultrafiltrated Iranian White Cheese.
Food Sci Nutr
November 2024
Department of Food Science and Technology, Agricultural Sciences and Natural Resources University of Khuzestan Mollasani Iran.
This study aimed to assess the effect of Persian gum (PG) and microbial transglutaminase enzyme (MTGase) on some physicochemical and microstructural characteristics of low-fat ultrafiltrated Iranian white cheese during 60 days of cold storage. To manufacture the low-fat cheese samples, PG (0%, 0.25%, and 0.
View Article and Find Full Text PDFMechanism of methyl elaidate on the thermal oxidation behavior.
Food Res Int
December 2024
Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou 570228, China; Key Laboratory of Tropical Fruits and Vegetables Quality and Safety for State Market Regulation, Hainan Institute for Food Control, Haikou 570314, China. Electronic address:
The effects of cis-trans isomerization on the oxidation products of oleic acid (composites and structure characterization) were investigated. The reduction of thermal oxidation reaction of methyl elaidate (ME) was 6.72 % lower than that of methyl oleate (MO), and the oxidation products (core aldehydes) first increased and then decreased with the prolongation of thermal oxidation time.
View Article and Find Full Text PDFLarvicidal and enzyme inhibition effects of Phoenix pusilla derived Methyl oleate and malathion on Aedes aegypti strains.
Sci Rep
November 2024
Research & Development Center, Invirustech Co., Inc, Gwangju, 61222, Korea.
This study explores the larvicidal potential of methanolic flower extracts from Phoenix pusilla (Pp-Fe), its major compound, and malathion (MLT), against laboratory strain (LS) and field strain (FS) of Aedes aegypti, the dengue mosquito vector. We identified thirty-one derivatives, with methyl oleate (MO) comprising 28.5% of Pp-Fe.
View Article and Find Full Text PDFScreening of lipase TiL from Tilletia indica for chemo-enzymatic epoxidation of alkenes.
Enzyme Microb Technol
February 2025
Laboratory of Biocatalysis and Synthetic Biotechnology, State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China.
Lipase can mediate the chemo-enzymatic epoxidation of alkenes with the presence of free carboxylic acid and hydrogen peroxide. Four novel lipases with the abilities of chemo-enzymatic epoxidation were mined from the gene database. Lipase TiL originated from Tilletia indica was identified with significant activity on formation of methyl epoxystearate from methyl oleate.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!