Tag: M.W=350-400

Abbas, Rasha Khalid published the artcileChemical constituents of the goat margarine and antibacterial activity against bacterial Pathogens in Sudan, Quality Control of 929-77-1, the main research area is Escherichia Pseudomonas Salmonella goat margarine chem constituent antibacterial.

The margarine constituents were examined by Gas Chromatog.-Mass Spectrometry (GC-MS), it contained 41 compounds, fifteen of them were identified as the major compound, Hexadecanoic acid, Me ester (22.39%), Me stearate (14.92%), Me elaidate (13.80%), Me tetradecanoate (10.74%), Capric acid, Me ester (8.34%) Lauric acid (4.52%) Me octanoate (2.70%), linoleic acid Me ester (2.57%), Me 11-octadecenoate (1.90%), Me caproate (1.77%), Me pentadecanoate (1.72%), Me (8E,11E)-8,11-octadecadienoate (1.70%), Heptadecanoic acid, Me ester, (1.46%),trans-13-Octadecenoic acid, Me ester (Oleic acid) (1.20%), Me palmioleate (1.00%). The effect of goat margarine, against four different pathogenic bacteria Escherichia coli, Pseudomonas aeruginosa, Salmonella typhimurium, and Bacillus cereus, were carried out by using a disk diffusion technique, the highest antibacterial activity was detected against Salmonella typhimurium and the lowest one against Escherichia coli. The antibacterial activity of the antibiotics, (Ciprofloxacin, Tetracycline Ceftriaxone, Chloramphenicol and Gentamycin), were tested by the disk diffusion technique, and by measuring zones of inhibition, shows that there were differences, among all antibiotic the highest activity of antibiotic against bacteria was due to the action of ciprofloxacin. Ceftriaxone and Tetracycline antibiotic give lowest activity.

Journal of Pure and Applied Microbiology published new progress about Antibacterial agents. 929-77-1 belongs to class esters-buliding-blocks, name is Methyl docosanoate, and the molecular formula is C23H46O2, Quality Control of 929-77-1.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Soraggi Battagin, Tiago published the artcileSyzygium aromaticum (clove) essential oil: An alternative for the sanitization of citrus fruit in packinghouses, Product Details of C23H46O2, the main research area is Syzygium aromaticum essential oil citrus fruit packing sanitization.

Citrus canker is a quarentenary disease caused by Xanthomonas citri subsp. citri (X. citri). Thus, sanitization of fresh fruit is a necessary measure before any com. activity. Therefore, we evaluated the clove essential oil (CEO), as an alternative sanitizer for the disinfection of citrus fruit in packinghouses. Tests in vitro and in vivo were carried out to determine the cell inhibitory concentration and to verify the efficacy of the oil for the disinfection of citrus fruits. In in vitro tests, CEO was able to inhibit X. citri when used at 0.75% (volume/volume). In experiments that simulate the sanitization process used in packinghouses, 5% CEO was as effective as the recommended sanitization product based on sodium hypochlorite. GC-MS results showed a high presence of eugenol derivatives as the major compounds of CEO. All results proved that CEO is a potential sanitizer that could be used as an alternative to sodium hypochlorite. Novelty impact statement : Exptl. evidence shows that the clove essential oil (CEO) has the same sanitization efficacy as sodium hypochlorite, which makes of CEO an alternative sanitizer for the decontamination of citrus fruits to be exported to the European Union. CEO is a safer and more sustainable sanitizer for the postharvest disinfection of citrus fruit.

Journal of Food Processing and Preservation published new progress about Antibacterial agents. 929-77-1 belongs to class esters-buliding-blocks, name is Methyl docosanoate, and the molecular formula is C23H46O2, Product Details of C23H46O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Khan, Kehkashan published the artcilePhytochemical and pharmacological profile with biogenetic correlation of bioactive phytoconstituents from the stems of Cordia sinensis Lam, Recommanded Product: Methyl docosanoate, the main research area is phytochem pharmacol bioactive stem Cordia; Cordia sinensis Lam.; GC-MS; biogenesis; phytotoxic.

Present investigation reports first phytochem. profile of Cordia sinensis Lam. stems utilizing GC-FID and GC-MS analyses. Moreover, antibacterial, antifungal, phytotoxic and insecticidal potential of stems was also evaluated. Altogether 33 (�9%) compounds were identified. n-Hexadecanoic acid (15.62-35.55%), Me hexadecanoate (11.22-29.49%), Me octadecanoate (4.10-8.66%) and n-octadecanoic acid (4.24-6.64%), present in all the fractions were the major components identified. Overall 4 hydrocarbons, 7 fatty acids, 12 fatty acid esters, 3 phytosterols, 2 terpenes, a terpenoid and 4 aromatics were identified. It is important to note that methanolic mother extract showed moderate phytotoxic activity at higher dose only. However, GC-MS identifications revealed the presence of several phytoconstituents with reported bioactive potential. Moreover, biogenetic correlation of identified phytoconstituents with other parts of plant confirms their natural existence. Newly identified secondary metabolites of C. sinensis stems may also serve as the chemotaxonomic markers and can be correlated with the genus Cordia and Boraginaceae.

Natural Product Research published new progress about Antibacterial agents. 929-77-1 belongs to class esters-buliding-blocks, name is Methyl docosanoate, and the molecular formula is C23H46O2, Recommanded Product: Methyl docosanoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Aminal, Musarat published the artcileExploiting the potential of Moringa oleifera oil/polyvinyl chloride polymeric bionanocomposite film enriched with silver nanoparticles for antimicrobial activity, Recommanded Product: Methyl docosanoate, the main research area is Moringa Staphylococcus Escherichia Salmonella polyvinyl chloride polymeric bionanocomposite antimicrobial.

The present study focused on the prospect of fabricating a polymeric naturally extracted Moringa oleifera oil bionanocomposite film enriched with silver nanoparticles for antimicrobial activity. In this study, a standard concentration of Moringa oleifera oil (5-10 wt%) was used to fabricate a polymeric bionanocomposite film using polyvinyl chloride (PVC) enriched with silver nanoparticles. The active constituents of the extracted Moringa oleifera oil were verified using gas chromatog.-mass spectrometry. Spectroscopic and microscopic techniques, including SEM, X-ray diffraction, and energy-dispersive X-ray anal., were employed to characterize and study the surface morphol. of the fabricated bionanocomposite film. The antimicrobial activity of the fabricated bionanocomposite film was investigated using different strains of bacteria and fungus. The results revealed well-oriented and excellently dispersed silver nanoparticles in the PVC-Moringa oleifera oil matrix. The bionanocomposite was able to inhibit the growth of Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae, Salmonella typhi, Pseudomonas aeruginosa, Shigella flexneri, and Candida albicans. The combination of nanoparticles with polymers is opening new routes for engineering fixable composites, which showed antimicrobial properties.

International Journal of Polymer Science published new progress about Antimicrobial agents. 929-77-1 belongs to class esters-buliding-blocks, name is Methyl docosanoate, and the molecular formula is C23H46O2, Recommanded Product: Methyl docosanoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Banerjee, Sanjukta published the artcileOptimization of Chlamydomonas reinhardtii cultivation with simultaneous CO2 sequestration and biofuels production in a biorefinery framework, Category: esters-buliding-blocks, the main research area is carbon dioxide Chlamydomonas biofuel biorefinery; Bioethanol; Biorefinery; CO(2) sequestration; Microalgae: Chlamydomonas reinhardtii; Parameter optimization.

Algal biomass is regarded as a sustainable energy feedstock for the future. Enhancement of the biomass and metabolite production of microalgae increases the economic feasibility of the biofuel production process. The present study encompasses on bioethanol production from Chlamydomonas reinhardtii through a biorefinery approach. The biomass and carbohydrate productivity of C. reinhardtii UTEX 90 and CC 2656 were enhanced by optimizing the physico-chem. parameters. The following conditions were found suitable for the improvement of biomass and metabolite content of C. reinhardtii: pH 6.5-7.0, incubation temperature 30°C, initial acetate and ammonium chloride concentration of 1.56 g L-1 and 100-200 mg L-1, resp. Under the optimized operational condition biomass and carbohydrate productivity of C. reinhardtii UTEX 90 and CC 2656 were 512 mg L-1 d-1 & 266.24 mg L-1 d-1 and 364 mg L-1 d -1 & 163.80 mg L-1 d-1, resp. The amount of CO2 sequestered during the cultivation process by UTEX 90 and CC 2656 were 113 mg L-1 d-1 and 74.95 mg L-1 d-1, resp. The depigmented and defatted carbohydrate rich biomass was considered as raw material for bioethanol production The bioethanol yield range was 90-94% of the theor. yield using Saccharomyces cerevisiae INVSC-1 in a double jacket reactor. To improve the viability of the process, the spent media after ethanol fermentation was subsequently used for methane production using mixed microbial consortium. The energy recovery from the process was 40.39% and 39.7% for UTEX 90 and CC 2656, resp. when C. reinhardtii biomass was used as substrate for biofuel production The present investigation concedes with the potentiality of algae as a favorable 3rd generation feedstock to address the existing challenges of clean energy production with concomitant CO2 sequestration.

Science of the Total Environment published new progress about Autotrophic bacteria. 929-77-1 belongs to class esters-buliding-blocks, name is Methyl docosanoate, and the molecular formula is C23H46O2, Category: esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Sayuti, Mohammad published the artcileQualitative analysis and biological screening of Sterculia tragacantha fruit extract, HPLC of Formula: 929-77-1, the main research area is Sterculia tragacantha fruit extract qual analysis biol screening.

Utilization of natural materials as an alternative medicine in warding off diseases is increasingly in demand. This study aimed to determine the secondary metabolite content, antioxidant activity, antibacterial activity, fatty acid content and amino acid content of the extract of Sterculia tragacantha fruit. Sample was evaluated for phytochem. content, antioxidant activity, antibacterial activity, fatty acid content and amino acids. The results indicated that the phytochem. compounds of papaya woton fruit simplicia include flavonoid, tannin, hydrolyzable tannin, phenolic, polyphenols and saponin. The extract of methanol has a strong antioxidant activity while that of n-hexane has a potential as antibacterial to Vibrio alginolyticus. The main fatty acids of Sterculia tragacantha fruit extract were Me palmitate and Me tricosanoate while the main amino acids were L-Arginine, L-Proline and L-Glutamic acid.

International Research Journal of Pharmacy published new progress about Aeromonas hydrophila. 929-77-1 belongs to class esters-buliding-blocks, name is Methyl docosanoate, and the molecular formula is C23H46O2, HPLC of Formula: 929-77-1.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Larraza, Isabel published the artcileMicrowave-Assisted Transesterification of Cooking Oils and GC-MS Determination of Their Fatty Acid Constituents: A Research-Based Integrated Lab Experiment, HPLC of Formula: 929-77-1, the main research area is fatty acid cooking oil GCMS analysis chem education.

An increased public knowledge of the health benefits of unsaturated fats has resulted in a surge of different cooking oils. Intense advertising of various oil brands claiming to provide the best dietary recommendations often leaves buyers unclear of what their best choices are. Herein, we describe a research-based project for upper-level undergraduate students, where they can use interdisciplinary concepts in organic chem., biochem., anal. chem., and instrumental anal. to integrate them in a nutrition laboratory The experiment was tested over two years in the Instrumental Anal. class, where each student analyzed a liquid oil used for cooking or salad dressings. Ten cooking oils were selected: sunflower, safflower, avocado, sesame, peanut, corn, canola, grapeseed, soybean, and a mixture of sunflower and coconut oils. Six different olive oil products were also compared according to their country of origin, fertilizer used (organic or regular), and type of oil (extra virgin, extra light, 100% pure). The fatty acids (FAs) were first derivatized to their volatile Me esters (FAMEs) using a microwave-assisted, base-mediated transesterification reaction and then quantified by GC-MS. After pooling the class data, students were exposed to the practical aspects of food anal. while gaining more understanding of their dietary choices.

Journal of Chemical Education published new progress about Analytical chemistry. 929-77-1 belongs to class esters-buliding-blocks, name is Methyl docosanoate, and the molecular formula is C23H46O2, HPLC of Formula: 929-77-1.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Hadhoum, Loubna published the artcileBio-oil recovery from olive mill wastewater in sub-/supercritical alcohol-water system, HPLC of Formula: 929-77-1, the main research area is biooil Olive mill wastewater subsupercrit alc water hydrothermal liquefaction.

Olive mill wastewater was converted into bio-oil via thermochem. liquefaction with alc./water mixtures in an autoclave (998 mL). The influence of operating conditions on the yield of liquefaction products was investigated. Liquefaction experiments were performed at various reaction temperatures in the range of 240-320 °C. Exptl. results indicated that alc. (methanol or ethanol)/water mixtures had synergistic effects on olive mill wastewater direct liquefaction. The ratio 50% (weight/weight) co-solvent of either ethanol-water or methanol-water and a reaction temperature of 280 °C were found to be the most effective. Under these conditions and for a reaction time of 30 min, the bio-oil yield was 92.31 wt% for ethanol-water and 77.97 wt% for methanol-water. The bio-oil produced with methanol-water mixture has higher energy content (43.20 MJ/kg) compared to the one obtained with ethanol-water mixture (39.21 MJ/kg). In addition, Fourier transform IR spectroscopy and gas chromatog.-mass spectrometry analyses showed high esters concentrations and low free fatty acid content in the obtained bio-oils.

Fuel published new progress about Alcohols Role: NUU (Other Use, Unclassified), USES (Uses). 929-77-1 belongs to class esters-buliding-blocks, name is Methyl docosanoate, and the molecular formula is C23H46O2, HPLC of Formula: 929-77-1.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Jung, Jong-Min published the artcileSynthesis of fatty acid methyl esters via non-catalytic transesterification of avocado oil with dimethyl carbonate, Category: esters-buliding-blocks, the main research area is fatty acid methyl ester transesterification avocado oil dimethyl carbonate.

This paper is primarily a case study on transesterification of avocado oil for the synthesis of biodiesel. Many operational parameters and components were studied in an attempt to identify the optimal process for non-catalytic transesterification, and di-Me carbonate (DMC), an acyl acceptor was identified as key to one very efficient methodol. Non-catalytic transesterification experiments using DMC and/or methanol (MeOH) were conducted under varied temperatures and varied amounts of silica loading. The maximum yield of fatty acid Me esters (FAMEs) of 92.96% was shown to be achievable at 380 °C. The miscibility of avocado oil and DMC was seen to be a key factor in providing a strategic means for delaying thermal cracking of FAMEs. Lastly, this study reported that the optimal mass ratio of silica to oil was over 8 at 380 °C.

Energy Conversion and Management published new progress about Avocado oil Role: RCT (Reactant), RACT (Reactant or Reagent). 929-77-1 belongs to class esters-buliding-blocks, name is Methyl docosanoate, and the molecular formula is C23H46O2, Category: esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Wang, Xin published the artcileSystematic study of the material, structure and lacquering techniques of lacquered wooden coffins from the Eastern Regius Tombs of the Qing Dynasty, China, Formula: C23H46O2, the main research area is mercury sulfide lacquered wooden coffin lacquering pigment.

This paper presents a series of detailed anal. results from lacquered wooden coffins of Emperor Qianlong’s concubines (Huixian, Shujia) and second empress (Wulanala) excavated from the Eastern Regius Tombs of the Qing Dynasty, China. The anal. is focused on the materials used in the lacquered wooden coffins, specifically investigating the pigments, lacquers, organic additives and lacquering techniques using digital microscopy, SEM-EDS, XRD, micro-Raman spectroscopy, FT-IR and THM-Py-GC/MS. The results demonstrate that the mineral pigments were mainly HgS, As2S3, the golden area in the lacquer film layers mainly contained elements Au and Ag, the lacquer ash layers mainly included several layers of stucco and fiber layers arranged alternately, the lacquer sap was urushi, and heat-bodied tung oil was also present in the lacquer. Furthermore, several kinds of lacquering techniques, which demonstrated traditional Chinese lacquering and the rigid hierarchy of funerals in feudal dynasties, are also identified in this investigation.

Microchemical Journal published new progress about Attenuated-total-reflectance Fourier-transform IR spectroscopy. 929-77-1 belongs to class esters-buliding-blocks, name is Methyl docosanoate, and the molecular formula is C23H46O2, Formula: C23H46O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics