Relevant bibliographies by topics / Pentadecanoic acid and n-hexadecanoic acid

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Academic literature on the topic 'Pentadecanoic acid and n-hexadecanoic acid'

Author: Grafiati
Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "Pentadecanoic acid and n-hexadecanoic acid"

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Moses Daben, Janet, Dayil Albert Dashak, and Rahab Uwhomagbejo Isaac. "Gas chromatography-mass spectral structural analysis, phytochemical screening and antimicrobial activity of n-hexane leaf extract of Corymbia torelliana." International Journal of Advanced Chemistry 5, no. 1 (May 6, 2017): 39. http://dx.doi.org/10.14419/ijac.v5i1.7511.

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The chemical studies and antimicrobial activity of n-hexane leaf extract of Corymbiatorelliana was evaluated for medicinal importance. The phytochemical constituents present were steroids, tannins, cardiac glycosides alkaloids and terpenes. The result of sodium fussion test revealed the presence of Phosphorus Nitrogen and Chlorine. The Column Chromatography gave several fractions that were pulled together by Thin Layer Chromatography based on their Rf values, colours and resolutions on different solvent systems. GC-MS was used to identify compounds like: Hexadecanoic acid methyl ester, 9,12-Octadecadienoic acid methyl ester, 2,2,4,4-tetramethyl-1,3-cyclobutanediene, Pentadecanoic acid-14-methyl methyl ester, Hexadecanoic acid-2-hydroxyl propyl ester, 2(4H)-Benzofuranone-5,6,7,7a-tetrahydro-4,4,7a-trimethyl and many others. Antimicrobial screening was carried out on Escherichia coli, Staphylococcus aureus and Aspergillus niger using the agar well diffusion technique. The result shows that the extract exhibit antimicrobial activity with zones of inhibition in diameter. These results show that the plant exhibit antimicrobial activity and possess pharmacological characteristics, which could be applied in the production of potent drugs.
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Gudmestad, Neil C., Paul J. Henningson, and William M. Bugbee. "Cellular fatty acid comparison of strains of Corynebacterium michiganense subsp. sepedonicum from potato and sugar beet." Canadian Journal of Microbiology 34, no. 6 (June 1, 1988): 716–22. http://dx.doi.org/10.1139/m88-122.

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The cellular fatty acid composition of Corynebacterium michiganense subsp. sepedonicum strains recovered from potato and sugar beet hosts were determined using gas-liquid chromatography. Fatty acid profiles were compared to profiles from other plant pathogenic coryneform bacteria. The most prevalent fatty acids present in C. michiganense subsp. sepedonicum were 12-methyl-tetradecanoic acid (a15:0), 14-methyl-hexadecanoic acid (a17:0), 14-methyl-pentadecanoic acid (i16:0), 12-methyl-4-tetradecenoic acid (a15:1), hexadecanoic acid (16:0), cis-9-octadecenoic acid (18:1c), and cis-9,12-octadecadienoic acid (18:2). In addition, some strains contained smaller amounts of 14, 15, 16, 17, 18, and 19 carbon fatty acids. All strains of plant pathogenic coryneform bacteria tested could be differentiated on the basis of either total fatty acid content (qualitative) or by ratios of cellular fatty acids (relative quantitative differences), e.g., a15:0/i16:0, a17:0/i16:0, a15:0/a17:0, i16:0/a15:1, a15:1/16:0, and 16:0/18:1. Strains of C. michiganense subsp. sepedonicum from sugar beet and potato were qualitatively and quantitatively very similar. On the basis of these results, it was clear that the endophytic strains of C.m. subsp. sepedonicum recovered from healthy sugar beets were indistinguishable from pathogenic strains recovered from potato. The bacteria from the two hosts should be considered as members of the same subspecies.
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F. H. Ferdosi, Malik, Iqra Haider Khan, Arshad Javaid, Hafiz M. Saeed, Ifrayeem Butt, and Ayesha Munir. "GC-MS ANALYSIS PROFILE AND BIOACTIVE COMPONENTS OF FLOWERS OF Bergenia ciliata, A WEED OF ROCK CREVICES." JOURNAL OF WEED SCIENCE RESEARCH 27, no. 4 (December 31, 2021): 527–35. http://dx.doi.org/10.28941/pjwsr.v27i4.1012.

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Bergenia ciliata is a weed of hilly areas of Pakistan that generally grows in rock crevices. In the present study, flowers of this weeds were collected from Murree. The dried flowers were extracted in methanol and subjected to GC-MS analysis that showed 7 compounds in it. The predominant compound was hexanedioic acid, bis(2-ethylhexyl) ester (48.88%) followed by γ-sitosterol (22.56%). Moderately occurring compound was cyclohexane, 1,3,5-triphenyl- (12.87%). The remaining compounds namely n-hexadecanoic acid (4.97%), pentadecanoic acid, 14-methyl-, methyl ester (3.77%), 9,12-octadecadienoic acid, methyl ester, (Z,Z)- (2.94%) and 9,12,15-octadecatrienoic acid, methyl ester, (Z,Z,Z)- (2.92%) were categorized as less abundant compounds. Literature survey indicated that these compounds possess antimicrobial, larvicidal, anti-inflammatory, anticancer and/or antidiabetic properties.
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Callaghan, Amy V., Meghan Tierney, Craig D. Phelps, and L. Y. Young. "Anaerobic Biodegradation of n-Hexadecane by a Nitrate-Reducing Consortium." Applied and Environmental Microbiology 75, no. 5 (December 29, 2008): 1339–44. http://dx.doi.org/10.1128/aem.02491-08.

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ABSTRACT Nitrate-reducing enrichments, amended with n-hexadecane, were established with petroleum-contaminated sediment from Onondaga Lake. Cultures were serially diluted to yield a sediment-free consortium. Clone libraries and denaturing gradient gel electrophoresis analysis of 16S rRNA gene community PCR products indicated the presence of uncultured alpha- and betaproteobacteria similar to those detected in contaminated, denitrifying environments. Cultures were incubated with H34-hexadecane, fully deuterated hexadecane (d 34-hexadecane), or H34-hexadecane and NaH13CO3. Gas chromatography-mass spectrometry analysis of silylated metabolites resulted in the identification of [H29]pentadecanoic acid, [H25]tridecanoic acid, [1-13C]pentadecanoic acid, [3-13C]heptadecanoic acid, [3-13C]10-methylheptadecanoic acid, and d 27-pentadecanoic, d 25-, and d 2 4-tridecanoic acids. The identification of these metabolites suggests a carbon addition at the C-3 position of hexadecane, with subsequent β-oxidation and transformation reactions (chain elongation and C-10 methylation) that predominantly produce fatty acids with odd numbers of carbons. Mineralization of [1-14C]hexadecane was demonstrated based on the recovery of 14CO2 in active cultures.
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Bisignano, Carlo, Giovanna Ginestra, Antonella Smeriglio, Erminia La Camera, Giuseppe Crisafi, Flavio Franchina, Peter Tranchida, et al. "Study of the Lipid Profile of ATCC and Clinical Strains of Staphylococcus aureus in Relation to Their Antibiotic Resistance." Molecules 24, no. 7 (April 2, 2019): 1276. http://dx.doi.org/10.3390/molecules24071276.

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A number of reports have indicated a relationship between bacterial resistance to antibiotics and their lipid composition. In the present study, we characterized the lipid profiles of American Type Culture Collection (ATCC) and clinical strains of Staphylococcus aureus and its correlation with antibiotic resistance and hydrophobicity. The following strains were used: S. aureus ATCC 6538P, S. aureus ATCC 43300 (MRSA), seven clinical strains from the pharynges, two strains from duodenal ulcers, four strains from hip prostheses, and one strain from the conjunctiva. Lipid-related differentiation was observed across the S. aureus strains: the higher abundance of anteiso-pentadecanoic acid (anteiso-C15:0) and anteiso-heptadecanoic acid (anteiso-C17:0), followed by iso-pentadecanoic acid (iso-C15:0), suggested that these were common lipids. Iso-tridecanoic acid (iso-C13:0) and anteiso-tridecanoic acid (anteiso-C13:0), iso-hexadecanoic acid (iso-C16:0) and anteiso-hexadecanoic acid (anteiso-C16:0), and all forms of octadecanoic acid (C18:0) were usually detected in low abundance. Strains isolated from pharynges showed the highest ratio of branched/straight chains. A distinction in two clusters based on the amount and type of bacterial lipids identified was obtained, which correlated to the antibiotic resistance, the strains origin, and the cell-surface hydrophobicity. We report a potential correlation between the lipid profile of S. aureus strains, site of infection, antibiotic resistance, and cell-surface hydrophobicity. These results, which still need further insights, could be a first step to identifying antibiotic resistance in response to environmental adaptation.
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Shad, Nadeem, Arshad Javaid, and Qudsia Kanwal. "ANTIFUNGAL AND OTHER BIOACTIVE CONSTITUENTS IN ROOTS OF A HALOPHYTIC WEED Suaeda fruticosa." JOURNAL OF WEED SCIENCE RESEARCH 28, no. 3 (September 30, 2022): 311–18. http://dx.doi.org/10.28941/pjwsr.v28i3.1072.

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Suaeda fruticosa Forssk. ex J. F. Gmelin is a halophytic weed of family Amaranthaceae (previously in Chenopodiaceae) that covers vast stretches of salty alluvial flats on drier sites and coastal belts in Pakistan. In this study, mature plants of S. fruticosa were collected from district D.G. Khan during May 2021. After shade drying, the roots were crushed thoroughly and 5 g material was soaked in methanol for 2 weeks. After filtration, GC-MS analysis of the extract was done that showed presence of 14 compounds in the extract. Major compounds in the root were n-hexadecanoic acid (16.70%), oleic acid (16.39%), dodecanoic acid (15.68%) and dihydroxymaleic acid (15.58%). Other compounds were erythritol (6.31%), 10-octadecenoic acid, methyl ester (6.01%), tetradecanoic acid (4.78%), 1,2-ethanediamine, N-ethyl-N'-methyl- (3.46%), pentadecanoic acid, 14-methyl-, methyl ester (3.66%), 8,11-octadecadienoic acid, methyl ester (2.85%), 2,4,6-cycloheptatrien-1-one, 3,5-bis-trimethylsilyl (2.44%), 2-oxo-3-methyl-cis-perhydro-1,3-benzoxazine (2.24%), cyclotrisiloxane, hexamethyl- (2.13%), and 1-hexadecanol (1.73%). Compounds present in roots of S. fruticosa are known to possess antifungal, antibacterial, nematicidal, antimicrobial, anticancer, antidiabetic, anti-inflammatory, and antioxidant properties.
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Prasad, P. B. V. "Deformation Phenomena in n-Pentadecanoic Acid Crystals." Crystal Research and Technology 26, no. 4 (1991): 501–9. http://dx.doi.org/10.1002/crat.2170260425.

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8

Lin, Yi-Chueh, and Akira Yokota. "Plantibacter auratus sp. nov., in the family Microbacteriaceae." International Journal of Systematic and Evolutionary Microbiology 56, no. 10 (October 1, 2006): 2337–39. http://dx.doi.org/10.1099/ijs.0.64366-0.

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Strain NCIMB 9991T is a Gram-positive, short rod-shaped, yellow-pigmented bacterium, with a high DNA G+C content, and was originally deposited in 1967 as Arthrobacter sp. The bacterium is aerobic, non-motile, catalase-positive and oxidase-negative. Comparative 16S rRNA gene sequencing studies demonstrated that this strain was highly related genealogically to Plantibacter flavus DSM 14012T. Strain IAM 14817T (=NCIMB 9991T) has the following characteristics: the predominant menaquinones are MK-9 and MK-10, the DNA G+C content is 68 mol%, the diamino acid in the cell wall is 2,4-l-diaminobutyric acid and the muramic acid in the peptidoglycan is of an acetyl type. The major fatty acid is 12-methyl tetradecanoic acid (anteiso-C15 : 0), followed by 14-methyl hexadecanoic acid (anteiso-C17 : 0), 14-methyl pentadecanoic acid (iso-C16 : 0) and hexadecanoic acid (C16 : 0). On the basis of morphological, physiological and chemotaxonomic characteristics, together with DNA–DNA hybridization and 16S rRNA gene sequence comparison, strain IAM 14817T represents a novel species within the genus Plantibacter, for which the name Plantibacter auratus sp. nov. is proposed, with the type strain IAM 14817T (=NCIMB 9991T=NBRC 15702T).
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Hanafiah, Rohazila. "Antibacterial Activity of Bioactive Compound in Salvadora persica (Chewing Stick) Against Porphyromonas gingivalis and Aggregatibacter actinomycetemcomitans." ASM Science Journal 17 (May 27, 2022): 1–8. http://dx.doi.org/10.32802/asmscj.2022.1101.

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This study aims to determine the phytochemical properties of Salvadora persica extracts and their antibacterial activities against Gram-negative oral anaerobes which are responsible of periodontitis such as Porphorymonas gingivalis and Aggregatibacter actinomycetemcomitans. Aqueous and ethanolic extracts were prepared using the root powdered stem of S. persica. The phytochemical compounds were determined with Liquid Chromatography-Mass Spectrometry (LC-MS) and Gas Chromatography-Mass Spectrometry (GC-MS). The antibacterial activities were assessed according to the levels of minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC). The S. persica ethanolic and aqueous extracts contained antibacterial compounds such as Octadecenoic acid, methyl ester, n-Hexadecanoic acid and Pentadecanoic acid, 2,6,10,14-tetramethyl-, methylester, 1-(2,2-Dimethylpropanoyl)-L-prolyl-L-prolyl-N,2-dimethylalaninamide and 2-({4-[(Difluoromethyl)sulfanyl]phenyl} amino) benzoic acid, respectively. Both P. gingivalis (0.025 mg/mL) and A. actinomycetemcomitans (0.125 mg/mL) were susceptible to S. persica ethanolic extract. Ethanolic extract preparation has equal antibacterial activity with 0.2% chlorhexidine gluconate solution (p<0.05). Ethanolic extract (0.025-0.125 mg/mL) preparation has comparable require biocompatible testing.
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Odiase-Omoighe, J. O., and B. O. Agoreyo. "Identification of Bioactive Compounds in Sclerotia Extracts from Pleurotus tuber-regium (Fr.) Sing. using Gas Chromatograph– Mass Spectrometer (GC-MS)." Nigerian Journal of Biotechnology 38, no. 1 (June 6, 2022): 39–50. http://dx.doi.org/10.4314/njb.v38i1.4s.

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King tuber mushroom (Pleurotus tuber-regium) is a tropical mushroom commonly seen in Australia, Africa and Asia. Trado-medical practitioners use the sclerotia for the treatment of various health disorders. This research aimed at identifying the biologically active compounds present in the sclerotia of this mushroom. In this study, the fungus was first extracted with methanol and re-extracted with ethyl acetate (EA) and dichloromethane (DCM) separately to obtain EA and DCM extracts. Gas chromatography–mass spectrometric (GC-MS) technique was used for the identification of compounds present in EA and DCM extracts. Results revealed the presence of a total of at least twenty-six (26) compounds with 14 and 12 from EA and DCM extracts respectively. The bioactives include n-Hexadecanoic acid, Oleic acid, 10-Octadecenal, Palmitoleic acid, 9, 17-octadecadienal-(z), 11-octadecenoic and methyl ester-(z). In EA extract, n-Hexadecanoic acid had highest concentration (37.67%) followed by 20.65% of 9,12 Octadecadienoic acid and the least was 9,17 Octadecadienal with 0.539%. In DCM extract, 11-Octadecenoic acid methyl ester was most abundant (18.344%) followed by Pentadecanoic acid 14 methyl-methyl ester (14.105%) and the least (4.058%) was 9,12-Octadecadienoic acid. These compounds possess various reported medicinal properties (such as the treatment of high blood pressure, diabetes, asthma, fever and cancer) that could be harnessed for health benefits. Other identified compounds with unknown functions are Trans-2-Dodecen-1-ol trifluoroacetate, cis-11-Hexadecenal, Methyl-18-methylnonadecanoate and Methyl-18-methyl-tetracosanoate. This identification is useful for the establishment of the medicinal properties of the mushroom and isolation of the bioactive compounds, which production can further be enhanced by cost-effective biotechnology techniques.
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Book chapters on the topic "Pentadecanoic acid and n-hexadecanoic acid"

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Rondelez, F., J. F. Baret, K. A. Suresh, and C. M. Knobler. "Structural Studies in Langmuir Monolayers by Fluorescence Microscopy: A New Approach to the Phase Diagram of N-Pentadecanoic Acid at the Air-Water Interface." In NATO ASI Series, 857–80. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4613-0707-5_62.

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