Tridecanoic Acid

2021 ◽  
Keyword(s):  
Tridecanoic Acid

scholarly journals The elongation of very long-chain fatty acid 6 gene product catalyses elongation of n-13 : 0 and n-15 : 0 odd-chain SFA in human cells

2019 ◽  
Vol 121 (3) ◽  
pp. 241-248 ◽  
Author(s):  
Zhen Wang ◽  
Dong Hao Wang ◽  
Yuliya Goykhman ◽  
Yuanyuan Yan ◽  
Peter Lawrence ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Food Intake ◽  
Dairy Products ◽  
Chain Fatty Acid ◽  
Molecular Evidence ◽  
Mcf7 Cells ◽  
Long Chain Fatty Acid ◽  
Tridecanoic Acid ◽  
Long Chain ◽  
Specific Food

AbstractNormal odd-chain SFA (OCSFA), particularly tridecanoic acid (n-13 : 0), pentadecanoic acid (n-15 : 0) and heptadecanoic acid (n-17 : 0), are normal components of dairy products, beef and seafood. The ratio of n-15 : 0:n-17 : 0 in ruminant foods (dairy products and beef) is 2:1, while in seafood and human tissues it is 1:2, and their appearance in plasma is often used as a marker for ruminant fat intake. Human elongases encoded by elongation of very long-chain fatty acid (ELOVL)1, ELOVL3, ELOVL6 and ELOVL7 catalyse biosynthesis of the dominant even-chain SFA; however, there are no reports of elongase function on OCSFA. ELOVL transfected MCF7 cells were treated with n-13 : 0, n-15 : 0 or n-17 : 0 (80 µm) and products analysed. ELOVL6 catalysed elongation of n-13 : 0→n-15 : 0 and n-15 : 0→n-17 : 0; and ELOVL7 had modest activity toward n-15 : 0 (n-15 : 0→n-17 : 0). No elongation activity was detected for n-17 : 0→n-19 : 0. Our data expand ELOVL specificity to OCSFA, providing the first molecular evidence demonstrating ELOVL6 as the major elongase acting on OCSFA n-13 : 0 and n-15 : 0 fatty acids. Studies of food intake relying on OCSFA as a biomarker should consider endogenous human metabolism when relying on OCSFA ratios to indicate specific food intake.

scholarly journals Anaerobic Biodegradation of n-Hexadecane by a Nitrate-Reducing Consortium

2008 ◽  
Vol 75 (5) ◽  
pp. 1339-1344 ◽  
Author(s):  
Amy V. Callaghan ◽  
Meghan Tierney ◽  
Craig D. Phelps ◽  
L. Y. Young
Keyword(s):  
Denaturing Gradient Gel Electrophoresis ◽  
Mass Spectrometry Analysis ◽  
Chain Elongation ◽  
Gas Chromatography Mass Spectrometry ◽  
Rrna Gene ◽  
Pentadecanoic Acid ◽  
Spectrometry Analysis ◽  
Tridecanoic Acid ◽  
Pcr Products ◽  
Gradient Gel Electrophoresis

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.

Lead(II) Di-n-tridecanoate +n-Tridecanoic Acid Phase Diagram:  A Surfactant−Solvent-like Behavior

Langmuir ◽  
1996 ◽  
Vol 12 (10) ◽  
pp. 2367-2370 ◽  
Author(s):  
M. V. Roux ◽  
C. Turrión ◽  
A. Sánchez Arenas ◽  
J. A. R. Cheda
Keyword(s):  
Phase Diagram ◽  
Tridecanoic Acid

scholarly journals Potensi Ekstrak Daun Dewandaru (Eugenia uniflora L.) Sebagai Pengendali Bakteri Bacillus cereus ATCC 11778 Penyebab Diare

2020 ◽  
Vol 7 (1) ◽  
pp. 123
Author(s):  
Putu Cindy Arista ◽  
Retno Kawuri ◽  
I.B. Gede Darmayasa
Keyword(s):  
Bacillus Cereus ◽  
Octadecenoic Acid ◽  
Dodecanoic Acid ◽  
Hexadecanoic Acid ◽  
Eugenia Uniflora ◽  
Tridecanoic Acid ◽  
Benzenedicarboxylic Acid

Eugenia uniflora L. merupakan tanaman obat yang dapat dimanfaatkan sebagai obat diare. Eksplorasi senyawa antibakteri dari bahan alam dapat mengatasi berbagai penyakit infeksi yang tidak menimbulkan efek resistensi yang berat seperti penggunaan antibiotika. Penelitian bertujuan mengetahui potensi ekstrak daun dewandaru sebagai pengendali bakteri Bacillus cereus ATCC 11778 penyebab diare dan mengetahui senyawa aktif yang terkandung dalam ekstrak daun dewandaru. Metode yang digunakan dalam penelitian adalah Rancangan Acak Lengkap (RAL) dengan 7 perlakuan konsentrasi ekstrak daun dewandaru yaitu 1%, 2%, 3%, 4%, 5% (b/v), kontrol positif (amoxicillin), dan kontrol negatif (etanol). Penentuan daya hambat ekstrak daun dewandaru terhadap B. cereus ATCC 11778 ditandai dengan terbentuknya daerah bening disekitar kertas cakram menggunakan metode Kirby Baurer. Penelitian menunjukkan bahwa pemberian ekstrak etanol daun dewandaru pada konsentrasi tertinggi (5%) mampu menghasilkan diameter zona hambat sebesar 7,15 mm terhadap B. cereus ATCC 11778. Hasil uji fitokimia menunjukkan ekstrak daun dewandaru mengandung senyawa tannin, saponin, terpenoid, dan flavonoid. Analisis GCMS terhadap fraksi aktif ekstrak daun dewandaru (Fraksi II) menghasilkan sepuluh senyawa yang bersifat antibakteri. Ekstrak etanol daun dewandaru mampu menghambat pertumbuhan B. cereus ATCC 11778 secara in vitro. Konsentrasi ekstrak daun dewandaru 1% merupakan konsentrasi minimal sebagai antibakteri B. cereus ATCC 11778. Terdapat 10 senyawa aktif sebagai antibakteri B. cereus ATCC 11778 yang terkandung dalam ekstrak daun dewandaru, diantaranya Dodecanoic acid, Tridecanoic acid, Hexadecanoic acid, Octadecanoid acid, 8-Nitro-11-dodecanolide, Oxiraneoctanoic acid, Oxiraneoctanoic acid, 9-Octadecenoic acid, 9-Octadecenoic acid, dan 1.2-Benzenedicarboxylic acid.   Kata kunci: Antibakteri, Zona hambat, Senyawa Aktif.

The role of Lathyrus sativus flower surface wax in short-range attraction and stimulant for nymph laying by an adult viviparous aphid

2019 ◽  
Vol 110 (2) ◽  
pp. 231-241 ◽  
Author(s):  
Paroma Mitra ◽  
Syed Husne Mobarak ◽  
Rahul Debnath ◽  
Anandamay Barik
Keyword(s):  
Fatty Acids ◽  
Linoleic Acid ◽  
Free Fatty Acids ◽  
Short Range ◽  
Lathyrus Sativus ◽  
Tridecanoic Acid ◽  
Surface Wax ◽  
Important Pest ◽  
Hexane Extracts ◽  
Synthetic Blend

AbstractAphis craccivora Koch (Hemiptera: Aphididae) is an important pest of Lathyrus sativus L. plants, and causes retarded plant growth and loss of seed production. The insect sucks cell sap from flowers and lays nymphs on flowers. Hence, an attempt has been made to observe whether flower surface wax compounds (alkanes and free fatty acids) from two cultivars (BIO L 212 Ratan and Nirmal B-1) of L. sativus could act as short-range attractant and stimulant for nymph laying by adult viviparous females. The n-hexane extracts of flower surface waxes were analyzed by TLC, GC-MS and GC-FID analyses. Twenty one and 22 n-alkanes between n-C12 and n-C36 were detected in BIO L 212 Ratan and Nirmal B-1, respectively; whereas 12 free fatty acids between C12:0 and C22:0 were identified in both cultivars. Pentadecane and tridecanoic acid were predominant n-alkane and free fatty acid, respectively. One flower equivalent surface wax of both cultivars served as short-range attractant and stimulant for nymph laying through Y-tube choice experiments and I-tube viviparity assays, respectively, by adult viviparous females. A synthetic blend of nonacosane, tridecanoic acid and linoleic acid, and a synthetic blend of tetradecane, pentadecane, nonacosane, tridecanoic acid and linoleic acid resembling in amounts as present in one flower equivalent surface wax of BIO L 212 Ratan and Nirmal B-1, respectively, served as short-range attractant and stimulant for nymph laying by adult viviparous females. This study suggests that both these blends could be used in lures in the development of baited traps in pest management programmes.

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