Metode penelitian adalah deskriptif yang bertujuan untuk mengetahui profil gliserida dan identifikasi komposisi asam lemak pada minyak ikan patin. Minyak patin diperoleh menggunakan proses rendering kering (dry rendering). Analisis dengan kromatografi gas (GC) sebelumnya diesterifikasi BF3. Total jenuh sebesar 49,344%, total tak 54,524% terdiri dari MUFA 39,101% PUFA 15,423%. Ditemukan omega 3...

Glycols and ethoxy– propoxy–alcohols are fundamental chemicals in industry, with annual productions of millions tons, still manufactured many cases corrosive unrecoverable catalysts such as KOH, amines BF3•OEt2. Here we show that commercially available, inexpensive, non–toxic, solid recyclable nanotitania catalyzes the hydration alkoxylation epoxides, water primary secondary alcohols but not ph...

Catalytic hydrogenation of dibenzyl 5-dipyrroketone-2,9-dicarboxylates followed by decarboxylative iodination affords a 2,9-diiododipyrroketone which gives a 2,5,9-trichlorodipyrromethene hydrochloride after nucleophilic addition/elimination, with adventitious chloride to replace the two iodide groups. Treatment with BF3·Et2O gives a 3,5,8-trichloro-BODIPY that readily undergoes regioselective ...

In this assay for oxalate in urine, oxalate is adsorbed from the urine onto graphitized carbon black (Carbopack B). After desorption and removal of the solvent, oxalic acid is gas-chromatographically measured after being derivatized with BF3/methanol. Chromatography is on Carbopack B/polyethylene glycol (Mr 20000), 93.7/6.3 by weight. The lower limit of detection of urinary oxalate is about 3 m...

Utilization of Photodisintegration reaction of Deuterium, H(γ,n)H, is a precise technique for determining the percentage of H in tritiated and natural water. The Na(n,γ)Na reaction is a suitable γ-source for producing the H(γ,n)H reaction. Tehran Research Reactor was used as a neutron source for producing Na isotopes. The BF3 detectors were used to detect the neutron emission of H2 content of w...

Improved synthesis of 3b-acetoxy-9, 10-seco-19, 8(8)-spiro-5(10), 6-cholestadiene has been reported after reacting cholecalciferol acetate with dimethylbutadiene by incorporating BF3·OEt2, SnCl4, ZnBr2, p-TsOH in toluene under Diels-Alder condition to get better yields. Agarose gel electrophoresis showed the potential in vitro DNA damaging nature while as the comet assay depicted the genotoxic ...

Boron complexes of calix[4]phyrins (1.1.1.1) were prepared by reacting the free-base ligands with BF3·Et2O. The reaction conditions can be efficiently tailored to produce mono- or di-boron calixphyrins. Mono-BF2 calixphyrins with boron coordinating to either the dipyrrin, BF2[H(Calix)], or dipyrromethane, BF2[H(Calix)] and BF2[H2(Calix)]+, bonding sites were isolated. The dipyrromethane isomer,...

Glycerolipids and sphingolipids are hydrolyzed with 0.5 M HCl in acetonitrile-water 9:1 (by vol) for 45 min at 100 degrees C or 4 hr at 70 degrees C. After hydrolysis, free fatty acids (FFA) are recovered in chloroform and separated by thin-layer chromatography. More than 95% of the radioactivity from labeled phospholipids is recovered as FFA, and more than 97% of the lipid phosphorus is recove...

Amino acid transporters (AATs) are a series of integral channels for uphill cellular uptake of nutrients and neurotransmitters. Abnormal expression of AATs is often associated with cancer, addiction, and multiple mental diseases. Although methods to evaluate in vivo expression of AATs would be highly useful, efforts to develop them have been hampered by a lack of appropriate tracers. We describ...