نتایج جستجو برای: pure compounds

تعداد نتایج: 316958  

Journal: :Poultry science 2002
M Du G Cherian P A Stitt D U Ahn

A total of 450 1-d-old male broiler chicks were fed a corn-soy-flax meal-based diet (control), two cultivars of sorghum--Ruby Red (low tannin content) and Valpo Red (high tannin content)--were used at 10% level. Birds were slaughtered at the end of 42-d feeding trial. Boneless, skinless breast and thigh muscles were separated and ground to make patties. Half of the breast and thigh meat patties...

In this paper, a genetic algorithm (GA) has been used to predict the vapor pressure of pure organic compounds based on Riedel equation. Initially, the coefficients of Riedel equation were optimized. Then, a new term was added to the original Riedel equation to reduce error of the model in prediction of vapor pressures of pure materials. 110 components at two different pressures (10 and 100 kPa)...

2014
Mojtaba S. Taleshi Rune K. Seidler-Egdal Kenneth B. Jensen Tanja Schwerdtle Kevin A. Francesconi

Arsenic-containing lipids (arsenolipids) are natural products present in fish and algae. Because these compounds occur in foods, there is considerable interest in their human toxicology. We report the synthesis and characterization of seven arsenic-containing lipids, including six natural products. The compounds comprise dimethylarsinyl groups attached to saturated long-chain hydrocarbons (thre...

Journal: Nanomedicine Journal 2017

Objective: In this study we would like to report the synthesis of pure and group I element doping of ZnO nanoparticles (ZnO-NPs) prepared using gelatin. The use of natural polymers for the preparation of the pure and doped nanoparticles can result in achieving low cost and eco-friendly advantages.Materials and Method: Pure and doped ZnO-NPs were obtained at 500 °C and The cytotoxicity of nanopa...

An efficient DNA isolation protocol specifically modified to get pure quality DNA required for molecular studieshas been reported in this paper. Some aquatic plants (Potamogeton spp., Ceratophyllum demersum and Myriophyllum spicatum) were used for the study. The protocol developed will be useful in getting high and pure DNA. Instead of using the available DNA extraction kits, this protocol can ...

Journal: :Archiv der Pharmazie 2013
Emre Menteşe Nesrin Karaali Fatih Yilmaz Serdar Ulker Bahittin Kahveci

A new series of 2-(4-(trifluoromethyl)phenyl)-1H-benzo[d]imidazole derivatives containing a 1,2,4-triazole ring were synthesized via microwave technique. This efficient procedure provides pure products within a few minutes. The newly synthesized compounds were confirmed by (1) H NMR and (13) C NMR spectra and they were screened for their lipase inhibition and antioxidant activities. Compounds 4...

2014
Michaela Novotná Radek Gažák David Biedermann Florent Di Meo Petr Marhol Marek Kuzma Lucie Bednárová Kateřina Fuksová Patrick Trouillas Vladimír Křen

Methods were developed and optimized for the preparation of the 2,3-cis- and the 10,11-cis-isomers of silybin by the Lewis acid catalyzed (BF3∙OEt2) isomerization of silybins A (1a) and B (1b) (trans-isomers). The absolute configuration of all optically pure compounds was determined by using NMR and comparing their electronic circular dichroism data with model compounds of known absolute config...

Journal: :Bioorganic & medicinal chemistry 2006
Nawal Serradji Okkacha Bensaid Marc Martin Wafa Sallem Nathalie Dereuddre-Bosquet Houcine Benmehdi Catherine Redeuilh Aazdine Lamouri Georges Dive Pascal Clayette Françoise Heymans

HIV-1 infection of the brain and PAF neurotoxicity are implicated in AIDS dementia complex. We previously reported that a trisubstituted piperazine derivative is able to diminish both HIV-1 replication in monocyte-derived macrophages and PAF-induced platelet aggregation. We report in this work new compounds obtained by modifying its piperazine substituents. The structure-activity relationship s...

Journal: :Journal of agricultural and food chemistry 2013
Nurhayat Tabanca Ulrich R Bernier Abbas Ali Mei Wang Betul Demirci Eugene K Blythe Shabana I Khan K Husnu Can Baser Ikhlas A Khan

As part of an ongoing research program to identify active mosquito repellents, Monarda bradburiana Beck and Monarda fistulosa L. essential oils showed good repellent activity with minimum effective dosages (MED) of 0.055 ± 0.036 and 0.078 ± 0.027 mg/cm(2), respectively, compared to reference standard N,N-diethyl-3-methylbenzamide (DEET) (0.039 ± 0.014 mg/cm(2)). Systematic bioassay-guided fract...

Journal: :Journal of AOAC International 2013

Determination of individual vitamin E components, such as D-αtocopherol, DL-α-tocopherol, and their esters, in food ingredients such as pre-blends, pre-mixes, and pure materials, including encapsulated and oil forms. Other compounds of accepted vitamin E activity may be measured by a method if the compounds and accuracy of measure can be ascertained. Methods should be capable of reporting α-toc...

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