Results 21 to 30 of about 34,315 (270)

A New Method for the Determination of Nucleic Acid Using an Eu3+– nicotinic Acid Complex as a Resonance Light Scattering Probe

Molecules, 2008
This study found that in Tris-HCl buffer, the resonance light scattering (RLS) intensity of the Eu3+-nicotinic acid system can be greatly enhanced by nucleic acids and the enhanced intensity is proportional to the concentration of nucleic acid in the ...
Jing-He Yang, Wei Xu, Xia Wu, Lin-Tong Wang, Meng Guo   +4 more
doaj   +1 more source

Effects of solvent and structure on the reactivity of 6-substituted nicotinic acids with diazodiphenylmethane in aprotic solvents [PDF]

Journal of the Serbian Chemical Society, 2009
The rate constants for the reactions of diazodiphenylmethane (DDM) with 6-substituted nicotinic acids in aprotic solvents at 30°C were determined. The obtained second order rate constants in aprotic solvents, together with literature data for benzoic and
Drmanić Saša Ž., Marinković Aleksandar D., Jovanović Bratislav Ž.   +2 more
doaj   +3 more sources

Studying the influence of functional ingredients on the vitamin composition of immunostimulating pastille of marmalade products

Алматы технологиялық университетінің хабаршысы, 2022
The study of functional ingredients to change the composition of water-soluble vitamins in the developed pastille of marmalade products was studied.
Yu. G. Pronina, Zh. S. Nabiyeva, О. D. Belozertseva, A. I. Samadun   +3 more
doaj   +1 more source

EFFECTS OF LUDARTIN AND LEUKOMISIN ON THE ACUTE HYPERLIPIDEMIA MODEL INDUCED BY ETHANOL

Бюллетень сибирской медицины, 2015
Objective: study sesquiterpene lactones ludartin and leukomisin lipid-lowering properties on the model of acute hyperlipidemia induced by ethanol in rats.Material and methods. Rats during 7 days injected into the stomach ludartin and leukomisin in a dose
A. V. Ratkin, O. A. Kaidash, V. V. Ivanov, A. I. Vengerovsky, S. M. Adekenov, V. S. Chuchalin   +5 more
doaj   +1 more source

Effects of solvent and structure on the reactivity of 2-substituted nicotinic acids with diazodiphenylmethane in aprotic solvents [PDF]

Journal of the Serbian Chemical Society, 2012
The rate constants for the reactions of diazodiphenylmethane (DDM) with 2-substituted nicotinic acids in nine aprotic solvents at 30°C were determined. The obtained second order rate constants in aprotic solvents, were correlated using the Kamlet-Taft
Drmanić Saša Ž., Nikolić Jasmina B., Jovanović Bratislav Ž.   +2 more
doaj   +1 more source

Profiling of the Contents of Amino Acids, Water-Soluble Vitamins, Minerals, Sugars and Organic Acids in Turkish Hazelnut Varieties

Polish Journal of Food and Nutrition Sciences, 2018
Proximate composition, profiles of amino acids, sugars, organic acids, vitamins and minerals of fourteen Turkish hazelnut varieties harvested in 2013 and 2014 were investigated.
Taş Neslihan Göncüoğlu, Gökmen Vural   +1 more
doaj   +1 more source

Metodologia para análise simultânea de ácido nicotínico, trigonelina, ácido clorogênico e cafeína em café torrado por cromatografia líquida de alta eficiência

Química Nova, 2006
A reverse phase liquid chromatography method was developed for simultaneous determination of trigonelline, caffeine, nicotinic and chlorogenic (5-CQA) acids in roasted coffee.
Sandriel Trindade Alves, Rafael Carlos Eloy Dias, Marta de Toledo Benassi, Maria Brígida dos Santos Scholz   +3 more
doaj   +1 more source

Copper Complexes of Nicotinic-Aromatic Carboxylic Acids as Superoxide Dismutase Mimetics

Molecules, 2008
Nicotinic acid (also known as vitamin B3) is a dietary element essential for physiological and antihyperlipidemic functions. This study reports the synthesis of novel mixed ligand complexes of copper with nicotinic and other select carboxylic acids ...
Virapong Prachayasittikul, Chanin Nantasenamat, Chartchalerm Isarankura-Na-Ayudhya, Theeraphon Piacham, Supaluk Prachayasittikul, Thummaruk Suksrichavalit   +5 more
doaj   +1 more source

Influence of Altitude on Caffeine, 5-Caffeoylquinic Acid, and Nicotinic Acid Contents of Arabica Coffee Varieties

Journal of Chemistry, 2020
The influence of altitude on caffeine, 5-caffeoylquinic acid (5-CQA), and nicotinic acid contents of Arabica coffee varieties grown in Southwest Ethiopia was investigated.
Bealu Girma, Abera Gure, Feyisa Wedajo
doaj   +1 more source

Comprehensive Analysis of Metabolites in Brews Prepared from Naturally and Technologically Treated Coffee Beans

Antioxidants, 2022
Coffee is one of the most popular beverages in the world. Therefore, this study analyzed 49 coffee samples of Arabica and Robusta species of different geographical origins and the treatment of beans including three degrees of roasting with the use of LC ...
Magdalena Jeszka-Skowron, Robert Frankowski, Agnieszka Zgoła-Grześkowiak, Julia Płatkiewicz   +3 more
doaj   +1 more source