scholarly journals Biological activity in soils treated with green manures of Lupinus spp. (Leguminosae) using the hydrolysis of fluorescein diacetate method (FDA) in Jalisco, Mexico

2020 ◽  
Vol 4 (5) ◽  
pp. 203-206
Author(s):  
Isidro Zapata Hernández ◽  
Juan Francisco Zamora Natera ◽  
Pedro Macedonio García López ◽  
Eustacio Ramírez Fuentes ◽  
Ma Nieves Trujillo Tapia
Keyword(s):  
Biological Activity ◽  
Fluorescein Diacetate ◽  
Green Manures ◽  
Hydrolysis Of

A FACILE SYNTHESIS AND REACTIONS OF AMINO SELENOLO[2,3-b]PYRIDINE CARBOXYLATE

2015 ◽  
Vol 12 (1) ◽  
pp. 3910-3918 ◽  
Author(s):  
Dr Remon M Zaki ◽  
Prof Adel M. Kamal El-Dean ◽  
Dr Nermin A Marzouk ◽  
Prof Jehan A Micky ◽  
Mrs Rasha H Ahmed
Keyword(s):  
Biological Activity ◽  
Carbonyl Compounds ◽  
Mass Spectra ◽  
The Other ◽  
Pyridine Derivatives ◽  
Facile Synthesis ◽  
High Biological Activity ◽  
Basic Hydrolysis ◽  
Pyridine Carboxylate ◽  
Hydrolysis Of

 Incorporating selenium metal bonded to the pyridine nucleus was achieved by the reaction of selenium metal with 2-chloropyridine carbonitrile 1 in the presence of sodium borohydride as reducing agent. The resulting non isolated selanyl sodium salt was subjected to react with various α-halogenated carbonyl compounds to afford the selenyl pyridine derivatives 3a-f  which compounds 3a-d underwent Thorpe-Ziegler cyclization to give 1-amino-2-substitutedselenolo[2,3-b]pyridine compounds 4a-d, while the other compounds 3e,f failed to be cyclized. Basic hydrolysis of amino selenolo[2,3-b]pyridine carboxylate 4a followed by decarboxylation furnished the corresponding amino selenolopyridine compound 6 which was used as a versatile precursor for synthesis of other heterocyclic compound 7-16. All the newly synthesized compounds were established by elemental and spectral analysis (IR, 1H NMR) in addition to mass spectra for some of them hoping these compounds afforded high biological activity.

scholarly journals Isothermal and non-isothermal kinetics of hydrolysis of 1-[2-(2- pentyloxyphenylcarbamoyloxy)-(2-methoxymethyl)-ethyl]- perhydroazepinium chloride (BK 129)

2013 ◽  
Vol 60 (2) ◽  
pp. 43-48
Author(s):  
Stankovičová M. ◽  
Bezáková Ž. ◽  
Beňo P. ◽  
Húšťavová P.
Keyword(s):  
Biological Activity ◽  
Alkaline Hydrolysis ◽  
Functional Group ◽  
Isothermal Kinetics ◽  
Basic Part ◽  
Buffer Solutions ◽  
Kinetics Of Hydrolysis ◽  
Short Time ◽  
Kinetics Of ◽  
Hydrolysis Of

Abstract The substance BK 129 - 1-[2-(2-pentyloxyphenylcarbamoyloxy)-(2-methoxymethyl)-ethyl]-perhydroazepinium chloride was prepared in terms of influence of the connecting chain between the carbamate functional group and the basic part of molecule on biological activity. Such a structural feature is important with regard to its stability. In this work we determined the rate constants of alkaline hydrolysis of this compound at increased temperature under isothermal and non-isothermal conditions. The hydrolysis was also performed in buffer solutions with the purpose of evaluating its stability. Non-isothermal tests of stability enable to reduce the number of analyses. The necessary data for stability of compound are in this way achieved in a short time.

Sialic Acid Content And The Biological Activity Of Stuart Factor (F X)

1981 ◽  
Author(s):  
A M Engel
Keyword(s):  
Biological Activity ◽  
Sialic Acid ◽  
Sodium Citrate ◽  
Complete Removal ◽  
Maximal Activity ◽  
Disc Electrophoresis ◽  
Sialic Acid Content ◽  
Activation System ◽  
Hydrolysis Of ◽  
Esterase Activities

Substantial release of sialic acid (SA) from purified F X was obtained with sialidase from Clostridium perfringens. The total SA content of F X was found to be 1.7%, in agreement with previous reports. After almost complete removal of SA, aliquots were examined by polyacrilamide disc electrophoresis and by polyacrilamide in sodium dodecy1 sulphate (SDS) and the gels were stained for proteins and for glycoproteins. When SA was progressively removed from F X its clotting activity was slightly increased while its electrophoretic mobility was retarded, as expected. The tryptic activation of F X was affected by the removal of 60-70% of SA, yielding more clotting activity than the native F X. No difference was observed between the esterase activity of regular F X and asialo-X as measured by the hydrolysis of N-alpha-acetyl glycyl-L-lysy1-methyl ester acetate (AGLMe).When asialo-X was interacted with 25% sodium citrate the kinetics were accelerated and the maximal clotting and esterase activities were obtained at 6 hours of activation while the native F X reached the peack of both activities at 24 hours. Both activation mixtures were analyzed, at the period of maximal activity, for liberation of peptidic material by thin-layer electrophoresis (TLE). TLE patterns of asialo-X varied according to the activation system used; they also differed from the ones obtained with native F X.The data indicate that SA influences the kinetic of activation of F X and the nature and distribution of the peptidic material released during activation.

GROWTH HORMONE ACTIVITY IN MAN OF CHYMOTRYPTIC DIGESTS OF BOVINE GROWTH HORMONE

1969 ◽  
Vol 44 (2) ◽  
pp. 255-265 ◽  
Author(s):  
M. SONENBERG ◽  
J. M. DELLACHA ◽  
C. A. FREE ◽  
A. C. NADLER
Keyword(s):  
Diabetes Mellitus ◽  
Growth Hormone ◽  
Biological Activity ◽  
Insulin Response ◽  
Complete Loss ◽  
Bovine Growth Hormone ◽  
Hormone Activity ◽  
Disk Electrophoresis ◽  
Hydrolysis Of ◽  
Electrophoretic Component

SUMMARY Bovine growth hormone (BGH) digested with chymotrypsin showed a significant retention of biological activity after the hydrolysis of six bonds and the formation of 20% non-precipitable nitrogen. Disk electrophoresis of ½ and 3 hr. digests demonstrated complete loss of the major electrophoretic component of BGH with the appearance of one or more components of greater anodal mobility. Administration of the chymotryptic digests of BGH to three hypopituitary patients resulted in an anti-insulin response, aggravation of diabetes mellitus or anabolic effects.

Kinetics of the acid hydrolysis of heparin from its Cu (II) complex and its relation to biological activity

Biopolymers ◽  
1973 ◽  
Vol 12 (5) ◽  
pp. 947-959 ◽  
Author(s):  
Salvatore S. Stivala ◽  
Slawko Yadlowsky ◽  
Leon Yuan
Keyword(s):  
Biological Activity ◽  
Acid Hydrolysis ◽  
Kinetics Of ◽  
Hydrolysis Of

Recent Advances on Triazolium Ionic Liquids: Synthesis and Applications

2019 ◽  
Vol 23 (11) ◽  
pp. 1239-1255 ◽  
Author(s):  
Roli Mishra ◽  
Jyoti S. Mishra ◽  
Snehkrishn A. Chaubey
Keyword(s):  
Ionic Liquid ◽  
Biological Activity ◽  
Major Part ◽  
Dye Sensitized Solar Cell ◽  
Storage Devices ◽  
Dye Sensitized ◽  
Potential Applications ◽  
Electrochemical Storage ◽  
Ion Conducting ◽  
Hydrolysis Of

The present review is principally focused on the triazolium ILs (TILs) and its potential applications. The major part of this review deals with the use of triazolium ILs as catalysts in asymmetric synthesis, solvents, recognition abilities, and electrolytes in electrochemical, storage devices. Influences of stereochemistry in ion conducting properties, hydrolysis of sugar baggage, Dye-Sensitized Solar Cell (DSSC) and biological activity are also discussed. Our intention in this review is to make concise compilation and investigations of the latest key achievements, broad spectrum of developments and problems within triazolium ionic-liquid. We anticipate that this communication will encourage scientific researchers and industries to exploit triazolium ILs in addressing scientific accost.

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