Results 31 to 40 of about 1,918 (162)

Chromatography on Sephadex LH20 as an efficient purification step after removal of inter-nucleotide 2,2,2-trichloroethyl protective groups from oligoribonucleotide phosphotriesters¹

Nucleic Acids Research, 1980
Chromatography on Sephadex LH20, in a linear gradient of methanol in 0.02M TEAB buffer pH 7.5, is proposed as a fast and efficient method for the isolation and purification of protected oligoribonucleotide phosphodiesters obtained by deprotection of internucleotide phosphotriesters, and for the monitoring of the deprotection step itself. Its utility is
K. Grześcowiak, R.W. Adamiak, M. Wiewiórowski   +2 more
openaire   +2 more sources

Phytochemical investigations of three Rhodocodon (Hyacinthaceae Sensu APG II) species [PDF]

, 2017
The genus Rhodocodon (Hyacinthaceae sensu APG II) is endemic to Madagascar and its phytochemistry has not been described previously. The phytochemistry of three species in this genus has been investigated and eight compounds, including three ...
Alaa Alqahtani, Andrius Jaksevicius, Dagne E., Dulcie A. Mulholland, Elizabeth I. Opara, Jackie L. Andriantiana, Moses K. Langat, Pfosser M., Sianne Schwikkard, Tachibana M., Walter Knirsch, Wolfgang Wetschnig   +11 more
core   +2 more sources

Oleic Acid Produced by a Marine Vibrio spp. Acts as an Anti-Vibrio parahaemolyticus Agent

Marine Drugs, 2011
It is known that some strains of Vibrio parahaemolyticus are responsible for gastroenteric diseases caused by the ingestion of marine organisms contaminated with these bacterial strains. Organic products that show inhibitory activity on the growth of the
Carlos Riquelme, Mercedes Cueto, Ana R. Díaz-Marrero, José Darias, Yanett Leyton, Jorge Borquez   +5 more
doaj   +1 more source

Screening and Bioguided Fractionation of Mimosa pigra L. Bee Pollen with Antioxidant and Anti-Tyrosinase Activities

Journal of Apicultural Science, 2021
Bee pollen, one of the economic bee products, is widely known as a nutritional food with many bioactivities that depend on many such factors as bee species, plant source and biogeography.
Khongkarat Phanthiwa, Ramadhan Rico, Phuwapraisirisan Preecha, Chanchao Chanpen   +3 more
doaj   +1 more source

Iriflophenone-3-C-β-d Glucopyranoside from Dryopteris ramosa (Hope) C. Chr. with Promising Future as Natural Antibiotic for Gastrointestinal Tract Infections

Antibiotics, 2021
Ethnopharmacological approaches provide clues for the search of bioactive compounds. Dryopteris ramosa (Hope) C. Chr. (plant family: Dryopteridaceae) is an ethnomedicinal plant of the Galliyat region of Pakistan. The aqueous fraction (AqF) of D.
Muhammad Ishaque, Yamin Bibi, Samha Al Ayoubi, Saadia Masood, Sobia Nisa, Abdul Qayyum   +5 more
doaj   +1 more source

Double strand DNA cleavage with a binuclear iron complex [PDF]

, 2007
Covalently linking two single strand DNA cleaving agents resulted in a new biomimetic binuclear iron complex capable of effecting oxidative double strand DNA cleavage.
Berg, Tieme A. van den,, Feringa, Ben L.,, Roelfes, Gerard,   +2 more
core   +1 more source

Dihydroisocoumarins, Naphthalenes, and Further Polyketides from Aloe vera and A. plicatilis: Isolation, Identification and Their 5-LOX/COX-1 Inhibiting Potency

Molecules, 2021
The present study aims at the isolation and identification of diverse phenolic polyketides from Aloe vera (L.) Burm.f. and Aloe plicatilis (L.) Miller and includes their 5-LOX/COX-1 inhibiting potency.
Hans Wilhelm Rauwald, Ralf Maucher, Gerd Dannhardt, Kenny Kuchta   +3 more
doaj   +1 more source

Extraction and Purification of Siderophores Produced by Uropathogenic E. coli Local Iraqi Virulent Strains

The Iraqi Journal of Medical Sciences
Background: Siderophores are crucial for the proliferation of many disease-causing bacteria and also have significant functions in the transportation of non-iron metals, defense against oxidative stress, antibiotic effectiveness, interactions between ...
Reyam A. Jaber, Mohammed H. Mushrif, Nada H. Al-Mudallal   +2 more
doaj   +6 more sources

Ellagic acid derivatives from Terminalia chebula Retz. downregulate the expression of quorum sensing genes to attenuate Pseudomonas aeruginosa PAO1 virulence. [PDF]

PLoS ONE, 2013
BACKGROUND: Burgeoning antibiotic resistance in Pseudomonas aeruginosa has necessitated the development of anti pathogenic agents that can quench acylhomoserine lactone (AHL) mediated QS with least risk of resistance.
Sajal Sarabhai, Prince Sharma, Neena Capalash   +2 more
doaj   +1 more source

N-demethyl-sauroxine, a novel Lycodine Group alkaloid from Huperzia saururus [PDF]

, 2013
The present study describes the isolation and identification of N-demethyl-sauroxine, a novel Lycopodium alkaloid obtained from Huperzia saururus (Lam.) Trevis. (Lycopodiaceae).
Agnese, Mariel, Cabrera, Jose Luis, Ortega, María Gabriela, Vallejo, Mariana Guadalupe   +3 more
core   +2 more sources