Hydroponic experiments were performed to exam the dynamic change of endogenous proline in rice seedlings exposed to potassium chromate chromium (VI) or chromium nitrate chromium (III). Although accumulation of both chromium species in rice seedlings was obvious, more chromium was detected in plant tissues of rice seedlings exposed to chromium (III) than those in chromium (VI), majority being in...

(S)-(1-Pyrrolidin-2-ylmethyl)quinuclidine-1-ium bromide was synthesized in a six-step reaction process starting from l-proline and spectroscopically thermally characterized.

A higher level of fertilizers can have negative effects on the environment; therefore, selection environmentally friendly preparations to increase plant productivity is very important. The aim this study was evaluate effect exogenously applied amino acids L-proline (30 mM L-1) and L-glutamic acid (1.5 M winter rapeseed (Brassica napus L. subsp. oleifera (Delile) Sinskaya) measuring number siliq...

An investigation was carried out on the effect of some amino acids on the growth and production of Lglutamic acid by a mutant Micrococcus glutamicus AB100 using selected suitable synthetic medium. It was observed that among different amino acids studied, l-alanine, l-arginine, l-threonine, l-tryptophan, l-proline and l-hitidine had positive effect; l-leucine, l-valine, l-phenylalanine, l-serine...

Dihydroxyacetone variants have been explored as donors in organocatalytic aldol reactions with various aldehyde and ketone acceptors. The protected form of dihydroxyacetone that was chosen for in-depth study was 2,2-dimethyl-1,3-dioxan-5-one, 1. Among the catalysts surveyed here, proline proved to be superior in terms of yield and stereoselectivities in the construction of various carbohydrate ...

We report the first complete characterization of metallycryptates encapsulating Ag(I) cations: carboxylato ligands derived from l-proline and l-alanine chelate and bridge six Cu(II) centres arranged in a slightly distorted octahedral fashion. Eight oxygen atoms of these ligands are disposed in square-prismatic geometry and coordinate the monovalent cation. Two alternative metallacryptates based...