52 research outputs found
Electrolyte effects on the Amino acid solubility in water: solubilities of Glycine, l-Leucine, l-Phenylalanine, and l-Aspartic acid in salt solutions of (Na+, K+, NH4+)/(Cl–, NO3–)
The solubilities of glycine, L-leucine, L-phenylalanine, and L-aspartic acid in aqueous solutions of the salts
composed by combining Na+, K+, and NH4 + cations and Cl− and NO3 − anions were measured up to 2.0 salt molality at 298.2 K by the analytical gravimetric method. Using these data along with a review of literature information, encompassing all amino acids for which solubility is available in the studied aqueous electrolyte solutions, allowed us to interpret the effect of the functional groups of amino acids on their solubility. The four amino acids studied here showed higher solubility in aqueous solutions of salts with the nitrate anion. Except for L-aspartic acid with a polar side chain, amino acids with apolar side chains presented the highest salting-in effect in aqueous salt solutions with NH4 +. The cations Na+ and K+
did not seem to establish relevant interactions with the amino acids and had little impact on their aqueous solubility.This work was developed within the scope of the project
CIMO-Mountain Research Center, UIDB/00690/2020 and
CICECO-Aveiro Institute of Materials, UIDB/50011/2020
and UIDP/50011/2020, financed by national funds through
the Portuguese Foundation for Science and Technology
(FCT)/MCTES. Mehriban Aliyeva thanks FCT and European
Social Fund (ESF) for her Ph.D. grant (SFRH/BD/139355/2018).info:eu-repo/semantics/publishedVersio
TFOS DEWS II Report Executive Summary
This article presents an Executive Summary of the conclusions and recommendations of the 10-chapter TFOS DEWS II report. The entire TFOS DEWS II report was published in the July 2017 issue of The Ocular Surface. A downloadable version of the document and additional material, including videos of diagnostic and management techniques, are available on the TFOS website: www.TearFilm.org
TFOS:Unique challenges and unmet needs for the management of ocular surface diseases throughout the world
Produção de genótipos de tomateiro tipo 'Salada' no perÃodo de inverno, em Araguari
Morphology, mineralogy and micromorphology of soils associated to summit depressions of the Northeastern Brazilian Coastal Plains
Avaliação da introdução de tecnologias no sistema de produção de gado de corte no Pantanal: análise de eficiência
Intervalo hÃdrico ótimo no monitoramento da compactação e da qualidade fÃsica de um latossolo vermelho cultivado com soja
Qualidade fÃsica do solo em um latossolo vermelho da região sudoeste dos cerrados sob diferentes sistemas de uso e manejo
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