Grupo UTN QUITEX - Difusión Científica - Artículos de Revista
http://hdl.handle.net/20.500.12272/3851
2024-03-28T20:48:18ZImpact of moisture and grinding on yield, physical, chemical and thermal properties of wholegrain flour obtained from hydrothermally treated sorghum grains
http://hdl.handle.net/20.500.12272/10049
Impact of moisture and grinding on yield, physical, chemical and thermal properties of wholegrain flour obtained from hydrothermally treated sorghum grains
The present work evaluates the potential of sorghum with high content of tannins for wholegrain flour production. Two types of mills were used: a roller mill (RM) and a blade (BM) mill. The impact of moisture and grinding on yield, physical, chemical and thermal properties were evaluated. Maximum yield was obtained using a BM with 25% moisture in the grain, resulting in 60.9% versus 28% (g flour g -1 wholegrain sorghum) for the RM. Grain moisture and milling type affected flour colour and ashes. For both mills, the pasting and thermal properties of flour with grain moisture variation were significantly different from the untreated control sample. By studying the procedures for flour production and quality characteristics, it is possible to produce flour with good physical attributes, which can contribute to the development of gluten-free foods based on sorghum for the coeliac population.
2020-02-03T00:00:00ZAugmentation of inductive effects through short range intramolecular hydrogen bonds for the improvement of cooperativity of trimeric rosettes
http://hdl.handle.net/20.500.12272/9824
Augmentation of inductive effects through short range intramolecular hydrogen bonds for the improvement of cooperativity of trimeric rosettes
Three key design elements improve the binding strength of trimeric rosettes: the direction of hydrogen bonds, the addition of groups with inductive effects, and the presence of ambifunctional intramolecular hydrogen bonds between the substituents.
2024-02-26T00:00:00ZAcidity of isomorphic substituted zeolites with B, Al and Ga revisited
http://hdl.handle.net/20.500.12272/9768
Acidity of isomorphic substituted zeolites with B, Al and Ga revisited
En este trabajo se analiza cómo afecta a a la acidez la sustitución de átomos de Silicio por átomos de Boro, Aluminio y Galio en tres tipos de zeolitas microporosas: BEA, FAU y MOR.
2024-02-13T00:00:00ZNature and strength of weak O···O interactions in nitryl halide dimers
http://hdl.handle.net/20.500.12272/8660
Nature and strength of weak O···O interactions in nitryl halide dimers
The use of real space functions and molecular graphs has pushed some chemists to wonder: Are interactions between negatively charged oxygen atoms possible? In this contribution we analyze whether there is a real interaction between oxygen atoms in nitryl halide dimers (XNO2)2 (X=F, Cl, Br and I) and in tetranitromethane and derivatives. Based on ab-initio and density functional theories (DFT) methods, we show these complexes are weakly stabilized. Energy decomposition analy ses based on local molecular orbitals (LMOEDA) and interacting quantum atoms (IQA) reveal both dispersion and exchange play a crucial role in the stabilization of these complexes. Electron charge density and IQA analyses indicate that the oxygen atoms are connected by privileged exchange channels. In addition, electrostatic interactions between O and N atoms are also vital for the stabilization of the complexes. Finally, a reasonable explanation is given for the dynamic behavior of nitryl groups in tetranitromethane and derivatives.
2023-01-04T00:00:00Z