4 research outputs found
Rapid and simultaneous determination of histidine metabolism intermediates in human and mouse microbiota and biomatrices
European Food Safety Authority; FEDER-Infraestructure Consejeria de Economia, Conocimiento, Empresas y Universidad, Grant/Award Number: IE_2019-198Histidine metabolism is a key pathway physiologically involved in satiety, recognition
memory, skin, and neural protection and allergic diseases. Microbiologicallyproduced
imidazole propionate induces type II diabetes and interferes with glucose
lowering drugs. Despite their determinant health implications, no single
method simultaneously assesses histidine metabolites in urine, feces, and microbiota.
The aim of this study was to develop a simple, rapid, and sensitive method
for the determination of histidine and its major bioactive metabolites histamine,
N-acetylhistamine, imidazole-4-acetate, cis-urocanate, trans-urocanate, glutamate
and imidazole propionate, using ultrahigh-performance liquid chromatography
with electrospray ionization tandem mass spectrometry. An innovative simple
extraction method from small aliquots of human and mice urine, feces and microbial cell extracts was coupled to separation in a 6.5 min chromatographic
run. The successful performance allowed accurate and precise quantification of all
metabolites in mouse feces, suggesting broad exchange of histidine metabolites
between the gut and mice. Higher urine histamine, histamine to histidine ratio,
and imidazole-4-acetate pointed to an underlying inflammatory or allergic process
in mice compared to human subjects. N-acetylhistamine and imidazole propionate
were detected in human and mouse feces, confirming its origin from gut microbial
metabolism. Our novel and robust analytical method captured histidine metabolism
in a single assay that will facilitate broad and deep histidine metabolic
phenotyping assessing the impact of microbiota on host health in large-scale
human observational and interventional studies.European Food Safety AuthorityFEDER-Infraestructure Consejeria de Economia, Conocimiento, Empresas y Universidad IE_2019-19
Pottery grave goods from funerary contexts at the argaric site of Peñalosa (Jaén). A methodological approach
The need for interdisciplinary studies is the basis of ambitious
research (ARCHEM Project) that is carried out in the argaric settlement of
Peñalosa (Baños de la Encina, Jaén), combining organic residues analysis
and techno-typological studies of pottery found in funerary contexts.
Manufacture and use of pottery could inform us about customs and traditions
that remain hidden in time and in the archaeological record. Knowing the
implications and decisions of potters as well as the functionality of those
vessels deposited inside the graves can approach the idiosyncrasy of a society
in the Bronze Age in the southeast of the Iberian Peninsula. The methodology
used to identify patterns of functionality is highlighted by the combination
of cutting-edge analysis techniques in both fields such as the application
of different chromatographic techniques (GC-MS, UPLC-HRMS and GC-CIRMS)
that allow to identify the organic compounds in the ceramics and the
application of analytical techniques from Earth Sciences (Stereomicroscopic,
X-Ray Diffraction and Petrography), which allow us to characterize ceramic
pastes and knowing the catchment of raw materials. This study highlights the
Peñalosa site as a melting pot of new research and it brings us closer with the
use of a complex methodology combined to the societies 4000 years ago.Spanish Ministry of Economy and Competitiveness
HAR2015-66009-PJunta de Andalucía
HUM 274
FQM 338Spanish Ministry of Economy, Industry and CompetitivinessUniversity of Granad
Germination Improves the Polyphenolic Profile and Functional Value of Mung Bean (Vigna radiata L.)
This research was funded by the University of Granada through project PSE/17/002 of Plan Propio, as well as the Spanish Ministry of Science, Innovation and Universities and the European Union through projects RTC-2017-6540-1, and RTI-2018-100934-B-I00 and the FEDER program, respectively. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.The use of legumes as functional foods has gained increasing attention for the prevention and treatment of the so called non-communicable diseases that are highly prevalent worldwide. In this regard, biotechnological approaches for the enhancement of legumes’ nutritional and functional value have been extensively employed. In the present study, the process of germination increased several parameters of mung bean (Vigna radiata L.) functionality, including extract yield, total phenolic content and in vitro antioxidant capacity. In addition, 3-day-germinated mung bean proved to be an interesting source of dietary essential minerals and exhibited a greater variety of polyphenolic compounds compared to raw mung bean. These properties resulted in enhanced cytoprotective features of the 3-day mung bean extracts against radical oxygen species in human colorectal (HT29) and monocyte (U937) cell lines. Moreover, the antiproliferative effects were tested in different colon cancer cell lines, T84 and drug-resistant HCT-18, as well as in a non-tumor colon CCD-18 line. Altogether, our results demonstrate that the germination process improves the mung bean’s nutritional value and its potential as a functional food.University of Granada through Plan Propio
PSE/17/002Spanish Ministry of Science, Innovation and UniversitiesEuropean Union (EU)
RTC-2017-6540-1
RTI-2018-100934-B-I0
Determinación de tensioactivos aniónicos en matrices ambientales. Comportamiento del jabón en una parcela agrícola
Tesis Univ. Granada. Departamento de Química Analítica. Leída el 19 de febrero de 201