Raquel Olías

ORCID: 0000-0003-2571-4539
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Research Areas
  • Protein Hydrolysis and Bioactive Peptides
  • Plant nutrient uptake and metabolism
  • Postharvest Quality and Shelf Life Management
  • Fermentation and Sensory Analysis
  • Plant Stress Responses and Tolerance
  • Proteins in Food Systems
  • Plant Molecular Biology Research
  • Plant Gene Expression Analysis
  • Phytochemicals and Antioxidant Activities
  • GABA and Rice Research
  • Genetic and Environmental Crop Studies
  • Plant tissue culture and regeneration
  • Photosynthetic Processes and Mechanisms
  • Agricultural pest management studies
  • Phytase and its Applications
  • Food composition and properties
  • Advanced Glycation End Products research
  • Peroxisome Proliferator-Activated Receptors
  • Tannin, Tannase and Anticancer Activities
  • Microbial Metabolites in Food Biotechnology
  • Nutrition, Health and Food Behavior
  • Neuropeptides and Animal Physiology
  • Light effects on plants
  • Food Allergy and Anaphylaxis Research
  • Meat and Animal Product Quality

Estación Experimental del Zaidín
2009-2025

Consejo Superior de Investigaciones Científicas
2009-2024

Unidades Centrales Científico-Técnicas
2009

Instituto de la Grasa
1996-2002

We have identified a plasma membrane Na(+)/H(+) antiporter gene from tomato (Solanum lycopersicum), SlSOS1, and used heterologous expression in yeast to confirm that SlSOS1 was the functional homolog of AtSOS1. Using post-transcriptional silencing, we evaluated role played by long-distance Na(+) transport salt tolerance tomato. Tomato because its anatomical structure, more complex than Arabidopsis, agricultural significance. Transgenic plants with reduced exhibited growth rate compared...

10.1111/j.1365-3040.2009.01971.x article EN Plant Cell & Environment 2009-03-03

The Ca(2+)-dependent SOS pathway has emerged as a key mechanism in the homeostasis of Na(+) and K(+) under saline conditions. We have identified functionally characterized gene encoding calcineurin-interacting protein kinase tomato, SlSOS2. On basis sequence similarity complementation studies yeast Arabidopsis, it can be concluded that SlSOS2 is functional tomato homolog Arabidopsis AtSOS2 operates signal transduction pathway. biotechnological potential to provide salt tolerance was...

10.1111/j.1365-3040.2012.02504.x article EN Plant Cell & Environment 2012-03-06

The enzymes lipoxygenase and hydroperoxide lyase have been identified in strawberry (Fragaria × ananassa Duch.) var. Camarosa. Their subcellular localization, substrate preference, product specificity were determined mature fruits. activity of both was located mainly the microsomal fraction. Linolenic acid preferred for lipoxygenase, forming 13- 9-hydroperoxides this proportion 70:30. cleaves 13-hydroperoxide linoleic (13% relative activity) linolenic (100% acids to form hexanal...

10.1021/jf9807519 article EN Journal of Agricultural and Food Chemistry 1998-12-09

10.1016/j.cofs.2017.01.005 article EN Current Opinion in Food Science 2017-01-27

Four strawberry (Fragaria ananassa × Duch.) varieties Oso Grande, Chandler, Tudla, and I-101) were studied in relation to their alcohol acyltransferase (AAT) activity. AAT activity profile during fruit development ripening was determined for each variety. The highest value corresponded which is also the variety showing earliest maximum peak of effect passive modified atmosphere (MA) storage on studied. An increase found strawberries stored under high CO2 (>30%). This higher level could be...

10.1021/jf960040f article EN Journal of Agricultural and Food Chemistry 1996-01-01

The fate of amino acids in relation to aroma biogenesis was studied strawberries using the vitro growth approach. This fruit presented differences level metabolization for different acids. Incubations with L-isoleucine gave rise an increase fourteen compounds this aroma, either not detected previously or constituents strawberry aroma. However, L-valine incubations did provide a significant change Strawberry feeding resulted 7-fold sum 2-methylbutanoate esters, and double production...

10.1021/jf011465r article EN Journal of Agricultural and Food Chemistry 2002-06-11

Furaneol, mesifurane, and furaneol glucoside contents during ripening of four strawberry varieties (Oso Grande, Chandler, Tudla, I-101) have been analyzed. Patterns furanone were similar for the varieties, amounts increasing to reach highest values at overripe stage. However, derivatives differed quantitatively among varieties. The amount shown by Oso Grande stage is so far reported (37.05 μg/g fw). content in mesifurane was found I-101 variety, stage, 23.5 13.2 fw, respectively. Results...

10.1021/jf960099m article EN Journal of Agricultural and Food Chemistry 1996-01-01

Several classes of seed proteins limit the utilisation plant in human and farm animal diets, while foods have much to offer sustainable intensification food/feed production health. Reduction or removal these could greatly enhance protein quality various strategies been used try achieve this with limited success. We investigated whether protease inhibitor mutations be exploited quality, availing induced mutant natural Pisum germplasm collections identify mutants, whilst acquiring an...

10.1371/journal.pone.0134634 article EN cc-by PLoS ONE 2015-08-12

Strawberry fruits (Fragaria × ananassa Duch.), cultivar Camarosa, were harvested at green inmature stages and grown in vitro sucrose-containing solutions. The effect of exogenously added methyl jasmonate (JAMe, 50 μM) on development ripening strawberry was evaluated through different parameters. A significant increase respiratory activity ethylene production determined white pink strawberries treated with JAMe, while responses elicited from ripe overripe fruits. higher growth rate found...

10.1021/jf9703563 article EN Journal of Agricultural and Food Chemistry 1997-10-01

Functional gluten-free biscuits enriched with commercial and landrace non-commercial chickpea flours were designed compared a traditional shortbread biscuit. They analyzed in sensory attributes, amino acid profile, antioxidant properties. Subsequently, the digested vitro to evaluate protein hydrolysis, bioaccessibility, phenolic compounds release, markers. The presence of provided golden color heightened biscuit hardness fracturability (especially non-commercial), increasing crispness...

10.3390/antiox13010118 article EN cc-by Antioxidants 2024-01-17

Abstract BACKGROUND In the global socioeconomic context and current climate change scenario, investigating nutritional bioactive characteristics of landraces can provide interesting profiles with technological applications benefits for human health. The purpose this work was to improve our knowledge regarding phenolic composition several chickpea accessions preserved in a gene bank compared widely consumed cultivars, as first approach establish their potential interest. CIELab colour,...

10.1002/jsfa.14158 article EN cc-by-nc-nd Journal of the Science of Food and Agriculture 2025-02-06

The Ca2+-dependent SOS pathway has emerged as a key mechanism in the homeostasis of Na+ and K+ under saline conditions. We recently identified functionally characterized by complementation studies yeast Arabidopsis gene encoding calcineurin-interacting protein kinase tomato, SlSOS2.Citation1 also show evidences on biotechnological potential SlSOS2 conferring salt tolerance to transgenic tomato. increased salinity overexpressing plants is associated with higher sodium content stems leaves....

10.4161/bioe.20796 article EN Bioengineered 2012-09-18

The presence of so-called anti-nutritional factors can reduce the bioavailability nutrients following consumption seeds which are otherwise an excellent source proteins, carbohydrates and micronutrients. Among proteins associated with negative effects on quality in pea (Pisum sativum L.) lectin, albumin 2 (PA2) trypsin inhibitors (TI). Here we have investigated impact these protein digestibility amino acid availability, using naturally occurring derived mutant lines lacking proteins....

10.1016/j.foodres.2023.112825 article EN cc-by-nc-nd Food Research International 2023-04-14

The substrate specificity of alcohol acyltransferase (AAT) enzymes from different strawberry varieties was studied. Proteins with AAT activity fruits Fragaria x ananassa Duch. cv. Oso Grande were purified to apparent homogeneity and used for kinetic studies straight-chain alcohols acyl-CoAs. K(m) values obtained enzyme six alcohols, using acetyl-CoA as cosubstrate, decreased increasing length the chain. In similar experiments increase in acyl-CoA carbon chain also found be correlated a...

10.1021/jf011460u article EN Journal of Agricultural and Food Chemistry 2002-06-01

Legume consumption has been reported to induce beneficial effects on obesity-associated metabolic disorders, but the underlying mechanisms have not fully clarified. In current work, pea (Pisum sativum L.) seed meal proteins (albumins, legumins and vicilins) were isolated, submitted a simulated gastrointestinal digestion, of their hydrolysates (pea albumins (PAH), (PLH) vicilin (PVH), respectively) 3T3-L1 murine pre-adipocytes investigated. The hydrolysate native vicilins, increased lipid...

10.3390/foods9060793 article EN cc-by Foods 2020-06-16

Whey-based beverages could be an effective way of reusing a by-product th cheese industry, mitigating environmental hazards and, at the same time, profiting useful food with high nutritional and antioxidant properties. In this study, traditional Ecuadorian beverage (Colada) was prepared combining sweet whey, Maracuyá barley. Antioxidant properties before after in vitro digestion using INFOGEST method were determined, relationships intestinal transformations lipid protein fractions analyzed....

10.3390/antiox11091827 article EN cc-by Antioxidants 2022-09-16

Two lipoxygenase isoenzymes, BBL-1 and BBL-2, were purified from broad beans. Fractionation of globulins albumins by ionic strength was preferred to the classical water extraction system ammonium sulfate fractionation as initial purification steps. From albumin fraction, BBL-2 17.6 35.7-fold, respectively, conventional gel filtration ion-exchange chromatography. The molecular weight both 97 kDa with a maximal activity around pH 5.8; however, they showed significant difference in their Km...

10.1021/jf990463s article EN Journal of Agricultural and Food Chemistry 2000-03-18

The biosynthesis of 2,5-dimethyl-4-hydroxy-3(2H)-furanone (Furaneol) and its methyl ether glucoside derivatives has been studied in strawberries. An vitro system was used for growing this fruit, showing that the presence incubation medium sucrose or hydroxyquinoline hemisulfate no effect on bioformation these compounds. Strawberries grown showed an increase furanone content with time, especially between second fourth days, to same extent as field-grown fruits but at a higher rate. Among...

10.1021/jf980404z article EN Journal of Agricultural and Food Chemistry 1999-01-27

The Ca2+-dependent SOS pathway has emerged as a key mechanism in the homeostasis of Na+ and K+ under saline conditions. We recently identified functionally characterized by complementation studies yeast Arabidopsis gene encoding calcineurin-interacting protein kinase tomato, SlSOS2.Citation1 also show evidences on biotechnological potential SlSOS2 conferring salt tolerance to transgenic tomato. increased salinity overexpressing plants is associated with higher sodium content stems leaves....

10.4161/bbug.20796 article EN cc-by-nc Bioengineered Bugs 2012-05-21
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