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21. (+)-Catechin inhibits heart mitochondrial complex I and nitric oxide synthase: functional consequences on membrane potential and hydrogen peroxide production

Author:
Bombicino, Silvina S.,   et al.   ; Iglesias, Darío E.; Boveris, Alberto; Valdez, Laura B.;     Show all 4 Authors
Source:
Food & function 2019 v.10 no.5 pp. 2528-2537
ISSN:
2042-650X
Subject:
adenosine diphosphate; enzyme activity; heart; hydrogen peroxide; membrane potential; mitochondria; mitochondrial membrane; nitric oxide; nitric oxide synthase; rats
Abstract:
... In order to study the in vitro effect of flavan-3-ol (+)-catechin on the enzymatic activities of mitochondrial complex I and nitric oxide synthase (mtNOS), as well as the consequences on the membrane potential and H₂O₂ production rate, isolated mitochondria from rat heart were exposed to 3 nM to 100 μM (+)-catechin. NADH–Q₁ reductase (complex I) and mtNOS activities were inhibited 25% and 50%, res ...
DOI:
10.1039/c8fo01843j

22. Enhancement of Composition and Oxidative Stability of Chia (Salvia hispanica L.) Seed Oil by Blending with Specialty Oils

Author:
Meriles, Silvina Patricia,   et al.   ; Bordón, María Gabriela; Ribotta, Pablo Daniel; Martinez, Marcela Lilian;     Show all 4 Authors
Source:
Journal of food science 2019 v.84 no.5 pp. 1035-1044
ISSN:
0022-1147
Subject:
Salvia hispanica; almonds; antioxidants; essential fatty acids; fats and oils industry; fatty acid composition; free fatty acids; mixing; omega-3 fatty acids; oxidation; oxidative stability; polyunsaturated fatty acids; prices; seed oils; sensory evaluation; sensory properties; vegetable oil; walnuts
Abstract:
... Chia seed (Salvia hispanica L.) oil is mainly composed of ω‐3 fatty acids (61% to 70%). Despite being nutritionally favorable, higher amounts of polyunsaturated fatty acids result in poorer oxidative stability. Thus, the aim of this work was to produce edible vegetable oil blends rich in ω‐3 fatty acids and with greater oxidative stability than pure chia oil. Blending of chia with other specialty ...
DOI:
10.1111/1750-3841.14580

23. Nitrogen accumulation in grains, remobilization and post-anthesis uptake under tan spot and leaf rust infections on wheat

Author:
Golik, Silvina Inés,   et al.   ; Schierenbeck, Matías; Fleitas, María Constanza; Cortese, Facundo; Simón, María Rosa;     Show all 5 Authors
Source:
Field crops research 2019 v.235 pp. 27-37
ISSN:
0378-4290
Subject:
Drechslera; Puccinia recondita; Pyrenophora tritici-repentis; Triticum aestivum; anamorphs; crops; cultivars; experimental design; fungi; grain yield; inoculum; leaf rust; models; nitrogen; nutrition; pathogens; tissues; wheat
Abstract:
... Nitrogen (N) fluxes involve important processes determining grain yield and quality in wheat (Triticum aestivum L.) and could be affected by major fungal diseases like leaf rust (Puccinia triticina Eriks) and tan spot [Pyrenophora tritici-repentis (Died.) Drechs., anamorph Drechslera tritici-repentis) (Died.) Shoem.]. Although effects of foliar diseases on N accumulation and translocation have alr ...
DOI:
10.1016/j.fcr.2019.02.016

24. Red seaweed Pyropia columbina as antioxidant supplement in feed for cultured juvenile Pacú (Piaractus mesopotamicus)

Author:
Drago, Silvina R.,   et al.   ; Cian, Raúl E.; Bacchetta, Carla; Rossi, Andrea; Cazenave, Jimena;     Show all 5 Authors
Source:
Journal of applied phycology 2019 v.31 no.2 pp. 1455-1465
ISSN:
0921-8971
Subject:
Piaractus mesopotamicus; Pyropia; antioxidant activity; antioxidants; body weight; catalase; condition factor; diet; farmed fish; fish feeding; glutathione transferase; hemoglobin; ingredients; intestines; juveniles; lipid metabolism; lipid peroxidation; liver; macroalgae; malondialdehyde; muscles; nutritional status; specific growth rate; superoxide dismutase
Abstract:
... The aim of this study was to evaluate the antioxidant effect of red seaweed Pyropia columbina on juvenile Pacú (Piaractus mesopotamicus). Two hundred and ten (n = 210) fish were fed for 90 days with a control extruded feed (CEF) or the same feed added with P. columbina (35 g kg⁻¹) (PcEF). No significant difference in final body weight, specific growth rate, condition factor, and liver somatic inde ...
DOI:
10.1007/s10811-018-1648-2

25. Ensembles from Ordered and Disordered Proteins Reveal Similar Structural Constraints during Evolution

Author:
Fornasari, María Silvina,   et al.   ; Marchetti, Julia; Monzon, Alexander Miguel; Tosatto, Silvio C.E.; Parisi, Gustavo;     Show all 5 Authors
Source:
Journal of molecular biology 2019 v.431 no.6 pp. 1298-1307
ISSN:
0022-2836
Subject:
amino acids; evolution; models; proteins
Abstract:
... The conformations accessible to proteins are determined by the inter-residue interactions between amino acid residues. During evolution, structural constraints that are required for protein function providing biologically relevant information can exist. Here, we studied the proportion of sites evolving under structural constraints in two very different types of ensembles, those coming from ordered ...
DOI:
10.1016/j.jmb.2019.01.031

26. A solar irradiation GIS as decision support tool for the Province of Salta, Argentina

Author:
Belmonte, Silvina,   et al.   ; Sarmiento, Nilsa; Dellicompagni, Pablo; Franco, Judith; Escalante, Karina; Sarmiento, Joaquín;     Show all 6 Authors
Source:
Renewable energy 2019 v.132 pp. 68-80
ISSN:
0960-1481
Subject:
decision making; decision support systems; empirical models; energy; energy policy; geographic information systems; greenhouse gas emissions; production technology; remote sensing; satellites; socioeconomics; solar collectors; solar energy; solar radiation; Argentina
Abstract:
... The province of Salta is characterized by its solar energy high potential. The use of solar resource would improve living conditions in the area, diversify the energy matrix, promote more sustainable production systems and reduce greenhouse gases emissions. However, there are only a few studies that describe in high spatial resolution the variability of the solar resource in Argentina. Multidimens ...
DOI:
10.1016/j.renene.2018.07.081

27. Xenia in bahiagrass: gene expression at initial seed formation

Author:
Felitti, Silvina A.,   et al.   ; Pozzi, Florencia I.; Pratta, Guillermo R.; Acuña, Carlos A.;     Show all 4 Authors
Source:
Seed science research 2019 v.29 no.1 pp. 29-37
ISSN:
1475-2735
Subject:
crossing; pollen; hybrids; phenotype; gene expression; genotype; phenotypic variation; screening; gene expression regulation; messenger RNA; pollen tubes; progeny; crops; pollination; Paspalum notatum; seed germination; fruits; endosperm; plant ovary; seed development
Abstract:
... Xenia is the direct effect of pollen genotype on the development and characteristics of the seed and fruit in the period that spans from fertilization to seed germination. Xenia effects cause phenotypic variations in the seed and fruit, which have importance for seed and fruit production but are not heritable to the progeny. Two hypotheses have been proposed as a mechanism for xenia: the hormonal ...
DOI:
10.1017/S0960258518000375

28. Development of low-cost formulations of plant growth-promoting bacteria to be used as inoculants in beneficial agricultural technologies

Author:
Juárez Tomás, María Silvina,   et al.   ; Lobo, Constanza Belén; Viruel, Emilce; Ferrero, Marcela Alejandra; Lucca, María Ester;     Show all 5 Authors
Source:
Microbiological research 2019 v.219 pp. 12-25
ISSN:
0944-5013
Subject:
biomass production; crop production; crops; humidity; liquids; phosphates; phosphorus; plant development; plant growth-promoting rhizobacteria; soil; storage time; temperature
Abstract:
... Phosphorus is one of the main macronutrients for plant development. Despite its large deposits in soils, it is scarcely available for plants. Phosphate-solubilizing bacteria, belonging to the group of plant growth-promoting rhizobacteria (PGPR), are capable of mobilizing deposits of insoluble phosphates in the soil. The use of PGPR as inoculants provides an environmentally sustainable approach to ...
DOI:
10.1016/j.micres.2018.10.012

29. Aptitude of sorghum (Sorghum bicolor (L) Moench) hybrids for brewery or bio‐functional malted beverages

Author:
Drago, Silvina R.,   et al.   ; Garzón, Antonela G.;     Show all 2 Author
Source:
Journal of food biochemistry 2018 v.42 no.6 pp. e12692
ISSN:
0145-8884
Subject:
Sorghum bicolor; antioxidant activity; beers; beta-amylase; brewing; brewing industry; color; enzyme activity; equations; free amino acids; gamma-aminobutyric acid; hybrids; malting; markets; phenolic compounds; prediction; protein content; raw materials
Abstract:
... The potential of twenty‐four hybrids of white (WS) and red sorghum (RS) to produce beer or bio‐functional malted beverages was studied. Brewery aptitude was evaluated through diastatic power (DP), β‐amylase activity, hot water extract (HWE), and Kolbach index using sorghum malted at 30°C; while bio‐functional potential was evaluated through GABA, free amino acids (FAA) content, phenolics, and anti ...
DOI:
10.1111/jfbc.12692

30. Alkylhalovinylboranes: a new class of Diels–Alder dienophiles

Author:
Pellegrinet, Silvina C.,   et al.   ; Pisano, Pablo L.;     Show all 2 Author
Source:
RSC advances 2018 v.8 no.59 pp. 33864-33871
ISSN:
2046-2069
Subject:
boron; cycloaddition reactions; halogens; moieties; organic halogen compounds
Abstract:
... The Diels–Alder reactions of alkylhalovinylboranes have been investigated theoretically and experimentally. Alkylhalovinylboranes presented higher reactivity than the corresponding dialkylvinylboranes. Although endo/exo selectivities were high for the reactions with cyclopentadiene, facial selectivities for the chiral analogues were low. Our results demonstrate that the replacement of an alkyl gro ...
DOI:
10.1039/c8ra07089j

31. Free α-amino acids, γ-Aminobutyric acid (GABA), phenolic compounds and their relationships with antioxidant properties of sorghum malted in different conditions

Author:
Drago, Silvina R.,   et al.   ; Garzón, Antonela G.;     Show all 2 Author
Source:
Journal of food science and technology 2018 v.55 no.8 pp. 3188-3198
ISSN:
0022-1155
Subject:
antioxidant activity; bioactive compounds; correlation; coumaric acids; cultivars; free amino acids; gamma-aminobutyric acid; germination; malt; malting; temperature
Abstract:
... Two cultivars of sorghum were germinated at 25 or 30 °C for 1, 2, or 3 days to investigate the evolution of γ-Aminobutyric acid (GABA), total free phenolic compounds (FPC), hydroxycinnamic acid derivatives, free amino acid (FAA) profile, and antioxidant activity during malting. Results showed time–temperature interaction had significant influence on GABA accumulation, increasing over time at 25 °C ...
DOI:
10.1007/s13197-018-3249-0

32. Evaluating accuracy of DSSAT model for soybean yield estimation using satellite weather data

Author:
Sayago, Silvina,   et al.   ; Ovando, Gustavo; Bocco, Mónica;     Show all 3 Authors
Source:
ISPRS journal of photogrammetry and remote sensing 2018 v.138 pp. 208-217
ISSN:
0924-2716
Subject:
crop models; crop yield; cropping systems; crops; energy; maturity groups; meteorological data; planting date; rain; satellites; solar radiation; soybeans; uncertainty; Argentina; Latin America
Abstract:
... Crop models allow simulating the development and yield of the crops, to represent and to evaluate the influence of multiple factors. The DSSAT cropping system model is one of the most widely used and contains CROPGRO module for soybean. This crop has a great importance for many southern countries of Latin America and for Argentina. Solar radiation and rainfall are necessary variables as inputs for ...
DOI:
10.1016/j.isprsjprs.2018.02.015

33. Effect of pH on chitosan hydrogel polymer network structure

Author:
Matysiak, Silvina,   et al.   ; Xu, Hongcheng;     Show all 2 Author
Source:
Chemical communications 2017 v.53 no.53 pp. 7373-7376
ISSN:
1364-548X
Subject:
chemical reactions; chitosan; crosslinking; hydrogels; mechanical properties; models; modulus of elasticity; pH; polymers
Abstract:
... Chitosan is a molecule that can form water-filled 3D polymer networks with a wide range of applications. A new coarse-grained model for chitosan hydrogel was developed to explore its pH-dependent self-assembly behavior and mechanical properties. Our results indicate that the underlying polymer physical crosslinking pattern induced by solution pH has a significant effect on hydrogel elastic moduli. ...
DOI:
10.1039/c7cc01826f

34. A membrane-associated adenylate cyclase modulates lactate dehydrogenase and creatine kinase activities required for bull sperm capacitation induced by hyaluronic acid

Author:
Fernández, Silvina,   et al.   ; Córdoba, Mariana;     Show all 2 Author
Source:
Animal reproduction science 2017 v.179 pp. 80-87
ISSN:
0378-4320
Subject:
acrosome; acrosome reaction; adenylate cyclase; aerobiosis; bulls; chlortetracycline; creatine kinase; cryopreservation; enzyme activity; female genitalia; heparin; hyaluronic acid; lactate dehydrogenase; lactic acid; metabolites; microscopy; plasma membrane; sperm capacitation
Abstract:
... Hyaluronic acid, as well as heparin, is a glycosaminoglycan present in the female genital tract of cattle. The aim of this study was to evaluate oxidative metabolism and intracellular signals mediated by a membrane-associated adenylate cyclase (mAC), in sperm capacitation with hyaluronic acid and heparin, in cryopreserved bull sperm. The mAC inhibitor, 2′,5′-dideoxyadenosine, was used in the prese ...
DOI:
10.1016/j.anireprosci.2017.02.004

35. A thermostable GH8 endoglucanase of Enterobacter sp. R1 is suitable for β-glucan deconstruction

Author:
Ghio, Silvina,   et al.   ; Ontañon, Ornella M.; Marrero Díaz de Villegas, Rubén; Garrido, Mercedes M.; Talia, Paola M.; Fehér, Csaba; Campos, Eleonora;     Show all 7 Authors
Source:
Food chemistry 2019 v.298 pp. 124999
ISSN:
0308-8146
Subject:
Enterobacter; barley; beta-glucans; carboxymethylcellulose; cellulose synthase; chitosanase; endo-1,4-beta-glucanase; enzyme activity; feed industry; functional foods; glucose; glycosides; hydrolysis; molecular models; oats; oligosaccharides; pH; prebiotics; temperature; thermal stability; wheat; xylanases
Abstract:
... Glycoside hydrolase family 8 (GH8) includes endoglucanases, lichenases, chitosanases and xylanases, which are essential for polysaccharides breakdown. In this work, we studied a thermally stable GH8 from the cellulose synthase complex of Enterobacter sp. R1, for deconstruction of β-glucans. The biochemical characterization of the recombinant GH8ErCel showed high specificity towards barley β-glucan ...
DOI:
10.1016/j.foodchem.2019.124999

36. Ex vivo and in vivo effects of arsenite on GST and ABCC2 activity and expression in the middle intestine of the rainbow trout Oncorhynchus mykiss

Author:
Villanueva, Silvina S.M.,   et al.   ; Painefilú, Julio C.; Pascual, Mariano M.; Bieczynski, Flavia; Laspoumaderes, Cecilia; González, Carolina; Luquet, Carlos M.;     Show all 7 Authors
Source:
Comparative biochemistry and physiology 2019 v.225 pp. 108566
ISSN:
1532-0456
Subject:
Oncorhynchus mykiss; arsenic; arsenites; enterocytes; fish; gene expression; liver; microcystin-LR; toxicity; transcription (genetics); transporters
Abstract:
... In fish of freshwaters environments, the accumulation and toxic effects of arsenite (AsIII) can be attenuated by detoxification proteins such as GST and ABCC transporters. We studied the effects of AsIII on the middle intestine of O. mykiss in ex-vivo and in vivo/ex vivo assays. For the ex vivo assays, we measured the transport rate of the ABCC substrate DNP-SG and GST activity in intestinal strip ...
DOI:
10.1016/j.cbpc.2019.108566

37. Correction to: Paenibacillus sp. A59 GH10 and GH11 Extracellular Endoxylanases: Application in Biomass Bioconversion

Author:
Ghio, Silvina,   et al.   ; Ontañon, Ornella; Piccinni, Florencia E.; Marrero Díaz de Villegas, Rubén; Talia, Paola; Grasso, Daniel H.; Campos, Eleonora;     Show all 7 Authors
Source:
BioEnergy research 2019 v.12 no.3 pp. 743
ISSN:
1939-1234
Subject:
Paenibacillus; biomass; biotransformation; endo-1,4-beta-xylanase
Abstract:
... The article Paenibacillus sp. A59 GH10 and GH11 Extracellular Endoxylanases: Application in Biomass Bioconversion, written by Silvina Ghio, Ornella Ontañon, Florencia E. Piccinni, Rubén Marrero Díaz de Villegas, Paola Talia, Daniel H. Grasso and Eleonora Campos. ...
DOI:
10.1007/s12155-019-09982-9

38. Persistence of chromate in vadose zone and aquifer sediments in Hanford, Washington

Author:
Di Pietro, Silvina,   et al.   ; Szecsody, Jim E.; Truex, Mike J.; Qafoku, Nikolla P.; McKinley, James P.; Ivarson, Kristine A.;     Show all 6 Authors
Source:
The Science of the total environment 2019 v.676 pp. 482-492
ISSN:
0048-9697
Subject:
aquifers; barium; calcium; chromium; crystals; groundwater; iron; leaching; plagioclase; sediments; solubility; vadose zone; Washington (state)
Abstract:
... This study of vadose zone and aquifer sediments beneath a former dichromate spill site showed that the persistence of CrVI in the sediments and the large differences in released mass and rate was caused by the dissolution of multiple CrVI surface phases. Vadose zone sediments contained numerous 1 to 10 μm high solubility calcium chromate crystals, with lesser amounts of unidentified phases indicat ...
DOI:
10.1016/j.scitotenv.2019.04.173

39. The Bradyrhizobium diazoefficiens two-component system NtrYX has a key role in symbiotic nitrogen fixation of soybean plants and cbb3 oxidase expression in bacteroids

Author:
López-García, Silvina L.,   et al.   ; López, María Florencia; Hegel, Valeria A.; Torres, María Jesús; García, Alba Hidalgo; Delgado, María J.;     Show all 6 Authors
Source:
Plant and soil 2019 v.440 no.1-2 pp. 167-183
ISSN:
0032-079X
Subject:
Bradyrhizobium diazoefficiens; enzyme activity; food production; mutants; nitrogen; nitrogen content; nitrogen fixation; nitrogenase; root nodules; soil bacteria; soybeans; symbiosis
Abstract:
... AIMS: Bradyrhizobium diazoefficiens is a soil bacterium capable of establishing nitrogen-fixing symbiosis with soybean plants, an important crop for food production worldwide. This interaction is under the control of several regulatory factors that affect the bacterial efficiency to nodulate legume plants and fix nitrogen within root nodules. To date, the function of the NtrYX two-component system ...
DOI:
10.1007/s11104-019-04067-0

40. Microbiological risk characterization in butcher shops from the province of Neuquen, Patagonia Argentina

Author:
Soto, Silvina A.,   et al.   ; Barril, Patricia A.; Jaureguiberry, María V.; Gottardi, Gabriela; Bascur, Ianina; Leotta, Gerardo A.; Oteiza, Juan M.;     Show all 7 Authors
Source:
Lebensmittel-Wissenschaft + [i.e. und] Technologie 2019 v.107 pp. 35-40
ISSN:
0023-6438
Subject:
Escherichia coli O157; Salmonella; butcher shops; cross contamination; ground beef; microbiological quality; microbiological risk assessment; microorganisms; pathogens; ready-to-eat foods; ribotyping; risk characterization; risk reduction; virulent strains; Argentina
Abstract:
... Meat products may be vehicles of bacterial pathogens to humans. In this study, we determined both hygienic-sanitary risk and microbiological quality of raw ground beef and meat contact surfaces in butcher shops from Neuquén Province, Argentina. The hygienic-sanitary risk of the butcher shops was characterized based on the quantitative results of a checklist. A total of 44 raw ground meat and 49 me ...
DOI:
10.1016/j.lwt.2019.02.074