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3691.
Monitoring okolja : Strokovno predavanje na Raziskovalne taboru Lisca 2018
Jelena Topic, prispevek na konferenci brez natisa

Ključne besede: monitoring, okolje
Objavljeno v RUNG: 13.12.2018; Ogledov: 2896; Prenosov: 0
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3692.
Characterization of lactic bacteria for biogenic amine formation
Jelena Topic, Lorena Butinar, Martina Bergant Marušič, Dorota Korte, Branka Mozetič Vodopivec, 2018, samostojni znanstveni sestavek ali poglavje v monografski publikaciji

Opis: Biogenic amines are compounds present in many different foods and beverages (wine, beer, dairy products, fermented vegetables and soy products, fish, etc.). Their presence in foodstuff is a result of a microbial action during storage and ageing. The most important are histamine, tryptamine, β-phenylethylamine and tryptamine, which can induce undesirable physiological effects in humans. They are formed through decarboxylation of corresponding amino acids, through the action of enzymes. Consumption of food containing biogenic amines can lead to food poisoning such as histamine poisoning. Histamine, the most studied biogenic amine, is known to cause headaches, oedema, vomiting, etc. [1]–[4]. Monitoring of the content of biogenic amines in foods is of concern for public health in their relation to the food safety, food spoilage and food intolerance. Because microorganisms are used in food productions as starters and biopreservers, characterization of microorganisms for their ability to produce biogenic amines is equally important. Lactic acid bacteria are often used as biopreservers as they can produce antimicrobial metabolites and antifungal peptides. Some strains can also produce undesirable biogenic amines [5]. In order to use lactic acid bacteria as starters or biopreservers, the selection of strains that would not produce biogenic amines is necessary. When considering studies of biogenic amines in foods, focus should be on developing new or improving analysis methods for biogenic amines detection. Secondly, the connections between microorganisms capable of producing biogenic amines and the content of biogenic amines in foods should be investigated [3]. The most widely technique used for quantification of biogenic amines in foodstuff is liquid chromatography, Alternatively to chromatographic techniques, other techniques such as enzymatic biosensors, ELISA and flow-injection analysis have also been employed. Sensors are interesting due to the fact that they do not require special instrumentations, and there is no need for sample clean-up and derivatization, which are the main drawback of chromatographic methods [4]. Detection of biogenic amines producing lactic bacteria is important due to the concerns for public health and there is a need for the early and rapid detection of such microorganisms. Most of the methods that are used for screening involved the measurement of amino acid-decarboxylase activity, although there were been some methods reported that used differential media and pH indicators. Nowadays, molecular methods are replacing culture methods. Molecular approaches are used to determine the presence or absence of genes responsible for biogenic amines formation. The main advantages of DNA hybridization and PCR methods are speed, simplicity, sensitivity and specificity as they allow detection of targeted genes. Culture independent methods which are based on PCR techniques are now regarded as most suitable methods for screening isolates [5]. [1] A. R. Shalaby, “Significance of biogenic amines to food safety and human health,” Food Res. Int., vol. 29, no. 7, pp. 675–690, Oct. 1996. [2] J. M. Landete, S. Ferrer, and I. Pardo, “Biogenic amine production by lactic acid bacteria, acetic bacteria and yeast isolated from wine,” Food Control, vol. 18, pp. 1569–1574, 2007. [3] F. B. Erim, “Recent analytical approaches to the analysis of biogenic amines in food samples,” TrAC - Trends in Analytical Chemistry, vol. 52. pp. 239–247, 2013. [4] J. L. Ordóñez, A. M. Troncoso, M. D. C. García-Parrilla, and R. M. Callejón, “Recent trends in the determination of biogenic amines in fermented beverages – A review,” Analytica Chimica Acta, vol. 939. pp. 10–25, 2016. [5] R. M. Elsanhoty and M. F. Ramadan, “Genetic screening of biogenic amines production capacity from some lactic acid bacteria strains,” Food Control, vol. 68, pp. 220–228, Oct. 2016.
Ključne besede: lactic bacteria, biogenic amines
Objavljeno v RUNG: 13.12.2018; Ogledov: 3370; Prenosov: 0
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3693.
Preliminarni rezultati študije mlečnokislinskih bakterij povezanih z vinom Teran
Lorena Butinar, Jelena Topic, prispevek na konferenci brez natisa

Ključne besede: Mlečnokislinske bakterije, teran, biogeni amini
Objavljeno v RUNG: 13.12.2018; Ogledov: 4295; Prenosov: 0
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3694.
Leteči verzi : letaki v starejši slovenski in španski književnosti
Barbara Pregelj, 2018, samostojni znanstveni sestavek ali poglavje v monografski publikaciji

Opis: Španska literarna veda letakom namenja precejšnjo pozornost, v slovenskem prostoru so bile na njih prvič natisnjene slovenske besede. V prispevku v primerjalni optiki starejše slovenske in španske književnosti letake obravnavam kot začetno obliko književnosti na prehodu med ustnim in pisnim. Predstavim tipologijo slovenskih letakov in osvetljujem kontekst, v katerem so ti v obeh literaturah nastajali.
Ključne besede: letak, ljudske pesmi, starejša književnost, tipologija letakov
Objavljeno v RUNG: 12.12.2018; Ogledov: 3070; Prenosov: 0
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3695.
Družbena tujost in latinskoameriška mladinska književnost
Barbara Pregelj, 2018, izvirni znanstveni članek

Ključne besede: mladinska književnost, latinskoameriška književnost, kartonarske založbe, založništvo, družbena angažiranost, María Teresa Andruetto
Objavljeno v RUNG: 12.12.2018; Ogledov: 3180; Prenosov: 0
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3696.
Motiviranje za branje in slovenski klasiki
Barbara Pregelj, 2018, izvirni znanstveni članek

Ključne besede: motiviranje za branje, bralnomotivacijske strategije, Montserrat Sarto, bralnomotivacijski projekti
Objavljeno v RUNG: 12.12.2018; Ogledov: 3337; Prenosov: 0
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3697.
Large-scale Cosmic-Ray Anisotropies above 4 EeV Measured by the Pierre Auger Observatory
A. Aab, Danilo Zavrtanik, 2018, izvirni znanstveni članek

Ključne besede: astrofizika osnovnih delcev, kozmični žarki, anizotropije, observatorij Pierre Auger
Objavljeno v RUNG: 12.12.2018; Ogledov: 3124; Prenosov: 0
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3698.
3699.
Confronting two biomolecular techniques to detect NRF2 gene polymorphism biomarkers
Pieranna Chiarella, Renata Sisto, Ario De Marco, 2018, izvirni znanstveni članek

Ključne besede: biomarkers, gene polymorphism, NRF2, oxidative stress, PCR, RFLP
Objavljeno v RUNG: 11.12.2018; Ogledov: 3861; Prenosov: 141
URL Povezava na celotno besedilo
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3700.
Science with e-ASTROGAM A space mission for MeV–GeV gamma-ray astrophysics
Gabrijela Zaharijas, 2018, izvirni znanstveni članek

Ključne besede: gamma-ray astrophysics, new astrophysical instruments
Objavljeno v RUNG: 11.12.2018; Ogledov: 2661; Prenosov: 0
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