Search results for " Marx."
showing 10 items of 90 documents
Valorisation of Dairy Wastes Through Kefir Grain Production
2019
The main aim of this work was to investigate on kefir grains (KGs) increase using different dairy by-products. To this purpose, whey and deproteinized whey from cow, goat and sheep milk were compared to the pasteurized milk of the corresponding animal species. Each substrate was inoculated with 3% (w/v) of KGs cultivated in ultra-high temperature cow milk and evalu- ated for pH decrease, total titratable acidity increase and development of lactic acid bacteria (LAB) and yeasts released in the matrices after 24 h incubation at three different temperatures (20, 25 and 30 °C). The genotypic characterization of the dominating microbial populations resulted in the identification of two LAB belon…
Use of Kluyveromyces marxianus to Increase Free Monoterpenes and Aliphatic Esters in White Wines
2021
An increasing interest in novel wine productions is focused on non-Saccharomyces yeasts due to their potential in improving sensory profiles. Although Kluyveromyces marxianus has been originally isolated from grapes and its enzymatic activities are used in oenology, rarely it has been used as co-starter. The K. marxianus Km L2009 strain has been characterized here and selected as a co-starter both at laboratory- and winery-scale fermentation. The Km L2009 strain showed growth of up to 40 (mg/L) of sulfites and 6% (v/v) of ethanol. Gas chromatographic analysis demonstrates that wines produced by mixed fermentation contain remarkably higher quantities of free monoterpenes and aliphatic esters…
Optimization of Synthetic Media Composition for Kluyveromyces marxianus Fed-Batch Cultivation
2021
The Kluyveromyces marxianus yeast recently has gained considerable attention due to its applicability in high-value-added product manufacturing. In order to intensify the biosynthesis rate of a target product, reaching high biomass concentrations in the reaction medium is mandatory. Fed-batch processes are an attractive and efficient way how to achieve high cell densities. However, depending on the physiology of the particular microbial strain, an optimal media composition should be used to avoid by-product synthesis and, subsequently, a decrease in overall process effi-ciency. Thus, the aim of the present study was to optimise the synthetic growth medium and feeding solution compositions (…
Isolation, identification and oenological characterization of non-Saccharomyces yeasts in a Mediterranean island
2016
UNLABELLED We isolated, identified and characterized yeast strains from grapes, and their fermented musts, sampled in the small island of Linosa, where there are no wineries and therefore the possibility of territory contamination by industrial strains is minimal. By traditional culture-dependent methods, we isolated 3805 colonies, distinguished by molecular methods in 17 different species. Five hundred and forty-four isolates were analysed for the main oenological characteristics such as fermentative vigour with and without sulphites, sugar consumption and production of alcohol, volatile acidity, hydrogen sulphide, glycerol and β-glucosidase. This analysis identified Kluyveromyces marxianu…
Probiotic yeast Kluyveromyces marxianus CIDCA 8154 shows anti-inflammatory and anti-oxidative stress properties in in vivo models.
2015
Inflammatory bowel diseases (IBDs) are complex affections with increasing incidence worldwide. Multiple factors are involved in the development and maintenance of the symptoms including enhanced oxidative stress in intestinal mucosa. The conventional therapeutic approaches for IBDs are based on the use anti-inflammatory drugs with important collateral effects and partial efficacy. In the present work we tested the anti-inflammatory capacity of Kluyveromyces marxianus CIDCA 8154 in different models. In vitro, we showed that the pretreatment of epithelial cells with the yeast reduce the levels of intracellular reactive oxygen species. Furthermore, in a murine model of trinitro benzene sulfon…
La investigación marxista hoy. Un balance sobrelas temáticas y problemas teóricos en torno al pensamiento y obra de Marx en su 200 aniversario
2018
La sociedad poscapitalista en Marx. Reflexiones sobre la 'Crítica del Programa de Gotha'
2018
2-feniletanola biosintēze ar netradicionālo raugu Kluyveromyces marxianus
2016
Bakalaura darbā mērķis bija pārbaudīt dažādu Kluyveromyces marxianus celmu un fermentācijas apstākļu (L-fenilalanīna, temperatūras, aerācijas) ietekmi uz 2-feniletanola producēšanu. Darbā tika konstatēts, ka L-fenilalanīna pievienošana barotnei būtiski ietekmē 2-feniletanola iznākumu. Tika noteikts, ka optimālie apstākļi 2-feniletanola producēšanai ir glikozes barotne ar 1% L-fenilalanīnu, 150 rpm aerācija un +30°C temperatūra. No darbā pētītajiem pieciem celmiem optimālais 2-feniletanola producēšanai ir K. marxianus DSM 5422, to audzējot uz 10% glikozes barotnes ar 1% L-fenilalanīnu pie +30°C ar 150 rpm aerāciju. Tika noteikts, ka K. marxianus celmi DSM 5422, DSM 5418 un DSM 4906 spēj izma…
Las raìces intelectuales de la crisis del marxismo en la interpretaciòn de Augusto Del Noce
2022
In the last thirty years, that is since the end of the Cold War, it has occurred a singular phenomenon in the democratic societies: several traditional communist parties have left the old Marxist ideology, by maintaining many aspects of the liberal one (primacy of freedom on equality, free market...) giving up their classical revolutionary calling. My thesis is that the italian philosopher Augusto Del Noce has given one of the most remarkable interpretations both of the historical and theoretical collapse of Marxism and of this paradoxical embrace between the ex-communist parties and a kind of liberal individualism.
Prognozēšanas modeļu pielietošana Kluyveromyces marxianus fermentācijas procesam
2019
Prognozēšanas modeļu pielietošana Kluyveromyces marxianus fermentācijas procesam. Gurčinska A., zinātniskie vadītāji: Mg.sc.ing. Dubencovs. K., Asoc. prof., Dr. chem. Vaivars G., bakalaura darbs, 47 lappuses, 25 attēli, 9 tabulas, 42 literatūras avoti. Latviešu valodā. Bakalaura darbā tika apkopota informācija no zinātniskām publikācijām par biotehnoloģijas procesu galvenajiem principiem un to pielietošanu produktu ieguvē. Minēta informācija tika apstrādātā un svarīgākie aspekti tika ņemti vērā, noteicot optimālos fermentācijas procesa nosacījumus un pielāgojot mikroorganismu augšanas prognozēšanas modeli (modeļa koeficientus). Eksperimentālajā daļā, tika apkopoti rezultāti no vairākiem Klu…