Damir Oros - Academia.edu (original) (raw)

Papers by Damir Oros

Microorganisms

An increasing amount of evidence implies that native microbiota is a constituent part of a health... more An increasing amount of evidence implies that native microbiota is a constituent part of a healthy urinary tract (UT), making it an ecosystem on its own. What is still not clear is whether the origin of the urinary microbial community is the indirect consequence of the more abundant gut microbiota or a more distinct separation exists between these two systems. Another area of uncertainty is the existence of a link between the shifts in UT microbial composition and both the onset and persistence of cystitis symptoms. Cystitis is one of the most common reasons for antimicrobial drugs prescriptions in primary and secondary care and an important contributor to the problem of antimicrobial resistance. Despite this fact, we still have trouble distinguishing whether the primary cause of the majority of cystitis cases is a single pathogen overgrowth or a systemic disorder affecting the entire urinary microbiota. There is an increasing trend in studies monitoring changes and dynamics of UT m...

Cilj ovog doktorskog rada bio je usporediti ekstrakciju i istiskivanje plinom (eng. gas stripping... more Cilj ovog doktorskog rada bio je usporediti ekstrakciju i istiskivanje plinom (eng. gas stripping) kao metode izdvajanja etanola iz fermentirane podlo

SSRN Electronic Journal

This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY

Knjiga Sažetaka, Radionica u sklopu projekta "Primjena mikroreaktora u praćenju antioksidacijske aktivnosti samoniklog bilja (MICRO-AA), 2016

Frontiers in Marine Science, 2022

Seawater is an environment in which numerous microorganisms have evolved, some with a great poten... more Seawater is an environment in which numerous microorganisms have evolved, some with a great potential for biotechnology. In recent years, many scientists have moved away from the assumption that the origin of life was in pools of water, and instead propose that life on Earth probably originated in accumulations of warm, nutrient-rich mud. This mud, also called peloid is a rich source of organisms that, due to their adaptation to this unique environment, produce a wide variety of primary and secondary metabolites with numerous and diverse activities, including anti-cancer, anti-inflammatory, antiviral, and immunomodulatory ones. In this research, two questions were addressed using collected samples of a peloid with demonstrated healing properties. Firstly biodiversity in this ecological niche was explored in order to assess microbial communities present and secondly natural products were screened for in order to assess whether predicted activities could be linked to healing propertie...

Glasnik zaštite bilja, 2021

Analizirani uzorci vina sorte Rajnski rizling iz vinogorja Plešivica-Okić proizvedeni su tijekom ... more Analizirani uzorci vina sorte Rajnski rizling iz vinogorja Plešivica-Okić proizvedeni su tijekom tri uzastopne godine (2009., 2010. i 2011.) na jednom obiteljskom gospodarstvu. Koncentracije alkohola, ukupnih i hlapljivih kiselina, ukupnog SO2 , glicerola i reducirajučih šećera u analiziranim vinima u skladu su sa zakonskim propisima. Uočen je izražen utjecaj klimatskih uvjeta na kemijski sastav analiziranih vina.

Additional file 3: Excel tables.

Additional file 2: Table S1. General information about patients. Table S2. Results of conventiona... more Additional file 2: Table S1. General information about patients. Table S2. Results of conventional urine culture and urine dipstick analysis for 16 urine samples. Table S3. Uropathogenic bacteria in urine samples. Table S4. Summary reports of identified bacterial proteins for each urine sample sorted by "MASCOT summa score". Table S5. The comparative view of urine culture, proteomics and genomic results. Table S6. Identified human proteins ranked by MASCOT score for each urine sample.

Additional file 1: Figure S1. Experimental workflow for the identification of uropathogen from a ... more Additional file 1: Figure S1. Experimental workflow for the identification of uropathogen from a native urine sample. Figure S2. Images of 16 urine specimens. Figure S3. Protein content of each fraction as a percentage of the total protein. Figure S4. Cumulative number of bacterial and human proteins for each sample per fraction.

Hrvatski Časopis za Prehrambenu Tehnologiju Biotehnologiju i Nutricionizam - Croatian Journal of Food Technology, Biotechnology and Nutrition, 2016

Analizirano je pet vina Škrlet proizvedenih od istoimene autohtone sorte grožđa u Volodersko-Ivan... more Analizirano je pet vina Škrlet proizvedenih od istoimene autohtone sorte grožđa u Volodersko-Ivanićgradskom vinogorju (podregija Moslavina) i Petrinjskom vinogorju (podregija Pokuplje). Primjenom standardnih metoda analize određene su koncentracije reducirajućih šećera, ukupnih kiselina, hlapljivih kiselina, ekstrakta te slobodnog, vezanog i ukupnog SO 2. Volumni udio etanola određen je primjenom dviju metoda-tekućinskom kromatografijom visoke djelotvornosti (HPLC) i plinskom kromatografijom (GC). Za određivanje udjela jabučne kiseline, mliječne kiseline i glicerola primijenjena je HPLC metoda. Većina uzoraka zadovoljila je Pravilnikom propisane kriterije za kvalitetna vina, dok je jedan odstupao s obzirom na koncentracije glicerola i ukupnih kiselina.

Analizirano je pet vina Skrlet proizvedenih od istoimene autohtone sorte grožđa u Volodersko-Ivan... more Analizirano je pet vina Skrlet proizvedenih od istoimene autohtone sorte grožđa u Volodersko-Ivanicgradskom vinogorju (podregija Moslavina) i Petrinjskom vinogorju (podregija Pokuplje). Primjenom standardnih metoda analize određene su koncentracije reducirajucih secera, ukupnih kiselina, hlapljivih kiselina, ekstrakta te slobodnog, vezanog i ukupnog SO2. Volumni udio etanola određen je primjenom dviju metoda - tekucinskom kromatografijom visoke djelotvornosti (HPLC) i plinskom kromatografijom (GC). Za određivanje udjela jabucne kiseline, mlijecne kiseline i glicerola primijenjena je HPLC metoda. Vecina uzoraka zadovoljila je Pravilnikom propisane kriterije za kvalitetna vina, dok je jedan odstupao s obzirom na koncentracije glicerola i ukupnih kiselina.

Summary Th e aim of this paper was to determine the enological traits of two commercial yeasts (F... more Summary Th e aim of this paper was to determine the enological traits of two commercial yeasts (Fermol Rouge® and Fermol Mediterranee®) in a small scale and to evaluate the possibility of their application in commercial production of blackberry wine. Fermentation activity was monitored by measuring CO 2 evolution and CO 2 production rate during microfermentation of blackberry juice performed at 23oC. Blackberry wines produced by two diff erent yeasts were analyzed in order to compare their composition diff erences. Fermentations were carried on to complete sugar consumption by both yeast strains. Levels of volatile acids formed by the two yeasts were signifi cantly diff erent and diff erences in concentrations of residual sugars, malic acid, lactic acid and pH-value were highly signifi cant. Th ere were no signifi cant diff erences between concentrations of ethanol, total acids and glycerol in blackberry wines produced by both yeasts. Chemical composition of the produced blackberry ...

Microbiota plays an increasingly important role for the wellbeing of the host. It has been correl... more Microbiota plays an increasingly important role for the wellbeing of the host. It has been correlated with a plethora of conditions, raging form gastr

Sugar beet pulp (SBP) was hydrolyzed with combinations of commercially available fungal enzymes (... more Sugar beet pulp (SBP) was hydrolyzed with combinations of commercially available fungal enzymes (Ultrazym AFP-L, Viscozyme L, Pectinase and Cellulase) and wood-rotting fungi (Trametes multicolor, Sclerotium rolfsii and Neurospora crassa) lignocellulolytic enzymes. Among the tested enzymes, the plant pathogen Sclerotium rolfsii was found to be the best-performing fungus and it was chosen for further research. Current research activities were focused on the optimization of the hydrolytic process using a factorial design approach and response surface methodology (RSM). The effect of various experimental parameters and their interactions with each other was evaluated using those methods and consequently the optimum conditions were accomplished. The set-up parameters were the enzyme loads (1, 2, 3, 4 μL total enzymes / mg SBP), pH (3, 4, 5, 6, 7) and temperature (20, 30, 40, 50 oC). Using statistical design methodology, it was observed dramatically reduce of the required enzyme loads to only 2 μL total enzymes / g SBP, at the optimal pH and temperature value. Optimal parameters of hydrolytic process would apply in the further investigation of SBP hydrolysis to obtain more economical process for biofuels, biopolymers or biochemicals production.