Irina Tanuwidjaja

• PhD
• PostDoc Position at University of Zagreb Faculty of Agriculture (AGR)

Svježe voće i povrće nastavlja s biološkom aktivnosti i nakon berbe, što rezultira kontinuiranim gubitkom vode i otopljenih tvari te izmjenom plinova s okolinom. Primjena jestivih omotača nakon berbe pokazala se kao uspješan održivi tretman zaštite voća i povrća u cilju smanjenja gubitka vode, očuvanju svježine, nutritivne kvalitete i senzorskih sv...

Tradicionalne, spontano fermentirane kobasice od mesa divljači zauzimaju važno mjesto u gastronomiji različitih kultura i naroda u Europi i svijetu. U Republici Hrvatskoj proizvode se na brojnim malim obiteljskim gospodarstvima, prateći tradicionalne recepture i postupke, te su prepoznate i cijenjene kao visoko kvalitetan proizvod specifičnih senzo...

Cilj ovog rada bio je odrediti ukupan broj mikroorganizama te zastupljenost enterobakterija u rizosferi ekološki uzgojene zelene salate (Lactuca sativa L.). Ukupno je sakupljeno 18 uzoraka rizosfernog tla tri sorti zelene salate (kristalka, puterica i hrastov list) s područja Varaždinske (OPG1) i Istarske županije (OPG2). Uzorci su sakupljeni u lje...

Zbog širokog spektra aktivnosti, prirodnog podrijetla, utvrđene povijesti sigurnog korištenja i dokazane učinkovitosti, sve se više istražuje primjena eteričnih ulja kao antimikrobnih sredstava. Općenito, antimikrobno djelovanje eteričnih ulja određeno je sastavom i udjelom pojedinačnih spojeva, a ovisi i o vrsti mikroorganizama čiji se rast nastoj...

Due to numerous bioactive constituents, both bee pollen (BP) and bee bread (BB) represent valuable food supplements. The transformation of BP into BB is a complex biochemical in-hive process that enables the preservation of the pollen’s nutritional value. The aim of this study was to determine the depth of the honeycomb cells in which bees store po...

Ozon is considered an environmentally friendly, low-cost antimicrobial treatment and an effective alternative to chemical pesticides. Ozonated water in the form of droplets and mist has been used in two concentrations (4 and 2 mg/L) against three biomasses (10², 10⁴, and 10⁶ CFU/mL) of phytopathogenic bacteria Erwinia amylovora, Pseudomonas syringa...

The incidence of antibiotic resistance in pathogenic bacteria has become an alarming clinical and social problem. Therefore, the demand for alternative antimicrobial compounds has increased. In this study, a chemical profile of honey bee (Apis mellifera L.) venom (HBV) has been determined by HPLC and FTIR-ATR spectroscopy, and tested for antibacter...

Nutrient turnover in soils is strongly driven by soil properties, including clay mineral composition. One main nutrient is phosphorus (P), which is known to be easily immobilized in soil. Therefore, the specific surface characteristics of clay minerals might substantially influence P availability in soil and thus the microbial strategies for access...

As fermentation is an integral feature of both, dry sausage and cheese production, this has led to the evaluation of bacterial cultures Lactococcus lactis ssp. cremoris (LL8307) and Enterococcus durans (ED0207) originally isolated from artisanal Croatian hard type cheese to diversify the range of flavours of dry fermented sausages and to increase t...

Alginate microspheres loaded with two fermentation active agents, calcium cations and strain LS0296 identified as Lactobacillus sakei, have been prepared and characterized. The role of calcium cation is twofold, it acts as gelling cation and as fermentation active agent. Encapsulation and the presence of calcium ions in the same compartment do not...

This study addresses the application of native, multiple strain starter cultures for standardization of game meat sausages production. The designed starter cultures consisting of two indigenous Lactobacillus sakei and one Leuconostoc mesenteroides strains. These strains were used in both, the encapsulated and non-encapsulated form, in the game meat...

In recent years, fish invasion has become one of the main reasons for the decline of native fish stocks. Topmouth gudgeon Pseudorasbora parva (Temminck & Schlegel, 1846) is a small fish native to Eastern Asia and introduced to Europe as well as to Croatia. It typically inhabits small ponds and ditches, but also larger lakes and streams. P.parva is...

Bacterial communities associated with the ripening process in artisanal wild boar and deer meat sausages were investigated by molecular barcoding using the 16S rRNA gene as a marker. A core microbiota shared by 83.54% of the samples indicated remarkable level of Lactobacillus sakei and Lactobacillus curvatus, accounting for 20.55% in initial and 70...

The diversity of gut microbiota is crucial for many host functions including digestion, nutrition, disease resistance and immunity. Fish gut microbiota is more complex than was previously believed and is characterized by a great bacterial diversity. However, the role of many of them is still unclear. The gut microbiota of aquatic organisms is influ...

In this study, prevalence, biotechnological and safety profi les of 588 Enterococcus isolates isolated from raw milk and Istrian cheese during diff erent stages of ripening were analyzed. Despite the low and variable presence of enterococci in milk ((3.65±2.93) log CFU/mL), highly comparable enterococcal populations were established aft er 30 days...

Our understanding of the interactions between minerals, organic matter, and microorganisms at so-called biogeochemical interfaces in soil is still hampered by the inherent complexity of these systems. Artificial soil maturation experiments can help to bridge a gap in complexity between simple abiotic sorption experiments and larger-scale field expe...

Cilj ovog rada je utvrditi neke od tehnoloških karakteristika sojeva BMK izoliranih iz tradicionalnih hrvatskih sireva prije njihove selekcije i primjene kao mikrobnih kultura u proizvodnji kobasica od divljači. Istraživani sojevi Enterococcus durans i Lactococcus lactis subsp. cremoris su pokazali antimikrobno djelovanje prema Bacillus cereus, Bac...

The interaction between minerals and organic matter (OM) is a key to the turnover of OM in soils. In particular, clay minerals, iron oxides and charcoal are considered as important constituents affecting the sequestration of carbon (C) and nitrogen (N). Here, we incubated pre-produced artificial soils (842 days) and a natural soil (Ap, Luvisol) wit...