Liliana Petculescu

Dr. Liliana Petculescu

orcid

Research Focus & Metrics

Academic Career Length

6Years (2021-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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Marioara Nicoleta FilimonMarioara Nicoleta Filimon
Marioara Nicoleta Filimon
ICIon Valeriu Caraba
Ion Valeriu Caraba
Roxana PopescuRoxana Popescu
Roxana Popescu
DGDumitrescu Gabi
Dumitrescu Gabi
DVDoina Verdes
Doina Verdes
ASAdrian Sinitean
Adrian Sinitean
Surface soil samples were collected near the Open Pit Bor (S1) and Open Pit Cerovo (S2), a grassland along the Borska Reka River (S3) and an unpolluted garden near Slatina village (reference site). Spontaneous plants (dandelion, nettle, coltsfoot, and creeping buttercup) and vegetables (onion, garlic, carrot, parsley, celery, potatoes, dill, and sorrel) were obtained from the former three sites and the reference site, respectively. The samples were analyzed for Zn, Cu, Fe, Mn, and Pb via FAAS. Pollution indices indicated low-to-moderate soil contamination at sites S1, S2, and S3. Cu was the main contaminant of environmental concern, being above the maximum admitted concentration at site S1. Metal levels in spontaneous plants were below phytotoxic levels. Cu content of leafy vegetables and celery roots and Pb content of most vegetables were not safe for human consumption. Metal concentrations tended to be significantly lower in plants than in soils, with only Cu occurring at significantly elevated levels in celery roots and sorrel leaves. Non-carcinogenic risk assessment showed that consumption of carrot roots and especially celery roots grown on unpolluted soils from the Bor area might pose long-term health risks for females and males, with the main contributors being Cu and Fe.

17 April 2024 in Applied Sciences
Verified
Journal Article
Open access
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AIAna-Maria-Cristina Imbrea
Ana-Maria-Cristina Imbrea
Igori BaltaIgori Balta
Igori Balta
DGDumitrescu Gabi
Dumitrescu Gabi
DMDavid McCleery
David McCleery
IPIoan Pet
Ioan Pet
LPLiliana Petculescu
Liliana Petculescu
This comprehensive review investigates the specific impact of the foodborne pathogen Campylobacter jejuni (C. jejuni) on gastrointestinal health, focusing on its connection to post-infectious irritable bowel syndrome (PI-IBS). This review examines the pathogen’s pathophysiology, clinical implications and epidemiological trends using recent research and data to highlight its prevalence and association with PI-IBS. A detailed literature analysis synthesizes current research to illuminate Campylobacter’s long-lasting effects on gut microbiota and intestinal function. It provides a detailed analysis of the literature to shed light on C. jejuni’s long-term impact on gut microbiota and intestinal function. The findings suggest the need for multifaceted prevention and treatment approaches considering individual, microbial and epidemiological factors, thus contributing to a more nuanced understanding of PI-IBS following C. jejuni infection.

Verified
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LSLavinia Stef
Lavinia Stef
IPIoan Pet
Ioan Pet
Cosmin Alin PopescuCosmin Alin Popescu
Cosmin Alin Popescu
DGDumitrescu Gabi
Dumitrescu Gabi
LPLiliana Petculescu
Liliana Petculescu
Igori BaltaIgori Balta
Igori Balta
Some Vibrio parahaemolyticus strains cause translucent post-larvae disease (VpTPD), leading to significant economic losses in shrimp farming. We aimed to identify whether a mixture of natural antimicrobials, AuraAqua (Aq), can protect white-leg shrimp (Penaeus vannamei) against the lethal effects of VpTPD and to understand its biological mode of action. Herein, we demonstrate that Aq, an antimicrobial mixture composed of a blend of organic acids, citrus, and olive extracts, suppressed VpTPD virulence at sub-inhibitory concentrations and conferred robust protection to shrimp. The minimum inhibitory and bactericidal concentrations against the VpTPD isolate were at 0.05% and 0.2%, respectively. At 0.05–0.1%, Aq reduced bacterial growth and downregulated six major virulence genes (vhvp-1, vhvp-2, vhvp-3, pirAVp, pirBVp, pirABVp), while leaving metabolic ldh expression unaltered. Parallel in vitro assays revealed diminished adhesion of VpTPD to primary shrimp gut and hepatopancreas epithelial cells and a ≈50% reduction in infection-induced extracellular H2O2, indicating an antioxidant effect. The treatment also triggered a time-dependent surge in extracellular alkaline phosphatase (ALP) activity, consistent with membrane permeabilization. In vivo, a challenge of post-larvae with 104 CFU/mL VpTPD resulted in 91% mortality after 45 h; co-treatment with 0.1% and 0.2% Aq reduced mortality to ≈12% and ≈6%, respectively, while 1% Aq achieved ≈98% survival. The clinical protection test confirmed that 0.1% Aq preserved high survival across four pathogen inocula (101–104 CFU/mL). Conclusively, Aq destabilized the pathogen and therefore transcriptionally silenced multiple virulence determinants, translating into significant in-pond protection for controlling VpTPD for shrimp aquaculture.

12 February 2026 in Foods
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DMDiana Marcu
Diana Marcu
Igori BaltaIgori Balta
Igori Balta
MHMichael Harvey
Michael Harvey
DMDavid McCleery
David McCleery
Adela MarcuAdela Marcu
Adela Marcu
Nicolae CorcionivoschiNicolae Corcionivoschi
Nicolae Corcionivoschi
Background: Salmonella enterica remains a leading cause of foodborne illness worldwide despite decades of advances in surveillance and control. Traditional interventions have targeted specific points in the food chain, yet recurrent outbreaks show that Salmonella exploits system-wide gaps and inconsistencies. Methods: This review synthesises recent evidence from epidemiology, experimental microbiology, and regulatory practice to evaluate how management decisions, from farm through processing, influence Salmonella risk in livestock-derived foods. Results: Poultry, pig, and cattle farms employ targeted measures, including rodent control, litter management, batch rearing, and secure feed storage, to reduce contamination. The greatest reductions in Salmonella prevalence occur when these measures are embedded in coherent farm-to-fork programmes. Future gains are likely to come less from novel interventions and more from rigorous implementation, integration, and the validation of existing tools, supported by high-resolution surveillance (including whole-genome sequencing) and prevention-focused management systems. Artificial intelligence can enhance control through real-time surveillance, predictive risk modelling, and targeted interventions informed by diverse farm data. Conclusions: Sustained progress in Salmonella control will depend on rigorously applying existing interventions, supported by high-resolution surveillance and prevention-focused management. Carefully governed AI can enhance real-time monitoring and risk prediction, but its value hinges on addressing data, cost, and regulatory challenges.

22 October 2025 in Foods
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ANAlexandru Nan
Alexandru Nan
MMMihai Mitulețu
Mihai Mitulețu
DGDumitrescu Gabi
Dumitrescu Gabi
ICIon Valeriu Caraba
Ion Valeriu Caraba
IPIoan Pet
Ioan Pet
Marioara Nicoleta FilimonMarioara Nicoleta Filimon
Marioara Nicoleta Filimon
Honey is a traditional remedy, with its biologically active compounds being responsible for its properties. The aim of this study was to characterize linden honey from a physico-chemical point of view as well as its antimicrobial and antibiofilm potential. Two samples of linden honey with different origins were subjected to physico-chemical analyses, including the determination of water content, impurities, dry matter, acidity, pH, reducing sugar content, total phenol content, flavonoids, antioxidant potency by DPPH, and mineral content. The microbiological analysis involved determining the inhibition rates of microbial growth and the antibiotic capacity of linden honey against ten standardized bacterial strains and five bacterial strains isolated from patients. The analyzed linden honey can be characterized based on physico-chemical parameters as having a slightly increased water content, moderate acidity, rich in antioxidants, and a balanced pH. The average concentrations of macroelements and microelements in the honey samples showed that potassium was the dominant mineral element, followed by calcium and magnesium. The heavy metal content was consistent with European and international standards. The chemical content of linden honey influenced its antimicrobial and antibiofilm potential. In Gram-positive bacteria, inhibition rates were between 70.83 and 91.28% (sample A) and 71.14–90.16% (sample B) when applying concentration c1. For Gram-negative bacteria, values ranged between 63.91 and 78.30% (sample A) and 46.56–90.92% (sample B) at concentration c1. In bacterial strains isolated from patients, the inhibition rate values were between 75.42 and 85.69% (sample A) and 78.31–86.22% (sample B) when applying concentration c1. The antimicrobial and antibiofilm potential was highlighted in all bacterial strains studied, with differences occurring depending on the concentration of honey tested and the type of bacterial strain studied.