Vesela I. Chalova

ORCID: 0000-0001-5139-5389
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About
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Research Areas
  • Proteins in Food Systems
  • Protein Hydrolysis and Bioactive Peptides
  • Salmonella and Campylobacter epidemiology
  • Phytase and its Applications
  • Food composition and properties
  • Animal Nutrition and Physiology
  • Phytochemicals and Antioxidant Activities
  • Essential Oils and Antimicrobial Activity
  • Vibrio bacteria research studies
  • Microencapsulation and Drying Processes
  • Listeria monocytogenes in Food Safety
  • bioluminescence and chemiluminescence research
  • Probiotics and Fermented Foods
  • Free Radicals and Antioxidants
  • Bacterial Genetics and Biotechnology
  • Amino Acid Enzymes and Metabolism
  • Viral gastroenteritis research and epidemiology
  • Microbial Metabolites in Food Biotechnology
  • Bacteriophages and microbial interactions
  • Muscle metabolism and nutrition
  • Pickering emulsions and particle stabilization
  • Advanced Biosensing Techniques and Applications
  • Meat and Animal Product Quality
  • Insect Pest Control Strategies
  • Plant Micronutrient Interactions and Effects

University of Food Technologies
2016-2025

North Carolina State University
2025

University of Arkansas at Fayetteville
2007-2012

Texas A&M University
2003-2010

Mitchell Institute
2007-2009

University of Illinois Urbana-Champaign
2009

Baylor College of Medicine
2008

United States Department of Agriculture
2008

Agricultural Research Service
2008

Seven citrus essential oils (EOs) were screened by disc diffusion assay for their antibacterial act against 11 serotypes/strains of Salmonella. The 3 most active selected to determine the minimal inhibitory concentration (MIC) same Orange terpenes, single-folded d-limonene, and orange essence terpenes all exhibited activity Salmonella spp. on assay. EOs stabilized in broth addition 0.15% (w/v) agar performance MIC tests. d-limonene both had MICs 1%. compound, from essence, produced an that...

10.1111/j.1750-3841.2008.00790.x article EN Journal of Food Science 2008-05-28

The objectives of this study were to screen activity citrus essential oil fractions (EOs) alone and in combination with organic acids against 2 species Listeria. Five EOs initially screened by disc diffusion assay for antibacterial activity. Cold pressed terpeneless Valencia orange (CP oil) had the strongest bacteriostatic (MIC) bactericidal (MBC) properties at 0.55% 1.67%, respectively. Four tested effectiveness Citric malic proved be most effective MBC 1.1% alone. Assays conducted...

10.1111/j.1750-3841.2009.01056.x article EN Journal of Food Science 2009-02-04

Molting is a natural process, which birds undergo to rejuvenate their reproductive organs. The US poultry egg production industry has used feed withdrawal effectively induce molt; however, susceptibility of Salmonella Enteritidis encouraged the development alternative methods. Previous research conducted in our laboratory showed that alfalfa effective at molt induction and provides equivalent postmolt numbers quality when compared with withdrawal. In attempt further increase efficacy diet...

10.3382/ps.2007-00166 article EN cc-by-nc-nd Poultry Science 2008-06-24

Rapeseed meal ethanol-wash solutes (EWS) are wastes generated from rapeseed as a pretreatment step to reduce the presence of antinutritional compounds. This study focused on employing and optimizing an ultrasound assisted extraction (UAE) antioxidant bioactive compounds EWS. The second aim was fortify oil with best extract obtained, optimize this process. Both optimizations were carried out Response Surface Methodology (RSM), considering combinations amplitude-time concentration–time...

10.1016/j.eti.2023.103081 article EN cc-by-nc-nd Environmental Technology & Innovation 2023-02-25

Beetroots are one of the primary sources betalains, nitrogenous pigments with anti-inflammatory and antioxidant properties. However, due to their chemical instability, betalains have limited use in food applications. This work investigated whether encapsulated chickpea protein could be stabilized delivered a shelf-stable format. Freeze-dried (CB-FD) spray-dried (CB-SD) protein-betalain particles isolate (6% w/v) were prepared. The encapsulation method affected particles' morphology, water...

10.3390/foods14020281 article EN cc-by Foods 2025-01-16

Internal compartmentalization of metals is an important metal tolerance mechanism in many organisms. In plants and fungi, sequestration into the vacuole a major detoxification for metals. Cation transport can be mediated by CAX (cation exchanger) transporters. The Arabidopsis thaliana AtCAX2 transporter was shown previously to Ca(2+), Cd(2+) Mn(2+). To assess conservation functional regulatory characteristics CAX2-like transporters higher plants, we have characterized orthologues from...

10.1042/bj20081814 article EN Biochemical Journal 2008-10-28

Due to increasing concerns about the development of antimicrobial resistance amongst pathogenic bacteria, alternative strategies have been sought that do not use antibiotics reduce bacteria from foods and patients. A natural compound has potent properties is citrus peel, which contains a variety essential oils inhibit growth or kill bacteria. In present study, seven citrus-based antimicrobials were evaluated for their ability pathogen Escherichia coli O157:H7. Zones inhibition E. O157:H7 by...

10.1089/fpd.2008.0124 article EN Foodborne Pathogens and Disease 2008-10-01

The objective of this in vitro study was to evaluate the effects combining a prebiotic with alfalfa on fermentation by laying hen cecal bacteria. Cecal contents from hens were diluted 1:3,000 concentration an anaerobic dilution solution and added serum tubes filled ground or layer ration without fructooligosaccharide (FOS) prebiotic. Samples processed hood, pressurized using pressure manifold, incubated at 37°C. Volatile fatty acid (VFA) lactic concentrations quantified 6 24 h substrate...

10.3382/ps.2007-00179 article EN cc-by-nc-nd Poultry Science 2008-06-24

Rapeseed meal is a by-product of oil production which primarily used in feed industry. The application the rapeseed as protein source food industry an alternative leads to better and more complete use this by-product. Biochemical characteristics industrially produced vary therefore, detailed analyses prior its necessary. commercial evaluated study contained high amount (39.86%) low residual total fats (2.30%). It was characterized with levels glucosinolates (12.69 ± 0.18 μmol/g) phenols...

10.1016/j.aaspro.2016.09.009 article EN cc-by-nc-nd Agriculture and Agricultural Science Procedia 2016-01-01

The solubility of plant protein isolates is a key determinant their potential application. Two (PI) from ethanol-treated industrial rapeseed meal, PI10.5-2.5 and PI2.5-8.5, were prepared by sequential isoelectric precipitation alkali-extracted proteins (pH 12) starting pH 10.5 to 2.5 or 8.5, respectively. Biochemical analyses revealed that PI2.5-8.5 contained higher amount crude (72.84%) than (68.67%). In the same isolate, level total phenols (0.71%) was almost two-fold in (0.42%). No...

10.3390/foods9060703 article EN cc-by Foods 2020-06-01

The capabilities of selected strains from genera Lactobacillus and Bifidobacterium to produce extracellular bioactive compounds with antimutagenic properties against benzo[a]pyrene (BaP) sodium azide (SA) were tested as a function growth phase. bacterial supernatants exponential stationary phases characterized different patterns activity the two mutagens. All lactobacilli exhibited either no effect or low antimutagenicity BaP during growth. Higher activities observed in phase SA well. An...

10.1080/03601230701795262 article EN Journal of Environmental Science and Health Part B 2008-02-01

Abstract BACKGROUND: Due to their low solubility in water, oil‐based bioactive compounds require dispersion a surface‐active agent or appropriate solvents ensure maximum contact with microorganisms. These combinations, however, may change physical and/or chemical characteristics and consequently alter the desired functionality. The objective of this study was determine impact selected dispersing agents, ethanol, dimethyl sulfoxide (DMSO), Tween‐80, on cold‐pressed terpeneless (CPT) Valencia...

10.1002/jsfa.3897 article EN Journal of the Science of Food and Agriculture 2010-02-15

Protein-rich products, prepared from industrial rapeseed meal, have the potential for versatile applications in food-, feed-, and nutraceutical industries. The aim of study was to characterize biochemical composition two protein-rich products obtained industrially produced meal. Protein isolate (PI) acid soluble protein (ASP) were by alkaline extraction (pH 12.0) followed isoelectric precipitation 4.5). Biochemical analyses revealed that PI contained a high amount (86.9%), while ASP had...

10.9755/ejfa.2016-11-1760 article EN cc-by Emirates Journal of Food and Agriculture 2017-01-01

The rose essential oil industry generates large quantities of solid byproducts yearly. These by-products, usually discarded, could yield valuable substances, such as pectic polysaccharides, widely used in the food jelling agents. Seven industrial by-products were investigated a source polysaccharides: four samples resulted from treatment Rosa damascena, two alba, and one centifolia. Three steam-water distillation, CO2-supercritical extraction, after extraction with hexane...

10.3390/foods13020270 article EN cc-by Foods 2024-01-15

In animal diets optimal amino acid quantities and balance among acids is of great nutritional importance. Essential deficiencies have negative impacts on physiology, most often expressed in sub-optimal body weight gains. Over supplementation with costly can increase the nitrogen emissions from animals. Although vivo assays for quantification bioavailability are well established, Escherichia coli-based bioassays viable potential alternatives terms accuracy, cost, time input. E. coli inhabits...

10.3390/s90907038 article EN cc-by Sensors 2009-09-04

The influence of potassium fertilizer source (K2SO4 and KCl) rates on potato tuber quality parameters under pot field experimental conditions were studied. experiment included high rate fertilizers providing 600 mg K2O kg-1 soil from both sources, studded at four varieties. two - 100 200 kg ha-1. dry matter content in tubers the plants was highest for controls three studied varieties 19.78% "Louisiana"; 17.16 "Riviera" 17.26% "Hussar". (20.98%) observed variant K200 (K2SO4). For all variants...

10.1016/j.aaspro.2016.09.010 article EN cc-by-nc-nd Agriculture and Agricultural Science Procedia 2016-01-01
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