Valdas Jakštas

ORCID: 0000-0001-7627-6263
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About
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Research Areas
  • Phytochemicals and Antioxidant Activities
  • Phytochemistry and Biological Activities
  • Essential Oils and Antimicrobial Activity
  • Natural Compound Pharmacology Studies
  • Medicinal plant effects and applications
  • Probiotics and Fermented Foods
  • Botanical Studies and Applications
  • Free Radicals and Antioxidants
  • Natural product bioactivities and synthesis
  • Natural Antidiabetic Agents Studies
  • Ginkgo biloba and Cashew Applications
  • Food Quality and Safety Studies
  • Biological Activity of Diterpenoids and Biflavonoids
  • Microbial Metabolites in Food Biotechnology
  • Botany and Plant Ecology Studies
  • Bee Products Chemical Analysis
  • Natural Products and Biological Research
  • Flowering Plant Growth and Cultivation
  • Tea Polyphenols and Effects
  • Phytochemical and Pharmacological Studies
  • Microencapsulation and Drying Processes
  • Fermentation and Sensory Analysis
  • Antiplatelet Therapy and Cardiovascular Diseases
  • Seed and Plant Biochemistry
  • Magnetic and Electromagnetic Effects

Lithuanian University of Health Sciences
2016-2025

Kaunas University of Technology
2006-2024

Pharmac
2007

Galenic preparations of German chamomile are used to treat mild skin diseases, inflammation, and spasms, they have also been reported anxiolytic sedative effects. The medicinal use is well known in ethnomedicine. After obtaining its galenic preparations, there lots waste left, so it expedient develop waste-free technologies. aims this study were gain knowledge the ethnomedical status past present, methods for preparing essential oils dry extracts from flowers using complex processing, reveal...

10.3390/plants13030350 article EN cc-by Plants 2024-01-24

The effects of seed treatment with cold plasma (2–7 min), vacuum (7 and electromagnetic field (5–15 min) on Echinacea purpurea germination performance are studied. All treatments induce faster but did not change the final percentage, except decrease evoked by treatment. plants grown from all groups treated seeds have larger height, develop more leaves, some increase root weight. content vitamin C phenolic acids in extracts plant leaves is substantially higher comparison to control, so that...

10.1002/ppap.201700059 article EN Plasma Processes and Polymers 2017-08-17

The aim of our study was to increase the extraction efficiency carvacrol, rosmarinic, oleanolic and ursolic acid from different species oregano herbs (Origanum onites L., Origanum vulgare spp. hirtum L.). Various methods (ultrasound-assisted, heat-reflux, continuous stirring, maceration, percolation) conditions (different solvent, material:solvent ratio, temperature, time) were used, active substances determined by HPLC. lowest content obtained percolation. During heat-reflux extraction,...

10.1080/14786419.2015.1038998 article EN Natural Product Research 2015-05-05

By-products from berries/fruits (B/F) and the dairy industry (DI) are an important environmental issue in many countries. In present study, concept of improvement antimicrobial activity lactic acid bacteria (LAB) combination with B/F (raspberries, blackcurrants, apples, rowanberries) DI by-products was analysed. Antimicrobial activities LAB (13 strains were estimated against 15 pathogenic strains) evaluated, whey substrate being used for selected highest showing cultivation.The broadest...

10.1002/jsfa.9625 article EN Journal of the Science of Food and Agriculture 2019-02-05

The aim of this study was to determine the effects pre-sowing seed treatment with cold plasma (CP) and an electromagnetic field (EMF) on agricultural performance two cultivars common buckwheat (Fagopyrum esculentum Moench)—‘VB Vokiai’ ‘VB Nojai’. For this, CP EMF germination, plant growth in field, photosynthetic efficiency, biomass production, yield, amount secondary metabolites minerals harvested seeds were estimated. Although percentage seedlings that emerged under conditions decreased by...

10.3390/app11104391 article EN cc-by Applied Sciences 2021-05-12

The aerial parts of Anthemis tinctoria L. and Angelica sylvestris the roots A. have been used as traditional anticancer remedies in Estonian ethnomedicine. aim this study was to investigate content essential oils (by gas chromatography) polyphenolic compounds (using two different methods high performance liquid chromatography-mass spectrometry (HPLC-MS)) both plant species, well vitro anti-cancer effects their methanolic extracts. average (n = 5 samples) yield 0.15%, 0.13%, 0.17%,...

10.3390/plants11070994 article EN cc-by Plants 2022-04-05

Fruit and leaf cuticular waxes are valuable source materials for the isolation of triterpenoids that can be applied as natural antioxidants anticancer agents. The present study aimed at semi-preparative fractionation from wax extracts Vaccinium vitis-idaea L. (lingonberry) leaves fruits evaluation their cytotoxic potential. Qualitative quantitative characterization obtained triterpenoid fractions was performed using HPLC-PDA method, followed by complementary analysis GC-MS. For each...

10.3390/antiox12020465 article EN cc-by Antioxidants 2023-02-12

Background/Objectives: Canadian goldenrod (Solidago canadensis L.) is one of the most widespread species genus Solidago from Asteraceae family. It has a rich composition biologically active compounds and traditionally used to address kidney, urinary tract, liver diseases. Previously, it was proven that S. extract obtained with 40% ethanol solution had promising anti-inflammatory hepatoprotective activity. Therefore, this selected for further formulation amino acids preparations 3D-printed...

10.20944/preprints202502.2331.v1 preprint EN 2025-03-02

Background/Objectives: The Canadian goldenrod (Solidago canadensis L.) is one of the most widespread species genus Solidago from Asteraceae family. It has a rich composition biologically active compounds and traditionally used to address kidney, urinary tract, liver diseases. Previously, it was proven that S. extract obtained with 40% ethanol solution had promising anti-inflammatory hepatoprotective activity. Therefore, this selected for further formulation amino acid preparations 3D-printed...

10.3390/pharmaceutics17040407 article EN cc-by Pharmaceutics 2025-03-24

Summary The aim of this study was to develop antimicrobial properties gummy candies based on bovine colostrum ( BC ), essential oils EO s), lactic acid bacteria LAB ) strains and their combinations. In addition, the heteropolysaccharide (agar), as a multifunctional polymer, used for preparation. activities , s C. reticulata L., Eugenia caryophyllata paradisi Thymus vulgaris Lactobacillus plantarum LUHS 135 paracasei 244) combinations against pathogenic Pseudomonas aeruginosa Proteus...

10.1111/ijfs.13701 article EN International Journal of Food Science & Technology 2017-12-07
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