A5080116147- Berry genetics and cultivation research
- Plant Physiology and Cultivation Studies
- Ruminant Nutrition and Digestive Physiology
- Horticultural and Viticultural Research
- Phytochemicals and Antioxidant Activities
- Growth and nutrition in plants
- Agronomic Practices and Intercropping Systems
- Agriculture, Plant Science, Crop Management
- Crop Yield and Soil Fertility
- Postharvest Quality and Shelf Life Management
- Plant Pathogens and Fungal Diseases
- Microbial Metabolites in Food Biotechnology
- Food Quality and Safety Studies
- Phytase and its Applications
- Genetic and phenotypic traits in livestock
- Fermentation and Sensory Analysis
- Bee Products Chemical Analysis
- Fungal Biology and Applications
- Agriculture and Biological Studies
- Agricultural Productivity and Crop Improvement
- Botany and Plant Ecology Studies
- Reproductive Physiology in Livestock
- Seed and Plant Biochemistry
- Mycorrhizal Fungi and Plant Interactions
- Phase Equilibria and Thermodynamics
Estonian University of Life Sciences
2012-2024
University of Tartu
2020
Horticultural Research Institute
2013
The effects of commercial enzymes (pectinases, cellulases, beta-1-3-glucanases, and pectin lyases) on the recovery anthocyanins polyphenols from blackcurrant press cake were studied considering two solid:solvent ratios (1:10 1:4 w/v). β-glucanase enabled highest total phenolic content - 1142 mg/100 g, extraction was similar using all (∼400 g). use cellulases pectinases enhanced antioxidants (DPPH 1080 g; CUPRAC 3697 freeze-dried extracts presented antioxidant potential (CUPRAC, DPPH), which...
The wine industry generates large quantities of by-products each year. Therefore, this work aimed to isolate and evaluate the oil protein fractions Japanese quince (Chaenomeles japonica, JQ) press residue, offering a partial utilization valuable bioactive compounds by-products. To study JQ extract yield, composition oxidation stability, we modified co-solvent during supercritical CO2 (SC-CO2) extraction by adding different ethanol content. remaining defatted material was used for isolation...
Polli Horticultural Research Centre (58°7′N;25°32′E) in Estonia has focused on selecting cultivars with high productivity and suitable to use local climatic conditions since 1945. Besides important agronomic characteristics, more attention bee
It is important to find plant materials that can inhibit the growth of Listeria monocytogenes and other food-spoiling bacteria both in vitro situ. The aim study was compare antibacterial antioxidative activity selected plant-ethanol infusions: leaves berries blackcurrant (Ribes nigrum L.), chokeberry (Aronia melanocarpa (Michx.) Elliott) blue honeysuckle (Lonicera caerulea L. var. edulis); petioles dark light roots garden rhubarb (Rheum rhaponticum L.) for potential use food matrices as...
This article presents a method that efficiently enables us to identify differences in the composition of water clusters. The Fourier transform infrared (FTIR) spectra O–H stretching region 2500 cm−1 4000 apple juice, raspberry lyophilized from apples (apple water), and juice (raspberry water) were measured at controlled temperature applying Attenuated Total Reflection (ATR) sampling technique. dependence IR ultra-pure on was also studied. Deconvolution five Gaussians used demonstrate...
Polyphenolic compounds, plant secondary metabolites essential for survival, are known their high antioxidant and anti-inflammatory activity. In addition, several polyphenols, such as phloretin, also have potential antiviral effects, making these compounds ingredients of biofunctional foods. A promising source the extraction phloretin is a by-product apple production—apple tree leaves. Focusing on green technologies, first aim present study was to optimize direct ultrasound-assisted...
Blackcurrant (Ribes nigrum L.) fruit is valued for its content of nutritional compounds essential human health.Traditionally, major part the production has been used processing but in recent years, use these valuable berries fresh consumption increased.The quality terms size and especially important dessert type cultivars therefore more attention paid to present blackcurrant breeding programs.At Polli Horticultural
During exposure to direct sunlight, leaf temperature increases rapidly and can reach values well above air in temperate forest understories, especially when transpiration is limited due drought stress, but the physiological effects of such high-temperature events are imperfectly understood. To gain insight into changes field variation on plant photosynthetic processes, we studied dynamics under conditions European aspen (Populus tremula L.) nursery hybrid (P. × P. tremuloides Michaux),...
Organic production is one of the fastest growing food sectors globally. However, average yield in organic vegetable up to 33% lower than conventional production. This difference could be due higher fertilization rates conventional, compared organic, farming. We aimed compare and quality characteristics carrots produced under equal nitrogen over four years conditions. found a 14.5% marketable, 10.0% discarded, treatments. In addition, managed organically had 14.1% nitrate vitamin C content...
Sweet cherry (Prunus avium L.) is a temperate fruit species whose production might be highly impacted by climate change in the near future. Diversity of plant material could an option to mitigate these risks enabling producers have new cultivars well adapted environmental conditions. In this study, subsets sweet collections 19 European countries were genotyped using 14 SSR. The objectives study (i) assess genetic diversity parameters, (ii) estimate levels population structure, and (iii)...
Inonotus obliquus grows in the Northern Hemisphere on some living broadleaved tree species as a pathogen, causing stem rot. In Estonia, fungus is well known Betula but can also be found Alnus. Sterile conks of I. contain different bioactive compounds, quantitative and comparative research these compounds host limited. current work, was isolated and, evidently, determined from Alnus incana (L.) Moench., glutinosa Gaertn., pendula Roth, content hosts were analysed. All analysed sampled A. B....
The purpose of the study was to support selection process most valuable currant and gooseberry accessions cultivated in Northern Europe, order establish a decentralized core collection and, following selection, ensure sufficient genetic diversity selected collection. Molecular analyses material from nine project partners were run at seven different laboratories. results first analysed for each partner separately, then combined
Spray drying is a standard method for preserving bioactive ingredients and enhancing their storage stability. This study aimed to produce entirely plant-based spray-dried powders by using hemp, canola, flax seed proteins, combined with maltodextrin, as wall material, while chokeberry extract from wine waste served core material. We conducted thorough analysis of the oil-seed examining nitrogen solubility index, emulsification, foaming capacities. The encapsulation process was evaluated based...
Chaga (Inonotus obliquus) is a pathogenic fungus that grows mostly on birch species (Betula pendula and B. pubescens) has traditionally been used as an anti-cancer medicine. The study aimed to compare the chemical composition cytotoxic activity of chagas growing both Betula spp. various cancer cell lines. freeze dried extracts contained triterpenes inotodiol, lanosterol betulin betulinic acid typical conks species. chaga pubescens 80% ethanolic against thirty-one human lines evaluated by...
Wine pomace contains high amounts of bioactive compounds, mainly polyphenols, with varying concentrations depending on multiple factors. This research aimed to determine differences in the content polyphenols and antioxidant activity wine raw materials Japanese quince (‘Rasa’), aronia (seedlings), grape (‘Hasansky Sladky’) between harvest years (2021, 2022), as well fruits pomace. Pomace from was obtained after maceration for 5 7 days, respectively, while collected day harvest. The...
Grapevine shoots and canes represent a significant amount of biomass, considered as waste in viticulture. In cooler climates, grapevines are pruned the autumn (October) spring (March) due to harsh winter conditions (e.g., snow, low temperatures), large amounts biomass produced at these different pruning times. This work was undertaken order investigate potential vineyard for recovery polyphenolic compounds valorization. Qualitative quantitative analyses grapevine shoot cane polyphenols,...
ISHS XXVIII International Horticultural Congress on Science and Horticulture for People (IHC2010): Symposium Berries: From Genomics to Sustainable Production, Quality Health A MULTINATIONAL APPROACH FOR CONSERVING THE EUROPEAN GENETIC RESOURCES OF CURRANTS AND GOOSEBERRY
Abstract The aim of the present research was to study extent drop off blackcurrant flowers and young berries in conditions northern Europe, depending on particular genotypes weather conditions. carried out southern Estonia 2004–2007. experiment involved nine recently selected from breeding program Estonian University Life Sciences Institute Agricultural Environmental Polli Horticultural Research Centre 10 parent genotypes. Drop is considerably influenced by during flowering (temperature,...
The aim of this study was to determine the effect pre-pressing enzymatic (pectinase) treatment blackcurrant mash on juice yield and content polyphenolic compounds in press-residue.The fruits (Ribes nigrum L.) cultivars 'Ben Lomond', 'Pamyati Vavilova' 'Karri' were collected at experimental plots Polli Horticultural Research Centre Estonian University Life Sciences (58°7'26''N, 25°32'43''E).The enzyme with Panzym ® Univers preparation dosed according instructions manufacturer.The improved...
Fruit set of blackcurrant (Ribes nigrum L.) cultivars 'Almo', ' Ats', Elo', and Karri' four breeder's selections was investigated under open pollination, artificial, natural self-pollination conditions in 2006–2007. The percentage fertilized flowers, number seeds per fruit, fruit weight largely genotype dependant, but it also affected by the pollination conditions. All genotypes proved to be self-fertile, best occurred There a medium strength positive correlation between fertilization rate...