For sustainable sea buckthorn (Hippophae rhamnoides) berry production, the task at hand is to find an application for large amount of biomass waste arising harvesting. Sea (SBT) vegetation currently poorly studied. The purpose this research was assess composition and potential SBT twigs as a source valuable biologically active substances. Water 50% EtOH extracts three Latvian cultivars with high yield quality, popular cultivation in many countries (H. rhamnoides ‘Maria Bruvele’, ‘Tatiana’,...

It has now been proven that many pathogens cause infections and inflammation gradually mutate become resistant to antibiotics. Chemically synthesized drugs treating most often only affect symptoms, but side effects could lead the failure of human organs' functionality. On other hand, plant-derived natural compounds have a long-term healing effect. was shown sea buckthorn (SBT) twigs are rich source biologically active compounds, including oligomeric proanthocyanidins (PACs). This study aimed...

Abstract The bark of trees has a big potential as source green chemicals. aim the present work was to valorise deciduous tree species with this regard. Three widely spread in Europe (grey alder, ash tree, aspen) were focus polyphenols, and yields polyphenolic compound extracts considered evaluation criteria. highest hydrophilic extractives found barks grey alder aspen (36.8 22.9%, respectively). In former, antioxidant activity towards free radicals (DPPH • ABTS •+ ) superoxide anion radical....

Toxic formaldehyde emissions, and the necessity to reduce consumption of petrochemicals, stimulates development environmentally friendly adhesives. The aim this research was study, for first time, possibility using condensed tannins (CTs)-rich extracts from grey alder (

The industrial harvesting of sea buckthorn (SBT) berries with twigs and subsequent pruning creates a large volume lignocellulosic agro-waste. This study aimed to valorize this agro-waste as raw material for animal feed fuel granules, developing sustainable cascading SBT production scheme. Five cultivars’ biomasses were characterized by analytical pyrolysis, mass spectrometry, GC analysis. Condensed tannins, which are undesirable components feed, separated extraction. residue was analyzed...

The twigs of sea buckthorn, blackcurrant, gooseberries, quince, and grapes were evaluated as a promising source biologically active compounds—proanthocyanidins (PACs). Sea buckthorn had the highest content PACs (9.2% on dry biomass). Preliminary pretreatment biomass with freon R134a did not allow an increase in composition hydrophilic extract but confirmed value antibacterial agent against P. aeruginosa B. cereus. was used indicator for assessment influence extracts pancreatic lipase...

The comparative analysis of the chemical composition and biological activity extracts proanthocyanidins (PACs) isolated from harvesting pruning agro-waste fruit shrub-trees (Hippophae rhamnoides L. Aronia melanocarpa) forest cleaning waste non-fruit trees shrubs (Alnus incana L., Alnus glutinosa Salix caprea) Northern Europe was carried out. melanocarpa Hippophae biomass had highest content (up to 12%) on dry biomass. Fruit trees-derived purified PACs which contained structures with higher...

Aronia melanocarpa is a hardy berry-producing shrub that demands low maintenance and can grow on almost any type of soil. Since the best fruits be obtained branches younger than 7 years, pruning 1/3 usually performed each winter or after flowering, also to remove damaged overgrown branches. For sustainable production berries, it necessary find rational use for this lignocellulosic biomass. Some studies available berries show they are very rich in various biologically active substances with...

Abstract Oligomeric proanthocyanidins (OPC) rich extracts (OPCEs) were isolated by sequential extraction from the bark of deciduous trees grey alder ( Alnus incana ), black glutinosa ) and goat willow Salix caprea ). The yields OPCE all barks under study rather similar varied between 12.3% 15.4% based on oven dry (o.d.) bark. Content in OPCEs ranged 16.6% to 25% o.d. extract. characterised means antioxidant activity with ABTS˙ + DPPH˙ radical scavenging tests. All being introduced into...

A load-bearing matrix filled with biologically active compounds is an efficient method for transporting them to the target location. Bee-made propolis has long been known as a natural product antibacterial and antiviral, anti-inflammatory, antifungal properties, anti-oxidative activity. The aim of research obtain stable propolis/PVA solutions produce fibers by electrospinning. To increase content in much possible, various types extracts were used. As result research, micro- nano-fiber webs...

The seaweed collected after stranding on beaches of Latvia is underexploited natural resource, which has a potential as raw material for biologically active compound extraction cosmetic and pharmacy fertilizer in sustainable agriculture. aim the present study was development approach processing brown alga Fucus vesiculosus biomass, from Gulf Riga. thorough characterization chemical composition shown that it source obtaining nitrogen-containing fertilizers, compounds. One proposed approaches...

The bark of deciduous trees grown in Latvia: grey alder, black ash tree and goat willow were sequentially extracted using solvents increasing polarity. data about total content both lipophilic hydrophilic compounds obtained extraction with hexane ethanol. highest yields extractives found for alder barks (25.7% 25.8%, respectively). Hydrophilic extract from the species contained high amount (up to 12% on dry mass) condensed tannins (CT) or oligomeric proanthocyanidins, whereas CT ach was...

The barks of deciduous trees spread over a wide area Northern Europe, were sequentially extracted using solvents increasing polarity. highest yields hydrophilic extractives found for ash tree and goat willow (23.6% 23.8%, respectively). total contents polyphenols black alder bark (0.18 GAE·g-1 0.12 GAE·g-1, Hydrophilic extract from the both grey contained high amount (up to 7% on dry mass) condensed tannins (CT) or oligomeric proanthocyanidins (OPC). In tests with free radicals (ABTS•+,...

The effect of water extracts obtained from bark growing in Latvia and widely spread Europe grey alder ( Alnus incana ), black glutinosa ) aspen tree Populus tremula on the amylase activity human saliva was evaluated. were using advanced ACE equipment distilled hot as a solvent. total yields extractives rather similar varied 16 % to 21 based dry bark. However, content proantocianidine salicine derivatives used diagnostic characteristic for evaluation – glucose-polymers cleavage enzyme -...

Optimization of extraction conditions the proanthocyanidins (PAC) and PAC-rich extract (PACE) from bark alder species (Alnus incana Alnus glutinosa) were performed varying solvents (ethanol, distilled water), methods (conventional microwave assisted extraction), temperature (20–120 °C) times (5–60 minutes). The optimal established in work provide 87 % PAC transition to hydrophilic extracts. On basis results, technological scheme PACE isolation grey with focus on biorefinery was developed.

The purpose of this work was to evaluate the impact low rates application environmentally friendly organo-mineral soil amendments on grown under organic farming conditions dill’s green mass yield and it’s composition, including content polyphenolic compounds. Soil were obtained based forest logging residues – lignocellulosic biomass, after isolation polyphenols by water-ethanol extraction enrichment with silicon (Si)-containing inorganic oligomer in various ratios. Lignocellulosic biomass is...

To obtain a good harvest, regular pruning of fruit trees and bushes is necessary, which results in the accumulation piles cut twigs. These twigs are underutilized form large number agricultural waste. Finding use for this lignocellulosic biomass necessary sustainable resources, as well creating additional income berry growers rural workers. The purpose research was to evaluate potential branches various shrubs source valuable oligomeric polyphenolic compounds – proanthocyanidins, have wide...

The aim of this work was to evaluate the effect low rates (20-40 kg ha-1) siliconcontaining organo-mineral complex (LignoCel-Si) application on potatoes "Imanta" and summer wheat �Vinjet� productivity quality, under conditions organic farming. LignoCel-Si obtained basis residues hydrolysis lignin sea buckthorn (Hippophae rhamnoides L.) agro-waste lignocellulosic biomass after water-ethanol extraction, enriched with silicon (Si)- containing inorganic oligomer. field experiments were carried...

Sea buckthorn (Hippophae rhamnoides L.) twigs, remaining after harvesting and pruning, are an underutilized little-explored biomass resource. This study investigated the content of serotonin in 10 sea cultivars (‘Maria Bruvele’, ‘Botanicheskaya Lubitelskaya’, ‘Tatiana’, ‘Otto’, ‘Leikora’, ‘Duet’, ‘Clara’, ‘Lord’, ‘Eva’, ‘Tarmo’) for first time, further adjustment extraction conditions, cultivar ‘Maria Bruvele’ was extracted by water water/ethanol solution with 20-25, 50, 70, 96% ethanol at...

A condensed tannin enriched extract from Grey alder bark was completely liquefied using the batch solvent free oxypropylation process in a high pressure reactor. The obtained polyols were characterized terms of their composition, functionality, viscosity, and reactivity towards isocyanate. main constituents included functional polyphenolics based copolymers low – carbohydrate derived products polypropylene glycols. This structure is important for governing balance between rigidity elasticity...

Fucus V e s i culosus (F. Vesiculosus ) by its composition is a unique raw for obtaining of variety substances with wide range consumer properties. The the polyphenolic fraction F . characterized predominant content phloroglucinol polymers - phlorotannins, which are target compound this study. Microwave assisted pre-treatments algae were carried out in order to intensify extraction compound. pre-treatment efficiency was evaluated determining yield extractives, polyphenols and phlorotannins....