Jarkko Hellström
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View article: Lactic and propionic acid bacteria starter cultures for improved nutritional properties of pea, faba bean and lentil
Lactic and propionic acid bacteria starter cultures for improved nutritional properties of pea, faba bean and lentil Open
Increasing plant-based food consumption as a sustainable and health-oriented alternative to meat is pivotal. Pulses are rich in proteins, minerals, and vitamins; however, they also contain antinutritional compounds, impairing their nutriti…
View article: Phenolic profiles differentiate wild bilberry and cultivated blueberry fruit
Phenolic profiles differentiate wild bilberry and cultivated blueberry fruit Open
The dark fruit of European wild-grown blueberry known as common bilberry (Vaccinium myrtillus L.) is associated with many health-promoting properties and has a steadily growing global market, especially in the food supplement sector. The a…
View article: Biorefining of legume and grass biomasses: Technological properties and bioactivities of the green juice
Biorefining of legume and grass biomasses: Technological properties and bioactivities of the green juice Open
Five legume species (fodder galega, green pea, faba bean, red clover, and white clover) and one grass (timothy) grown under field conditions were investigated as potential future foods. Technological characteristics, such as emulsifying an…
View article: Valorizing Assorted Logging Residues: Response Surface Methodology in the Extraction Optimization of a Green Norway Spruce Needle-Rich Fraction To Obtain Valuable Bioactive Compounds
Valorizing Assorted Logging Residues: Response Surface Methodology in the Extraction Optimization of a Green Norway Spruce Needle-Rich Fraction To Obtain Valuable Bioactive Compounds Open
During stemwood harvesting, substantial volumes of logging residues are produced as a side stream. Nevertheless, industrially feasible processing methods supporting their use for other than energy generation purposes are scarce. Thus, the …
View article: Applicability of hybrid aspen (Populus tremula L. × P. tremuloides Michx.) bark extract as a precursor of rigid carbon foam and activated carbon
Applicability of hybrid aspen (Populus tremula L. × P. tremuloides Michx.) bark extract as a precursor of rigid carbon foam and activated carbon Open
Hybrid aspens have long attracted scientific interest, but the research on their use as feedstocks for chemical applications are still very limited. The bark biomass of the poplar species contains many valuable extractives that can be util…
View article: Inspired by nature: Fiber networks functionalized with tannic acid and condensed tannin-rich extracts of Norway spruce bark show antimicrobial efficacy
Inspired by nature: Fiber networks functionalized with tannic acid and condensed tannin-rich extracts of Norway spruce bark show antimicrobial efficacy Open
This study demonstrated the antibacterial and antiviral potential of condensed tannins and tannic acid when incorporated into fiber networks tested for functional material purposes. Condensed tannins were extracted from industrial bark of …
View article: Chemical composition and bioactivity of hemp, reed canary grass and common reed grown on boreal marginal lands
Chemical composition and bioactivity of hemp, reed canary grass and common reed grown on boreal marginal lands Open
Biorefining potential assessment and characterisation of plant biomass fractions by two-stage extraction and selective isolation of extractives and hemicelluloses.
View article: Variation of antinutrients in faba bean cultivars during seed development
Variation of antinutrients in faba bean cultivars during seed development Open
Several chemical compounds of seven faba bean cultivars—Sampo, Louhi, Talia, Tiffany, Julia, Gloria, and Vroma—grown in Finland were determined. The effect of seed maturity on the levels of vicine/convicine (vc), trypsin inhibitors, conden…
View article: Behaviour of Extractives in Norway Spruce (Picea abies) Bark during Pile Storage
Behaviour of Extractives in Norway Spruce (Picea abies) Bark during Pile Storage Open
The current practices regarding the procurement chain of forest industry sidestreams, such as conifer bark, do not always lead to optimal conditions for preserving individual chemical compounds. This study investigates the standard way of …
View article: Jabuticaba (Myrciaria jaboticaba) Peel as a Sustainable Source of Anthocyanins and Ellagitannins Delivered by Phospholipid Vesicles for Alleviating Oxidative Stress in Human Keratinocytes
Jabuticaba (Myrciaria jaboticaba) Peel as a Sustainable Source of Anthocyanins and Ellagitannins Delivered by Phospholipid Vesicles for Alleviating Oxidative Stress in Human Keratinocytes Open
The Brazilian berry scientifically known as jabuticaba is a fruit covered by a dark purple peel that is still rich in bioactives, especially polyphenols. Considering that, this work was aimed at obtaining an extract from the peel of jabuti…
View article: The effect of thermal drying on the contents of condensed tannins and stilbenes in Norway spruce (Picea abies [L.] Karst.) sawmill bark
The effect of thermal drying on the contents of condensed tannins and stilbenes in Norway spruce (Picea abies [L.] Karst.) sawmill bark Open
Norway spruce (Picea abies (L.) Karst.) bark contains marked amounts of polyphenolic compounds. Condensed tannins (CTs) and stilbenes show commercial potential as antioxidants, antimicrobials, preservatives in food and cosmetic application…
View article: Chemical Analysis and Anthelmintic Activity Against Teladorsagia Circumcincta of Nordic Bark Extracts In vitro
Chemical Analysis and Anthelmintic Activity Against Teladorsagia Circumcincta of Nordic Bark Extracts In vitro Open
Helminth parasitic infections are common in small ruminants in Norway; infection is usually treated with anthelmintic drugs, but anthelmintic resistance is an increasing problem. It is necessary to identify strategies to reduce the use of …
View article: Inoculation success of Inonotus obliquus in living birch (Betula spp.)
Inoculation success of Inonotus obliquus in living birch (Betula spp.) Open
Inonotus obliquus is a pathogenic fungus––known as chaga in Asia and Russia and pakuri in Finland––that grows on broadleaves. Its sterile conks are used as an active ingredient in traditional healthcare products. Due to the higher value of…
View article: Profiling beneficial phytochemicals in a potato somatic hybrid for tuber peels processing: phenolic acids and anthocyanins composition
Profiling beneficial phytochemicals in a potato somatic hybrid for tuber peels processing: phenolic acids and anthocyanins composition Open
The purpose of this study was to characterize the peels of a CN1 somatic hybrid obtained from two dihaploid potato lines (Cardinal H14 and Nicola H1) in terms of the health‐promoting phenolic compounds (phenolic acids and anthocyanins). Th…
View article: Influence of storage on the physical and chemical properties of Scots pine bark
Influence of storage on the physical and chemical properties of Scots pine bark Open
Bark is currently used mainly to produce energy, but the extraction of valuable compounds before combustion offers an interesting cascading use for debarking biomass. Buffer storage is an inevitable part of bark biomass logistics, but subs…
View article: Accumulation of Phenolic Acids during Storage over Differently Handled Fresh Carrots
Accumulation of Phenolic Acids during Storage over Differently Handled Fresh Carrots Open
Carrots contain a significant content of phenolic compounds, mainly phenolic acids. Technological processing of carrots inflicts wounding stress and induces accumulation of these compounds, especially caffeic acid derivatives, in the perid…
View article: Clonal Variation in the Bark Chemical Properties of Hybrid Aspen: Potential for Added Value Chemicals
Clonal Variation in the Bark Chemical Properties of Hybrid Aspen: Potential for Added Value Chemicals Open
This study aims to promote comprehensive utilization of woody biomass by providing a knowledgebase on the utility of aspen bark as a new alternative source for fossil-based chemicals. The research focused on the analysis of clonal variatio…
View article: Fate of Antioxidative Compounds within Bark during Storage: A Case of Norway Spruce Logs
Fate of Antioxidative Compounds within Bark during Storage: A Case of Norway Spruce Logs Open
Softwood bark is an important by-product of forest industry. Currently, bark is under-utilized and mainly directed for energy production, although it can be extracted with hot water to obtain compounds for value-added use. In Norway spruce…
View article: Effects of an herbal extract composed of white tea, roasted yerba mate and fermented rooibos on the antioxidant activity and sensory properties of popsicles manufactured with different protein sources
Effects of an herbal extract composed of white tea, roasted yerba mate and fermented rooibos on the antioxidant activity and sensory properties of popsicles manufactured with different protein sources Open
Popsicle-type edible ice cream is consumed worldwide for its sensory properties. However, its nutritional composition is limited to carbohydrates, sweeteners and synthetic flavors. In this work, the objective was to develop popsicles manuf…
View article: From Norway spruce bark to carbon foams: Characterization and applications
From Norway spruce bark to carbon foams: Characterization and applications Open
Fresh bark from spruce Picea abies was milled and extracted with hot water. The extracts were purified in a number of steps in order to get tannin-extracts pure enough to prepare tannin-based carbon foams. The chemical composition of the e…
View article: Bilberry and Sea Buckthorn Leaves and Their Subcritical Water Extracts Prevent Lipid Oxidation in Meat Products
Bilberry and Sea Buckthorn Leaves and Their Subcritical Water Extracts Prevent Lipid Oxidation in Meat Products Open
The aim of this study was to find new sustainable, Nordic natural antioxidant sources, develop subcritical water extraction (SWE) process for recovering the antioxidant compounds from the most potential raw materials, and to test their ant…
View article: Tannins of Conifer Bark as Nordic Piquancy—Sustainable Preservative and Aroma?
Tannins of Conifer Bark as Nordic Piquancy—Sustainable Preservative and Aroma? Open
Bark of Norway spruce and Scots pine trees contain large amounts of condensed tannins. Tannins extracted with hot water could be used in different applications as they possess antioxidative and antimicrobial activities. The use of bark tan…
View article: Lipid oxidation inhibition capacity of plant extracts and powders in a processed meat model system
Lipid oxidation inhibition capacity of plant extracts and powders in a processed meat model system Open
A meat model system was used for screening lipid oxidation inhibiting capacity of diverse horticultural plant materials. In the model, heme-containing sarcoplasmic proteins from the meat water-phase were homogenized with linoleic acid and …
View article: Contents of phytochemicals and antinutritional factors in commercial protein-rich plant products
Contents of phytochemicals and antinutritional factors in commercial protein-rich plant products Open
The goal of this study was to determine several beneficial and antinutritional compounds in the commercial products of some protein-rich crops. Samples of faba bean (Vicia faba), lupin (Lupinus angustifolius), rapeseed press cake (Brassica…
View article: Nutritional Value of Commercial Protein-Rich Plant Products
Nutritional Value of Commercial Protein-Rich Plant Products Open
The goal of this work was to analyze nutritional value of various minimally processed commercial products of plant protein sources such as faba bean (Vicia faba), lupin (Lupinus angustifolius), rapeseed press cake (Brassica rapa/napus subs…
View article: Postprandial glycaemic response to berry nectars containing inverted sucrose
Postprandial glycaemic response to berry nectars containing inverted sucrose Open
Sucrose is commonly used for sweetening berry products. During processing and storage of berry products containing added sucrose, sucrose is inverted to glucose and fructose. We have previously shown that postprandial glycaemic response in…