M
Marja P Kähkönen
Researcher at University of Helsinki
Publications - 13
Citations - 8924
Marja P Kähkönen is an academic researcher from University of Helsinki. The author has contributed to research in topics: Berry & Bilberry. The author has an hindex of 12, co-authored 13 publications receiving 8330 citations.
Papers
More filters
Journal ArticleDOI
Antioxidant activity of plant extracts containing phenolic compounds
Marja P Kähkönen,Anu Hopia,Heikki Vuorela,Jussi-Pekka Rauha,Kalevi Pihlaja,Tytti S. Kujala,Marina Heinonen +6 more
TL;DR: High activities were found in tree materials, especially in willow bark, spruce needles, pine bark and cork, and birch phloem, and in some medicinal plants including heather, bog-rosemary, willow herb, and meadowsweet and potato peel and beetroot peel extracts showed strong antioxidant effects.
Journal ArticleDOI
Antimicrobial effects of Finnish plant extracts containing flavonoids and other phenolic compounds
Jussi-Pekka Rauha,Susanna Remes,Marina Heinonen,Anu Hopia,Marja P Kähkönen,Tytti S. Kujala,Kalevi Pihlaja,Heikki Vuorela,Pia Vuorela +8 more
TL;DR: Flavone, quercetin and naringenin were effective in inhibiting the growth of the organisms and purple loosestrife was the most active plant extracts against gram-positive Staphylococcus aureus.
Journal ArticleDOI
Berry phenolics and their antioxidant activity.
TL;DR: The extraction method affected remarkably both the phenolic composition and the antioxidant activity, but with statistical analysis the observed activity could not be well explained with the contents of individual phenolic subgroups.
Journal ArticleDOI
Antimicrobial properties of phenolic compounds from berries
Riitta Puupponen-Pimiä,Liisa Nohynek,C. Meier,Marja P Kähkönen,Marina Heinonen,Anu Hopia,Kirsi-Marja Oksman-Caldentey +6 more
TL;DR: To investigate the antimicrobial properties of phenolic compounds present in Finnish berries against probiotic bacteria and other intestinal bacteria, including pathogenic species.
Journal ArticleDOI
Antioxidant activity of anthocyanins and their aglycons.
Marja P Kähkönen,Marina Heinonen +1 more
TL;DR: Most anthocyanidins and their aglycons acted as strong antioxidants in emulsion and LDL and many compounds showed an activity comparable to the well-known antioxidants alpha-tocopherol, Trolox, catechin, and quercetin.