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The effect of processing on chokeberry (Aronia Medik.) polyphenols Organic Eprints
Hellström, Jarkko; Rajaniemi, Sirpa; Kivijärvi, Pirjo; Mattila, Pirjo.
Chokeberries were processed into jams by mixing them with sucrose, water, pectin and citric acid and then boiled. Two different boiling times(5 min and 15 min) were tested. The phenolic compounds in chokeberries were quite stable during the jam making and 70-75 % of the total phenols were recovered from the processed jams.
Tipo: Conference paper, poster, etc. Palavras-chave: Food security; Food quality and human health.
Ano: 2007 URL: http://orgprints.org/16007/1/berry9.pdf
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High variability in anthocyanin contents between different blackcurrant varieties Organic Eprints
Hellström, Jarkko; Hietaranta, Tarja; Karhu, Saila; Mattila, Pirjo; Tiirikka, Timo; Veteläinen, Merja.
The results confirm that blackcurrant is a good source of anthocyanins. However, remarkable variation in the anthocyanin content between varieties is evident. The anthocyanin profile is always dominated by four major anthocyanins, yet some variation appears in their relative proportions. The high anthocyanin content is usually most desirable in the blackcurrant products and this study shows that the choice of variety may have a great impact on it.
Tipo: Conference paper, poster, etc. Palavras-chave: Food security; Food quality and human health.
Ano: 2010 URL: http://orgprints.org/18316/1/Hellstrom.pdf
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Understanding health-promoting bioactive compounds in blackcurrants and their agronomic improvement Organic Eprints
Karjalainen, Reijo; Stewart, Derek; McDougall, Gordon J.; Hilz, Hauke; Anttonen, Mikko; Saviranta, Niina; Mattila, Pirjo; Törrönen, Riitta.
The potential health benefits of black currant based products may be greatly increased if berries from cultivars with high contents of the health-promoting compounds are used as raw materials. The high variability in the levels of flavonols in different black currant cultivars have been demonstrated showing the potential of plant breeding for taking advantage to develop special cultivars for high in health-promoting compounds in target populations. Farming methods either growing organic or conventional means, did not found to have any major influence on the phenolic contents in blackcurrants. With the help of molecular-marker techniques, introgression of defined genes or genome parts possessing health effects is a tool box of modern breeding for...
Tipo: Conference paper, poster, etc. Palavras-chave: Food security; Food quality and human health.
Ano: 2008 URL: http://orgprints.org/15785/1/Reijok.doc
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pH dependence of antimicrobial activity of berries Organic Eprints
Rokka, Susanna; Hellström, Jarkko; Mattila, Pirjo; Marnila, Pertti.
We have analyzed phenolic compounds from organically and conventionally grown blackcurrants and strawberries to test the idea if organically grown berries contain a higher amount of health-promoting phenolic compounds. Statistically significant differences between farms were found for almost all compounds. In strawberry, the impact of genotype and environment on the flavonol content was more important than the cultivation practice. The "health quality" from organically grown berries does not differ from those grown conventionally.
Tipo: Conference paper, poster, etc. Palavras-chave: Food security; Food quality and human health.
Ano: 2007 URL: http://orgprints.org/16002/1/berry5.pdf
Registros recuperados: 4
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