Reduction in the content of antinutritional substances in pea seeds (Pisum sativum L.) by different treatments
Dvorak, R.(Veterinarni a Farmaceuticka Univ., Brno (Czech Republic). Klinika Chorob Prezvykavcu)E-mail:[email protected] | Pechova, A.(Veterinarni a Farmaceuticka Univ., Brno (Czech Republic). Klinika Chorob Prezvykavcu) | Pavlata, L.(Veterinarni a Farmaceuticka Univ., Brno (Czech Republic). Klinika Chorob Prezvykavcu) | Filipek, J.(Veterinarni a Farmaceuticka Univ., Brno (Czech Republic). Klinika Chorob Prezvykavcu) | Dostalova, J.(Vysoka Skola Chemicko-technologicka, Prague (Czech Republic)) | Reblova, Z.(Vysoka Skola Chemicko-technologicka, Prague (Czech Republic)) | Klejdus, B.(Mendelova Zemedelska a Lesnicka Univ., Brno (Czech Republic)) | Kovarcik, K.(Vyzkumny Ustav Veterinarniho Lekarstvi, Brno (Czech Republic)) | Poul, J.(Zemedelsko-obchodní Druzstvo Zichlinek (Czech Republic))
Pea seeds (variety Gotik) were exposed to different heat treatments using vapour, organic acids and selected oxides in order to reduce their concentrations of antinutritional substances. The concentration of trypsin inhibitors in native pea seeds was about 15.4 TIU. After applying one of the three treatments differing in the reactor temperature, exposure time and duration of ageing, this activity dropped by 80.5-83.8%. The titre of lectins decreased by 35.7-73.2%, tannins (gallic acid) concentrations by 32.0-46.2%, raffinose conc. by 6.3-10.5%, verbascose conc. by 5.6-20.5%, stachyose conc. by 7.0-16.4%. An increase in the concentration of isoflavone oestrogens and most of the phenolic acids studied was recorded. The most efficient treatment was the one using 80-90 deg C for 50 min and 60 min of ageing.
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