3 research outputs found

    Effect of technological process of the content of folic acid in bread

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    W badaniach modelowych oznaczano zawarto艣膰 kwasu foliowego na poszczeg贸lnych etapach produkcji pieczywa pszennego i 偶ytniego, wypiekanego z m膮ki wzbogaconej kwasem foliowym w ilo艣ci 0,01 g/100 g m膮ki. Wyekstrahowanie kwasu foliowego z analizowanych produkt贸w przeprowadzono wg metody podanej przez Gujsk膮 i Kuncewicz z modyfikacj膮 zgodnie z PN-EN 14131: 2003, stosuj膮c hydroliz臋 tr贸jenzymatyczn膮 (koniugaza, 伪-amylaza, proteza). Oznaczenia zawarto艣ci kwasu foliowego prowadzano metod膮 chromatografii cieczowej, wykorzystuj膮c wysokosprawny chromatograf cieczowy (La ChromElite, Hitachi) z detektorem UV/VIS. Stwierdzono, 偶e technologiczny proces produkcji chleba wp艂ywa艂 na zmniejszenie zawarto艣ci dodanego kwasu foliowego. W przypadku chleba pszennego zawarto艣膰 kwasu foliowego by艂a w nim mniejsza o 35 % w stosunku do jego ilo艣ci w m膮ce, natomiast w chlebie 偶ytnim a偶 o 62 %. Uwzgl臋dniaj膮c aspekty bezpiecze艅stwa 偶ywno艣ci, badania technologiczne powinny odzwierciedla膰 poziom rzeczywistego wzbogacenia produkt贸w zbo偶owych w kwas foliowy.Under the model investigations as presented herein, the content of folic acid was determined in individual stages of the technological process of producing wheat and rye bread from the flour fortified with 0.01g/100 g of folic acid. The extraction of folic acid from the products analyzed was performed according to a method described by Gujska and Kuncewicz and modified pursuant to the Polish Standard PN/EN 14131:2003; a process of tri-enzyme hydrolysis (coniugase, 伪-amylase, protease) was applied in the extraction. The determination of the folic acid content was carried out by a liquid chromatography method using a high performance chromatograph (La ChromElite, Hitachi) with a UV/VIS detector. It was found that the technological process of producing wheat and rye bread caused the content of the added folic acid to decrease. As for the wheat bread, the content of folic acid in the final product was by 35 % lower compared to its amount in the flour, and as for the rye bread - by as much as 62 %. The food safety aspects were taken into consideration since the technological investigations should reflect the real level of fortifying cereal products with folic acid
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