Artykuły (WBiNoŻ)

Stały URI dla kolekcjihttp://hdl.handle.net/11652/147

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2014 - 20192

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Teraz wyświetlane 1 - 2 z 2
  • Pozycja
    Functional ice cream with a "clean label"
    (Wydawnictwo Politechniki Łódzkiej, 2019) Motyl, Wojciech; Dziugan, Piotr; Motyl, Ilona; Jóźwiak, Aleksandra; Nowak, Szymon
    High market competitiveness as well as in creased interest in health-related products forces producers to create new products and innovative production technologies that would encourage a potential customer to buy. The idea of "clean label" enjoys growing popularity due to the strong in terest in healthy, unprocessed products and simple ingredients. Currently, products of this type are not yet very popular in the assortment of ice cream available on the Polish market. Ice cream enriched with selected nutrients are in accordance with prevailing dietary trends. An interesting proposal to increase the health value of ice cream may be the introduction of vitamins, mineral preparations and dietary fiber into their composition. The pro-health activity of dietary fiber is related to their beneficial effects on human intestinal microflora. From technological point of view, ice cream with the addition of fiber preparation was characterized by a significantly longer melting time than ice cream without fiber. Another way to enrich the ice cream is the addition of probiotics. Consumption of probiotic-containing ice cream can have a positive effect on human health mainly through immune system. In order to achieve the desired health effect as a result of consumption of probiotic ice cream, it is necessary to ensure therapeutic minimum related to ensuring the minimum number of viable cells of probiotic bacteria n ecessary to guarantee the beneficial effects of probiotic microflora on the human body (e.g. milk fermented beverages, the therapeutic minimum is 10⁶-10⁷ CFU/g).
  • Pozycja
    Wzrost i przeżywalność bakterii probiotycznych w obecności heterocyklicznych amin aromatycznych
    (Lodz University of Technology. Press, 2014) Nowak, Adriana
    Heterocyclic aromatic amines (HCAs) ingested with heat-processed meat can contribute to colon cancer development. Those compounds interact with human intestinal microbiota. Under the research study, the effect was analyzed of IQ, MeIQx, or PhIP amines (each of them at 5 and 25 μg/ml concentration rates) on the growth (24 h cultivation in MRS broth) and survival (incubation for max. 120 h in a phosphate buffer) of four probiotic strains of Lactobacillus. It was found that no concentration level of the HCAs analyzed impacted the growth of bacteria. A higher concentration level of IQ (25 μg/ml) decreased the survival of Lb. casei 0900 after a 24 h period of incubation. MeIQx and PhIP also decreased the survival of Lb. paracasei 0919 after a 24 h period of incubation. Totally, the count of living cells decreased from 109 cfu/ml to 108 cfu/ml. Three strains were absolutely resistant to PhIP during a 120 h period of incubation. The results obtained prove that the probiotic bacteria studied maintain their high viability in the presence of the amines tested and, probably, they can bind together with them in human colon and, then, the aggregated particles are removed from the human body.