2019, Tom 83 Nr 2

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http://hdl.handle.net/11652/3943

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  • Pozycja
    Cell walls polysaccharides of rose hips
    (Wydawnictwo Politechniki Łódzkiej, 2019) Balcerzak, Bogumił; Milala, Joanna; Kosmala, Monika; Matysiak, Bożena; Klewicka, Elżbieta
    The content of alcohol insoluble solids (AIS ), polysaccharide composition of cell walls and uronic acids content calculated as galacturonic acid in rose hips (Rosa villosa (Rosa pomifera Herrm) ‘Karpatia', Rosa canina L., Rosa rugosa Thunb.). Rose hips were extracted by means of pectin sequential extraction. Rose achenes cont ained more alcohol insoluble solids than flesh. The main saccharide building cell walls of rose fruit was glucose from cellulose. The achenes were rich in xylose and the flesh was rich in arabinose. The content of galacturonic acid in flesh w as 2 to 3 times higher than in the case o f achenes. The largest polysaccharide fraction both in whole fruit and achenes was Concentrated Alkali-Soluble Polysaccharides fraction, while in flesh it was Water Soluble Pectins fraction. Chelating Agent Soluble Pectins fraction was the smallest in the flesh, achenes and the whole hypanthium. Differences in the polysaccharide composition, the content of AIS and galacturonic acid were found, depending on the species of rose hips. In addition, differences in composition were found in the case of wild growing and controlled cultivation hips. Rose hips achenes contain more total dietary fiber than the flesh, but the flesh contains more pectin fraction (soluble dietary fiber) while the achenes contain more cellulose (insoluble dietary fiber).
  • 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
    Kale (Brassica oleraceaL. var. acephala) as a source of dietary fibre
    (Wydawnictwo Politechniki Łódzkiej, 2019) Maciejak, Aleksandra; Kosmala, Monika
    The aim of the work was to determine dietary fibre content (total, soluble and insoluble) in kale. Packages of the vegetable were bought in local stores in Lodz. Dietary fibre content determined during the research was compared with the information given by producers. C onducted research proved that kale is rich in dietary fibre ( from 4 .36 to 5.05 g per 100 g of product in fresh weight, mostly in form of insoluble dietary fibre). The results of determinations carried out in the laboratory co incide with the data declared by the producers.
  • Pozycja
    Natural preservatives in meat products
    (Wydawnictwo Politechniki Łódzkiej, 2019) Sośnicka, Marta
    The use of preservatives in industrial food production is now common practice. However, there is growing concern among consumers over the harmful effectsof common chemical preservatives. As a result, there is inc reased demand for food that that has undergone little or no processing. In recent years, there has therefore been great interest in fi nding alternatives to chemical preservatives for use in the meat industry, in the form of natural ingredients. Possible solutions in clude the use of plant extracts, essential oils or antimicrobial pepti des. This paper provides a review of research on the replacement of artificial preservatives in meat products with traditional chemical compounds of natural origin.
  • Pozycja
    Polish plants as raw materials for cosmetic purposes
    (Wydawnictwo Politechniki Łódzkiej, 2019) Mietlińska, Katarzyna; Przybyt, Małgorzata; Kalemba, Danuta
    The cosmetics market is more and more demanding, and there is a constant request for new products. The aim of the study was to find plant materials occurring commonly in Poland that would have a multidirectional effect on the skin. Research focuses on plants with high content of saponins and polyphenols. Ability to create foam and ability to reduce the surface tension of water as a determinant of saponin content was checked. The Folin-Ciocalteu test was made to check the content of polyphenols. Fifty-seven raw materials were examined. To the most promising for cosmetic purposes belong goldenrods (Solidago), especially their leaves. Much better resu lts were obtained for S. canadensis and S. gigantea, than S. virgaurea.