Artykuły (WBiNoŻ)

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

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2014 - 201932020 - 20211

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  • 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
    Olejki eteryczne – co trzeba o nich wiedzieć
    (Wydawnictwo Politechniki Łódzkiej, 2021) Sikora, Magdalena
    W produktach do pielęgnacji skóry, nie tylko samych dłoni, można wykorzystać także olejki eteryczne. Należy jednak pamiętać, że pod tą nazwą kryje się ściśle określona grupa surowców.
  • Pozycja
    The effect of thyme and tea tree oils on morphology and metabolism of Candida albicans
    (Polish Biochemical Society, 2014) Rajkowska, Katarzyna; Kunicka-Styczyńska, Alina; Maroszyńska, Marta; Dąbrowska, Mariola
    Members of Candida species cause significant problems in medicine and in many industrial branches also. In order to prevent from Candida sp. development, essential oils are more and more frequently applied as natural, non-toxic, non-pollutive and biodegradable agents with a broad spectrum of antimicrobial activity. The aim of the research was to determine changes in morphology and metabolic properties of Candida albicans in the presence of thyme and tea tree oils. Changes of enzymatic activity of isolates were observed in the presence of both tested essential oils, and they were primarily associated with loss or decrease of activity of all enzymes detected for control. Furthermore, only for 3 out of 11 isolates additional activity of N-acetyl-β-glucosaminidase, α-mannosidase, α-fucosidase and trypsin was detected. Vivid changes in biochemical profiles were found after treatment with tea tree oil and they were related to loss of ability to assimilate d-xylose, d-sorbitol and d-trehalose. The main differences in morphology of isolates compared to the control strain concerned formation of pseudohyphae structures. Both examined essential oils caused changes in cell and colony morphology, as well as in the metabolism of Candida albicans. However, the extent of differences depends on the type and concentration of an essential oil. The most important finding is the broad spectrum of changes in yeast enzymatic profiles induced by thyme and tea tree oils. It can be supposed that these changes, together with loss of ability to assimilate saccharides could significantly impact Candida albicans pathogenicity.
  • Pozycja
    Composition, biological properties and therapeutic effects of lavender (Lavandula angustifolia L.). A review
    (Lodz University of Technology. Press, 2014) Prusinowska, Renata; Śmigielski, Krzysztof
    Lavender (Lavandula angustifolia) is a shrub of the family Lamiaceae, native to the Mediterranean region. The material used for herbal purposes includes lavender flowers (Lavandula flores) containing essential oil (3%), anthocyanins, phytosterols, sugars, minerals, and tannins. The qualitative and quantitative composition of the essential oil of lavender is variable and depends on genotype, growing location, climatic conditions, propagation, and morphological features. The essential oil contains over 300 chemical compounds. The dominant components are linalool, linalyl acetate, terpinen-4-ol, acetate lavandulol, ocimene, and cineole. Lavender essential oil has good antioxidant and antimicrobial activities and a significant positive effect on the digestive and nervous systems. Lavender extract prevents dementia and may inhibit the growth of cancer cells, while lavender hydrolate is recommended for the treatment of skin problems and burns.