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Wyszukujesz frazę "bioactive compounds" wg kryterium: Temat

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    Wyświetlanie 1-3 z 3
    Tytuł:
    Chemical composition and cellulase-assisted extraction of total saponins from Gomphrena celosioides Mart.
    Autorzy:
    Yen, N.T.H.
    Quoc, L.P.T.
    Powiązania:
    https://bibliotekanauki.pl/articles/2096279.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    bioactive compounds
    composition
    enzyme
    extraction
    Gomphrena celosioides Mart.
    Opis:
    The major purpose of the present study was to determine the chemical composition of dried Gomphrena celosioides Mart., including crude protein, lipid, total sugar, reducing sugar, ash, crude fiber, moisture, crude pectin, and total saponins in particular. This plant contains a large percentage of total saponins, which are widely used in food technology and pharmaceutical industries. In our study, the conditions for the extraction of total saponins from the plant were optimized, with special focus on cellulase concentration, pH, hydrolyzation time, and temperature. The highest amount of total saponins content (TSC) was 1.550±0.016% under optimal extraction conditions (cellulase concentration: 0.7% (v/w), hydrolyzation time: 4 h, hydrolyzation temperature: 60EC, and pH value: 5). Accordingly, the total saponins from G. celosioides Mart. were easily extracted.
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2020, 101, 4; 361-367
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Caenorhabditis elegans as a model organism in obesity research
    Autorzy:
    Dyczkowska, A.A.
    Chabowska-Kita, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2096413.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    obesity
    Caenorhabditis elegans
    microbiota
    dietary restriction
    bioactive compounds
    temperature
    Opis:
    Obesity is a global health problem associated with many comorbidities such as type 2 diabetes and cancer. The number of individuals with overweight and obesity have increased dramatically within the past few years. Given the worldwide cost of an obesity pandemic, it is crucial to understand molecular pathways and identify novel factors that regulate fat storage in humans. In recent years, Caenorhabditis elegans has been widely used to investigate metabolic and neuroendocrine mechanisms involved in the regulation of energy metabolism. In this review, we describe similarities in fundamental signalling pathways regulating fat accumulation between nematodes and mammals. Like in humans, fat storage in C. elegans depends on the interaction of genetic and environmental factors such as diet, microbiota and ambient temperature. Despite many challenges, the simplicity of use, relatively short lifespan, genetic conservation and availability of many valuable experimental techniques make C. elegans an attractive and useful model organism in obesity research.
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2021, 102, 3; 337-362
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of various drying methods on physicochemical characteristics, antioxidant activity and bioactive compounds in Centella asiatica L. leaves: a comparative study
    Autorzy:
    Mohapatra, Priyanka
    Ray, Asit
    Jena, Sudipta
    Nayak, Sanghamitra
    Mohanty, Sujata
    Powiązania:
    https://bibliotekanauki.pl/articles/16648130.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    antioxidant activity
    bioactive compounds
    Centella asiatica
    color characteristics
    drying methods
    Opis:
    This comparative study aimed to evaluate the effects of different drying methods such as solar drying, shade drying (SHD), freeze drying (FD), oven drying, and microwave drying on the physicochemical properties, bioactive components, and antioxidant activity of Centella asiatica. The results showed that out of all the treated samples, FD-treated samples showed the lowest moisture content (2.4%), the lowest water activity (0.24%), and the highest rehydration ratio (5.51%). For samples treated using different drying methods, significant differences in Commission on Illumination – LAB (L *, a *, and b *) values and total color difference (E) were observed. FD-treated samples showed the minimum color change (E) and highest lightness (L*). Additionally, upon Fourier transform infrared spectral analysis, no major changes in the functional groups were observed between C. asiatica leaves processed using different drying methods. FD-treated samples showed the highest antioxidant activity followed by SHD-treated samples, as measured by 2,2-diphenyl-1-picrylhydrazyl and 2,2-azino-bis-3-ethylbenzothiazoline-6-sulphonic acid radical scavenging assays. The phenolic (chlorogenic acid, rutin, kaempferol, and quercetin) and triterpene saponin (madecassoside, asiaticoside, madecassic acid, and asiatic acid) contents of the dried samples of C. asiatica were measured using high-performance liquid chromatography, which showed that the FD method allowed for the highest retention of phenolic and triterpene saponins among the tested drying techniques. The physicochemical characteristics, antioxidant potential, and bioactive retention of the samples that underwent FD treatment were superior to those of other methods, and therefore, FD can be employed as the first-line drying technique for processing C. asiatica leaves.
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2022, 103, 3; 235-247
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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