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    Wyświetlanie 1-6 z 6
    Tytuł:
    Bioactive compounds from marine invertebrates for potential medicines - an overview
    Autorzy:
    Datta, D.
    Talapatra, S.N.
    Swarnakar, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/10980.pdf
    Data publikacji:
    2015
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    bioactive compound
    marine invertebrate
    natural product
    medicine
    application
    therapeutic agent
    Opis:
    The present review deals with the bioactive compounds of the marine non-chordates. The potent medicinal usage of the bioactive compounds viz. steroids, terpenoids, isoprenoid and non-isoprenoid compounds, quinones, brominated compounds, nitrogen heterocyclics and nitrogen-sulphur heterocyclics from marine non-chordates have been compiled. Various literatures survey revealed that the bioactive compounds isolated in recent past from the marine poriferans, cnidarians, annelids, arthropods, molluscs and echinoderms could be rich sources of therapeutic agents having antibacterial, antiinflamatory, anticarcinogenic properties. In overall, the present study will be benefitted to know global drug discovery researches on bioactive compounds from marine organisms for students, scholars, scientists, pharmaceutical sector, and government regulating authorities as new challenging technology in clinical applications through medicines.
    Źródło:
    International Letters of Natural Sciences; 2015, 07
    2300-9675
    Pojawia się w:
    International Letters of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An overview of lectins from freshwater and marine macroinvertebrates
    Autorzy:
    Datta, Debjani
    Talapatra, Soumendra Nath
    Swarnakar, Snehasikta
    Powiązania:
    https://bibliotekanauki.pl/articles/1192685.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Bioresources
    freshwater species
    marine invertebrates
    medicinal importance
    drug development
    natural therapeutic agents
    Opis:
    Lectins are one of several types of biological resources considered as potential medicinal importance for therapeutic agents. The present review deals with variety, sugar specificity and the medicinal importance of lectins from freshwater and marine invertebrates. The potent medicinal usage of the various types of the lectins from freshwater and marine non-chordates, which are comparatively well studied and compiled. Various literatures survey revealed that the lectin isolated in recent past from the freshwater species majorly from mollusca and arthropods (crustacean) etc. and also from marine sources of phylum porifera, cnidaria, annelida, arthropoda, mollusca and echinodermata could be rich sources of medicinal properties having remedial measures to bacterial infection, inflammatory disorders, cancer, mitogenic effect and antigen defence. The present study will be a database development to support global drug discovery researches on several types of lectins from freshwater and marine organisms for academicians, researchers and medicine manufacturers having therapeutic approaches for mankind by natural ingredients.
    Źródło:
    World Scientific News; 2016, 46; 77-87
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Applied radiotracer techniques for studying pollutant bioaccumulation in selected marine organisms (jellyfish, crabs and sea stars)
    Autorzy:
    Fowler, S.
    Teyssié, J.
    Cotret, O.
    Danis, B.
    Rouleau, C.
    Warnau, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/147253.pdf
    Data publikacji:
    2004
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    radiotracers
    bioaccumulation
    metals
    radionuclides
    PCB
    marine invertebrates
    Opis:
    Obtaining specific information on contaminant biokinetics in marine biota is often necessary for properly interpreting monitoring data on trace contaminant levels in bioindicator species living under varying environmental conditions. Radiotracers have been employed in laboratory experiments to assess the uptake, distribution and retention of selected heavy metals and PCB congeners in three potential marine bioindicators occupying different ecological niches in the coastal zone. Pelagic and benthic jellyfish readily accumulated Co, Ag, Zn, Cd, 137Cs and 241Am from both water and food and retained them with biological half-lives (Tb1/2) ranging from a few days to several weeks. Zinc and silver were accumulated to the greatest degree (CF ~ 4 ´ 102), with benthic jellyfish having a greater affinity for metals than the pelagic species. Results from light–dark experiments indicate that the enhanced metal uptake in the benthic jellyfish is due to the presence of endosymbiotic photosynthetic zooxanthellae situated in the arms of organisms. Shore crabs ingesting Ag, a sewage-related contaminant, readily accumulated the metal with male crabs assimilating some 71% and female crabs 51% of the Ag from their food. Moreover, the assimilated fraction of Ag remained virtually immobile in their tissues as evidenced by an extremely long Tb1/2 for depuration of 7.3 years. Sea stars exposed to 14C-labelled PCB congener #153 in sea water accumulated the congener mainly in the body wall and podia reaching lipid weight CFs that ranged between approximately 2 x 10 5 to 4 x 10 5. In contrast, following exposure in radio-labelled sediments, the corresponding PCB transfer factors in the same tissues were much lower, viz., 3 x 10 2 to 5 x 10 2. Nevertheless, regardless of the exposure mode, CFs of PCB in the other tissues (digestive system, gonads, pyloric and rectal caeca) were consistently one to two orders of magnitude lower, an observation which suggests that sea star body wall and podia could serve as target tissues in biomonitoring studies assessing these toxic compounds.
    Źródło:
    Nukleonika; 2004, 49, 3; 97-100
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Muscle cathepsins of marine fish and invertebrates
    Autorzy:
    Kolodziejska, I.
    Sikorski, Z.E.
    Powiązania:
    https://bibliotekanauki.pl/articles/1372835.pdf
    Data publikacji:
    1995
    Wydawca:
    Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
    Tematy:
    invertebrate
    endopeptidase
    fish
    structure
    protease
    extracellular matrix
    lysosome
    exopeptidase
    cathepsin C
    cathepsin A
    muscle protein
    myofibrillar protein
    lysosomal protease
    marine fish
    protein
    myofibril
    muscle cathepsin
    food preservation
    sarcoplasm
    cathepsin L
    carboxypeptidase A
    cathepsin B
    Opis:
    Muscle proteases are located mainly in the lysosomes, in the sarcoplasm, and in the extracellular matrix of the connective tissue surrounding each cell. The lysosomal proteases, cathepsins, have optimum activity in the acidic range, although many of them retain high activity also 1 or 2 pH units away from the optimum value. Among the cathepsins there are endopeptidases and exopeptidases. Most cathepsins hydrolyse several proteins of the myofibrils. The major protease of the lysosomes in fish and squid muscles is cathepsin D, an aspartyl endoproteinase. Although it is present in the muscle fibre itself, its generally rather low activity at low temperature limits its significance in tenderization of refrigerated fish of most species. Cathepsin L, a cysteinyl protease, is involved in autolysis and softening in matured chum salmon. Cathepsin B, a cysteinyl carboxypeptidase, is capable to attack also some myofibrillar proteins. Cathepsin A or carboxypeptidase A, and cathepsin C, a dipeptidyl hydrolase and dipeptidyl transferase, contribute to the hydrolysis of muscle proteins in a concerted action with the other cathepsins.
    Źródło:
    Polish Journal of Food and Nutrition Sciences; 1995, 04, 3; 3-10
    1230-0322
    2083-6007
    Pojawia się w:
    Polish Journal of Food and Nutrition Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The properties and utilization of proteases of marine fish and invertebrates
    Autorzy:
    Kolodziejska, I.
    Sikorski, Z.E.
    Powiązania:
    https://bibliotekanauki.pl/articles/1372735.pdf
    Data publikacji:
    1995
    Wydawca:
    Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
    Tematy:
    invertebrate
    fish
    protease
    utilization
    internal organ
    thermal denaturation
    textural change
    metabolic function
    muscle
    marine organism
    fish meat
    marine animal
    marine fish
    life cycle
    seafood
    food preservation
    property
    protein concentrate
    fish product
    Opis:
    The muscles and internal organs of marine animals contain many proteases. These enzymes fulfill different metabolic functions in the living organisms and affect the sensory quality and functional properties of the catch. Their activity depends on the species, life cycle, and the feeding status of the organism. Many proteases of marine origin differ from their counterparts in terrestrial animals in being more active at lower temperature and less resistant to thermal denaturation. Of practical importance in the industry is their role in ripening of salted fish, fish sauces and marinades, modyfying fish protein concentrates, ensilaging of seafood offal, and deskinning of fishery products. The negative effects comprise mainly the early post morten quality degradation of the catch and deterioration of the rheological properties of fish gels. Proteolytic preparations form different marine sources may be used successfully in food processing and as industrial enzymes, e. g. tanning agents.
    Źródło:
    Polish Journal of Food and Nutrition Sciences; 1995, 04, 1; 5-12
    1230-0322
    2083-6007
    Pojawia się w:
    Polish Journal of Food and Nutrition Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Non- i mono-orto kongenery PCB w wybranych przetworach z bezkręgowców morskich
    Non- and mono-ortho PCB congeners in selected tinned marine invertebrates
    Autorzy:
    Witczak, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/825812.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Technologów Żywności
    Opis:
    Celem pracy było oznaczenie non-orto (PCB nr 77, PCB nr 126, PCB nr 169) i mono-orto (PCB nr 114, PCB nr 156, PCB nr 157) kongenerów PCB w wybranych przetworach z bezkręgowców morskich oraz określenie ryzyka narażenia toksykologicznego konsumentów badanych produktów poprzez wyznaczenie toksyczności ekwiwalentnej TEQs. Kongenery PCBs oznaczono w 10 rodzajach konserw z bezkręgowców morskich, zakupionych w 2004 r. w sieci detalicznej w Szczecinie, stosując kapilarną chromatografię gazową w aparacie GC MSD (6890/5973). We wszystkich przetworach wykryto analizowane kongenery PCB. Jedynie PCB 114 nie stwierdzono w „Ośmiornicach w oleju roślinnym” i „Krewetkach zimnowodnych w zalewie”. Spośród non-orto kongenerów PCB stwierdzono najwyższą koncentrację PCB 77 w mokrej masie przetworu „Kraby w sosie własnym” (0,264 μg·kg⁻¹ m.m.). W przypadku mono-orto PCB wykazano największą zawartość (0,793 μg·kg⁻¹ m.m.) PCB 114 w „Ostrygach podwędzanych w oleju”. TEQs kształtowały się w granicach od 0,0004 μg·kg⁻¹ m.m. w „Małżach marynowanych” do 0,0065 μg·kg⁻¹ m.m. w „Ośmiornicach w oleju roślinnym”. Bezkręgowce morskie w postaci przetworzonej zawierają niewiele toksycznych kongenerów PCB i ze względów toksykologicznych nie stanowią zagrożenia dla bezpieczeństwa zdrowotnego konsumenta.
    The aim of the research was to determine concentrations of non-ortho (PCB nr 77, PCB nr 126, PCB nr 169) and mono-ortho (PCB nr 114, PCB nr 156, PCB nr 157) PCB congeners in selected food products from marine invertebrates. The data were used to asses toxicological risk of the products for consumers by determination of toxic equivalents TEQs. PCB congeners were found in 10 types of the tinned marine invertebrates witch were purchased in 2004 from retail network in Szczecin. The capillary gas chromatography in a GC MSD apparatus (6890/5973) was used. Residues of analysed PCB congeners were detected in all examined products. Only PCB 114 was not found in „Octopuses in Plant Oil” and „Coldwater Shrimps in Marinade”. Of non-ortho PCB congeners, the highest concentration of PCB 77 was found in „Crabs in Natural Juices” (0,264 μg·kg⁻¹ w.m.). Of mono-ortho PCBs, the highest concentration of PCB 114 was found in „Smoked Oysters in Oil” (0,793 μg·kg⁻¹ w.m.). TEQs ranged from 0,0004 μg·kg⁻¹ w.m. in „Marinated Clams” to 0,0065 μg·kg⁻¹ w.m. in „ Octopuses in Plant Oil”. Marine invertebrates are subjected to culinary treatment preceding consumption, so they are characterized by low concentrations of toxic PCB congeners. Considering toxicological aspects the food products from marine invertebrates are safe for consumers.
    Źródło:
    Żywność Nauka Technologia Jakość; 2007, 14, 3
    1425-6959
    Pojawia się w:
    Żywność Nauka Technologia Jakość
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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