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  • 1
    Digitale Medien
    Digitale Medien
    SEPARATION OF STEROLS AND TRITERPENE ALCOHOLS FROM UNSAPONIFIABLE FRACTIONS OF THREE PLANT SEED OILS (2000)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food lipids 7 (2000), S. 0 
    Details
    ISSN: 1745-4522
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Preparative HPLC was used to separate sterols and triterpene alcohols from the unsaponifiable matters in plant oils from Camellia weiningensis L., Brassica juncea L. and Microula sikkimensis. The isolated sterols and triterpene alcohols were acetylated and further purified by AgNO3 impregnated silica gel preparative thin layer chromatography (TLC). The isolated acetyl derivatives of sterols and triterpene alcohols were identified by melting point, specific rotation, infrared and mass spectrometry. The sterols were brassicasterol, campesterol, stigmasterol, β-sitosterol and Θ5-avenasterol, Θ7-avenasterol, Θ7-stigmastenol and α-spinasterol. The triterpene alcohols were cycloartanol, cycloartenol, 24-methylenecycloartanol, cyclobranol, dammaradienol, tirucalla-7,24-dienol, butyrospermol, β-amyrin, germanicol, α-4-taraxasterol and lupeol.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1745-4522.2000.tb00156.x
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  • 2
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    Relationship between plasma lipids and mild cognitive impairment in the elderly Chinese: a case-control study (2016)
    BioMed Central
    Details
    Publikationsdatum: 2016-09-06
    Beschreibung: High lipid levels may constitute a more important risk factor for cognitive health in previous studies. However, the association of plasma lipids with mild cognitive impairment (MCI) among elderly people had n...
    Digitale ISSN: 1476-511X
    Thema: Biologie
    Publiziert von BioMed Central
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 3
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    Effects of cold plasma treatment on seed germination and seedling growth of soybean (2014)
    Nature Publishing Group (NPG)
    Details
    Publikationsdatum: 2014-08-02
    Beschreibung: Effects of cold plasma treatment on soybean (Glycine max L. Merr cv. Zhongdou 40) seed germination and seedling growth were studied. Seeds were pre-treated with 0, 60, 80, 100 and 120 W of cold plasma for 15 s. Results showed that plasma treatments had positive effects on seed germination and seedling growth, and treatment of 80 W had the highest stimulatory effect. Germination and vigor indices significantly increased by 14.66% and 63.33%, respectively. Seed's water uptake improved by 14.03%, and apparent contact angle decreased by 26.19%. Characteristics of seedling growth, including shoot length, shoot dry weight, root length and root dry weight, significantly increased by 13.77%, 21.95%, 21.42% and 27.51%, respectively, compared with control. The seed reserve utilization, including weight of the mobilized seed reserve, seed reserve depletion percentage and seed reserve utilization efficiency significantly improved by cold plasma treatment. In addition, soluble sugar and protein contents were 16.51% and 25.08% higher than those of the control. Compared to a 21.95% increase in shoot weight, the root weight increased by 27.51% after treatment, indicating that plasma treatment had a greater stimulatory effect on plant roots. These results indicated that cold plasma treatment might promote the growth even yield of soybean. Scientific Reports 4 doi: 10.1038/srep05859
    Digitale ISSN: 2045-2322
    Thema: Allgemeine Naturwissenschaft
    Publiziert von Nature Publishing Group (NPG)
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  • 4
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    Mitochondrial accumulation under oxidative stress is due to defects in autophagy (2012)
    Wiley-Blackwell
    Details
    Publikationsdatum: 2012-08-18
    Beschreibung: Mitochondrial dynamics maintains normal mitochondrial function by degrading damaged mitochondria and generating newborn mitochondria. The accumulation of damaged mitochondria influences the intracellular environment by promoting mitochondrial dysfunction, and thus initiating a vicious cycle. Oxidative stress induces mitochondrial malfunction, which is involved in many cardiovascular diseases. However, the mechanism of mitochondrial accumulation in cardiac myoblasts remains unclear. We observed mitochondrial dysfunction and an increase in mitochondrial mass under the oxidative conditions produced by tert -butyl hydroperoxide (tBHP) in cardiac myoblast H9c2 cells. However, in contrast to the increase in mitochondrial mass, mitochondrial DNA (mtDNA) decreased, suggesting that enhanced mitochondrial biogenesis may be not the primary cause of the mitochondrial accumulation. Therefore, we investigated changes in a number of proteins involved in autophagy. Beclin1, Atg12-Atg5 conjugate, Atg7 contents decreased but LC3-II accumulated in tBHP-treated H9c2 cells. Moreover, the capacity for acid hydrolysis decreased in H9c2 cells. We also demonstrated a decrease in DJ-1 protein under the oxidative conditions that deregulate mitochondrial dynamics. These results reveal that autophagy became defective under oxidative stress. We therefore suggest that defects in autophagy mediate mitochondrial accumulation under these conditions. J. Cell. Biochem. © 2012 Wiley Periodicals, Inc.
    Digitale ISSN: 0091-7419
    Thema: Biologie , Chemie und Pharmazie , Medizin
    Publiziert von Wiley-Blackwell
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 5
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    Host–Guest Chirality Interplay: A Mutually Induced Formation of a Chiral ZMOF and Its Double-Helix Polymer Guests (2016)
    American Chemical Society (ACS)
    Details
    Publikationsdatum: 2016-01-15
    Beschreibung: Journal of the American Chemical Society DOI: 10.1021/jacs.5b12516
    Print ISSN: 0002-7863
    Digitale ISSN: 1520-5126
    Thema: Chemie und Pharmazie
    Publiziert von American Chemical Society (ACS)
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 6
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    Mesospheric temperatures estimated from the meteor radar observations at Mohe, China (2017)
    Wiley-Blackwell
    Details
    Publikationsdatum: 2017-01-29
    Beschreibung: In this work, we report the estimation of mesospheric temperatures at 90 km height from the observations of the VHF all-sky meteor radar operated at Mohe (53.5 °N, 122.3° E), China, since August 2011. The kinetic temperature profiles retrieved from the observations of Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) onboard the Thermosphere, Ionosphere, Mesosphere, Energetics, and Dynamics (TIMED) satellite are processed to provide the temperature (T SABER ) and temperature gradient (dT/dh) at 90 km height. Based on the SABER temperature profile data an empirical dT/dh model is developed for the Mohe latitude. First, we derive the temperatures from the meteor decay times (T meteor ) and the Mohe dT/dh model gives prior information of temperature gradients. Secondly, the full-width of half maximum (FWHM) of the meteor height profiles is calculated and further used to deduce the temperatures (T FWHM ) based on the strong linear relationship between FWHM and T SABER . The temperatures at 90 km deduced from the decay times (T meteor ) and from the meteor height distributions (T FWHM ) at Mohe are validated/calibrated with T SABER . The temperatures present a considerable annual variation, being maximum in winter and minimum in summer. Harmonic analyses reveal that the temperatures have an annual variation consistent with T SABER . Our work suggests that FWHM has a good performance in routine estimation of the temperatures. It should be pointed out that the slope of FWHM as a function of T SABER is 10.1 at Mohe, which is different from that of 15.71 at King Sejong (62.2° S, 58.8° E) station.
    Print ISSN: 0148-0227
    Thema: Geologie und Paläontologie , Physik
    Publiziert von Wiley-Blackwell im Namen von American Geophysical Union (AGU).
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