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Untersuchung zum Einfluss von Stilbenoiden auf den Stoffwechsel von humanen Leberkarzinomzellen
Get PDF“Certification” of the Workshop activity (quality assurance) included the certification of devices used for the inspections
Get PDFQuality and uniformity of the inspections are very important. When the inspections are not done in the right way or with testing equipment not in good condition, the goal of the establishment of an inspection scheme will not be reached. There fore a system of quality assurance is needed. This scheme shall cover the whole procedure and all aspects related to the inspection of sprayers. It starts with clear guidelines for all types of sprayers, well trained test-operators and testing equipment what is good condition. Then the inspections shall be performed in the right way be workshops/testing teams accorinding to the right procedures with the right use of the testing equipment, therefore periodical control on their activities is needed.Quality and uniformity of the inspections are very important. When the inspections are not done in the right way or with testing equipment not in good condition, the goal of the establishment of an inspection scheme will not be reached. There fore a system of quality assurance is needed. This scheme shall cover the whole procedure and all aspects related to the inspection of sprayers. It starts with clear guidelines for all types of sprayers, well trained test-operators and testing equipment what is good condition. Then the inspections shall be performed in the right way be workshops/testing teams accorinding to the right procedures with the right use of the testing equipment, therefore periodical control on their activities is needed
Optimization of brewing conditions in epigallocatechin-3-gallate (EGCG) extraction from Jinxuan summer green tea by response surface methodology
Get PDFThe extraction conditions of epigallocatechin-3-gallate (EGCG) from Jinxuan summer green tea and antitumor activity against human gastric cancer SGC-7901 cells of the green tea extracts were investigated. On the basis of a single factor experiment, Box-Behnken design and response surface methodology were employed to optimize the hot water extraction conditions. The optimal extraction conditions for EGCG were determined as: extraction temperature of 85 °C, extraction time of 34 min, water-tea ratio of 41 mL/g, a solution of pH 6, and extraction twice. Under these conditions, the experimental extraction yield value of EGCG was 33.82 mg/g, which was not significantly different in comparison to predicted values. The results indicated that the regression models were suitable for the EGCG extraction from Jinxuan summer green tea. The summer green tea extract prepared under the optimal conditions had a higher antitumor activity against human gastric cancer SGC-7901 cells than the green tea extract made with traditional tea brewing method
Effect of hydrogen sulfide on surface pitting and related with cell wall metabolism in sweet cherry during cold storage
Get PDFThis study was to determine whether postharvest H2S fumigation effects surface pitting development of ‘Lapins’ and ‘Regina’ cherries after cold storage, and if so, how H2S takes participate in minimizing pitting injury and its relation to cell wall metabolism. Fruit were exposed to hydrogen sulfide (H2S) gas released from sodium hydrosulfide (NaHS at rates of 0.5, 1, 2, or 3 mM), then stored at 0 °C for 4 weeks. Fruit treated with 1 and 2 mM NaHS in both cultivars had the significantly higher firmness and lower respiration rate than the control fruit. However, no treatment retarded the losses in soluble solids content (SSC) and titratable acidity (TA). After 4 weeks of storage, H2S suppressed stem browning, decay, and surface pitting, but it did not affect the weight loss. The greater positive effect of H2S for reducing surface pitting development was due to the lower yields of water-soluble polysaccharides (WSP) and CDTA-soluble polysaccharides (CSP) and the inhibited activities of polygalacturonase (PG), pectate lyase (PL), and β-D-galactosidase (β-GAL). Overall, results demonstrated that H2S applied as postharvest vapor is an effective tool to control surface pitting development in sweet cherry with protected cell wall structure and reduction of cell wall metabolism
2nd International Plant Spectroscopy Conference (IPSC-2019), March 25-28, 2019 in Berlin (Germany)
No full textDear colleagues,
it is an honor to invite you to participate in the 2nd International Plant Spectroscopy Conference (IPSC-2019) which will be held in Berlin, Germany, March 25-28, 2019 (http://ipsc-2019.julius-kuehn.de/)
The conference brings together internationally renowned spectroscopists and plant scientists. The meeting will gather experts from fundamental to applied research and will highlight applications from academia to industry. New developments in various fields of spectroscopy and their application in plant sciences will be presented and discussed.
Registration is already open. Deadline for abstract submission and early-bird registration/ payment is October 31, 2018. Deadline for regular registration is December 31, 2018 (late registration will cost additional processing fee). Conference venue is the Henry Ford Building of the Freie Universitaet in Berlin. It provides a modern lecture hall and a large foyer for coffee breaks, exhibition and poster demonstration. Exhibitors of analytical instruments are welcome and will receive detailed information on request.
Since we want to keep conference fees as low as possible, especially for young scientists, we are dependent on attracting suitable sponsors who are willing to support the conference financially. Depending on the sponsorship contribution you have made, you can then claim individual benefits listed in the corresponding sponsorship agreement: https://ipsc-2019.julius-kuehn.de/sponsoring.html. I would be delighted to personally welcome you to IPSC-2019 in Berlin next March. If you have any questions about our conference and the sponsoring, I am at your disposal.
Titles of Plenary and Invited Lectures
"Miniaturization in vibrational spectroscopy: state-of-the-art instrumentation and novel applications" (Heinz Siesler)
"Raman imaging of plant cell wall: where do we stand and how to move forward" (Notburga Gierlinger)
"Raman microscopy combined with AFM to get a deeper insight into complex biological samples" (Malgorzata Baranska)
"Multivariate analytical strategies for spectral data of plants" (Andras Gorzsas)
"Experimental design considerations for developing spectroscopic calibrations of plant materials" (Claudia Beleites)
"Cheminformatics tools to query metabolomics across species, genotypes and metabolic modules" (Oliver Fiehn)
"NMR in plant science - methods and selected examples" (Bernd Schneider)
"An overview of NMR applications in metabolite profiling of small molecules for plant metabolism studies" (Catherine Deborde)
"Hyperspectral imaging in combination with chemometric data analysis - a powerful duo in the quality control of herbal medicines" (Ilze Vermaak)
"Recent advances in vibrational spectroscopic imaging studies of medicinal plants" (Christian Huck)
The conference dinner will combine a 4-hour boat trip on the river Spree through the city center of Berlin with culinary delights in a relaxed setting. For more information and registration, visit us at https://ipsc-2019.julius-kuehn.de/
We are looking forward to seeing you in Berlin!
On behalf of the international scientific and the local organizing committee,
Dr. Hartwig Schulz Journal of Applied Botany and Food Quality - Editor-in-Chief
Direktor und Professor Julius Kühn-Institut (JKI) Bundesforschungsinstitut für Kulturpflanzen Institut für ökologische Chemie, Pflanzenanalytik und Vorratsschutz Königin-Luise-Straße 19 14195 Berlin (Germany
