Results 71 to 80 of about 191 (111)
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Elicitor-enhanced syringin production in suspension cultures of Saussurea medusa
World Journal of Microbiology and Biotechnology, 2006Syringin production and related secondary metabolism enzyme activities in suspension cultures of Saussurea medusa treated with different elicitors (yeast extract, chitosan and Ag+) were investigated. All elicitors enhanced syringin production, and the optimal feeding protocol was the combined addition of 1.5% (v/v) yeast extract, 0.2 g l(-1) chitosan ...
Chunming Xu +5 more
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Dynamic Microwave-Assisted Extraction of Arctigenin from Saussurea medusa Maxim.
Chromatographia, 2009Dynamic microwave-assisted extraction (DMAE) technique was used for the fast extraction from Saussurea medusa Maxim. In order to achieve the optimal extraction conditions, variables involved in the extraction procedure such as extraction methods, extraction solvents, methanol concentration, ratio of solvent to raw material, extraction time, microwave ...
Ruitao Yu +7 more
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Saussurea medusa Cell Suspension Cultures for Flavonoid Production
2009Saussurea medusa Maxim. is a valuable traditional Chinese herb. The flavonoids are the main active pharmaceutical compounds in this medicinal plant species and have effective anti-tumor and anti-inflammation properties. This species is now almost extinct in China because of over-exploitation.
Chun-Zhao, Liu, Praveen K, Saxena
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Anti-tumor-promoting activity of lignans from the aerial part of Saussurea medusa
Cancer Letters, 2000In the course of our continuing search for novel cancer chemopreventive agents from natural sources, several kinds of Compositae plants were screened. Consequently, the lignans, arctiin (ARC) and arctigenin (ARC-G), were obtained from the aerial part of Saussurea medusaas active constituents.
M, Takasaki +4 more
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Applied Biochemistry and Biotechnology, 2006
Cell cultures of Saussurea medusa produce valuable secondary metabolites, and jaceosidin and hispidulin are the major bioactive compounds. In the present study, the cultures were challenged by methyl jasmonate (MJ). The highest jaceosidin and hispidulin concentrations (65.2 +/- 3.67 mg/L and 12.3 +/- 0.47 mg/L) were achieved with 5 microM MJ added to 9-
Chun-xiang, Fu +4 more
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Cell cultures of Saussurea medusa produce valuable secondary metabolites, and jaceosidin and hispidulin are the major bioactive compounds. In the present study, the cultures were challenged by methyl jasmonate (MJ). The highest jaceosidin and hispidulin concentrations (65.2 +/- 3.67 mg/L and 12.3 +/- 0.47 mg/L) were achieved with 5 microM MJ added to 9-
Chun-xiang, Fu +4 more
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Cloning and characterization of a flavanone 3-hydroxylase gene fromSaussurea medusa
DNA Sequence, 2005Flavanone 3-hydroxylase (F3H) is a key enzyme in the flavonoid biosynthetic pathway, providing a branching point for the biosynthesis of different flavonoids, including the formation of 3-deoxy and 3-hydroxy flavonoids found in the silks of maize. Here, we report the cloning and characterization of a F3H gene (Smf3h) from a cDNA library derived from a ...
Zhiping, Jin +4 more
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Salicylic Acid Enhances Jaceosidin and Syringin Production in Cell Cultures of Saussurea medusa
Biotechnology Letters, 2006Addition of 20 muM salicylic acid to Saussurea medusa cell cultures at day 6 resulted in jaceosidin and syringin productions up to 95 mg l(-1 )and 631 mg l(-1) which were, respectively, about 2.5- and 2.7-fold higher than in the control. The biomass was increased from 8 to 12 g l(-1).
Zhen-Zhen, Yu +4 more
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Cell culture of Saussurea medusa in a periodically submerged air-lift bioreactor
Biochemical Engineering Journal, 2004Cell culture of Saussurea medusa in a 2-1 periodically submerged air-lift bioreactor (PSAB) was investigated. The periodically unsubmerged (immobilization culture) and submerged (suspension culture) operation of the whole bioreactor system was controlled by the electromagnetic valves and driven rod controller connected with the time controller.
Xiaofan Yuan, Bing Zhao, Yuchun Wang
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Plant Cell, Tissue and Organ Culture, 2007
Anthocyanidin synthase (ANS, leucoanthocyanidin oxygenase), a 2-oxoglutarate iron-dependent oxygenase, catalyzes the penultimate step in the biosynthesis of the anthocyanin class of flavonoids, from the colorless leucoanthocyanidins to the colored anthocyanidins. Here, we report the cloning and characterization of an anthocyanidin Synthase gene (SmANS1)
Liqin Cheng +6 more
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Anthocyanidin synthase (ANS, leucoanthocyanidin oxygenase), a 2-oxoglutarate iron-dependent oxygenase, catalyzes the penultimate step in the biosynthesis of the anthocyanin class of flavonoids, from the colorless leucoanthocyanidins to the colored anthocyanidins. Here, we report the cloning and characterization of an anthocyanidin Synthase gene (SmANS1)
Liqin Cheng +6 more
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World Journal of Microbiology and Biotechnology, 2005
Room temperature, heat reflux, Soxhlet, ultrasound-assisted and microwave-assisted extractions were employed to extract flavonoids from dry cell cultures of Saussurea medusa Maxim. 24, 20, 6, 0.5 and 0.1 h exposures were necessary for room temperature, Soxhlet, heat reflux, ultrasound-assisted and microwave-assisted extractions to obtain the maximum ...
Chun-Zhao Liu
exaly +2 more sources
Room temperature, heat reflux, Soxhlet, ultrasound-assisted and microwave-assisted extractions were employed to extract flavonoids from dry cell cultures of Saussurea medusa Maxim. 24, 20, 6, 0.5 and 0.1 h exposures were necessary for room temperature, Soxhlet, heat reflux, ultrasound-assisted and microwave-assisted extractions to obtain the maximum ...
Chun-Zhao Liu
exaly +2 more sources