Results 141 to 150 of about 9,680 (171)

[Study on steroidal compounds from Dioscorea zingiberensis].

Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials, 2007
To study the chemical constituents of Dioscorea zingiberensis.Manifold chromatography methods were used to separate the chemical constituents, and the chemical stuctures were determined by spectral analyses.6 compounds were isolated from Dioscorea zingiberensis and identified as deltonin, protodeltonin, zingiberensis newsaponin, dioscin, 3-O-[beta-D ...
Shi-Hui, Qian, Li-Hong, Yuan, Nian-Yun, Yang, Ping-Kai, Ouyang   +3 more
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[Study on fertillizer application techniques of annual Dioscoreae zingiberensis].

Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials, 2007
The experiment N,P and K fertilizer on Dioscorea zingiberensis were studied by setting fied parameter tests with rotational design. The selecton value of three agronomic factors were put forward by establishing regression mathematics models in the production and net value.
Wei-Ming, Liu, Ri-Zhao, Wang
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[Genetic stability study on autotetraploid plant of Dioscorea zingiberensis].

Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials, 2015
To study the genetic stability of autotetraploid plant of Dioscorea zingiberensis.The chromosome of root-tip was determined by photomicroscope, and the agronomic characters were observed in the period of stable growth. The protein content was determined and the experiment of protein polyacrylamide gel electrophoresis was carried out.
He-Ping, Huang, Shan-Lin, Gao, Lu-Qi, Huang, Dian-Lei, Wang, Peng, Huang   +4 more
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Qualitative and Quantitative Analysis of Microbial Transformation of Steroidal Saponins in Dioscorea zingiberensis

Chromatographia, 2009
Diosgenin is an important starting material in the steroidal hormone industry. In this paper diosgenin was obtained by biotransformation of steroidal saponins in Dioscorea zingiberensis with the fungus Aspergillus oryzae. In the pre- and post-biotransformed samples, five main steroidal saponins and the aglycone (diosgenin) were identified by ...
Shan-Shan Qi, Yue-Sheng Dong, Yang-Kun Zhao, Zhi-Long Xiu   +3 more
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[Study on inducing embryogenic callus of Dioscorea zingiberensis by orthogonal design].

Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials, 2014
To select the suitable medium to induce embryogenic callus of Dioscorea zingiberensis.Plantlet of Dioscorea zingiberesis in vitro was obtained by using apical meristem as explant. The different parts of the plantlets were cultured to select the best explant used for inducing callus and embryoids.
He-Ping, Huang, Shan-Lin, Gao, Lu-Qi, Huang, Peng, Huang, Dian-Lei, Wang   +4 more
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Agrobacterium-mediated transformation of Dioscorea zingiberensis Wright, an important pharmaceutical crop

Plant Cell, Tissue and Organ Culture (PCTOC), 2009
Dioscorea zingiberensis Wright has been cultivated as a pharmaceutical crop for production of diosgenin, a precursor for synthesis of various important steroid drugs. Because breeding of D. zingiberensis through sexual hybridization is difficult due to its unstable sexuality and differences in timing of flowering in male and female plants, gene ...
Qi Zhu, Fengtao Wu, Feng Ding, Dong Ye, Yongqin Chen, Yi Li, Yang Zhifan   +6 more
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[Research of steroidal saponins from the fresh rhizomes of Dioscorea zingiberensis].

Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials, 2011
To study the steroidal saponins from the fresh rhizomes of Dioscorea zingiberensis and search for new bioactive compounds.The steroidal saponins were isolated by normal phase silica gel and RP-C18 column chromatography, their chemical structures were elucidated by MS and NMR methods.One steroidal saponin was isolated from EtOH extract of the fresh ...
Ru-Tong, Yang, Hai-Ying, Tong
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[Studies on plantlet regeneration from the mature leaves of Dioscorea zingiberensis].

Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica, 2005
To establish a protocol of rapid clonal propagation of Dioscorea zingiberensis using mature leaves as explants.Out the optimal hormone combinations for callus induction, adventitious bud initiation, adventitious bud multiplication and rooting were found out by using MS medium with the macroelements at half strength as basal medium and studying the ...
Yong-qin, Chen, Jin-yu, Fan, Fei, Yi, Yun-sheng, Fu, Zhong-xun, Luo   +4 more
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[Isolation and structure determination of steroidal saponin from Dioscorea zingiberensis].

Yao xue xue bao = Acta pharmaceutica Sinica, 2009
To study the chemical constituents of Dioscorea zingiberensis Wright, the EtOH extract of fresh rhizomes of D. zingiberensis was concentrated and partitioned further to produce petroleum ether-, ethylacetate-, n-butanol- and water-soluble fractions. The water-soluble fraction was subjected to column chromatography on macro resin AB-8, and the final ...
De-ping, Xu, Chang-ying, Hu, Lei, Wei, Zi-jie, Pang   +3 more
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Conversion of Dioscorea zingiberensis Saponins to Prosapogenin a by Enzymatic Hydrolysis

Natural Product Research, 2023
Yuping Shen, Yufei Chen, Huan Yang
exaly