Die Flavonoid-Muster der knollentragenden Solanum-Arten I. Charakterisierung der Flavonoid-Glycoside

1979 ◽  
Vol 95 (3) ◽  
pp. 239-253 ◽  
Author(s):  
Hans Reznik ◽  
Günter Wietschel
Keyword(s):  
2021 ◽  
Vol 11 (5) ◽  
Author(s):  
Guoju Hong ◽  
Zhenqiu Chen ◽  
Xiaorui Han ◽  
Lin Zhou ◽  
Fengxiang Pang ◽  
...  

Molecules ◽  
2021 ◽  
Vol 26 (2) ◽  
pp. 494
Author(s):  
Susanne Neugart ◽  
Christiane Bumke-Vogt

Recently, there have been efforts to use ultraviolet-B radiation (UV-B) as a biotechnological tool in greenhouses. Leafy Brassica species are mainly considered for their ability to synthesize glucosinolates and are valued as baby salads. They also have a remarkable concentration of chemically diverse flavonoid glycosides. In this study, the effect of short-term UV-B radiation at the end of the production cycle was investigated without affecting plant growth. The aim was to verify which exposure and adaptation time was suitable and needs to be further investigated to use UV as a biotechnological tool in greenhouse production of Brassica species. It is possible to modify the flavonoid glycoside profile of leafy Brassica species by increasing compounds that appear to have potentially high antioxidant activity. Exemplarily, the present experiment shows that kaempferol glycosides may be preferred over quercetin glycosides in response to UV-B in Brassica rapa ssp. chinensis, for example, whereas other species appear to prefer quercetin glycosides over kaempferol glycosides, such as Brassica oleracea var. sabellica or Brassica carinata. However, the response to short-term UV-B treatment is species-specific and conclusions on exposure and adaptation time cannot be unified but must be drawn separately for each species.


2011 ◽  
Vol 47 (4) ◽  
pp. 545-546 ◽  
Author(s):  
Chun-Chao Zhao ◽  
Jian-Hua Shao ◽  
Chun-Jie Zhao ◽  
Xian Li
Keyword(s):  

1975 ◽  
Vol 11 (3) ◽  
pp. 364-366
Author(s):  
M. D. Alaniya ◽  
N. F. Komissarenko ◽  
É. P. Kemertelidze
Keyword(s):  

1972 ◽  
Vol 8 (2) ◽  
pp. 239-239
Author(s):  
É. V. Gella ◽  
N. P. Beshko ◽  
T. P. Popova ◽  
V. I. Litvinenko
Keyword(s):  

2013 ◽  
Vol 25 (4) ◽  
pp. 2335-2336 ◽  
Author(s):  
Weiming Cheng ◽  
Xiaqian Cheng ◽  
Yongchi Zeng ◽  
Wenting Zhang

2016 ◽  
Vol 30 (20) ◽  
pp. 2278-2284 ◽  
Author(s):  
Jin-Dong Zhong ◽  
Yue Feng ◽  
Hong-Mei Li ◽  
Xue-Shan Xia ◽  
Rong-Tao Li
Keyword(s):  

2015 ◽  
Vol 11 ◽  
pp. 1220-1225 ◽  
Author(s):  
Qinggang Mei ◽  
Chun Wang ◽  
Zhigang Zhao ◽  
Weicheng Yuan ◽  
Guolin Zhang

The hemisynthesis of the naturally occurring bioactive flavonoid glycoside icariin (1) has been accomplished in eleven steps with 7% overall yield from kaempferol. The 4′-OH methylation of kaempferol, the 8-prenylation of 3-O-methoxymethyl-4′-O-methyl-5-O-prenyl-7-O-benzylkaempferol (8) via para-Claisen–Cope rearrangement catalyzed by Eu(fod)3 in the presence of NaHCO3, and the glycosylation of icaritin (3) are the key steps.


1993 ◽  
Vol 23 (4) ◽  
pp. 611-616 ◽  
Author(s):  
Daniela Heimler ◽  
Andrea Pieroni ◽  
Lorenzo Mittempergher ◽  
Pietro Buzzini

The utilization of elm leaf flavonoids as biochemical markers for the identification of artificial and natural hybrids of elm species is discussed. Two to 11 individuals from controlled crosses of Ulmuscarpinifolia Gled., Ulmuspumila L., Ulmusparvifolia Jacq., and Ulmusjaponica (R.) Sarg. were examined. Five to seven individuals from each parental species, and a number of putative hybrids between U. carpinifolia and U. pumila that naturally occur in central and northern Italy, were also examined. Quantitative data on leaf flavonoid glycosides were obtained by means of high-performance thin layer chromatography and examined by multivariate discriminant analysis. The results show that it is possible to identify the hybrid obtained between these species even if the parents are unknown, provided a number of individuals of the parental species are examined; therefore, it is also possible to certify putative hybrids. The higher variability of the flavonoid glycoside data of U. carpinifolia and U. pumila and the probable presence of F2 generation individuals make the certification of natural hybrids between these two species in some cases difficult or even impossible.


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