UV Radiation Dependent Flavonoid Accumulation of Cistus laurifolius L

1991 ◽  
Vol 46 (1-2) ◽  
pp. 37-42 ◽  
Author(s):  
Thomas Vogt ◽  
Paul-Gerhard Gülz ◽  
Hans Reznik
Keyword(s):  
Uv Radiation ◽  
Flavonoid Glycoside ◽  
Flavonoid Glycosides ◽  
Field Exposure ◽  
Flavonoid Aglycones ◽  
Flavonoid Accumulation

Abstract Epicuticular and in tracellular flavonoids of Cistus laurifolius grown with and without UV radiation in a phytotron as well as under natural garden conditions in the field were studied. The amount of intracellular flavonoid glycosides of leaves receiving UV -A radiation was two fold higher than that measured in the absence of UV -A radiation , whether grown in the phyto­tron or in the field. Exposure of previously protected leaves to UV -A radiation increased the intracellular flavonoid glycoside content to that of unprotected leaves. The qualitative com­position of intracellular flavonoid glycosides showed a reduced amount of quercetin-3-galactoside to the myricetin monosides when the leaves were grown without UV-A radiation in the field and in the phytotron . Epicuticular flavonoid aglycones were not influenced by UV radiation significantly.

scholarly journals The Impact of Citrus-Tea Cofermentation Process on Chemical Composition and Contents of Pu-Erh Tea: An Integrated Metabolomics Study

2021 ◽  
Vol 8 ◽  
Author(s):  
Ya Xu ◽  
Pu-Lin Liang ◽  
Xue-Lian Chen ◽  
Ming-Jiong Gong ◽  
Liang Zhang ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Phenolic Acids ◽  
High Performance ◽  
Principal Component ◽  
Flavonoid Glycoside ◽  
Flavonoid Glycosides ◽  
Chemical Profile ◽  
Potential Health ◽  
Flavonoid Aglycones ◽  
The Impact

Ganpu tea, an emerging pu-erh compound tea, which is cofermented with the peel of Citrus reticulata “Chachi,” has been widely favored by Chinese consumers due to its potential health effects and distinct flavor and taste. So far, the influence of this cofermentation procedure on the chemical profile of pu-erh tea has barely been addressed yet. In this work, an ultra-high-performance liquid chromatography-Q Exactive Orbitrap mass spectrometry (UHPLC-QE Orbitrap MS)-based qualitative and quantitative method combined with multivariate analysis was conducted to comprehensively investigate the chemical changes in pu-erh tea after cofermented with Citrus peel. A total of 171 compounds were identified based on a three-level strategy, among which seven phenolic acids, 11 flavan-3-ols, and 27 flavonoids and flavonoid glycosides were identified from pu-erh tea for the first time. Eighty-nine main constituents were selected for further quantitative analysis using a validated method. Both the principal component analysis (PCA) of untargeted metabolomics and orthogonal partial least squares discriminant analysis (OPLS-DA) models of targeted components revealed the significant chemical profile disparity between the raw pu-erh tea and Ganpu tea. It showed that Citrus tea cofermentation process significantly decreased the total contents of phenolic acids, flavan-3-ols, and flavonoid aglycones, while most of the quercetin glycosides and myricetin glycosides as well as the vitexin were significantly increased. In addition, hesperidin, a flavonoid glycoside only existed in Citrus, was first found in pu-erh tea after cofermented with Citrus. This study clearly profiled the chemical composition and content changes of pu-erh tea after cofermented with Citrus peel, which revealed that Citrus tea cofermentation process further accelerated the fermentation of pu-erh tea and improved the unique flavor of tea.

scholarly journals Flavonoid Glycosides in Brassica Species Respond to UV-B Depending on Exposure Time and Adaptation Time

Molecules ◽  
2021 ◽  
Vol 26 (2) ◽  
pp. 494
Author(s):  
Susanne Neugart ◽  
Christiane Bumke-Vogt
Keyword(s):  
Brassica Species ◽  
Flavonoid Glycoside ◽  
Ultraviolet B ◽  
Flavonoid Glycosides ◽  
Production Cycle ◽  
Short Term ◽  
Greenhouse Production ◽  
Adaptation Time ◽  
Quercetin Glycosides ◽  
Kaempferol Glycosides

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.

scholarly journals Bioconversion of Flavonoid Glycosides from Hippophae rhamnoides Leaves into Flavonoid Aglycones by Eurotium amstelodami

2019 ◽  
Vol 7 (5) ◽  
pp. 122 ◽  
Author(s):  
Qiuya Gu ◽  
Guoliang Duan ◽  
Xiaobin Yu
Keyword(s):  
Antioxidative Activity ◽  
Hippophae Rhamnoides ◽  
Flavonoid Glycosides ◽  
Total Phenolic ◽  
Total Phenolic Compounds ◽  
Flavonoid Aglycones ◽  
Hippophaë Rhamnoides ◽  
Tea Industry ◽  
Functional Factors ◽  
Flowering Process

The flowering process has been reported to play crucial roles in improving the flavor and efficacy of fermented tea. Hippophae rhamnoides leaves containing many beneficial ingredients are a suitable plant source for tea processing. In this study, we isolated a β-glucosidase-producing fungus Eurotium amstelodami BSX001 from the fermented tea and used Hippophae rhamnoides leaves (HRL) as a substrate to explore the detailed process of bioconversion of some important functional factors. The results show that the contents of total phenolic compounds and flavonoids increased significantly after seven days, especially flavonoid aglycones (e.g., quercetin, kaempferol, and isorhamnetin). Such compounds greatly enhance the antioxidative activity of fermented products. Metabolic analysis of the standard compounds (rutin, quercetin-3-glucoside, kaempferol-3-glucoside, quercetin, isorhamnetin-3-glucoside, isorhamnetin, and kaempferol) further confirmed the effective biotransformation by E. amstelodami. Mechanisms of the bioconversion could be involved in deglycosylation, dihydroxylation, and O-methylation. Our findings expand the understanding of tea fermentation process and provide further guidance for the fermented tea industry.

The use of flavonoid glycosides for the identification of elm hybrids

1993 ◽  
Vol 23 (4) ◽  
pp. 611-616 ◽  
Author(s):  
Daniela Heimler ◽  
Andrea Pieroni ◽  
Lorenzo Mittempergher ◽  
Pietro Buzzini
Keyword(s):  
High Performance ◽  
Parental Species ◽  
Flavonoid Glycoside ◽  
Flavonoid Glycosides ◽  
Natural Hybrids ◽  
Probable Presence ◽  
Multivariate Discriminant ◽  
Number Of Individuals ◽  
Layer Chromatography ◽  
Putative Hybrids

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.

Polyphenols in Representative Teucrium Species in the Flora of R. Macedonia: LC/DAD/ESI-MSn Profile and Content

2014 ◽  
Vol 9 (2) ◽  
pp. 1934578X1400900 ◽  
Author(s):  
Ilija Mitreski ◽  
Jasmina Petreska Stanoeva ◽  
Marina Stefova ◽  
Gjoshe Stefkov ◽  
Svetlana Kulevanova
Keyword(s):  
Phenolic Compounds ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Flavonoid Glycosides ◽  
Total Phenolic ◽  
Phenylethanoid Glycosides ◽  
Systematic Analysis ◽  
Flavonoid Aglycones ◽  
Phenolic Profiles ◽  
Polyphenolic Profile

In the present work, the polyphenolic profile and content of four Teucrium species ( T. chamaedrys L., T. montanum L., T. polium L., T. scordium L.) from the Macedonian flora were examined. A LC/DAD/ESI-MS n chromatographic method was optimized and 31 phenolic compounds were identified, quantified and classified into four groups: hydroxycinnamic acid derivatives (2), phenylethanoid glycosides (12), flavonoid glycosides (11) and flavonoid aglycones (6). The total phenolic content (mg/g dry herb) ranged from 28.2 ( T. montanum), 30.9 ( T. scordium), 35.1 ( T. polium) to 52.1 ( T. chamaedrys). Phenylethanoid glycosides were the predominant group of polyphenols in the studied samples contributing 60% of the total phenolic content for T. polium and T. scordium and around 90% for T. montanum and T. chamaedrys. The systematic analysis for identification and quantification of all present phenolic compounds contributes to the chemotaxonomy of the investigated Teucrium species and to the valorization based on their phenolic profiles and content.

scholarly journals Study of the mechanism of change in flavonoid composition in the processing of Chrysanthemum morifolium (Ramat.) Tzvel. ‘Boju’

BMC Chemistry ◽  
2019 ◽  
Vol 13 (1) ◽  
Author(s):  
Wei Zhang ◽  
Yafeng Zuo ◽  
Fengqing Xu ◽  
Tongsheng Wang ◽  
Jinsong Liu ◽  
...  
Keyword(s):  
Chrysanthemum Morifolium ◽  
Flavonoid Glycoside ◽  
Processing Method ◽  
Enzymatic Properties ◽  
Water Bath ◽  
Flavonoid Glycosides ◽  
Heat Activation ◽  
Flavonoid Composition ◽  
Chrysanthemum Morifolium Ramat

Abstract A form of β-glucosidase was isolated and purified from fresh Chrysanthemum morifolium (Ramat.) Tzvel. ‘Boju’ (Boju) and its enzymatic properties explored in this study. The purified enzyme and Boju flavonoids were reacted in a water bath to ascertain the composition of the reactants. Flavonoid glycoside and aglycon concentrations in Boju varied significantly depending on processing method. The concentration of flavonoid glycosides in Boju decreased and flavonoid aglycons increased due to heat-activation of β-glucosidase which hydrolyzed the flavonoid glycosides in Boju to aglycons.

scholarly journals Functional characterization of three flavonoid glycosyltransferases from Andrographis paniculata

2019 ◽  
Vol 6 (6) ◽  
pp. 190150 ◽  
Author(s):  
Yuan Li ◽  
Xin-Lin Li ◽  
Chang-Jiang-Sheng Lai ◽  
Rui-Shan Wang ◽  
Li-Ping Kang ◽  
...  
Keyword(s):  
Functional Characterization ◽  
Biochemical Properties ◽  
Flavonoid Glycoside ◽  
Andrographis Paniculata ◽  
Biologically Active ◽  
Flavonoid Glycosides ◽  
Asian Countries ◽  
Pharmacological Activities ◽  
Different Types

Andrographis paniculata is an important traditional medicinal herb in South and Southeast Asian countries with diverse pharmacological activities that contains various flavonoids and flavonoid glycosides. Glycosylation can transform aglycones into more stable, biologically active and structurally diverse glycosides. Here, we report three glycosyltransferases from the leaves of A. paniculata (ApUFGTs) that presented wide substrate spectra for flavonoid glycosylation and exhibited multi-site glycosylation on the substrate molecules. They acted on the 7-OH position of the A ring and were able to glycosylate several other different types of compounds. The biochemical properties and phylogenetic analysis of these glycosyltransferases were also investigated. This study provides a basis for further research on the cloning of genes involved in glycosylation from A. paniculata and offers opportunities for enhancing flavonoid glycoside production in heterologous hosts. These enzymes are expected to become effective tools for drug discovery and for the biosynthesis of derivatives via flavonoid glycosylation.

Flavonoids from Vicia faba Seed Exudates

1990 ◽  
Vol 45 (9-10) ◽  
pp. 1070-1072 ◽  
Author(s):  
Francisco Tomás-Lorente ◽  
Manuela M. Garcia-Grau ◽  
Francisco A. Tomás-Barberán
Keyword(s):  
Vicia Faba ◽  
Flavonoid Glycosides ◽  
Signal Function ◽  
Ecological Role ◽  
Legume Seed ◽  
Nod Genes ◽  
Flavonoid Aglycones ◽  
Vicia Faba L ◽  
First Time ◽  
Rhizobium Nodulation

Abstract From the seed exudates of Vicia faba L. (cv. Muchamiel) the flavonoid aglycones 7,3′,4′-trihydroxyflavone, 7,4′-dihydroxyflavone, quercetin and kaempferol, and the flavonoid glycosides quercetin 7-glucoside and kaempferol 7-glucoside were identified. This is the first time that the flavonoids present in Vicia seed exudates are described. The study of the flavonoids present in legume seed and root exudates is especially important since these substances may act as chemical signals activating or inhibiting Rhizobium nodulation genes. In fact, the activating effect on Rhizobium nod genes of 7,3′,4′-trihydroxyflavone and 7,3′-dihydroxyflavone has previously been reported. It is remarkable, that these compounds increase dramatically in mature pods, and these tissues might have an additional ecological role in the signal function on Rhizobium to establish the symbiosis

A New Triterpenoid Saponin from Ononis spinosa and Two New Flavonoid Glycosides from Ononis vaginalis

2004 ◽  
Vol 59 (1) ◽  
pp. 124-128 ◽  
Author(s):  
Kamel H. Shaker ◽  
Katja Dockendorff ◽  
Mirko Bernhardt ◽  
Karlheinz Seifert
Keyword(s):  
Nmr Spectroscopy ◽  
Flavonoid Glycoside ◽  
Flavonoid Glycosides ◽  
Triterpenoid Saponin ◽  
Nmr Signals

Abstract The new triterpenoid saponin 3-O-[α-L-rhamnopyranosyl-(1→2)-β -D-xylopyranosyl-(1→2)- β -D-glucuronopyranosyl]-3β ,22α-dihydroxyolean-13-en-11-one has been isolated from Ononis spinosa. The new flavonoid glycoside 3-O-[2-O-(E)-p-coumaroyl-β -D-galactopyranosyl]-7-O-β - D-glucopyranosylkaempferol and the new pterocarpan glucoside 3,4-di-O-β -D-glucopyranosyl-4- hydroxymedicarpin have been obtained from Ononis vaginalis. The structures were determined primarily by NMR spectroscopy. The assignment of NMR signals was performed by means of 1H-1H COSY, ROESY, TOCSY, HMQC HMQC-COSY and HMBC experiments.

scholarly journals Rapid Analysis of the Main Components of the Total Glycosides of Ranunculus japonicus by UPLC/Q-TOF-MS

2010 ◽  
Vol 5 (5) ◽  
pp. 1934578X1000500
Author(s):  
Wen Rui ◽  
Hongyuan Chen ◽  
Yuzhi Tan ◽  
Yanmei Zhong ◽  
Yifan Feng
Keyword(s):  
Relevant Literature ◽  
Ultra Performance Liquid Chromatography ◽  
Flavonoid Glycosides ◽  
Complex Samples ◽  
Flavonoid Aglycones ◽  
Flight Mass Spectrometry ◽  
Fragment Ions ◽  
Main Components ◽  
Acquity Uplc ◽  
Tof Ms

A rapid method for the analysis of the main components of the total glycosides of Ranunculus japonicus (TGOR) was developed using ultra-performance liquid chromatography with quadrupole-time-of-flight mass spectrometry (UPLC/Q-TOF-MS). The separation analysis was performed on a Waters Acquity UPLC system and the accurate mass of molecules and their fragment ions were determined by Q-TOF MS. Twenty compounds, including lactone glycosides, flavonoid glycosides and flavonoid aglycones, were identified and tentatively deduced on the basis of their elemental compositions, MS/MS data and relevant literature. The results demonstrated that lactone glycosides and flavonoids were the main constituents of TGOR. Furthermore, an effective and rapid pattern was established allowing for the comprehensive and systematic characterization of the complex samples.

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