Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Flavonol triglycosides containing galactose in tea.

A Finger1, U H Engelhardt, V Wray

  • 1Institut für Lebensmittelchemie der Technischen Universität, Braunschweig, Germany.

Phytochemistry
|January 1, 1991
PubMed
Summary

New quercetin and kaempferol triglycosides were identified in Camellia sinensis. These compounds, quercetin 3-glucosylrhamnosylgalactoside and kaempferol 3-glucosylrhamnosylgalactoside, were quantified in the plant material.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Author Correction: Significant plastic accumulation on the Cocos (Keeling) Islands, Australia.

Scientific reports·2023
Same author

<i>In ovo</i> application of a live infectious bursal disease vaccine to commercial broilers confers proper immunity.

Avian pathology : journal of the W.V.P.A·2021
Same author

Significant plastic accumulation on the Cocos (Keeling) Islands, Australia.

Scientific reports·2019
Same author

Ana o 3-specific IgE is a good predictor for clinically relevant cashew allergy in children.

Allergy·2016
Same author

The role of the bursa of Fabricius in the immune response to vaccinal antigens and the development of immune tolerance in chicks (Gallus domesticus) vaccinated at a very young age.

Poultry science·2016
Same author

Diagnostic opportunities for evaluation of the exposure of dairy cows to the mycotoxins deoxynivalenol (DON) and zearalenone (ZEN): reliability of blood plasma, bile and follicular fluid as indicators.

Journal of animal physiology and animal nutrition·2015

Area of Science:

  • Phytochemistry
  • Natural Products Chemistry

Background:

  • Camellia sinensis (tea plant) is a rich source of bioactive flavonoids.
  • Flavonoid glycosides, particularly those derived from quercetin and kaempferol, are known for their diverse health benefits.
  • Understanding the specific glycosidic structures and their distribution is crucial for assessing the plant's phytochemical profile.

Purpose of the Study:

  • To isolate and determine the chemical structures of novel triglycosides from Camellia sinensis.
  • To quantify the amounts of the identified quercetin and kaempferol triglycosides in the plant.

Main Methods:

  • Isolation of target compounds using chromatographic techniques.
  • Structural elucidation employing spectroscopic methods (e.g., NMR, Mass Spectrometry).
  • Quantification of isolated compounds using established analytical methods.

Related Experiment Videos

Main Results:

  • Two new triglycosides were isolated and characterized: quercetin 3-glucosyl(1----3)rhamnosyl(1----6)galactoside and kaempferol 3-glucosyl(1----3)rhamnosyl(1----6)galactoside.
  • The content of the quercetin triglycoside ranged from 0 to 87 mg/100 g dry weight.
  • The content of the kaempferol triglycoside ranged from 0 to 119 mg/100 g dry weight.

Conclusions:

  • The study successfully identified and structurally confirmed new quercetin and kaempferol triglycosides in Camellia sinensis.
  • The variable concentrations of these specific glycosides highlight the phytochemical diversity within the tea plant.
  • These findings contribute to the detailed chemical understanding of Camellia sinensis constituents.