PMID: 11902913Mar 21, 2002Paper

Determination of hydrolyzable tannins (gallotannins and ellagitannins) after reaction with potassium iodate

Journal of Agricultural and Food Chemistry
Paul W HartzfeldA E Hagerman

Abstract

A widely used method for analyzing hydrolyzable tannins afer reaction with KIO(3) has been modified to include a methanolysis step followed by oxidation with KIO(3). In the new method, hydrolyzable tannins (gallotannins and ellagitannins) are reacted at 85 degrees C for 20 h in methanol/sulfuric acid to quantitatively release methyl gallate. Dried plant samples can be methanolyzed under the same conditions to convert hydrolyzable tannins to methyl gallate. Oxidation of the methyl gallate by KIO(3) at pH 5.5, 30 degrees C, forms a chromophore with lambda(max) 525 nm, which is determined spectrophotometrically. The detection limit of the method is 1.5 microg of methyl gallate, and with plant samples, relative standard deviations of less than 3% were obtained.

References

Mar 1, 1988·Analytical Biochemistry·K H Inoue, A E Hagerman
Jun 1, 1989·Journal of Chemical Ecology·A E Hagerman, L G Butler

❮ Previous
Next ❯

Citations

Sep 27, 2003·Phytochemical Analysis : PCA
Dec 25, 2007·Applied Microbiology and Biotechnology·Antonio Aguilera-CarboCristóbal N Aguilar
Nov 18, 2006·Journal of Chemical Ecology·Klaas G J Nierop, Jacobus M Verstraten
Jul 14, 2010·Plant Foods for Human Nutrition·Sara BensadónIsabel Goñi
Jan 15, 2013·The British Journal of Nutrition·Patricia López-AndrésIrene Mueller-Harvey
Jun 2, 2011·Journal of Agricultural and Food Chemistry·Sylwia GorlachMaria Koziołkiewicz
Nov 11, 2011·Journal of Agricultural and Food Chemistry·Jara Pérez-Jiménez, Josep Lluís Torres
May 10, 2012·Journal of Agricultural and Food Chemistry·Adriana Soto-VacaJohn W Finley
Feb 9, 2012·International Journal of Molecular Sciences·Eva M Grajales-GarcíaLuis A Bello-Pérez
May 30, 2013·Plant Foods for Human Nutrition·María de Lourdes García-MagañaMiguel Mata-Montes de Oca
Jun 4, 2014·Environmental Science and Pollution Research International·Ganesan KrishnamoorthyAsit Baran Mandal
Oct 17, 2015·International Journal of Food Sciences and Nutrition·Jara Pérez-JiménezFulgencio Saura-Calixto
Feb 23, 2013·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Ali KhoddamiThomas H Roberts
Jan 26, 2016·Journal of Agricultural and Food Chemistry·Andrew G NewsomeRichard B van Breemen
May 23, 2013·Food Chemistry·Alessandra DurazzoMarina Carcea
Sep 15, 2009·Phytomedicine : International Journal of Phytotherapy and Phytopharmacology·L M BedoyaP Bermejo
May 14, 2009·Molecular Nutrition & Food Research·José SerranoFulgencio Saura-Calixto
Oct 18, 2008·American Journal of Primatology·Jessica M RothmanAlice N Pell
Aug 6, 2013·Journal of the Science of Food and Agriculture·Sonia G Sáyago-AyerdiIsabel Goñi
Oct 21, 2015·Plant Foods for Human Nutrition·Jara Pérez-JiménezFulgencio Saura-Calixto
Sep 8, 2012·Food Chemistry·Panagiotis Arapitsas
Aug 11, 2016·Journal of the Science of Food and Agriculture·Cristina Guerra-RivasTeresa Manso
Nov 5, 2016·Journal of the Science of Food and Agriculture·Miriam C Jiménez-MartínezMaria A Vivar-Vera
Oct 28, 2017·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Andrzej CendrowskiMarta Mitek
Apr 12, 2018·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Xi-Juan YangMing-Tao Fan
Sep 15, 2017·Food & Function·Luz Abril Herrera-CazaresMarcela Gaytán-Martínez
Dec 27, 2017·International Journal of Food Sciences and Nutrition·Victor Manuel Zamora-GasgaSonia Guadalupe Sáyago-Ayerdi
Dec 21, 2017·Food Science and Technology International = Ciencia Y Tecnología De Los Alimentos Internacional·Claudia PerezAna Curutchet
Oct 23, 2010·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Jin Dai, Russell J Mumper
May 8, 2019·International Journal of Food Sciences and Nutrition·Iza F Pérez-RamírezJara Pérez-Jiménez

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.