BioNMR

BioNMR (http://www.bionmr.com/forum/)
-   News from NMR blogs (http://www.bionmr.com/forum/news-nmr-blogs-47/)
-   -   [U. of Ottawa NMR Facility Blog] NMR and Food Chemistry - Rhubarb (http://www.bionmr.com/forum/news-nmr-blogs-47/nmr-food-chemistry-rhubarb-27216/)

nmrlearner 06-19-2020 03:16 PM

NMR and Food Chemistry - Rhubarb
 
NMR and Food Chemistry - Rhubarb

Many gardeners here in Canada are currently harvesting their rhubarb to make pies and other desserts. Like cranberries, rhubarb is very sour due to the presence of organic acids. The leaves of the rhubarb plant contain so much oxalic acid that they are toxic. The stalks of the plant contain less oxalic acid and are not toxic (although I would argue that they taste awful). Oxalic acid is used in many cleaning products, so if you are like me and hate the taste of rhubarb, you can still make use of it as a cleaning agent. If you have a very dirty stainless steel pot, you can clean it by simply stewing rhubarb in it. The figure below shows the 1H and 13C NMR spectra of an aqueous extract of rhubarb stocks. The major constituents are organic acids with smaller quantities of sugars. Some of the 13C signals from oxalic, malic and citric acids are labelled.
http://feeds.feedburner.com/~ff/Univ...?d=yIl2AUoC8zA
http://feeds.feedburner.com/~r/Unive...~4/ThlrONtdNLc

Source: University of Ottawa NMR Facility Blog


All times are GMT. The time now is 02:01 AM.

Powered by vBulletin® Version 3.7.3
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
Copyright, BioNMR.com, 2003-2013