Ulmus rubra (bark)

Nomenclature

Ulmus rubra Muhl.   Ulmaceae  
Syn. Ulmus fulva Michx.  
Standardized common name (English): slippery elm

High Performance Thin Layer Chromatographic Identification

Ulmus rubra HPTLC ID - Natural Product Reagent + PEG-> UV 365 nm Slippery Elm (bark) (Ulmus rubra) Lane Assignments Lanes, from left to right (Track, Volume, Sample): 3 μL Ulmus rubra-1 (bark) 3 μL Ulmus rubra-2 (bark) 3 μL Ulmus rubra-3 (bark) 3 μL Ulmus rubra-4 (bark) 3 μL Ulmus rubra-4 (bark) 3 μL Ulmus rubra-5 (bark) 3 μL Ulmus rubra-6 (bark) 1 μL Rutin, Caffeic acid, Hyperoside, Chlorogenic Acid ~0.1% in CH3OH Reference materials used here have been authenticated by macroscopic, microscopic &/or TLC studies according to the reference source cited below held at Alkemists Laboratories, Costa Mesa, CA.  Stationary Phase Silica gel 60, F254, 10 x 10 cm HPTLC plates  Mobile Phase ethyl acetate: glacial acetic acid: formic acid: water [10/1.1/1.1/2.4]  Sample Preparation Method 0.3 g + 3 ml CH3OH sonicate/heat @ 50° C ~ 1 hr.  Detection Method Natural Product Reagent + PEG-> UV 365 nm  Reference see British Herbal Pharmacopoeia, 1996 Source: Elan M. Sudberg, Alkemist Laboratories