PT  - JOURNAL ARTICLE
AU  - J. D. McCord
AU  - E. Trousdale
AU  - Dewey D. Y. Ryu
TI  - An Improved Sample Preparation Procedure for the Analysis of Major Organic Components in Grape Must and Wine by High Performance Liquid Chromatography
AID  - 10.5344/ajev.1984.35.1.28
DP  - 1984 Jan 01
TA  - American Journal of Enology and Viticulture
PG  - 28--29
VI  - 35
IP  - 1
4099  - http://www.ajevonline.org/content/35/1/28.short
4100  - http://www.ajevonline.org/content/35/1/28.full
SO  - Am J Enol Vitic.1984 Jan 01; 35
AB  - A rapid sample preparation method for the quanitation of major organic compounds contained in grape musts and wines by HPLC has been developed. Samples are prepared through the use of an intermediate anion ion exchange resin employed to separate the normally co-eluting compounds fructose and malic acid into two fractions. The ion exchange resin is pressure packed into a cartridge type resin bed holder which allowed sample application and elution of compounds by the application of pressure applied through an attached syringe. The cartridge system shorterns sample preparation time to less than 10 minutes per sample. Recoveries of all major compounds in model solutions, Colombard must and Chardonnay wine, were shown to be 91% or better typically better than 95%.