About Us | Help Videos | Contact Us | Subscriptions
 

Abstract

 

This article in CS

  1. Vol. 15 No. 6, p. 775-777
     
    Received: Feb 15, 1975


 View
 Download
 Alerts
 Permissions
Request Permissions
 Share

doi:10.2135/cropsci1975.0011183X001500060010x

Automated Hydrolysis of Nonreducing Sugars and Fructosans from Plant Tissue1

  1. D. D. Wolf and
  2. T. L. Ellmore2

Abstract

Abstract

Analytical procedures for chemical analysis of carbohydrates by measuring reducing power before and after hydrolysis, have been automated once the carbohydrates have been removed from the plant tissue. Sugars and fructosans were removed from forage tissue by hot water treatment. Reducing sugars in an aliquot were assayed by automated procedures without acid hydrolysis. Total water-soluble carbohydrates were measured with automated acid hydrolysis of the same aliquot. Nonreducing carbohydrates were calculated as the difference between total water-soluble carbohydrates and reducing sugars. Sucrose and fructosan were completely hydrolyzed during the 2 min. exposure to 0.2 N acid at 95 C that were the conditions in automated hydrolysis. However, starch, if present in the water solution, was not broken down by the automated hydrolysis procedure due to low acid concentration and short duration of exposure to heat.

Automated procedures increased lab efficiency, reduced routine errors, and eliminated filtration, pipetting, and manual dilution often required by most procedures.

  Please view the pdf by using the Full Text (PDF) link under 'View' to the left.

Copyright © .