TAPPI T532 PDF

Starch Consumption in Corrugated Board (Enzymatic/Colorimetric Method)

TAPPI T532 – Starch Consumption in Corrugated Board (Enzymatic/Colorimetric Method)

The colorimetric adaptation of a simple laboratory test to measure the weight of starch present in the combining adhesive per unit area of corrugated board is described. It involves dissolving the starch in the corrugating adhesive with an enzymatic solution and colorimetrically determining the reducing dextrines and sugars produced by the enzymatic conversion. The method permits separate measurements of the adhesive at the double-face and single-face locations.The basic enzymatic/gravimetric method, which yields statistically lower values, is described in TAPPI T 531 “Starch Consumption in Corrugated Board (Enzymatic/Gravimetric Method).”