TM103-TM 103 Bacterial Alpha-Amylase Enzymes used in Desizing

Description

TEST METHODS ARE DELIVERED AS A LINK IN YOUR EMAILED RECEIPT.

AATCC TM103-2019, Test Method for Bacterial Alpha-Amylase Enzymes used in Desizing

14. History

14.1 Revised (with title change) in 2019 to align format with AATCC style.

14.2 Reaffirmed 2013. Editorially revised 2010. Reaffirmed 2009. Editorially revised 2008. Reaffirmed 2004. Revised 1999. Editorially revised and reaffirmed 1994. Editorially revised 1991. Editorially revised and reaffirmed 1989. Editorially revised 1986. Editorially revised 1985. Reaffirmed 1984. Reaffirmed 1979. Reaffirmed 1976. Reaffirmed 1973. Reaffirmed 1970. Reaffirmed 1965.

14.3 Developed in 1962 by AATCC Committee RR41. Jurisdiction transferred to RA34

in 1987, returned to RR41 in 1993. Currently maintained by RA99.

1. Purpose and Scope

1.1 This test method is intended for the assay of bacterial amylases employed commercially for textile desizing. It is not applicable to products which contain beta-amylase in addition to alpha-amylase.

2. Principle

2.1 Dextrogenic amylase activity is measured in terms of digestion time required to produce a color change denoting a definite stage of dextrinization of the starch substrate. The amylase content of the sample, expressed in Bacterial Amylase Units (BAU), is readily calculated from the dextrinizing time.

Copyright American Association of Textile Chemists and Colorists, RTP, NC, USA. All rights reserved.

The above information is only a summary of the AATCC test method.