(Superseding IS 8162 : 1998 and IS 15470 : 2004)

NATIONAL FOREWORD

This Indian Standard (Part 4) which is identical with 1SO 21415-4 : 2006 ‘Wheat and wheat flour - Gluten content - Part 4: Determination of dry gluten from wet gluten by a rapid drying method’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendation of the Foodgrains, Allied Products and Other Agricultural Produce Sectional Committee and approval of the Food and Agriculture Division Council.

This standard consists of the following parts, under the general title ‘Wheat and wheat flour - Gluten content:

Part 1 Determination of wet gluten by a manual method

Part 2 Determination of wet gluten by mechanical means

Part 3 Determination of dry gluten from wet gluten by an oven drying method

Part 4 Determination of dry gluten from wet gluten by a rapid drying method

Earlier, this standard was published as IS 15470 : 2004 ‘Wheat flour - Determination of dry gluten’ adopting the corresponding International Standard ISO 6645 : 1981 under dual numbering system. ISO 21415-3 : 2006 together with ISO 21415 - 4 : 2006 has cancelled and replaced ISO 6645 : 1981, which has been technically revised.

The method for determination of wet gluten is given in IS 8162 : 1998/ISO 5531 : 1978 ‘Wheat flour - Method for determination of wet gluten’. ISO 21415-1 : 2006 together with ISO 21415-2 : 2006 has cancelled and replaced ISO 5531 : 1978, which has been technically revised. Therefore, on the lines of ISO Standard, this standard is also published in four parts adopting corresponding parts of ISO 21415. Upon publication of these standards, IS 8162 and IS 15470 shall stand cancelled.

The text of ISO Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following:

a) Wherever the words ‘International Standard’ appear referring to this standard, they should be read as ‘Indian Standard’.

b) Comma (,) has been used as a decimal marker while in Indian Standards, the current practice is to use a point (.) as the decimal marker.