AACC Approved Methods of Analysis, 11th Edition AACC Method 5635.01. Method for Determining Water Hydration Capacity and
Percentage of Unhydrated Seeds of Pulses
AACC Approved Methods of Analysis, 11th Edition
Physicochemical Tests
AACC Method 5635.01
Method for Determining Water Hydration Capacity and
Percentage of Unhydrated Seeds of Pulses
VIEW METHOD
Objective
This test describes a method to determine the capacity of
whole pulse seeds to absorb water and to calculate the percentage of unhydrated
seeds. It is applicable to all pulse crops, such as field peas, beans, chickpeas
and lentils. Hydration capacity of pulses is defined as the amount of water that
whole seeds absorb after soaking in excess water for 16 hr at room temperature
(22 ± 2°C) and is expressed as the amount of water absorbed per 100 g of seeds.
Some seeds remain entirely or partially unswollen after 16 hr of soaking at room
temperature. See Notes 1 and 2. These are defined as unhydrated seeds. The
number of unhydrated seeds is expressed as a percentage of the total number of
seeds.
