The absorption index
k, in terms of attenuation factor and phase factor is given as under :
where hv photon energy, a = 4nk / Z = absorption coefficient (k = absorption index
or absorbance) and A= constant.
Statistical analyses showed significant differences in various extrudate properties, such as moisture content, water activity, color, bulk density, hardness, water solubility index, water absorption index
, expansion ratio, pellet durability index and dietary fiber content.
Water absorption index
(WAI) and water solubility index (WSI) were assessed on raw materials and blends before and after extrusion process (ANDERSON et al.
Through the assessment and comparison of different indexes such as transfer factor (TF), enrichment factor (EF), and the absorption index
, the ability of Ricinus communis L.
The absorption index
is related to the subject thickness, and the composer substance atomic number of the subject.
7) Water solubility index (WSI) and water absorption index
(WAI) were determined based on the method proposed by Anderson et al.
The particulate water absorbent has a first salt concentration absorption index
of not less than 0.
Extrudates were characterized concerning specific volume (SV), expansion index (EI), water absorption index
(WAI), water solubility index (WSI), color and texture.
The researchers used response surface methodology to analyze the effect of die temperature (140 C to 160 C), screw speed (150 rpm to 200 rpm) and pomace levels (2% to 10%) on specific mechanical energy (SME), die pressure, water absorption index
(WAI), water solubility index (WSI), gelatinization, in vitro starch digestibility and the glucan content of the extrudates.
The scientists evaluated the dried material for its functional properties, such as rapid viscosity, water absorption index
(WAI), water solubility index (WSI) and fat absorption index
The investigators characterized the structural changes that the fibers underwent by measuring the water solubility index (WSI), water absorption index
(WSI) and bulk density of the extrudates.