TRMH-Alcalase showed a high lightness (L* = 72.01) and less redness
and yellowness (a* = −2.52 and b* = 13.46) while TRMH-A26
was the darkest (L* = 58.9) and the more reddish hydrolysate (a* =
1.48). The results appear to indicate that color of protein hydrolysates
is affirmatively influenced by enzymatic treatment as well as the composition
of the raw material and the hydrolysis condition. Ktari et al.
[13] reported that the color of zebra blennymuscle hydrolysates preparing
by different crude proteases, varied with the enzyme. Moreover,
Sathivel et al. [34] reported that the color of the whole herring and herring
byproduct hydrolysates, prepared using Alcalase, varied with
substrates.