waste material is processed and used by the rope-making industry,
but the majority remains unutilized (Dey, Sachan, Ghosh, & Mitra,
2003). Coconut husk is a major source of carbohydrate and phenolics
(Sueli & Gustavo, 2007). Temdee and Benjakul (2014) used
the extracts from kiam wood and cashew bark rich in tannic acid as
the gel enhancer for gelatin. Phenolics in coconut husk could be
used as the alternation protein cross-linker, which strengthens the
gel network of gelatin, particularly from swim bladders. Therefore,
the present study aimed to investigate the impact of the extract
from coconut husk rich in phenolic on the gel properties of gelatin
extracted from swim bladder of yellowfin tuna.