Abstract:
The purposes of this research were to study the optimum of mulva nut jelly as fat
replacer in hybrid catfish sausage with 0, 25, 50, 75 and 100 % (w/w). Chemical and physical
properties were analyzed (color value, firmness, shear force, structure), which the structure was
determined by Scanning Electron Microscope (SEM). Sensory properties and shelf life of the
product were also evaluated. The results showed that the increasing of mulva nut jelly affected to
the decreasing of lightness (L*), firmness and shear force. For the structure, the results showed
that increasing of mulva nut jelly had more distributive water droplets than the control, the
product tended to decrease cohesiveness resulting in emulsion. Analysis of chemical compositions,
the results showed that the increasing of mulva nut jelly ratio had higher moisture and fiber
contents than the control, while fat content decreased. The result of sensory properties showed
that the fish sausage as fat replacer with 75% of mulva nut jelly (w/w) got the highest acceptability
in odor, flavor, texture and overall preference, which fat content decreased as 52.56%. For the
evaluation of shelf life, the sausages from mulva nut jelly as fat replacer with 50, 75 and 100 % (w/w)
could prolong shelf life than other treatments by the products in normal packed with polyethylene
(PE) were 9 days at 4C storage, while the products in vacuum packed with polyethylene (PE)
were 12 days at 4C storage. The products showed that total viable plate count was less than
4.00 log cfu/g., yeast and mold were less than 100 cfu/g.