The effect of enrichment with silver carp (Hypophthalmichthys molitrix) protein powder on amino acid profile, proximate analysis and sensory characteristic of biscuit

The relation between food and health has had an increasing impact on food innovation, due to the popularity of the concept of functional food. Most bakeries products can easily be enriched and fortified with proteins, vitamins and minerals to meet specific needs of the target groups of the population. Biscuits are the most popular bakery products worldwide. Biscuits are ready to eat, cheap and conventional food. Protein fortification of biscuits is of current interest, because of increasing awareness of consumers towards health. Fish protein products such as FPP are low cost animal protein with high quality, so it can be used as a protein supplement to increase nutritive value of foods. This research was aimed to evaluate the quality and sensory properties of biscuits enriched with fish protein powder (FFP).

For this purpose, Fish protein power (FPP) of silver carp was used in production of biscuits by replacing it with wheat flour by 0 % (as control treatment), 2.5% (treatment 1) and 5% (treatment 2). Amino acid profile, PV, TBA, chemical composition and sensory analysis was done during 3 months storage at room temperature.

Seventeen kinds of amino acids were identified in fish protein powder of silver carp. The total content of amino acids fish protein powder were 975.19 mg/100 gr. Total essential and non-essential amino acids in control treatment were 36.50 mg/100 gr, that after using fish protein powder in enrichment of biscuits at the level of 2.5 and 5% increased to 50.91 and 67.37 mg/100 gr, respectively. Evaluation of sensory characteristics of biscuits samples did not showed a significant difference between control and enriched treatments (P>0.05).