Lipid and Protein Variation in Fish Processing Waste of Murrel, Channa striatus and Catfish, Wallago attu

The present investigation has been carried out with the primary objective of estimating the lipid andprotein content of processing waste produced from snakehead murrel (Channa striatus) and catfish (Wallago attu). The minimum total lipid content (2.63+0.23 g/100 g) was observed in the waste of C. striatus during May and the maximum total lipid content (11.20+0.24 g/100 g) was observed in the waste of W. attu during the month of February. The lipid content in processing waste of both the fish initially increased significantly (p<0.05) from December to Februaryand thereafter decreased significantly (p<0.05) till May. On the other hand, the total soluble protein content of the processing waste of both murrel and catfish was minimum during the preparatory phase of spawning (December and January) and reaches its maximum value in pre-spawning phase (March to May). The total soluble protein content (52.30+1.30 mg/g) was observed to be minimum in the processing waste of C. striatus during the month of December and maximum (103.0+2.63 mg/g) in the waste of W. attu during the month of May. Thus, it can be inferred that the fish processing waste is a rich source of soluble protein and total lipids and therefore, should be properly utilized, leading to less wastage and extra revenue generation.