Chemical Analysis of Nutritional Composition of Mudskipper, Papyrocranus papillio (Gunther) and Silver Catfish, Chrysichthys nigrodigitatus (Lacepede) smoked with Red Mangrove in Akwa Ibom State, Nigeria
Antai, G. A., Essien, A. I., & Etuk, I. U.
Department of Science Technology
Akwa Ibom State Polytechnic, Ikot Osurua
P.M.B. 1200, Ikot Ekpene, Akwa Ibom State
Email: anthonyessien44@gmail.com
Corresponding Author: Essien, A. I.
ABSTRACT
Chemical analysis of proximate composition of mudskipper, Papyrocranus papillio and silvercatfish, Chrysichthys nigrodigitatus smoked with red mangrove (Rhizophora racemosa) was carried out with standard analytical procedures. Mudskipper smoked with red mangrove recorded moisture content of 0.00±0.00%, ash (22.46±0.40%), crude fibre (13.72±0.03%), crude protein (58.35±0.17%), crude fat (4.17±0.06%), carbohydrates (1.29±0.31%) and caloric value (276.07±1.60kcal). The fresh form had moisture content of 79.99±0.28%, ash (18.23±0.1%), crude fibre (12.12±0.05%), crude protein (52.87±0.6%), crude fat (9.69±0.13%), carbohydrates (7.09±0.21%) and caloric value (327.02±0.40%). Silver catfish smoked with red mangrove had for moisture (1.08±0.06%), ash (9.40±0.025%), crude fibre (6.27±0.02%), crude protein (56.06±0.45%) and crude fat (8.25±0.048%). Carbohydrate and caloric value were 10.63±0.28% and 355.94±0.0406 kcal respectively. The fresh sample recorded for moisture (67.41±0.0025%), ash (8.84±0.025%), crude fibre (5.89±0.02%), crude protein (54.25±0.35%), crude fat (16.63±0.045%); while carbohydrate was 14.39±0.35% and caloric value (424.26±0.05 kcal). The smoked samples of mudskipper and sliver catfish were nutritionally richer in protein, fibre and ash contents than the fresh samples. Increase in the proximates could be attributed to the smoking process and the quality of phenolic compounds released from the burnt (mangrove) wood.
Keywords: Nutritional Composition, Mudskipper, Silver Catfish, Red Mangrove, Smoking.
