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Nutritional and Food Quality Assessment of Dried Fishes in Singra Upazila Under Natore District of Bangladesh

Md. Tariqul Islam
Department of Fisheries, University of Rajshahi, Rajshahi-6205, Bangladesh

Anannya Sen Tumpa
Department of Fisheries, University of Rajshahi, Rajshahi-6205, Bangladesh

Dr. Fawzia Adib Flowra
Department of Fisheries, University of Rajshahi, Rajshahi-6205, Bangladesh

Mst. Aziza Sultana
Department of Fisheries, University of Rajshahi, Rajshahi-6205, Bangladesh

Shamim Ahmed
Department of Fisheries, University of Rajshahi, Rajshahi-6205, Bangladesh

Abstract/ Executive Summary:

The present study was conducted on dry fish for determining proximate composition and microbial load. Samples were collected from Atrai upazila under Naogaon district from September 2011 to February 2012. Four species were used for this purpose, such as Puntius sp. (puti), Amblypharyngodon mola (mola), Channa punctatus (taki) and Glossogobius giuris (bele). The moisture content of the dried fishes obtained was in the range of 29.25 – 34.43% and the highest value obtained from Channa punctatus (taki) and the lowest from Amblypharyngodon mola (mola). On the other hand, protein content was found in the range of 32.02 to 41.38% with the highest value in Channa punctatus (taki) and the lowest in Amblypharyngodon mola (mola). There was a huge variation in lipid content which is in the range of 3.21 to 14.03% where the highest value in Amblypharyngodon mola (mola) and the lowest in Channa punctatus (taki). Ash content was in the range of 20.14 -24.40 % with the highest value obtained from Amblypharyngodon mola (mola) and the lowest value from Puntius sp. (puti). The Aerobic Plate Count (APC) was found in the range of 2.3×10⁵– 3.6×10⁷ CFU/g in the dried fishes with the highest value from Channa punctatus (taki) and the lowest from Puntius sp. (puti). Taking the 10⁷ CFU/g as the upper acceptable limit, only Channa punctatus (taki) fish was considered as unacceptable quality.

Keywords: Dried fish, Proximate composition, Nutrition, Food quality, Microbial load

Location: Fish Nutrition Laboratory, Bangladesh Agricultural University, Mymensingh.

Start Date: 00-09-2011

End Date: 00-02-2012

Program Area: Postharvest and Agro-processing

Commodity: Aquatic animal

Objectives:

1. To assess the percentage of proximate composition and bacteriological aspects of sun dried products of some important fresh water fish species through laboratory analysis.

Methodology:

Traditional dried fish products were collected from storage of different drying spots in Singra upazila under the Natore district. The species used for investigation were Amblypharyngodon mola (Mola), Puntius sp. (Punti), Channa punctata (Taki), Glossogobius giuris (Bele). Biochemical analysis such as moisture, ash, lipid and crude protein were carried out according to the methods given in AOAC in the Fish Nutrition Laboratory of Bangladesh Agricultural University, Mymensingh, Bangladesh. Bacteriological Analysis was done in the Fisheries Department Laboratory of Rajshahi University, Bangladesh. Total aerobic plate count expressed as colony forming units (CFU/g) of the representative samples were determined by standard plate count method on plate count agar following the serial dilution technique. All determinations were done in triplicate and the mean value was reported. The result was performed from following formula- No. of bacteria (CFU/g) = No of Colony × Dilution Factor

Source of Information: Trends in Fisheries Research Vol. 2 Issue 1, 14-17 (2013) ISSN: 2319–474X (Print); 2319–4758 (Online)

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The moisture content of the dried fishes obtained was in the range of 29.25 – 34.43% and the highest value obtained from Channa punctatus (taki) and the lowest from Amblypharyngodon mola (mola). On the other hand, protein content was found in the range of 32.02 to 41.38% with the highest value in Channa punctatus (taki) and the lowest in Amblypharyngodon mola (mola). There was a huge variation in lipid content which is in the range of 3.21 to 14.03% where the highest value in Amblypharyngodon mola (mola) and the lowest in Channa punctatus (taki). Ash content was in the range of 20.14 -24.40 % with the highest value obtained from Amblypharyngodon mola (mola) and the lowest value from Puntius sp. (puti). The Aerobic Plate Count (APC) was found in the range of 2.3×10⁵– 3.6×10⁷ CFU/g in the dried fishes with the highest value from Channa punctatus (taki) and the lowest from Puntius sp. (puti). Taking the 10⁷ CFU/g as the upper acceptable limit, only Channa punctatus (taki) fish was considered as unacceptable quality

Knowledge Management: Journal