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Preparation and Preservation of Fish Protein Concentrate (fpc) from Five Dried Small Indigenous Fishes of the River Padma, Rajshahi, Bangladesh

Dr. Sarmin Akther
Associate Professor
Department of Zoology, Rajshahi University, Rajshahi, Bangladesh

Abstract/ Executive Summary:

A total of five dried fish species viz. Bele (Glossogobius giuris),Tit punti (Puntius ticto), Kholisa (Colisa fasciata), Bacha (Eutropiichthyes vacha), Kechki (Corica soborna) and some mixed fishes chanda, nama chanda, mola, guchi, kakila (Chanda nama, Chanda ranga Amblypharyngodon mola, Mastacembelus pancalus, Xenentodon cancilla) were selected for preparation of powder (FPC) which can be preserved for a time period. This fishes were sun dried or oven-dried. Quality of the oven dried fish was better than that of the sun dried fishes. Weight of fish powder was found to range from 43.63 - 14.63g Bele to 84.24- 31.77g Kholisa. After sun drying the maximum powder products from 1kg of fresh fish was 258.009 (25.80%) in Kechki and minimum 117.20g (11.72%) in Bele. The ratio between the fresh fish weight and sun dried fish weight was found minimum as 1: 0.123 Bele and maximum as 1: 0.259 Kechki and mixed fishes also more or less. The lowest duration of day was needed in Kechki (3-4 days) and the highest duration (7 days) was needed in Bele. The minimum and maximum weight of sun dried product (N=10) was obtained as 46.83 - 15.31g (Bele) and 89.44 - 31.66g (Kholisa) respectively. The oven dried fishes ranged from 44.93 - 14.65g (Bele) and 86.88 - 31.62g (Kholisa).

Keywords: Dried SIS fishes, Fish powder (FPC)

Location: River Padma, Rajshahi, Bangladesh

Start Date: 00-07-2009

End Date: 00-07-2011

Program Area: Quality and Nutrition

Commodity: Dry fish

Objectives:

The present work was designed to determined the percentages of flesh weight of five freshwater fish species and some mixed-species after processing and preservation that of wastes and powder products (FPC).

Methodology:

Five different species and a group of mixed small fishes were collected from different spot and landing centers of Rajshahi City during July 2009 to July 2011. After collection samples were washed and preserved in refrigerator. Species as Bele, puti, kolisa, bacha, kechki and some mixed fishes (Chanda, nama chanda, mola, guchi, kakila). After collection the fishes were washed with tap water then, fin, scale, viscera was cleaned again and soaked using kitchen tissue paper. Then weight of a group (50/100g) and individual fresh fishes was taken. The data were recorded separately for each species. After weighing the fresh fishes were placed in clean and held for drying.

2.1 Sun drying Sun drying was done in the open air using the solar energy to evaporate the water and was carried away by the natural air currents. The specimens were dried for minimum 6-7 days depending on the species and climatic condition. During drying, they were held covered by dense meshed nylon or mosquito net to prevent bird and fly infestation. The peak seasons was summer and winter for sun drying and off season was rainy or gloomy weather. The process and principle of sun drying can be expressed by the model.

2.2 Preparation and preservation of (FPC) The dried fishes were kept separately species wise at normal room condition in plastic container. Within 6-7 days the dry fishes were powdered with a kitchen grinder. Then the powder was sieved by chaplain. Electronic balance meter was also used for taking weight of and waste of powders. The powdered fishes were again dried under sun. This fish powder was packed in a polythene bag and kept in a plastic contained at 6-7 month (normal room temperature) and then in a refrigerator for 1 year.

Source of Information: International Journal of Fisheries and Aquatic Studies 2018; 6(3): 163-167

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Fish protein concentrate of fishes can be used in preparing regular or delicious snacks soups, fast food which are more acceptable to all especially children and adults and new generation of Bangladesh. Other portion (waste) of fishes is used in fish meal for fish or poultry. Preparing small indigenous fishes for cooking time are consuming. Therefore, fishes after dressing or even as dry powder (FPC), can attract consumer’s interest and this can increase the marketing efficiency of the SIS fishes. Fish powder after proper drying can be served for quite a long time in air tight containers kept at a dry place. Powder of sun dried fishes is used in vegetables, curries, dal, bora, at different areas of Bangladesh.

Knowledge Management: Journal