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Nutritional Value and Use of Shrimp Head Waste as Fish Meal

A. Nargis
BCSIR Laboratories, Rajshahi- 6206, Bangladesh

K. N. Ahmed
BCSIR Laboratories, Rajshahi- 6206, Bangladesh

G. M. Ahmed
BCSIR Laboratories, Rajshahi- 6206, Bangladesh

M. A. Hossain
BCSIR Laboratories, Rajshahi- 6206, Bangladesh

Munsur Rahman
BCSIR Laboratories, Rajshahi- 6206, Bangladesh

Abstract/ Executive Summary:

The different parameters on physico-chemical characteristics especially the free fatty acid (FFA), peroxide values, iodine values, lipid class composition and major elements of shrimp head waste were studied. The oil was fractionated into mono, di and triglycerides by silicic acid column chromatography. The calcium ranged from 3.26mg/100 gm to 5.08 mg/100 gm, magnesium 4.79mg/100gm to 7.02 mg/100gm, sodium 51.09 mg/100gm to 73.05 mg/100gm and potassium 52.91 mg/100gm to 83.07 mg/100gm respectively. The percentage of crude protein is 49.47.

Keywords: Nutritional value, Shrimp head waste, Fish meal

Location: BCSIR Laboratories, Rajshahi

Start Date:

End Date:

Program Area: Quality and Nutrition

Commodity: Feed

Objectives:

The purpose of this study is to determine the percentage of oil, crude protein, free fatty acid, iodine value, lipid composition and major elements viz. calcium, magnesium potassium and sodium etc.

Methodology:

Fresh shrimp waste (comprising mainly heads, shells) of Penaens monodon, Macrobrachium rosenbergii were collected from the Chinese Restaurants of Rajshahi. Immediately after collection, the samples were semi dried in an electric oven at 60^OC. Then these are blended in an electric blender. The oil of semi dried samples was extracted with n-Hexane in a Soxhlet Apparatus for 8 hours. n-Hexane as extracted solvent has been selected because this solvent has better effect over other polar solvents like alcohol, ketone, aldehyde, ester, etc.3 The analytical constants of oil were determined by the standard AOAC method.4 The crude oil was pooled and stored in a glass vials at 15^OC and lipid analysis was conducted after extraction as soon as possible. Three major lipid classes of crude oil were separated by silicic acid (E. merck, Darmstadt, W. German, 70-230 mesh) column chromatography with elution rates of 0.5-1.0 mi/min with all solvent.5 The chloroform fraction contained neutral lipid, the acetone fractions contained glycolipids and FFA and methanol fraction contained phospholipids. Hanus method6 was applied to determine the iodine value of the oil. The weight percentages of each lipid class was dependent on the total weight of lipid recovered with average 99.14 % of the crude oil applied. Glycolipid were calculated by subtracting the weight of FFA as determined by AOAC method from the weight of acetone fraction. The mineral contents were determined by titrametrically and spectrophotometri-cally. The analysis of nitrogen was carried out by micro-kjeldhal method.

Source of Information: Bangladesh J. Sci. Ind. Res. 41(1-2), 63-66, 2006

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

In conclusion, it may be stated that the shrimp waste (head and shell) may successfully be used to prepare highly proteinous supplementary feed for fish.

Knowledge Management: Journal