Nutritional profiling of hilsa (Tenualosa ilisha) of different size groups and sensory evaluation of their adults from different riverine systems

D. De,K. K. Vijayan,V. R. Suresh,S. Mukherjee,P. S. Shyne Anand,P. Kumar

doi:10.1038/s41598-019-55845-w

D. De, K. K. Vijayan + Show 4 more

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https://doi.org/10.1038/s41598-019-55845-w

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Abstract

Nutritional composition of hilsa, Tenualosa ilisha, of different size groups was analyzed to study variations in their composition with the progression of growth, and to correlate it with the flavor of adult hilsa (>800 g size) collected from different riverine systems (Hooghly and Padma). The amino acid analysis revealed significantly higher arginine (P < 0.01), methionine (P < 0.01) and glycine (P < 0.05) contents in samples below 5 g, whereas samples above 800 g had higher (P < 0.01) leucine and isoleucine contents. Total saturated and monounsaturated fatty acids were lower (P < 0.01) in fish below 5 g as compared to larger size groups (>5 g), whereas docosahexaenoic acid was higher (P < 0.01) in fish below 5 g size. Nutritional composition of adult hilsa (>800 g) from Hooghly and Padma river revealed higher (P < 0.01) aspartic acid, glutamic acid, alanine, palmitoleic and oleic acid in samples from the Padma, whereas leucine and isoleucine contents were higher (P < 0.01) in hilsa from Hooghly. Sensory evaluation test revealed superior (P < 0.05) taste, aroma, and muscle texture of hilsa from the Padma as compared to those from Hooghly. Higher alanine, aspartic acid, glutamic acid, oleic acid, and palmitoleic acid along with higher n3:n6 fatty acid are attributed to the superior taste of hilsa from the Padma.

Highlights

Hilsa, Tenualosa ilisha belonging to the class Actinopterygii, order Clupeiformes, sub-family Alosinea, and family Clupeidae is one of the most important fishes of the Indo-Pacific region
A comparative study on the nutritional composition and sensory evaluation was made to determine the reason behind the difference in taste and flavor, if any, between adult hilsa from the Hooghly and Padma river systems collected during December (Fig. 1)
Mainly protein, lipid, amino acid, and fatty acid of the fish muscle depends on the feeding habit, type of feed, and abundance of feed[11,12]

Summary

Introduction

Tenualosa ilisha belonging to the class Actinopterygii, order Clupeiformes, sub-family Alosinea, and family Clupeidae is one of the most important fishes of the Indo-Pacific region. The hilsa shad occurs in the foreshore areas, estuaries, brackish water lakes and freshwater rivers of the western division of the Indo-Pacific faunistic region[1]. This species is high in abundance in the Indian State of West Bengal and Bangladesh waters, mainly along the river Hooghly, the Indian limb of river Ganga and its coastal areas and in river Padma, the main limb of river Ganga passing through Bangladesh. The nutritional composition of different size groups of the fish (below 5 g to above 800 g) collected from different habitats, viz., marine, brackish water and freshwater were investigated to have an understanding on changes of body nutritional composition with the progression of growth which will help in development of feed for hilsa of different stages. A comparative study on sensory evaluation and nutritional composition of adult hilsa from Hooghly and Padma rivers were taken up to investigate the reason behind the difference in taste and flavor between Hooghly and Padma hilsa

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