Nutritional susceptibility to morphological, chemical and microbial variability: An investigation on mud crab, Scylla serrata in Bangladesh

Nutritional susceptibility of Scylla serrata to chemical and microbial variability with varying morphological capacity was the thematic area of the present investigation. In detail, morphological capacity considering carapace length, carapace width, total length, chelate leg length and crawl leg length; the nutritional composition considering protein, lipid, ash, moisture; chemical assessment considering TVN, TMA; and microbial assessment considering TBC, TMC were measured for both male and female mud crab. Morphological observation revealed that the weight of male mud crab was changed by 65% with changing per unit of length (b=0.65) and in female it was by 42%. Moreover, for males the b values of weight-condition factor and length-condition factor ranges from above 2 to above 3; whereas in females the range of values were less than that found in males. TBC and TMC found in muscle of male mud crab were higher than that of female. The beta co-efficient of multivariate regression analysis showed (TVN= 9.2+0.48 TMA+0.02 TBC+ 1.7 TMC) that the TVN is changed by 0.48 unit/TMA, 0.02 unit/TBC and 1.7 unit/TMC changes indicating that the TVN value is highly changed with changing TMC followed by TMA and TBC. In case of TMA, the beta co-efficient of multivariate regression analysis (TMA=52.859+ 0.032TBC+3.624TMC) showed that the TMA is changed by 0.032 unit/TBC and 3.624 unit/TMC changes indicating that the TMA value is highly changed with changing TMC rather than that of TBC. The protein content found to negatively relate with the moisture content by 0.661 coefficient values and with lipid with 0.04 values. The correlation co-efficient of proximity composition considering primarily protein and lipid with chemical and microbial variability showed that protein is negatively sensitive to TVN, TBC and TMC values. It can then be inferred that the nutritious proximity of mud crab is significantly susceptible to sex with varying morphological capacity, chemical and microbial variability.

[1]  Farhana Karim.  A comparative analysis of bacterial flora and proximate composition of mud crab (Scylla serrata,Forsskal 1775) collected from different local markets of Dhaka city , 2015 .

[2]  D. Sakthivel,et al.  BIOCHEMICAL COMPOSITION OF MANGROVE CARB SESARMA BROCKII FROM PONDICHERRY SOUTHEAST OF INDIA , 2014 .

[3]  M. G. Sarower,et al.  Comparative Biochemical Composition of Natural and Fattened Mud Crab Scylla serrata , 2013 .

[4]  Z. Alam,et al.  Biochemical Sensory and Chemical Changes at -20°C in Gamma Irradiated Two Types of Stinging Catfish, Heteropneustes fossilis , 2013 .

[5]  A. Paul,et al.  A survey on the production and marketing of mud crab , S cylla serrata ( Forskal , 1755 ) in the south-western part of Bangladesh , 2012 .

[6]  A. Shanmugam,et al.  Length-Weight and Width-Weight Relationships of Mud Crab Scylla tranquebarica (Fabricius, 1798) , 2011 .

[7]  M. Islam,et al.  Socio-economic status of crab collectors and fatteners in the southwest region of Bangladesh , 2010 .

[8]  M. Hasan,et al.  Mud crab (Scylla sp.) marketing system in Bangladesh , 2010 .

[9]  .. K.Azam,et al.  Quality Changes in Pangus (Pangasius hypopthalamus) in Relation to Size and Season During Storage in Ice , 2005 .

[10]  M. Zafar,et al.  Biochemical Composition in Scylla serrata (Forskal) of Chakaria Sundarban Area, Bangladesh , 2004 .

[11]  .. M.Y.Ali,et al.  Biological Studies of the Mud Crab, Scylla serrata (Forskal) of the Sundarbans Mangrove Ecosystem in Khulna Region of Bangladesh , 2004 .

[12]  M. Kathirvel.  Mud Crab Culture In India , 2004 .

[13]  Nalan Gökoðlu,et al.  Determinaton of proximate composition and mineral contents of blue crab (Callinectes sapidus) and swim crab (Portunus pelagicus) caught off the Gulf of Antalya , 2003 .

[14]  E. Quinitio,et al.  Seed Production of Mud Crab Scylla spp. , 2002 .

[15]  C. Keenan.  Aquaculture of the mud crab, genus Scylla: past, present and future , 1999 .

[16]  H. Huss.  Quality and quality changes in fresh fish , 1998 .

[17]  M. Morrissey,et al.  Whey Protein Concentrate as a Proteinase Inhibitor in Pacific Whiting Surimi , 1996 .

[18]  Lo-chai Chen.  Aquaculture in Taiwan , 1991 .

[19]  J. J. Connell.  Control of Fish Quality , 1980 .

[20]  Jaakko Hintikka,et al.  The Method of Analysis , 1974 .

[21]  R. B. Bradstreet.  The Kjeldahl Method for Organic Nitrogen , 1965 .

[22]  D. Pearson.  The chemical analysis of foods , 1962 .

[23]  R. Jacquot.  CHAPTER 6 – Organic Constituents of Fish and Other Aquatic Animal Foods , 1961 .

[24]  C. R. Fellers.  THE TECHNOLOGY OF FOOD PRESERVATION , 1960 .

[25]  C. L. Newcombe.  The Nutritional Value of Seafoods , 1944 .

[26]  E J Conway,et al.  An absorption apparatus for the micro-determination of certain volatile substances: The micro-determination of ammonia. , 1933, The Biochemical journal.