Fatty Acid Profile of Freshwater Crab (Paratelphusha lamellifrons) from Padma River of Rajshahi City, Bangladesh

Abstract

Freshwater crab Paratelphusha lamellifrons from Padma River were investigated for proximate and fatty acid composition. Proximate analyses of the claw and body meat of crab revealed the presence of moisture, crude protein, crude lipid and ash and their amount ranges between 71.72%-81.30%, 35.01%-49.06%, 13.24%-17.64% and 19.62%-22.12% respectively, on a dry weight basis. Except lipid (17.64%), claw meat content higher amount of moisture (81.30%), protein (49.06%) and ash (22.12%) compared to body meat. The fatty acid composition was analyzed by GC-FID and total 12 types of fatty acid were recorded in the fat isolated from crab. Among the recorded fatty acids MUFA were observed as the highest (42.85%), SFA were the second (25.96%) whereas, polyunsaturated (PUFA) were the lowest (15.02%). The fatty acid compositions showed that the SFA, MUFA and PUFA were dominated by palmitic acid (20.49%), oleic acid (23.99%) and linoleic acid (9.81%) respectively. The proximate and fatty acid composition of the present study demonstrated that these species (P. lamellifrons) are a promising source of essential fatty acids ω-3 and ω-6 namely, DHA and EPA.

Microelements and macroelements in the body of the invasive Harris mud crab (Rhithropanopeus harrisii, Maitland, 1874) from the central coast of the South Baltic Sea

“… a Islam et al (2016) b Jimmy and Arazu (2012) c Sudhakar et al (2011) d Moronkola et al (2011) e Silambarasan et al (2015) f Küҫükgülmez et al (2006) g Kathirvel et al (2014) h Zotti et al (2016) i Soundarapandian et al (2014) j Soundarapandian et al (2013) k Adeyeye et al (2010) l Erdem et al (2015) m Barrento et al (2009)…”

“…The levels of these elements in crustaceans may occur in broad ranges, as shown in Table 5, ranging from 115 to 23,000 ppm for Na; from 153 to 4880 ppm for K, and from 3 to 1710 ppm for Fe (Table 5). Their concentrations in living organisms are usually high due to their significant role in physiological functions, and their high variability is related to various factors, e.g., sexual dimorphism or the season of catch (Jimmy and Arazu 2012; Islam et al 2016). The seasonal and sex-specific differences are most probably related to the spawning cycle and differences in metabolism, influencing feeding, reproductive state, and weight (Legras et al 2000).…”

“…Crustaceans are a valuable source of high-quality protein, fatty acids, and macroelements and microelements such as K, P, Na, Ca, Mg, Cu, Fe, and Zn (Moronkola et al 2011; Erdem et al 2015; Islam et al 2016). However, the Harris mud crab is a relatively small crustacean, and too small for human consumption, but may be used as an additive to fish products used in animal feed production (Jimmy and Arazu 2012).…”