Nutritional composition of farmed and wild sandworms, Perinereis nuntia
2011
The nutritional compositions of farmed sandworms, fed with a commercial shrimp diet, and wild sandworms, caught from the shore line in Chonburi province, Thailand, were investigated. Protein was not different between farmed and wild sandworms (512 and 528g/kg, p>0.05) but fat content was different (340 and 273g/kg, p<0.05). The moisture content was higher in wild (813 versus 763g/kg, p<0.05) while the ash contents were higher in farmed than in wild sandworms (94 versus 67g/kg, p<0.05). The fatty acid profile was identified and the major saturated fatty acids (SFA), monounsaturated fatty acids (MUFA) and polyunsaturated fatty acids (PUFA) in both groups of sandworms were present in somewhat different levels in farmed and wild sandworms, being C16:0 (309 and 332g/kg, p<0.05), C18:1 (83 and 131g/kg, p<0.05) and C18:2 (94 and 78g/kg, p<0.05). The total SFA and MUFA contents were higher in wild than farmed sandworms, respectively (461 versus 411, 218 versus 198g/kg, p<0.05). The PUFA content was lower in wild than farmed sandworms (184 versus 247g/kg, p<0.05). The content of arachidonic acid (AA) and docosahexaenoic acid (DHA) in both groups of sandworms were not different (p>0.05). However, farmed sandworms were found to contain a higher ratio of n3:n6 PUFA than wild sandworms (0.7:0.4, p<0.05). But the content of eicosapentaenoic acid (EPA) in farmed sandworms was lower than that of wild sandworms (30 versus 42g/kg, p<0.05). The content of analyzed micro-minerals in farmed and wild sandworms were different (p<0.05) while the content of analyzed macro-minerals were different (p<0.05) except for potassium. Wild sandworms were contained higher level of vitamin A and lower level vitamin C and E than farm sandworms.
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