Lipid Composition of the Male and Female Innards of Neopetrolisthes maculatus: A Ready Source of Essential Fatty Acids

Adeyeye Emmanuel Ilesanmi^1*, Adubiaro Habibat Omolara² & Idowu Olajumoke Tolulope³

¹Department of Chemistry [Analytical Unit], Ekiti State University, Ado-Ekiti, Nigeria
²Industrial Chemistry Department, Federal University, Oye Ekiti, Ekiti State, Nigeria
³Department of Chemistry, Afe Babalola University, Ado Ekiti, Ekiti State, Nigeria

Dr. Adeyeye Emmanuel Ilesanmi, Department of Chemistry [Analytical Unit], Ekiti State University, Ado-Ekiti, Nigeria.

Keywords: Neopetrolisthes maculatus; Male and Female; Essential Fatty Acids

Abstract

The levels of fatty acids, phospholipids and sterols were evaluated in the innards of the male and female Neopetrolisthes maculatus using standard methods. All determinations were on dry weight basis. Results showed the crude fat to vary as follows: 11.8g/100g (female) -12.5g/100g (male) and the corresponding total fatty acid ranged from 11.0 - 11.7g/100g. Whilst the total metabolisable energy ranged from 437kJ/100g (female) - 463kJ (male) (or 106-113kcal/100g) in a crude fat, the range was 407 - 433kJ/100g (or 99.0 - 105kcal/100g) in the fatty acids. SFA varied from 20.2 - 24.4% of total fatty acids; total unsaturated fatty acids varied from 75.6 (male) - 79.8 (female)%; MUFA range was 31.3 (male) - 34.5 (female)%; PUFA range was 44.4 (male) - 45.3 (female)% whereas the PUFA/SFA range was 1.82 - 2.24. Some calculated quality parameters had these values: AA/DGLA (91236 - 114623), EPSI (1.42 - 1.31), EPA/DHA (1.46 - 2.76), LA/ALA (5.08 - 5.26), MUFA/SFA (1.28 - 1.71) and n-6/n-3 (0.2251 - 0.2992). The food equivalents of the fatty acids followed the trend of the various fatty acids in the samples. The phospholipids levels were higher in the females than the males on pairwise comparison, lecithin was the highest concentrated phospholipid in both samples with values range of 224mg/100g (male, 61.3%) - 276mg/100g (female, 61.1%) and total ratio of male: female values of 1.00: 1.23. In the sterols, total values were generally low at 76.1mg/100g (male) - 101mg/100g (female) and ratio of 1.00:1.33. Sterols of significance were cholesterol 66.2mg/100g (male, 87.0%) - 88.6mg/100g (female, 87.8%) and campesterol of 9.90mg/100g (male, 13.0%) - 12.4mg/100g (female, 12.2%). Statistical analyses of the fatty acids, phospholipids and sterols showed significant difference in each case at r_=0.01 with corresponding high levels of index of forecasting efficiency between the sexes showing that the innards of one could instead be used biochemically in place of the other one.

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