PROXIMATE COMPOSITION, MINERAL ELEMENTS, ANTI-NUTRITIONAL FACTORS AND PHYSICOCHEMICAL ANALYSIS OF PRIDE OF BARBADOS SEED (Caesalpina pulcherrima)
TEMITOPE O. ILORI
Bioresources Development Centre, National Biotechnology Development Agency, Ogbomoso, Oyo State, Nigeria.
MUTIU A. ALABI *
Bioresources Development Centre, National Biotechnology Development Agency, Ogbomoso, Oyo State, Nigeria.
FAITH OLU
Bioresources Development Centre, National Biotechnology Development Agency, Ogbomoso, Oyo State, Nigeria.
AISHA ABUBAKAR
Bioresources Development Centre, National Biotechnology Development Agency, Ogbomoso, Oyo State, Nigeria.
CHRISTY IDOWU
Bioresources Development Centre, National Biotechnology Development Agency, Ogbomoso, Oyo State, Nigeria.
JULIET AWOYEMI
Bioresources Development Centre, National Biotechnology Development Agency, Ogbomoso, Oyo State, Nigeria.
*Author to whom correspondence should be addressed.
Abstract
Pride of Barbados (Caesalpina pulcherrima) is a legume which is known to contain biologically active components. The study aims at determining the proximate composition, mineral elements and anti-nutrients composition of Pride of Barbados with the view of further understanding its usefulness. The physicochemical, elemental, proximate and anti-nutrient analysis composition of pride of Barbados seeds were determined using standard method of analysis (AOAC) and instrumental method of analysis (AAS). The result of proximate analysis showed 4.970% of Ash, 8.067% of fat, 7.692% of moisture, 9.606% of crude fibre, 1.83% of crude protein. The physicochemical properties of the extracted oil from pride of Barbados seeds shows that the peroxide value is 34.00 mM, saponification value is 65.91 mg KOH/g oil, acid value is 29.17 mg/g, free fatty acid is 14.66 mg KOH/g oil, unsaponification matter is 10.98 mg/g, refraction index is 1.438, smoke fire point 98°C, melting point 26°C, flash point 108°C, fire point 112°C. The mineral elements present in the sample in mg/100 g are Na - 183.31, K - 208.56, Mg - 258.91 and Ca - 175.01. The results also showed that tannin content is 0.485 mg/100 g, oxalate 6.122 mg/100 g and phytate 0.535mg/100g. Therefore, the seed could be a good source for low cost plant protein and mineral elements.
Keywords: Caesalpina pulcherrima, proximate composition, mineral elements, anti-nutritional factors, physicochemical analysis