Scientific Research and Essays

  • Abbreviation: Sci. Res. Essays
  • Language: English
  • ISSN: 1992-2248
  • DOI: 10.5897/SRE
  • Start Year: 2006
  • Published Articles: 2752

Short Communication

Compositional analyses of the seed of sour sop, Annona muricata L., as a potential animal feed supplement

Fasakin, A. O.1, Fehintola, E. O.2, Obijole, O. A.2 and Oseni, O. A.3
  1Chemistry Department, University of Ado Ekiti, Ekiti State, Nigeria. 2Chemistry Department, Adeyemi College of Education, Ondo, Nigeria. 3Biochemistry Department, Federal University of Technology, Akure, Ondo State, Nigeria.
Email: [email protected]

  •  Accepted: 12 September 2008
  •  Published: 31 October 2008



The proximate composition of the seed and seed coat of sour sop (local name chap chap) were investigated with a view of highlighting the nutritional and industrial potentials of the seed. The result of the study revealed 27.34 and 11.4% of protein in the seed and coat, respectively. The percentage constitution of carbohydrate in the seed was 4.36 while that of the coat was 24.69%. There was no trace of oil in the seed coat. However, the percentage of fat in the seed was 22.57%. The percentage ash contents of the seed and coat were respectively 2.29 and 2.58% while the crude fiber contents were 43.44% for seed and 63.32% for coat. The mineral content in mg/100 g of seed : coat was found to be potassium (31.4:35.9), sodium (29.1:30.0); calcium (3.6:10.9); magnesium (53.3:58.6) for the macronutrients.  Investigation of micronutrients in ppm for seed : coat gave for iron (63.2:44.3); zinc (49.1:41:4) and copper (1.0:0.4).  Manganese, lead and cadmium were not detected.  The phytate, tannin and cyanide contents were also determined to be (620.52:188.04) mg/100 g; (2.6:4.9) mg/100 g and (3.71:10.8) mg/kg for seed : coat, respectively.  The result compares favorably with the composition of feeds and supplements commonly used in Nigeria. 


Key words: Sour sop, toxicants, animal feed, proximate & phytate content.