Published: 2021-07-22

Study on proximate composition of four genotypes of Arachis hypogea l. (groundnut)

Yusuf M. Abdullahi, Abuhuraira Ado M., Ibrahim Baba, Hamza Garba, Muhammad N. Salihu, Mamman M. Lawal, Maryam D. Umar, Faisal Muhammad


Background: Groundnut (Arachis hypogea L.) also known as peanut is one of the world’s principal oilseed crop. The plant originated in South America, but is widely distributed throughout the tropic and warm temperate areas in Asia, Africa, Oceania, North and South America and Europe. This study aimed to evaluate the proximate content of some genotype of groundnut (Arachis hypogea L.).

Methods: A total of four different groundnut varieties were used in this study; the varieties were obtained from international crop research institute for the semi-arid tropic (ICRISAT) Kano station. Samples selected were Samaru nut 11 (Samnut-11); Samaru nut 22 (Samnut-22); Samaru nut 23 (Samnut-23); and Samaru nut 24 (Samnut-24). The analysis was conducted in the animal laboratory faculty of Agricultural sciences, in Bayero University Kano, Nigeria. The moisture, ash, crude protein, crude fat, crude fiber and nitrogen free extract of the samples were detected using a standard procedure adapted from official methods of analysis 1990. Data was analyzed using the analysis of variance (ANOVA) and means were separated using Student-Newman-Keuls (SNK) in SAS version 9.3.  

Results: The higher content of ash was found in Samnut-24 (4.4%), and Samnut-23 (11.8%) was found to have highest moisture. Samnut-23 has the highest content of crude protein (30.6%) and crude fiber (4.7%). A higher content of fat and oil (ether extraction) was found in Samnut-23 (40.0%) and a higher content of soluble carbohydrate (NFE) was found in Samnut-11(27.4%) and Samnut-22 (27.4%).

Conclusions: Groundnut characteristically contained high level of oil and protein with low level of moisture, ash and carbohydrate; this makes it a potential source of edible-oil. The high protein of the defatted groundnut makes it good as cake for human consumption and useful as animal feeds. Samnut-23 has enriched edible-oil content and the crude protein, while Samnut-22 has low oil content and protein, but has enriched with NFE. Based on the conclusion it was recommended that further research should be carried out on the quality of proximate content of groundnut between the four varieties.


Arachis hypogea L., Groundnut, Nutrition, Nigeria

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Freeman HA, Nigan SN, Kelly TG, Ntare BR, Subrahmanyam P, Boughton D. The world groundnut economy, facts, trends, and outlook. International Crops Research Institute for Semi-Arid Tropics, Patacheru. 1999;502.

Nigam SN, Dwivedi S.L, Gibbons RW. Groundnut Breeding Constraints, Achievements and Future Possibilities. Plant Breeding Abstracts. 1991;61:1127-36.

Anonymons D. Groundnut federal ministry of education science and technology Lagos. 1984.

Weiss EA. Oil Soil crop (tropical Agriculture series). Longman inv. New York. 1983;633(85):298-660.

Yayock JU. Effecting of population density y fertilizer level on the economic yield five varieties of ground nut at 3 locations in Nigeria. India journals of Agriculture Science. 1979;49(11):867-74.

Achu MB, Fokou E, Tchiegang C, Fotso M, Tchouanguep FM. Nutritive value of some cucurbitaceae oil seeds from different regions in Cameroon. Af J Biotechnol. 2005;4:1329-34.

Pancholly SK, Deshpande AS, Krall S. Amino acids, oil and protein content of some selected peanuts cultivars proc. Am Peanut Res Educ Soc. 1978;10:30-7.

Ahmad EM, Young CT. Composition, Quality and Flavour of peanut. In Peanut Science and Technology APRES. Yoakum, Texas. 1982;655-88.

Bansal UK, Satija DR, Ahua KI. Oil composition of diverse groundnut (Arachis hypogaea L.) Genotypes in relation to different environment. J Sci Food Agri. 1993;63:17-9.

Official Methods of Analysis. Association of Official Analytical Chemists. Protein (Crude) in Animal Feed: Semi automated Method. 15th Edition. 1990.

Official methods of Analysis. Association of Official Analytical Chemists. Ash of animal feed (942.05). 15th Edition. 1990.

Holst DO. J Assoc Off Anal Chem. 1982;65(2):265-9.

Nelson RG, Carlos AG. Chemical composition of Aboriginal peanut (Arachis hypogeal L.) Seeds from Peru. J Agri Food Chem. 1995;43:102-5.

NAS. Firewood crops, National Academy of Sciences, National academy press. Washington DC. 1980;138-44.

National Research Council (US) Committee on Diet and Health. Diet and Health: Implications for Reducing Chronic Disease Risk. Washington (DC): National Academies Press (US); 1989. 11, Fat-Soluble Vitamins. Available at: Accessed on 30 December 2020.

Atasie VN, Akinhanmi TF. Extraction, Compositional Studies and Physico-Chemical Characteristics of Palm Kernel Oil. Pakistan Journal of Nutrition. 2009;8:800-3.