Article Abstract

Journal of Agricultural Science and Food Technology

Research Paper|Published January 2020|Vol.6 (2):34-43



Investigating the antioxidant Content of Sweet Pepper in Response to Fertilisers


Jagessar R.C1*, Chester L2 and Blair T2


1Department of Chemistry, Faculty of Natural Sciences, University of Guyana.

2Department of Agriculture, Faculty of Agriculture, University of Guyana.



A pot experiment was conducted to compare the vegetative performance, yield and antioxidant content of Capsicum Annuum L. (Sweet pepper) in response to three sources of fertilizers i.e. organic (cow manure compost; 5% N: 3% P2O5:1% K2O), inorganic (NPK; 12% N, 24%P, 12%K) and a source of bio-organic fertilizer containing two strains of bacteria, Lactobacillus acidophilus and Saccharomyces cerevisiae. The treatments were set up in a completely randomized design, with four (4) treatments each having three (3) replicates. The green mature sweet peppers were harvested from the respective treatments and were tested for the different secondary metabolites. The Inorganic fertilizer treatment gave better results for all growth and reproductive performances compared to the other treatments. Total carotenoid content (TCC), total flavonoid content (TFC) and total phenolic content (TPC) were higher as a result of the organic fertilizer treatment. The results indicated that there is an excellent potential for enhancing antioxidant compounds of sweet pepper for economic production using organic fertilization, for these two treatments that resulted in increased antioxidant constituents.


Keywords:Phenolic, Flavonoids, Carotenoids, Biofertilizer, Antioxidant, Metabolites.


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