ABSTRACT
This study was carried out to determine the yield and some phytochemical compositions of Guava leaf protein concentrate collected from three different locations in Edo State.
The three different locations were Aruogba, Sapele Road and University of Benin (UNIBEN),Ugbowo Campus. The leaves collected from these locations were processed into leaf protein concentrates using heat coagulation method of extraction, after which the guava LPC obtained were analysed for phytochemicals compositions. The data obtained for the yield and phytochemical analysis of guava (Psidium guajava) leaf protein concentrate were subjected to one-way ANOVA and the means with significant difference were separated using Duncan's Multiple Range Test.
From the results obtained, the yields from Aruogba (1.78%), Sapele Road (1.54%) and UNIBEN(1.95%) are statistically the same. This means that for every 100kg dry matter of guava leaf, an average of 1.78kg, 1.54kg, and 1.95kg of leaf protein concentrate will be produced from guava leaves collected from Aruogba, Sapele Road and UNIBEN respectively. From the phytochemical analysis of guava LPC collected from the three different locations, the alkaloids, flavonoids, phenols and steroids and tannins content of guava LPC were highest in that from UNIBEN. Oxalic acid and saponins content of guava LPC were highest in that from Sapele Road. Guava LPC from Aruogba was the lowest in flavonoids, oxalic acid, saponins, and steroids contents. For phenols content, LPC from Aruogba(6.62mg/g) and Sapele Road (6.66mg/g) were statistically the same. These results were due to significant differences with location in terms of phytochemical content of guava leaf protein concentrate.
