TITLE:
Comparative Studies on Mineral and Scavenging Ability of Edible and Some Underexploited Wild Beans in Nigeria
AUTHORS:
O. A. Awoyinka, A. Ileola, C. N. Imeoria, M. F. Asaolu
KEYWORDS:
Beans, Minerals, 2, 2-Diphenyl-1-Picrylhydrazyl (DPPH), Vitamin E, Vitamin C
JOURNAL NAME:
Open Access Library Journal,
Vol.3 No.1,
January
27,
2016
ABSTRACT: This work was set out to assay for some minerals essential for healthy
state and biochemical indices that underlined degenerative diseases in some
edible bean cultivar and nearly extinct local wild bean. Against this backdrop,
ash composition was determined before Na , K ,
Ca2 , Mg2 , Zn2 , Fe2 , Pb2 and Cd were determined by Flame Photometer and Atomic Absorption Spectroscopy (AAS)
respectively. 2,2-diphenyl-1-picrylhydrazyl (DPPH), Vitamin E and Vitamin C
were also assayed to determine the scavenging ability of the bean samples. The proximate ash composition result of unprocessed and malted edible
bean IT99K-573-2-1 had the highest ash content value of 6.90 ± 0.01
and 6.92 ± 0.01 respectively. In the bean samples Pb2 and Cd2 were not detected. The empirical mineral composition varies across both
the wild and edible bean without significant difference
(P ≤ 0.05) except IT07K-243-1-10 that had Ca2 to be significantly higher than other bean samples. K was found to be significantly higher
in Feregede and IT07K-243-1-10
compared to other bean samples. Changes in
the radical scavenging ability of the various sample in this study after
malting, showed a slight reduction in DPPH content except for the edible beans—IT04K-333-2 and IT845-2246-4.
Well, there was slight reduction of Vitamin E only in Otili, Mucuna and
IT99K-573-1-1. Compared to others only Otili and IT845-2246-4 had slight reduction in Vitamin C after malting.