Comparison of Phytochemicals and Anti-Nutritional Factors in Some Selected Wild and Edible Bean in Nigeria

Abstract

This work aims at analyzing the bioactive and anti-nutritional compounds of edible and wild beans when unprocessed and malted. Qualitative screening of phytochemicals in the various bean samples was determined in ethanol and petroleum ether solvents. Results of the anti-nutritional compositions of unprocessed wild bean extracted with petroleum ether showed there were no traces of saponin and polyphenol, in Feregede and also in edible bean-IT07K-243-1-10 which also had no traces of saponin and tannin. After malting, saponin was totally absent in Pakala, Mucuna, IT97k-499-35, IT07k-243-1-10, and IT04k-333-2 respectively. Polyphenol was also found to be absent in IT07k-243-1-10. Mucuna has the highest phytic acid level (7.8867 ± 0.011) while Feregede has the lowest phytic acid level (2.9810 ± 0.004). Otili has the highest anti-trypsin level (12.001 ± 0.0013). This study showed varying levels of anti-nutrients on the respective bean samples when unprocessed but decreased marginally after malting. It was keenly noted that values derived, either before and after malting were not significantly different (P ≤ 0.05) from each other. In all, this study had further shown that malting process enhanced removal of anti-nutrients which invariably would lead to availability of nutrient for animal and human consumption.

Biochemical and Microbiological Evaluation of the Effect of Processing on Cucumeropsis mannii Seed

“…Generally, from Table 3, processing the seed will break down/deplete the antinutritional factors (except trypsin inhibitor) which otherwise inhibit protein digestibility. This is in agreement with the work of Awoyinka et al, [20] where malted legumes showed a decreased level of phytochemicals. Further on Table 3, the total Phenolics and DPPH increased after processing.…”

Physico-Functional Characterization of Flour and Protein Isolates from Nigeria Cultivated Solojo Cowpea [Vigna unguiculata (L.) WALP]

“…Approximately 1 mL of the supernatant was taken and 2,2'-Bipyridine solution (about 1.5 mL) added. Measurement of absorbance was then carried out at 420 nm against distilled water [23]. Trypsin measurement was carried out on the bases of extent of inhibition.…”

“…The residue was made to equilibrate for 30 mins after which the absorbances of the solutions were evaluated spectrophotometrically at 410 nm wavelength. An increase of 0.01 absorbance unit at 410 nm indicates one trypsin activity unit inhibition [23].…”

“…The obtained saponin was futher dried at 60 o C in the oven (to eliminate any lingering solvent) cooled and weighed till constant weight is obtained. Percentage saponin was calculated with reference to the original sample [23].…”

Multivariate Analysis Based on Nutritional Value, Antinutritional Profile and Antioxidant Capacity of Forty Chickpea Genotypes Grown in India

“…The wild bean has the highest phytic acid level compared to edible bean. The Nigerian bean showed varying levels of antinutrients when unprocessed but decreased marginally after malting [23].…”