TITLE:
Nutritional and Mineral Variability in 52 Accessions of Common Bean Varieties (Phaseolus vulgaris L.) from Madeira Island
AUTHORS:
Carla S. S. Gouveia, Gregório Freitas, José H. de Brito, Jan J. Slaski, Miguel Â. A. Pinheiro de Carvalho
KEYWORDS:
Phaseolus vulgaris L.; Beans; Genetic Resources; Proximal Analysis; Nutritional Value; Mineral Composition; Variability; Food Quality
JOURNAL NAME:
Agricultural Sciences,
Vol.5 No.4,
March
21,
2014
ABSTRACT: The Phaseolus
vulgaris L. is one of the traditional and most important leguminous crops
in the Island of Madeira. The island’s bioclimatic tiers,
agro-ecological environment and traditional farming practices had a great influence
on the evolution of regional bean landraces. The variability of the nutritional
and mineral seeds composition of 59 accessions of the Madeiran landraces,
standard and commercial varieties was evaluated. Wide ranges of variability in
biochemical parameters were reported among the Madeiran landraces, being the
best sources of protein and mineral nutrition, according to the statistical
results and literature comparative evaluation. Specifically, the content (g per
100 g DW) of ash ranged from
3.64-5.67, lipids from 0.57-2.86, protein from 18.55-29.69, starch from 23.40-52.65, soluble sugars from 2.97-6.84, while content of dry matter was from 83.35-93.55. The seeds also contained (per 100 g DW) between 2.55-4.83 g N, 0.30-7.50 g P, 1.30-2.49 g K, 0.10-0.18 g Mg, 4.10-10.00 mg Fe, 50.0-1.40 mg Cu, 2.20-5.00 mg Zn, 0.90-3.80 μg Mn and 0.20-2.40 μg B. This variability implies that the screened
germplasm could serve as a source for breeding new varieties with improved
biochemical and nutritional traits or could be highly recommended to meet
specific dietary requirements. The cultivar Vaginha
Grossa (ISOP 713) revealed low carbohydrate content that could be a good
food choice for diabetics, while cultivar Vermelho (ISOP 724) bean should be offered as a valuable alternative source of protein
and minerals in the local diet.