Influence of storage on darkening and hardening of slow- and regular-darkening carioca bean (Phaseolus vulgaris L.) genotypes
Carregando...
Data
2014
Título da Revista
ISSN da Revista
Título de Volume
Editor
Resumo
New carioca bean cultivars are being introduced into the market necessitating their evaluation
under trade conditions, which often require storage under ambient conditions. We therefore
evaluated the darkening and hardening processes of six carioca bean genotypes each
representing regular and slow darkening trait during storage under ambient conditions for five
months to elucidate their relationship as a breeding strategy. Storage time adversely affected
color characteristics (L*, a*, b*, C* and ΔE) depending on bean genotype, whereas hardness
and resistance to cooking increased during storage independent of the lignification process.
Bean darkening and hardening occurred during storage at different intensities in each genotype
and were not always correlated. BRSMG-Madrepérola, a slow darkening genotype, was
unaffected (resistant to storage conditions), whereas BRS-Pontal with regular tegument
darkening, was highly susceptible to storage conditions reflected in extended cooking time and
darkening (low L* values). Principal component and cluster analyses on 8 constituents
analyzed in this study demonstrate the difference in color characteristics, cooking time and
hardness as major factors in segregating the bean genotypes. Seed coat color is an important
but inappropriate single parameter for predicting the resistance to cooking or hardness induced
by storage of carioca beans under ambient conditions. Development of carioca bean genotypes
resistant to storage conditions is essential in reducing food losses during postharvest.
Descrição
Palavras-chave
Ambient conditions, Phaseolus vulgaris, Chromaticity, Cooking time, Darkening, hardness, Lignification, Luminosity, Carioca
Citação
SIQUEIRA, Beatriz S. et al. Influence of storage on darkening and hardening of slow- and regular-darkening carioca bean (Phaseolus vulgaris L.) genotypes. Journal of Agricultural Studies, Las Vegas, v. 2, n. 2, p. 87-104, 2014.