Image analysis to determinate the saponin content in quinoa

• Autor(a) principal: Souza, Luiz Augusto Copati
• Data de Publicação: 2004
• Outros Autores: Spehar, Carlos Roberto, Santos, Roberto Lorena Bastos
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Pesquisa Agropecuária Brasileira (Online)
• Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/6786
• topic: RGB; genotype; glycoside; correlation; multivariate analysis; RGB; genótipo; glicosídeo; correlação; análise multivariada

A group of washed seeds and thirty five genotypes of quinoa (Chenopodium quinoa, Willd) were screened by soap column method and were classified by RGB Color Model (R, red; G, green; B, blue) with the objective to determine the influence of the saponin content in the grain color. Yellow seeds presented high levels of saponin. There was negative correlation (p≤0.05) among soap column method and bands R (r = -0.751), G (r = -0.660) and B (r = -0.594). Four groups were fixed. Tests confirmed the access of group 4 as bitter (yellow seeds) and the access of group 1 as sweet (white seeds). The dispersion represents probable difference in gene frequency, reflected by the color and rate of saponin.