A high-protein soybean cultivar contains lower isoflavones and saponins but higher minerals and bioactive peptides than a low-protein cultivar

Luz Maria Paucar-Menacho, Jaime Amaya-Farfán, Mark A. Berhow, José Marcos Gontijo Mandarino, Elvira Gonzalez de Mejia, Yoon Kil Chang

Research output: Contribution to journalArticlepeer-review

Abstract

Soybean is a major source of protein and other nutrients and non-nutrient bioactives for human health. The objective was to compare the bioactive compounds of a low-protein (BRS 133) soybean in comparison to a high-protein (BRS 258) soybean cultivar. The high-protein soybean contained 17% lower carbohydrates and a lower chemical score (63) in relation to the low-protein soybean, which had a higher chemical score (76), associated with the higher methionine content (1.2%). Cultivar BRS 258 had more calcium (15.5%), phosphorus (30.1%), iron (18.7%), copper (9.0%) and zinc (11.5%), and a higher concentrations of lunasin, BBI and lectin (20.3%, 19.0% and 27.1%, respectively) than the low-protein cultivar. BRS 133 had 75.4% higher concentration of total isoflavones (5.1% of total aglycones) and 31.0% total saponins, as compared to BRS 258. It was concluded that the low-protein soybean cultivar contained higher isoflavones and saponins, but lower levels of minerals and bioactive peptides, such as lunasin.

Original languageEnglish (US)
Pages (from-to)15-21
Number of pages7
JournalFood chemistry
Volume120
Issue number1
DOIs
StatePublished - May 1 2010

Keywords

  • BBI
  • Bioactive compounds
  • Chemical score
  • Isoflavones
  • Lectins
  • Lunasin
  • Saponins
  • Soybean

ASJC Scopus subject areas

  • Analytical Chemistry
  • Food Science

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