abstract
- © 2014 Akadémiai Kiadó, Budapest.Five elite blue maize hybrids and two blue maize landraces were evaluated for various quality characteristics. Hybrids showed physical characteristics demanded by dry-millers and tortilla processors: above 290 g in one hundred-kernel weight test, higher test weight (76.1-78.5 kg hl-1) and lower flotation index (22-61%). Hybrid maize 613 × 27 (9.9%) and 611 × 8 (9.5%) contained the highest protein. Potassium, magnesium, manganese and zinc contents of hybrid maize were higher than landraces by 15, 30, 55 and 41%, respectively. Nutrimental profile showed linoleic acid contents above 50% in 503 × 67, 613 × 27 and 611 × 8 hybrid samples. Lysine levels of landraces and hybrids 503 × 67 (33.9 g kg-1 protein) and 631 × 27 (31.7 g kg-1 protein) were higher than reported for regular white corn (27 g kg-1 protein), as well as the highest tryptophan levels for Chalqueno (6.0 g kg-1 protein) and hybrid 503 × 67 (6.9 g kg-1 protein). Highest protein quality based on its digestibility was found in hybrid 503 × 67. Results indicated that elite blue maize hybrids could be an important source of nutrimental compounds with potential for functional food industries.