No significant adverse effects were observed. The first study was a 90-day rat oral toxicity study, which compared the effects of diets containing 50% of either brown dehulled glabrous, brown hulled glabrous, or brown hulled pubescent (hairy) hulled canary seed to a diet containing 50% wheat. The objective of the oral feeding studies reported here was to assess the safety of yellow and brown glabrous canary seed cultivars as human cereal foods. Glabrous or hairless canary seed has potential human food use as trichomes are absent. Magnuson, B A Patterson, C A Hucl, P Newkirk, R W Ram, J I Classen, H LĬanary seed is a nutrient-rich cereal grain however, it has not been used in human food in part due to concerns regarding safety of consumption. Safety assessment of consumption of glabrous canary seed ( Phalaris canariensis L.) in rats. The EAW extraction process seems to be more promising in canary seed fractionation based on recovery and purity of components. Fiber component separated prior to alkaline extraction contained high amounts of nonfiber components as indicated by its yield. The highest purity of protein, however, was obtained when canary seed was fractionated by the EWA process, that is, defatted and then extracted with water followed by alkali. Using this process, approximately 92% pure starch, 75% pure protein, and oil were recovered from canary seed groats. Highest extraction efficiencies were obtained when canary seed was defatted with ethanol and then extracted with alkali and water (EAW process). Three wet milling procedures based on ethanol (E), water (W), and alkaline (A) extractions used in different order were investigated to determine extraction efficiency and purity of starch, protein, oil, and fiber separated from hairless canary seed, a variety developed for human consumption. However, canary seed holds a promise for many food and industrial applications based on its composition. The current market for this true cereal (i.e., belonging to the family Poaceae as wheat) is limited to feed for caged birds. Canary seeds may be considered an accessible and cheap source to prepare milk substitutes with high contents of bioactive peptides with remarkable functional properties to promote better human health and healthy ageing.įractionation of hairless canary seed ( Phalaris canariensis) into starch, protein, and oil.Ībdel-Aal, El-Sayed M Hucl, Pierre Patterson, Carol Ann Gray, DanielleĬanary seed is an important specialty crop in Canada. Purification by high performance liquid chromatography (HPLC), sequencing of peptides, in vitro antioxidant ABTS (2,2'-azino-bis, 3-ethylbenzothiazoline-6-sulphonic acid) and DPPH (2,2-diphenyl-1-picrylhydrazyl) assays, and antihypertensive capacity (angiotensin converting enzyme (ACE) assay), indicated that peptides from canary seed prolamins were the most efficient compounds with antioxidant and antihypertensive activity. After digestion, albumins and prolamins fractions from milks presented higher levels of peptides than flour, globulins showed more peptides in flour and glutelins were found in similar concentrations in all samples 24 h milk prolamins had the highest concentration of peptides. Prolamins were the major protein fraction, followed by glutelins. The aim of this work was to analyze the protein fractions from canary seed flour and from milk substitutes (prepared by soaking the seeds in water 12 and 24 h), and to evaluate antioxidant and antihypertensive capacity of peptides obtained after in vitro digestion. Valverde, MarÃa Elena Orona-Tamayo, Domancar Nieto-Rendón, Blanca Paredes-López, OctavioĬanary seed ( Phalaris canariensis) is used to feed birds but it has been recently considered a promising cereal with nutraceutical potential for humans. Antioxidant and Antihypertensive Potential of Protein Fractions from Flour and Milk Substitutes from Canary Seeds ( Phalaris canariensis L.).
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