Abstract
AbstractBackground and objectivesTeff grains are subjected to several treatments, such as cooking and baking, and studies on the impact of thermal treatments such as roasting on the bioactive properties, phenolic compounds, fatty acids, and minerals of teff grains are scarce. The objective of this study was to evaluate the effect of microwave and oven roasting processes on total phenol, antioxidant activity, fatty acid compositions, and phenolic compounds of teff grains.FindingsRoasting treatments greatly influenced the biochemical content and bioactive properties of teff grains. Roasting increased oil, carotenoids, total flavonoids, and antioxidant activity of teff grains with the highest values being observed in microwave‐roasted grains, except total flavonoids of soluble fraction which was highest in oven‐roasted grains. It also increased total phenolic of soluble fraction and most phenolic compounds in both soluble and bound fractions with the highest values being found in conventional oven‐roasted grains, except gallic acid, trans‐cinnamic acid, naringenin, and isorhamnetin which were high in control samples. In addition, oven roasting increased palmitic acid, linoleic acid, nickel, and boron, whereas microwave roasting increased the content of stearic acid, calcium, magnesium, sodium, iron, copper, zinc, and lead of teff grains compared to controls.ConclusionsThe findings of this study indicate that teff grains are suitable sources of nutrients and bioactive compounds that could be enhanced by roasting.Significance and noveltyThe teff grains have high nutritional value, antioxidants, fatty acids, and phenolic compounds which are improved by roasting treatment and hence probable potential application in functional foods. Studying the effects of processing treatments such as roasting of teff grain will help in promoting the worldwide utilization of this important gluten‐free cereal.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
