Modified Phenolic Profiles and Enhanced Antioxidant Activity in Germinated Proso Millets

Modified Phenolic Profiles and Enhanced  Antioxidant Activity in Germinated Proso Millets-min

In a new study published in Food Chemistry: X journal, Trust Beta from the University of Manitoba in Canada and her team investigated the changes in phenolic profiles and antioxidant activity of three varieties of proso millet during germination.

Total phenolic content (TPC) and total flavonoid content (TFC) increased significantly with prolongation in germination period. After germination for 6 days, TPC of the free and bound fractions increased 6.30–8.66-fold and 77.65–116.18%, respectively.

The free and bound phenolic compounds identified by UPLC-MS/MS, displayed significant variations. Feruloylquinic acid and N,N′-bis-(p-coumaroyl)-putrescine biosynthesized during germination, are reported for the first time in proso millets. Other phenolics including trans- and cis-ferulic, trans-p-coumaric, vanillic acid and ferulic acid dimers (DFAs) were increased significantly along with a new DFA (8,5′-DFA) seemingly produced during germination.

The germinated proso milllets displayed superior antioxidant activity than the corresponding ungerminated samples indicating that germination could be one applicable method for improving phenolic profiles and antioxidant capacity of proso millets. Thus germinated proso millet could be exploited as a functional ingredient in several products.

In Brief their obtained results showed that:

  • Phenolic profiles of proso millet were modified substantially through germination.
  • Feruloylquinic acid and N,N′-bis-(p-coumaroyl) putrescine were firstly identified.
  • Germination significantly improved antioxidant activity of proso millet.
  • Germinated proso millets could serve as healthy ingredients in various foods.

Article DOI.

Image Credits: jcomp on Freepik

 Dr. Beta will be joining Polyphenols Applications 2023 this September to elaborate on Phenolic Compounds, bioaccessibility and Characterization in foods. You can book your spot here to joun and learn more about Dr. Beta's talk. You can also get introduced to this year's speakers here.

Polyphenols Applications 2023 Congress
September 29-29, 2023 - Malta
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