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Abstract Plants are important sources of phytochemicals with multiple uses in medicine and other technical fields. Much research attention has been focused on the high natural antioxidant activity of extracts obtained from various plants. Antioxidant activity is a promise not only for biochemical behaviour but also for other reactions involving electron transfer, such as metal protection. Antioxidant activity using the DPPH (2,2-diphenyl-1-picrylhydrazyl) method, total polyphenol (via the Folin-Ciocalteu method), and total flavonoids measured with the aluminium chloride (AlCl3) technique were determined for various ethanol extracts of Yellow Bedstraw or Galium verum (GV). Other methods, such as reverse-phase high-performance liquid chromatography (HPLC) and gas chromatography mass spectrometry (GC-MS), are also emerging, both to reveal the chemical composition of Galium verum extract and to support the presence of antioxidant compounds. The various chemical constituents are classified into categories based on their possible applications: metabolic activity, antioxidant, antimicrobial, antifungal, anti-inflammatory and active components in different drug, treatments or other green industrial usage.
Badea et al. (Wed,) studied this question.