期刊
PROCESSES
卷 9, 期 4, 页码 -出版社
MDPI
DOI: 10.3390/pr9040620
关键词
antioxidant activity; polyphenols; beer samples; packaging material
资金
- Department of Pharmaceutical Sciences, University of Constantza
The study found considerable variations in total polyphenol content, individual phenolic contents, and antioxidant activity among 10 commercial lager beer brands produced in Romania. Statistical analysis indicated significant differences in antioxidant activity levels detected using different methods and across different packaging materials.
Using two methods (ferric reducing antioxidant power and radical scavenging activity), the total polyphenol content (Folin-Ciocalteu reagent) and polyphenol patterns (HPLC) in 10 commercial lager beer brands produced in Romania was determined. Samples bottled in glass, plastic and aluminium packages were analysed for each brand when available. Results have indicated considerable variations in the total and individual phenolic contents as well as antioxidant activity across beer brands. Gallic and feulic acids were the dominant phenolic compounds identified samples. The statistical analysis indicates a significant difference between the levels of antioxidant activity detected using DPPH and FRAP, for all three types of material considered. The statistical test ANOVA indicates that the polyphenol concentration is similar across all types of material.
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