期刊
MOLECULES
卷 26, 期 6, 页码 -出版社
MDPI
DOI: 10.3390/molecules26061810
关键词
honey; botanical origin; phenolic compounds; antioxidant activity
资金
- MINISTER OF SCIENCE AND HIGHER EDUCATION under the program Regional Initiative of Excellence in 2019-2022 [029/RID/2018/19]
Buckwheat honeys exhibited the strongest antioxidant activity due to their high concentrations of total phenols, total flavonoids, p-hydroxybenzoic acid, caffeic acid, p-coumaric acid, vanillic acid, and chrysin. Principal component analysis showed significant relationships between the botanical origin of honey, total content of phenolic compounds and flavonoids, and antioxidant activity. Strong correlations were observed between antioxidant activity and total phenolic content, total flavonoid content, p-hydroxybenzoic acid, caffeic acid, and p-coumaric acid. Analysis of four principal components confirmed the distinctiveness of Polish honeys in terms of their antioxidant activity and phenolic compound content.
The study compared the content of eight phenolic acids and four flavonoids and the antioxidant activity of six Polish varietal honeys. An attempt was also made to determine the correlations between the antioxidant parameters of the honeys and their polyphenol profile using principal component analysis. Total phenolic content (TPC), total flavonoid content (TFC), antioxidant activity (ABTS) and reduction capacity (FRAP) were determined spectrophotometrically, and the phenolic compounds were determined using high-performance liquid chromatography (HPLC). The buckwheat honeys showed the strongest antioxidant activity, most likely because they had the highest concentrations of total phenols, total flavonoids, p-hydroxybenzoic acid, caffeic acid, p-coumaric acid, vanillic acid and chrysin. The principal component analysis (PCA) of the data showed significant relationships between the botanic origin of the honey, the total content of phenolic compounds and flavonoids and the antioxidant activity of the six Polish varietal honeys. The strongest, significant correlations were shown for parameters of antioxidant activity and TPC, TFC, p-hydroxybenzoic acid, caffeic acid and p-coumaric acid. Analysis of four principal components (explaining 86.9% of the total variance), as a classification tool, confirmed the distinctiveness of the Polish honeys in terms of their antioxidant activity and content of phenolic compounds.
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