AI Article Synopsis
- Citrus peels are found to have beneficial health effects due to their high levels of antioxidants, with mandarin peels showing the highest total phenols and flavonoids.
- Kumquat peels contained the most phenolic acid, particularly protocatechuic acid, emphasizing unique properties among citrus varieties.
- The study highlights a strong link between the composition of phenolic compounds and the genetic background of different citrus types, suggesting potential for future research and use of citrus peels.
Article Abstract
Citrus peels have health-promoting effects and are a rich source of antioxidant substances. This study evaluated the compositions of phenolic compounds and antioxidant activities in the peels of 52 citrus varieties with consistent planting time and management. The highest levels of total phenols (72.95 ± 37.60 mg/g DW) and total flavonoids (71.43 ± 37.64 mg/g DW) were found in mandarin. The highest phenolic acid content (18.78 ± 0.38 mg/g DW), dominated by protocatechuic acid, was found in kumquat. The antioxidant potency composite index was 6.23-94.56, suggesting mandarin varieties HJ, TWPG, TTPG, AY28, BZH and TCJC had the highest antioxidant activity. Statistics analysis indicated phenolic compounds and antioxidant activity were positively correlated. Principal component analysis and hierarchical cluster analysis suggested a strong relationship between phenolic compound composition and genetic background. This study indicated significant differences in the biological properties of various types of citrus peels; which are valuable for future utilization and research of citrus peels.
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| http://dx.doi.org/10.1016/j.foodchem.2021.130413 | DOI Listing |
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