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Variation in total phenolic content and antioxidant activity of Prunus cerasifera Ehrh. selections from Mediterranean region of Turkey

Profile image of Kazim GÜNDÜZKazim GÜNDÜZ

2012, Scientia Horticulturae

https://doi.org/10.1016/J.SCIENTA.2011.11.003
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5 pages

Abstract

Several fruit characteristics were determined along with the total phenolic content (TP) and total antioxidant capacities (TAC) of eighteen Prunus cerasifera accessions previously selected from the Mediterranean region of Turkey and grown in Mut, Mersin, Turkey. Five cultivars ('Can2', 'Cin', 'Havran', 'Ozark Premier' and 'Papaz') from the same orchard were also included in this study. TP and TAC were determined by ferric reducing ability (FRAP) and trolox-equivalent antioxidant capacity (TEAC) assays. The accessions were found to be significantly different for all the characters tested. TP ranged between 136.8 ('Ozark Premier') and 583.1 (Selection No. 3) Gallic acid equivalent (GAE)/kg fresh weight (fw) while FRAP and TEAC measurements of TAC ranged between 0.123 (Selection 33C 02) and 0.127 (Selection 31C 18) to 0.835 ('Can 2') and 0.420 (Selection No. 8) mmol TE/kg fw. The correlation analysis indicated that TP was significantly correlated with L and hue • values of color measurements. While FRAP was found to be correlated with pH, no significant correlation was detected with TEAC. A notable variation among the green-fleshed P. cerasifera accessions was reported for TP and TAC and, P. cerasifera had comparable TP to other plum species while it did not have a good antioxidant activity.

Key takeaways
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  1. Total phenolic content (TP) varied significantly among 18 Prunus cerasifera accessions, ranging from 136.8 to 583.1 mg GAE/kg fw.
  2. Total antioxidant capacities (TAC) using FRAP and TEAC assays ranged from 0.123 to 1.411 mmol TE/kg fw.
  3. Correlation analysis revealed significant relationships between TP, color measurements, and pH, but not with TEAC.
  4. No significant correlation existed between TP and TAC, contrasting previous studies on other plum species.
  5. This study evaluated the diversity of P. cerasifera for fruit characteristics, TP, and TAC, revealing notable variation.

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FAQs

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What phenolic content and antioxidant capacity ranges were identified in P. cerasifera?add

Total phenolic content averaged 385.2 mg GAE/kg fw, ranging from 136.8 to 583.1 mg GAE/kg fw. Antioxidant capacity varied between 0.123 and 1.411 mmol TE/kg fw for FRAP and TEAC assays.

How were the total phenolic content and antioxidant activity measured?add

Total phenolic content was measured using Folin-Ciocalteu’s method, while TAC was estimated via FRAP and TEAC assays. Each assay involved replicates for consistency and reliability in results.

What trends were observed in fruit characteristics among P. cerasifera accessions?add

Fruit width averaged 25.4 mm, and weight averaged 9.1 g, with notable variations among selections. The soluble solid content ranged from 7% to 12%, indicating differences in sweetness.

Why was there no significant correlation between TP and TAC in this study?add

Unlike other plum species studies, low TAC levels in P. cerasifera likely obscure any correlation. Previous studies reported significant correlations, such as r² = 0.89 for P. domestica cultivars.

What does PCA reveal about the diversity among the examined plum accessions?add

PCA depicted no clear grouping among accessions, suggesting a complex diversity pattern. The first three principal components explained 64% of the total variation, highlighting relationships between fruit characteristics.

About the author
Kazim GÜNDÜZ
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