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Molecules 2018, 23(2), 435; https://doi.org/10.3390/molecules23020435

Dynamic Changes in Phenolics and Antioxidant Capacity during Pecan (Carya illinoinensis) Kernel Ripening and Its Phenolics Profiles

1
College of Horticulture, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
2
Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, Jiangsu, China
*
Authors to whom correspondence should be addressed.
Received: 25 January 2018 / Revised: 11 February 2018 / Accepted: 12 February 2018 / Published: 16 February 2018
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Abstract

Pecan (Carya illinoinensis) kernels have a high phenolics content and a high antioxidant capacity compared to other nuts—traits that have attracted great interest of late. Changes in the total phenolic content (TPC), condensed tannins (CT), total flavonoid content (TFC), five individual phenolics, and antioxidant capacity of five pecan cultivars were investigated during the process of kernel ripening. Ultra-performance liquid chromatography coupled with quadruple time-of-flight mass (UPLC-Q/TOF-MS) was also used to analyze the phenolics profiles in mixed pecan kernels. TPC, CT, TFC, individual phenolics, and antioxidant capacity were changed in similar patterns, with values highest at the water or milk stages, lowest at milk or dough stages, and slightly varied at kernel stages. Forty phenolics were tentatively identified in pecan kernels, of which two were first reported in the genus Carya, six were first reported in Carya illinoinensis, and one was first reported in its kernel. The findings on these new phenolic compounds provide proof of the high antioxidant capacity of pecan kernels. View Full-Text
Keywords: Carya illinoinensis (Wangenh.) K. Koch; phenolics; antioxidant capacity Carya illinoinensis (Wangenh.) K. Koch; phenolics; antioxidant capacity
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Jia, X.; Luo, H.; Xu, M.; Zhai, M.; Guo, Z.; Qiao, Y.; Wang, L. Dynamic Changes in Phenolics and Antioxidant Capacity during Pecan (Carya illinoinensis) Kernel Ripening and Its Phenolics Profiles. Molecules 2018, 23, 435.

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