期刊
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
卷 36, 期 1-2, 页码 1-11出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jfca.2014.04.009
关键词
Solanum tuberosum L.; Potato peel; Potato flesh; HPLC-DAD-ESI-q-TOF; Phenolic compounds; Antioxidant capacity; Food analysis; Food composition
资金
- Spanish Ministry of Science and Innovation [AGL2011-29857-C03-02 372]
- Andalusian Regional Government Council of Innovation and Science, Spain [Po9 CTS 4564, P10 FQM 6563]
Potato (Solanum tuberosum L.) is one of the most widely grown crops worldwide. It represents a staple source of nutrients including carbohydrates, high-quality proteins, minerals, vitamins and polyphenols. This study aimed to identify mainly polyphenols in flesh, peel, and whole tuber of two potato cultivars (Blue Bell and Melody) by high performance liquid chromatography-diode array detector-electrospray ionization-quadrupole-time of flight-mass spectrometry (HPLC-DAD-ESI-q-TOF-MS) analysis and to quantify the main polyphenols by ultraviolet-visible (UV-vis) in order to evaluate their distribution. The antioxidant activity of the three fractions of both cultivars by ferric reducing antioxidant power (FRAP), trolox equivalent antioxidant capacity (TEAC) and oxygen radical absorbance capacity (ORAC) was also studied. A total of 24 polar compounds were identified in less than 25 min. Three caffeoylquinic acid isomers, caffeic acid, 3,5-dicaffeoylquinic acid, and N-[2-hydroxy-2-(4-hydroxyphenyl) ethyl] ferulamide were the main phenolic compounds in the three fractions of the two potato cultivars. Blue Bell was the cultivar with the highest phenolic-compound content, while the peels were the part with the highest phenolic-compound content as well as the highest antioxidant activity. The results established potato peels as an attractive by-product of the potato industry because they can be used as an alternative source of polyphenols in the food industry and used in other food products. (C) 2014 Published by Elsevier Inc.
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