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Determination of caffeic and chlorogenic acids and their derivatives in different sunflower seeds

✍ Scribed by Pedrosa, Mercedes M; Muzquiz, Mercedes; Garc�a-Vallejo, Concepci�n; Burbano, Carmen; Cuadrado, Carmen; Ayet, Gemma; Robredo, Luz M

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
102 KB
Volume
80
Category
Article
ISSN
0022-5142

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✦ Synopsis

Five different genotypes (Tesoro, Marko, Clip, Vyp-70 and Nanta) of sun¯ower seeds were studied and the phenolic compositions of their kernel and hull were characterised by HPLC and MS techniques. The main phenolic compounds present in both the kernel and hull are chlorogenic acid, caffeic acid and two caffeoylquinic derivatives. Both derivatives were characterised by partial alkaline hydrolysis and LC/MS. The four phenolic compounds present in the kernel ranged from 94.6% (genotype Clip) to 99.3% (genotype Marko) of the total phenolic compounds of the whole seed. Therefore the dehulling of the seed scarcely improves its nutritional value.

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