Abstract
Peptides are critical to the taste of dry-cured ham. To isolate and identify umami peptide fractions from the water-soluble extractions (WSEs) of Jinhua and Parma hams, separation procedures utilizing Sephadex G-25 and reversed-phase high-performance liquid chromatography (RP-HPLC) were combined with sensory evaluations (taste dilution analysis and an electronic tongue). The amino acid sequences of the umami peptides, Cys-Cys-Asn-Lys-Ser-Val (CCNKSV) from Jinhua ham and Ala-His-Ser-Val-Arg-Phe-Tyr (AHSVRFY) from Parma ham, were identified by MALDI-TOF-MS; subsequently, both were synthesized, and their umami taste properties were evaluated. The results indicate that the tastes of the umami peptides were similar to those of the hams' WSEs.
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