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Título: | Identification of aroma compounds and precursors of sour guava (Psidium friedrichsthalianum Nied.) following a sensomics approach |
Autor: | Cuadrado-Silva, Carmen Tatiana; Pozo-Bayón, Mª Ángeles CSIC ORCID ; Osorio, Coralia | Palabras clave: | Cysteine-S-conjugates Myrtaceae Odour-active volatiles Glycosidic aroma precursors AEDA |
Fecha de publicación: | 2017 | Editor: | Springer Nature | Citación: | European Food Research and Technology 243(1): 1-10 (2017) | Resumen: | In this work, a sensomics approach was followed to determine the chemical constituents responsible for sour guava (Psidium friedrichsthalianum Nied.) aroma. The odour-active volatiles were isolated by solvent-assisted flavour evaporation (SAFE) with dichloromethane. By application of the aroma extract dilution analysis (AEDA), ethyl butanoate and ethyl hexanoate, 3-sulphanylhexyl acetate (sulphury), and δ-dodecalactone (fruity) were identified with the highest flavour dilution factors among the 18 odour-active compounds. Quantitative measurements performed with the internal standard method allowed to calculate the odour activity values and revealed the important role of ethyl butanoate, (Z)-3-hexenal, and ethyl hexanoate as key aroma compounds in this fruit. The sulphur compounds, dimethyl disulphide, 2-methyl-1,3-dithiolane, methional, 3-sulphanylhexyl acetate, 3-sulphanyl-1-hexanol, and bis(methylthio)methane, are reported here as sensory relevant odorants to the flavour of this fruit. The role of hexyl-β-l-glucopyranoside and 3-(1-hexanol)-l-cysteine as precursors of hexanol, and 3-sulphanyl hexanol, respectively, was demonstrated by enzymatic hydrolysis of corresponding precursor mixtures. | URI: | http://hdl.handle.net/10261/150631 | DOI: | 10.1007/s00217-016-2716-y | Identificadores: | doi: 10.1007/s00217-016-2716-y e-issn: 1438-2385 issn: 1438-2377 |
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