Biogenic Amines, Phenolic, and Aroma-Related Compounds of Unroasted and Roasted Cocoa Beans with Different Origin

Biogenic amines (BAs), polyphenols, and aroma compounds were determined by chromatographic techniques in cocoa beans of different geographical origin, also considering the effect of roasting (95, 110, and 125 &#176;C). In all samples, methylxantines (2.22&#8722;12.3 mg kg<sup>&#872...

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Bibliographic Details
Main Authors: Umile Gianfranco Spizzirri, Francesca Ieri, Margherita Campo, Donatella Paolino, Donatella Restuccia, Annalisa Romani
Format: Article
Language:English
Published: MDPI AG 2019-08-01
Series:Foods
Subjects:
Online Access:https://www.mdpi.com/2304-8158/8/8/306
Description
Summary:Biogenic amines (BAs), polyphenols, and aroma compounds were determined by chromatographic techniques in cocoa beans of different geographical origin, also considering the effect of roasting (95, 110, and 125 &#176;C). In all samples, methylxantines (2.22&#8722;12.3 mg kg<sup>&#8722;1</sup>) were the most abundant followed by procyanidins (0.69&#8722;9.39 mg kg<sup>&#8722;1</sup>) and epicatechin (0.16&#8722;3.12 mg kg<sup>&#8722;1</sup>), all reduced by heat treatments. Volatile organic compounds and BAs showed variable levels and distributions. Although showing the highest BAs total content (28.8 mg kg<sup>&#8722;1</sup>), Criollo variety presented a good aroma profile, suggesting a possible processing without roasting. Heat treatments influenced the aroma compounds especially for Nicaragua sample, increasing more than two-fold desirable aldehydes and pyrazines formed during the Maillard cascade and the Strecker degradation. As the temperature increased, the concentration of BAs already present in raw samples increased as well, although never reaching hazardous levels.
ISSN:2304-8158