AN ASSESSMENT OF THE QUALITY ATTRIBUTES OF THE IMPERIAL COLLEGE SELECTIONS (ICS) CACAO (THEOBROMA CACAO L.) CLONES
The premise of this study was to identify the best performing clones of the Imperial College Selections (ICS) based on assessment of several important agronomic and industry-relevant parameters over three crop years. Physical, chemical and sensory analyses were carried out on a core-working group of 30 ICS clones selected for their genetic diversity within the Trinitario genetic group, resistance or tolerance to black pod and witches broom diseases and existing international distribution. The results showed that floral was the most promising ancillary flavour with a significant clonal effect. Twenty elite ICS clones from the core-working group were identified as showing a link between quantitative chemical data and the sensory results having both high scores for floral flavour as well as floral aroma volatiles. At least seven of these elite clones were also very productive in terms of total and average productivity over three years, average productivity per tree, high bean weight and high butterfat content. Additionally, some of these clones had high total polyphenol and epicatechin contents as well as Trolox Equivalent Antioxidant Capacities (TEAC). This project has been able to identify some elite ICS clones, which have far-reaching benefits for both the future conservation of the ICS collection as well future research efforts on other cacao collections.
Sukha, D.A., Bharath, S.M., Ali, N.A. and Umaharan, P. (2014). AN ASSESSMENT OF THE QUALITY ATTRIBUTES OF THE IMPERIAL COLLEGE SELECTIONS (ICS) CACAO (THEOBROMA CACAO L.) CLONES. Acta Hortic. 1047, 237-243
Imperial College Selection (ICS), cocoa quality, floral flavour, total polyphenols, epicatechin