Optimisation of the post-harvest conditions to produce chocolate aroma from jackfruit seeds

Papa Spada, F., Masson Zerbeto, L., Cabreira Ragazi, G., Roel Gutierrez, E., Coelho Souza, M., Parker, J. K. ORCID: https://orcid.org/0000-0003-4121-5481 and Canniatti-Brazaca, S. (2017) Optimisation of the post-harvest conditions to produce chocolate aroma from jackfruit seeds. Journal of Agricultural and Food Chemistry, 65 (6). pp. 1196-1208. ISSN 0021-8561 doi: 10.1021/acs.jafc.6b04836

Abstract/Summary

Jackfruit seeds are an under-utilized waste in many tropical countries. In this work, we demonstrate the potential of roasted jackfruit seeds to develop chocolate aroma. Twenty-seven different roasted jackfruit seed flours were produced from local jackfruit by acidifying or fermenting the seeds prior to drying, and roasting under different time/temperature combinations. The chocolate aroma of groups of four flours were ranked by a sensory panel (n=162) and response surface methodology was used to identify optimum conditions. The results indicated a significant and positive influence of fermentation and acidification on the production of chocolate aroma. SPME/GC-MS of the flours showed that important aroma compounds such as 2,3-diethyl-5-methylpyrazine and 2-phenylethyl acetate were substantially higher in the fermented product, and that the more severe roasting conditions produced 2-3 times more 2,3-diethyl-5-methylpyrazine, but less 3-methylbutanal. Moisture, aw, pH, luminosity and color were also monitored to ensure that these properties were similar to cocoa powder or cocoa substitutes.

Item Type	Article
URI	https://reading-clone.eprints-hosting.org/id/eprint/68248
Item Type	Article
Refereed	Yes
Divisions	Life Sciences > School of Chemistry, Food and Pharmacy > Department of Food and Nutritional Sciences > Food Research Group
Publisher	American Chemical Society
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