Optimization of Postharvest Conditions To Produce Chocolate Aroma from Jackfruit Seeds

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• 作者：Fernanda Papa SpadaLais Masson Zerbeto ; Gabriel Bernardes Cabreira Ragazi ; Érika Maria Roel Gutierrez ; Miriam Coelho Souza ; Jane K. Parker ; Solange Guidolin Canniatti-Brazaca
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：2017
• 出版时间：February 15, 2017
• 年：2017
• 卷：65
• 期：6
• 页码：1196-1208
• 全文大小：564K
• ISSN：1520-5118

文摘

Jackfruit seeds are an underutilized waste in many tropical countries. This work demonstrates 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 then 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, a_w, pH, luminosity, and color were also monitored to ensure that these properties were similar to those of cocoa powder or cocoa substitutes.