کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6398963 | 1330686 | 2012 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Aroma delivery from spray dried coffee containing pressurised internalised gas Aroma delivery from spray dried coffee containing pressurised internalised gas](/preview/png/6398963.png)
A non-chemical, ingredient free method of enhancing aroma delivery during the preparation of instant coffee is presented. The approach detailed introduces a method for entrapping high pressure internalised gas within the pores of spray dried soluble coffee by cycling of both pressure and temperature. The headspace delivery of volatile aroma compounds during powder hydration was tracked by an atmospheric pressure chemical ionisationâquadrupole mass spectrometer, with a modified ion source. The release of pressurised gas on hydration caused a burst of volatile aroma compounds into the headspace, which was both faster (77%) and more intense (60%) than could be achieved using standard instant coffee or through the use of chemical effervescent agents alone (sodium hydrogen carbonate and citric acid). In addition, the process of natural gasification selectively accelerated the delivery of individual aroma compounds, with the time to maximum headspace intensity being reduced for both 2,3 butanedione and acetaldehyde.
⺠Pressurised gas was incorporated within spray dried coffee. ⺠The impact of gas release on aroma delivery was evaluated during hydration. ⺠Pressurised gas enhanced the speed of delivery of headspace aroma during hydration. ⺠Pressurised gas enhanced the intensity of headspace aroma during hydration. ⺠Impact of pressurised gas was aroma compound specific.
Journal: Food Research International - Volume 49, Issue 2, December 2012, Pages 702-709