| Research Article: | Comparative evaluation of phenolics and antioxidant activities of hot air and superheated steam roasted coffee beans (Coffea canephora) |
| ผู้เขียน|Author: | Nathamol Chindapan, Nujaree Chaninkun & Sakamon Devahastin |
| Email: | nathamol.chi@siam.edu |
| Department|Faculty: | Department of Food Technology, Faculty of Science, Siam University, Bangkok 10160 |
| ภาควิชา|คณะ: | ภาควิชาเทคโนโลยีการอาหาร คณะวิทยาศาสตร์ มหาวิทยาลัยสยาม กรุงเทพฯ 10160 |
| Published|แหล่งเผยแพร่: | International Journal of Food Science & Technology, 2022, 57(1), pp. 342–350 |
Citation
Chindapan, N., Chaninkun, N., Devahastin, S. (2022). Comparative evaluation of phenolics and antioxidant activities of hot air and superheated steam roasted coffee beans (Coffea canephora). International Journal of Food Science & Technology, 57(1), 342–350.
ABSTRACT
As no investigation has so far been made to study the effect of superheated steam (SHS) roasting in comparison to that of hot air (HA) roasting on bioactive compounds acting as antioxidants in roasted coffee beans, changes in phenolic compounds and antioxidant activities of robusta coffee beans undergone HA and SHS roasting at 210–250 °C to reach a light, medium or dark roast level were investigated. Total phenolics as well as 5-, 4- and 3-CQA contents and ABTS, DPPH and FRAP antioxidant activities significantly decreased, whereas the flavonoid content remained unchanged or even increased with an increased roast level. Highest and lowest caffeic acid contents were noted in medium and dark roasted beans, respectively. All the aforementioned variables belonging to dark roasted beans significantly decreased with decreased roasting temperature, particularly at 210 °C. However, CQAs and caffeic acid contents tended to increase in dark roasted beans when SHS was applied, instead of HA for roasting at 210 °C.
Keywords: Caffeic acid, caffeoylquinic acids, chlorogenic acids, colour, flavonoids.
Comparative evaluation of phenolics and antioxidant activities of hot air and superheated steam roasted coffee beans (Coffea canephora)
คณะวิทยาศาสตร์ มหาวิทยาลัยสยาม | Faculty of Science, Siam University, Bangkok, Thailand