<abstract xmlns="http://www.w3.org/1999/xhtml"><p> Vietnam Robusta Coffee was roasted at different roasting degree and roasting temperature and 9 element concentrations (K, Mg, Ca, Na, Fe, Cu, Mn, Zn and Pb) of roasted coffee were analyzed by Flame atomic absorption method (FAAS) in this study. The results showed that the concentrations were ranged in 1447.97 ~ 1342.10 (mg/100g), 768.22 ~ 1259.44 (μg/g),10.35 ~ 13.15 (μg/g), and 17.38 ~ 20.97 (μg/g) for element of K, Ca, Cu and Mn in green and roasted coffee beans, respectively. All determined elements were the smallest value in green coffee, then increased with increasing roasting level and reached the highest value in Spain roast (roasting temperature of 250°C). Mg concentration ranged in 682.70 ~ 3647.73 (μg/g); Fe concentration ranged in 37.20 ~ 53.44 (μg/g); Zn concentration ranged in 5.97 ~ 6.89 (μg/g) and Pb concentration ranged in 2.18 ~ 15.04 (μg/100g). Concentrations of all determined elements didn’t change with the increased roasting process. </p></abstract>

Vietnam Robusta Coffee was roasted at different roasting degree and roasting temperature and 9 element concentrations (K, Mg, Ca, Na, Fe, Cu, Mn, Zn and Pb) of roasted coffee were analyzed by Flame atomic absorption method (FAAS) in this study. The results showed that the concentrations were ranged in 1447.97 ~ 1342.10 (mg/100g), 768.22 ~ 1259.44 (μg/g),10.35 ~ 13.15 (μg/g), and 17.38 ~ 20.97 (μg/g) for element of K, Ca, Cu and Mn in green and roasted coffee beans, respectively. All determined elements were the smallest value in green coffee, then increased with increasing roasting level and reached the highest value in Spain roast (roasting temperature of 250°C). Mg concentration ranged in 682.70 ~ 3647.73 (μg/g); Fe concentration ranged in 37.20 ~ 53.44 (μg/g); Zn concentration ranged in 5.97 ~ 6.89 (μg/g) and Pb concentration ranged in 2.18 ~ 15.04 (μg/100g). Concentrations of all determined elements didn’t change with the increased roasting process.

Effect of Roasting Conditions on Concentration in Elements of Vietnam Robusta Coffee

College of Mechanical and Electronic Engineering, Northwest A&F University, 712100, China

VietNam Russian Vocation College N01, Phuc Yen city 283 400, Vinh Phuc province, Viet Nam

College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling 712100, China

Department of Wood Science and Engineering, Oregon State University, Corvallis, Oregon 97331, USA

College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China

Vietnam Forsetry University, Xuan Mai area, Chuong My district, HaNoi city 100000, Viet Nam

Acta Universitatis Cibiniensis. Series E: Food Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Vietnam Robusta Coffee was roasted at different roasting degree and roasting temperature and 9 element concentrations (K, Mg, Ca, Na, Fe, Cu, Mn, Zn and Pb) of...

Effect of Roasting Conditions on Concentration in Elements of Vietnam Robusta Coffee

Publié en ligne: 30 déc. 2014

Pages: 19 - 34

DOI: https://doi.org/10.2478/aucft-2014-0011

© Lucian Blaga University

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.