Ethanol influenced microwave-assisted extraction was performed for obtaining of natural antioxidants from spent filter coffee. The process included response surface methodology which represented the significance of both investigated variables (ethanol concentration and time of microwave radiation) on all tested responses (extraction yield, total polyphenol content (TPC), DPPH radical inhibition activity and ferric reducing ability, FRAP). The highest TPC of 398.95 mg GAE/g of extract dry matter was obtained with 20% aqueous ethanol solution under just 40 s of microwave radiation (80 W), which implies that method was very effective and thereby saved time and chemicals. Obtained extracts showed great antioxidant activities in vitro. Even 20 mu g/mL of working extract concentration inhibited 90.47% of DPPH radicals. The results suggest that examined method provides fast obtaining of high values of bioactive compounds and also ensures their biological stability.
TY - JOUR
AU - Pavlović, Marija D.
AU - Buntić, Aneta
AU - Šiler-Marinković, Slavica
AU - Dimitrijević-Branković, Suzana
PY - 2013
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2443
AB - Ethanol influenced microwave-assisted extraction was performed for obtaining of natural antioxidants from spent filter coffee. The process included response surface methodology which represented the significance of both investigated variables (ethanol concentration and time of microwave radiation) on all tested responses (extraction yield, total polyphenol content (TPC), DPPH radical inhibition activity and ferric reducing ability, FRAP). The highest TPC of 398.95 mg GAE/g of extract dry matter was obtained with 20% aqueous ethanol solution under just 40 s of microwave radiation (80 W), which implies that method was very effective and thereby saved time and chemicals. Obtained extracts showed great antioxidant activities in vitro. Even 20 mu g/mL of working extract concentration inhibited 90.47% of DPPH radicals. The results suggest that examined method provides fast obtaining of high values of bioactive compounds and also ensures their biological stability.
PB - Elsevier, Amsterdam
T2 - Separation and Purification Technology
T1 - Ethanol influenced fast microwave-assisted extraction for natural antioxidants obtaining from spent filter coffee
EP - 510
SP - 503
VL - 118
DO - 10.1016/j.seppur.2013.07.035
ER -
@article{
author = "Pavlović, Marija D. and Buntić, Aneta and Šiler-Marinković, Slavica and Dimitrijević-Branković, Suzana",
year = "2013",
abstract = "Ethanol influenced microwave-assisted extraction was performed for obtaining of natural antioxidants from spent filter coffee. The process included response surface methodology which represented the significance of both investigated variables (ethanol concentration and time of microwave radiation) on all tested responses (extraction yield, total polyphenol content (TPC), DPPH radical inhibition activity and ferric reducing ability, FRAP). The highest TPC of 398.95 mg GAE/g of extract dry matter was obtained with 20% aqueous ethanol solution under just 40 s of microwave radiation (80 W), which implies that method was very effective and thereby saved time and chemicals. Obtained extracts showed great antioxidant activities in vitro. Even 20 mu g/mL of working extract concentration inhibited 90.47% of DPPH radicals. The results suggest that examined method provides fast obtaining of high values of bioactive compounds and also ensures their biological stability.",
publisher = "Elsevier, Amsterdam",
journal = "Separation and Purification Technology",
title = "Ethanol influenced fast microwave-assisted extraction for natural antioxidants obtaining from spent filter coffee",
pages = "510-503",
volume = "118",
doi = "10.1016/j.seppur.2013.07.035"
}
Pavlović, M. D., Buntić, A., Šiler-Marinković, S.,& Dimitrijević-Branković, S.. (2013). Ethanol influenced fast microwave-assisted extraction for natural antioxidants obtaining from spent filter coffee. in Separation and Purification Technology
Elsevier, Amsterdam., 118, 503-510.
https://doi.org/10.1016/j.seppur.2013.07.035
Pavlović MD, Buntić A, Šiler-Marinković S, Dimitrijević-Branković S. Ethanol influenced fast microwave-assisted extraction for natural antioxidants obtaining from spent filter coffee. in Separation and Purification Technology. 2013;118:503-510.
doi:10.1016/j.seppur.2013.07.035 .
Pavlović, Marija D., Buntić, Aneta, Šiler-Marinković, Slavica, Dimitrijević-Branković, Suzana, "Ethanol influenced fast microwave-assisted extraction for natural antioxidants obtaining from spent filter coffee" in Separation and Purification Technology, 118 (2013):503-510,
https://doi.org/10.1016/j.seppur.2013.07.035 . .
