Adsorption of green tea polyphenols onto spent coffee grounds
Authors
Buntić, Aneta
Pavlović, Marija

Šiler-Marinković, Slavica

Antonović, Dušan
Dimitrijević-Branković, Suzana

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Some waste materials demonstrated considerable adsorption affinity for phenolic compounds. This property serves two purposes: the recovery and purification of bioactive compounds or fractions from plants, as well as treatment of wastewaters that are leaden by phenolics. This work presented the processing of solutions containing polyphenols by adsorption-desorption studies using spent coffee grounds. As a model system, green tea aqueous extract was prepared. The experiments were performed by batch sorption on a rotary shaker and dynamic column studies. 2 g of spent coffee sample was contacted with 100 ml of green tea extract solution for a predetermined period of time. The results were expressed as the residual total polyphenol concentration of tea extract, measured by the Folin - Ciocalteu method. Batch sorption studies showed a faster removal affinity, compared to column performance. After just 30 min of contact time, the removal percent of tea polyphenols by coffee residues amounted ...40%. The desorption studies were also performed, and the results lead to effective purifying and concentrating of tea polyphenols for its further use.
As this study investigated the adsorbent capacity of no-cost waste material, such as spent coffee, for phenolic compounds binding, the obtained results were noticeable and offered numerous opportunities for a further experiments in this field.
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8th International Conference of the Chemical Societies of the South-East European Countries - Icosecs 8, Beograd, Srbija, 2013, 265-Publisher:
- Serbian Chemical Society
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Tehnološko-metalurški fakultetTY - CONF AU - Buntić, Aneta AU - Pavlović, Marija AU - Šiler-Marinković, Slavica AU - Antonović, Dušan AU - Dimitrijević-Branković, Suzana PY - 2013 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6414 AB - Some waste materials demonstrated considerable adsorption affinity for phenolic compounds. This property serves two purposes: the recovery and purification of bioactive compounds or fractions from plants, as well as treatment of wastewaters that are leaden by phenolics. This work presented the processing of solutions containing polyphenols by adsorption-desorption studies using spent coffee grounds. As a model system, green tea aqueous extract was prepared. The experiments were performed by batch sorption on a rotary shaker and dynamic column studies. 2 g of spent coffee sample was contacted with 100 ml of green tea extract solution for a predetermined period of time. The results were expressed as the residual total polyphenol concentration of tea extract, measured by the Folin - Ciocalteu method. Batch sorption studies showed a faster removal affinity, compared to column performance. After just 30 min of contact time, the removal percent of tea polyphenols by coffee residues amounted 40%. The desorption studies were also performed, and the results lead to effective purifying and concentrating of tea polyphenols for its further use. As this study investigated the adsorbent capacity of no-cost waste material, such as spent coffee, for phenolic compounds binding, the obtained results were noticeable and offered numerous opportunities for a further experiments in this field. PB - Serbian Chemical Society C3 - 8th International Conference of the Chemical Societies of the South-East European Countries - Icosecs 8, Beograd, Srbija T1 - Adsorption of green tea polyphenols onto spent coffee grounds SP - 265 UR - https://hdl.handle.net/21.15107/rcub_technorep_6414 ER -
@conference{ author = "Buntić, Aneta and Pavlović, Marija and Šiler-Marinković, Slavica and Antonović, Dušan and Dimitrijević-Branković, Suzana", year = "2013", abstract = "Some waste materials demonstrated considerable adsorption affinity for phenolic compounds. This property serves two purposes: the recovery and purification of bioactive compounds or fractions from plants, as well as treatment of wastewaters that are leaden by phenolics. This work presented the processing of solutions containing polyphenols by adsorption-desorption studies using spent coffee grounds. As a model system, green tea aqueous extract was prepared. The experiments were performed by batch sorption on a rotary shaker and dynamic column studies. 2 g of spent coffee sample was contacted with 100 ml of green tea extract solution for a predetermined period of time. The results were expressed as the residual total polyphenol concentration of tea extract, measured by the Folin - Ciocalteu method. Batch sorption studies showed a faster removal affinity, compared to column performance. After just 30 min of contact time, the removal percent of tea polyphenols by coffee residues amounted 40%. The desorption studies were also performed, and the results lead to effective purifying and concentrating of tea polyphenols for its further use. As this study investigated the adsorbent capacity of no-cost waste material, such as spent coffee, for phenolic compounds binding, the obtained results were noticeable and offered numerous opportunities for a further experiments in this field.", publisher = "Serbian Chemical Society", journal = "8th International Conference of the Chemical Societies of the South-East European Countries - Icosecs 8, Beograd, Srbija", title = "Adsorption of green tea polyphenols onto spent coffee grounds", pages = "265", url = "https://hdl.handle.net/21.15107/rcub_technorep_6414" }
Buntić, A., Pavlović, M., Šiler-Marinković, S., Antonović, D.,& Dimitrijević-Branković, S.. (2013). Adsorption of green tea polyphenols onto spent coffee grounds. in 8th International Conference of the Chemical Societies of the South-East European Countries - Icosecs 8, Beograd, Srbija Serbian Chemical Society., 265. https://hdl.handle.net/21.15107/rcub_technorep_6414
Buntić A, Pavlović M, Šiler-Marinković S, Antonović D, Dimitrijević-Branković S. Adsorption of green tea polyphenols onto spent coffee grounds. in 8th International Conference of the Chemical Societies of the South-East European Countries - Icosecs 8, Beograd, Srbija. 2013;:265. https://hdl.handle.net/21.15107/rcub_technorep_6414 .
Buntić, Aneta, Pavlović, Marija, Šiler-Marinković, Slavica, Antonović, Dušan, Dimitrijević-Branković, Suzana, "Adsorption of green tea polyphenols onto spent coffee grounds" in 8th International Conference of the Chemical Societies of the South-East European Countries - Icosecs 8, Beograd, Srbija (2013):265, https://hdl.handle.net/21.15107/rcub_technorep_6414 .