Synthesis of ethyl cinnamate catalyzed by lipase B from Candida antarctica
Нема приказа
Аутори
Jakovetić, SonjaKnežević-Jugović, Zorica
Jugović, Branimir
Gvozdenović, Milica
Bezbradica, Dejan
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Cinnamic acid and its esters are widespread throughout plant kingdom and therefore, they are common components of our daily diet. Ethyl cinnamate has been approved by FDA for direct addition to food for human consumption. Enzyme synthesis is strongly preferred compared to chemically catalyzed esters synthesis when product quality is a main issue, as is the case for food production. The aim of this study was to examine possibilities for enzyme catalyzed synthesis of cinnamic acid esters and to optimize the synthesis of ethyl cinnamate in terms of selected parameters, including the type of the organic solvent and substrate initial molar ratio. All reactions were performed batchwise under pH and temperature control in vessels containing 5 mL of reaction medium, using cinnamic acid as limiting substrate (0.167 M). Each reaction mixture was supplemented with 75 mg of commercial immobilized lipase B from Candida antarctica, Novozyme 435. The antioxidant activity of obtained ester was measure...d by using chemical and electrochemical techniques. We have proven that ethyl cinnamate can be synthesized using lipase B from Candida antarctica with very high reaction yields in the simple bioreactor system.The best reaction yield (89%) was obtained in isooctane when substrate molar ratio of 1:3 was used. Both, DPPH assay and cyclic voltammetry measurement has shown that ethyl cinnamate has better antioxidant properties than cinnamic acid itself.
Кључне речи:
Antioxidant activity / Cinnamic acid / Cyclic voltammetry / Enzymatic esterification / Ethyl cinnamate / Radical-scavenging activityИзвор:
CEFood 2012 - Proceedings of 6th Central European Congress on Food, 2012, 1110-1114Издавач:
- 6th Central European Congress on Food, CEFood 2012
Институција/група
Tehnološko-metalurški fakultetTY - CONF AU - Jakovetić, Sonja AU - Knežević-Jugović, Zorica AU - Jugović, Branimir AU - Gvozdenović, Milica AU - Bezbradica, Dejan PY - 2012 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1973 AB - Cinnamic acid and its esters are widespread throughout plant kingdom and therefore, they are common components of our daily diet. Ethyl cinnamate has been approved by FDA for direct addition to food for human consumption. Enzyme synthesis is strongly preferred compared to chemically catalyzed esters synthesis when product quality is a main issue, as is the case for food production. The aim of this study was to examine possibilities for enzyme catalyzed synthesis of cinnamic acid esters and to optimize the synthesis of ethyl cinnamate in terms of selected parameters, including the type of the organic solvent and substrate initial molar ratio. All reactions were performed batchwise under pH and temperature control in vessels containing 5 mL of reaction medium, using cinnamic acid as limiting substrate (0.167 M). Each reaction mixture was supplemented with 75 mg of commercial immobilized lipase B from Candida antarctica, Novozyme 435. The antioxidant activity of obtained ester was measured by using chemical and electrochemical techniques. We have proven that ethyl cinnamate can be synthesized using lipase B from Candida antarctica with very high reaction yields in the simple bioreactor system.The best reaction yield (89%) was obtained in isooctane when substrate molar ratio of 1:3 was used. Both, DPPH assay and cyclic voltammetry measurement has shown that ethyl cinnamate has better antioxidant properties than cinnamic acid itself. PB - 6th Central European Congress on Food, CEFood 2012 C3 - CEFood 2012 - Proceedings of 6th Central European Congress on Food T1 - Synthesis of ethyl cinnamate catalyzed by lipase B from Candida antarctica EP - 1114 SP - 1110 UR - https://hdl.handle.net/21.15107/rcub_technorep_1973 ER -
@conference{ author = "Jakovetić, Sonja and Knežević-Jugović, Zorica and Jugović, Branimir and Gvozdenović, Milica and Bezbradica, Dejan", year = "2012", abstract = "Cinnamic acid and its esters are widespread throughout plant kingdom and therefore, they are common components of our daily diet. Ethyl cinnamate has been approved by FDA for direct addition to food for human consumption. Enzyme synthesis is strongly preferred compared to chemically catalyzed esters synthesis when product quality is a main issue, as is the case for food production. The aim of this study was to examine possibilities for enzyme catalyzed synthesis of cinnamic acid esters and to optimize the synthesis of ethyl cinnamate in terms of selected parameters, including the type of the organic solvent and substrate initial molar ratio. All reactions were performed batchwise under pH and temperature control in vessels containing 5 mL of reaction medium, using cinnamic acid as limiting substrate (0.167 M). Each reaction mixture was supplemented with 75 mg of commercial immobilized lipase B from Candida antarctica, Novozyme 435. The antioxidant activity of obtained ester was measured by using chemical and electrochemical techniques. We have proven that ethyl cinnamate can be synthesized using lipase B from Candida antarctica with very high reaction yields in the simple bioreactor system.The best reaction yield (89%) was obtained in isooctane when substrate molar ratio of 1:3 was used. Both, DPPH assay and cyclic voltammetry measurement has shown that ethyl cinnamate has better antioxidant properties than cinnamic acid itself.", publisher = "6th Central European Congress on Food, CEFood 2012", journal = "CEFood 2012 - Proceedings of 6th Central European Congress on Food", title = "Synthesis of ethyl cinnamate catalyzed by lipase B from Candida antarctica", pages = "1114-1110", url = "https://hdl.handle.net/21.15107/rcub_technorep_1973" }
Jakovetić, S., Knežević-Jugović, Z., Jugović, B., Gvozdenović, M.,& Bezbradica, D.. (2012). Synthesis of ethyl cinnamate catalyzed by lipase B from Candida antarctica. in CEFood 2012 - Proceedings of 6th Central European Congress on Food 6th Central European Congress on Food, CEFood 2012., 1110-1114. https://hdl.handle.net/21.15107/rcub_technorep_1973
Jakovetić S, Knežević-Jugović Z, Jugović B, Gvozdenović M, Bezbradica D. Synthesis of ethyl cinnamate catalyzed by lipase B from Candida antarctica. in CEFood 2012 - Proceedings of 6th Central European Congress on Food. 2012;:1110-1114. https://hdl.handle.net/21.15107/rcub_technorep_1973 .
Jakovetić, Sonja, Knežević-Jugović, Zorica, Jugović, Branimir, Gvozdenović, Milica, Bezbradica, Dejan, "Synthesis of ethyl cinnamate catalyzed by lipase B from Candida antarctica" in CEFood 2012 - Proceedings of 6th Central European Congress on Food (2012):1110-1114, https://hdl.handle.net/21.15107/rcub_technorep_1973 .