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Leyva F, Orjuela A, Kolah A, Lira C, Miller D, Rodríguez G. Isoamyl propionate production by reactive distillation. Sep Purif Technol 2015. [DOI: 10.1016/j.seppur.2015.03.039] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Liu SL, Dong XY, Wei F, Wang X, Lv X, Zhong J, Wu L, Quek SY, Chen H. Ultrasonic pretreatment in lipase-catalyzed synthesis of structured lipids with high 1,3-dioleoyl-2-palmitoylglycerol content. ULTRASONICS SONOCHEMISTRY 2015; 23:100-108. [PMID: 25453210 DOI: 10.1016/j.ultsonch.2014.10.015] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 10/10/2014] [Accepted: 10/11/2014] [Indexed: 06/04/2023]
Abstract
Production of structured lipid 1,3-dioleoyl-2-palmitoylglycerol (OPO), from tripalmitin (PPP) and oleic acid (OA) using lipases and ultrasonic pretreatment was conducted. Factors influencing both the ultrasonic conditions and enzymatic reaction were investigated. Optimum conditions could be attained with 6 min pretreatment time, 50% ultrasonic power, 3 s/9 s (work/pause) cycle of ultrasonic pulse, 1:8 PPP/OA molar ratio, 12% enzyme dosage and 50 °C temperature of. At the optimum conditions, the OPO yield of 51.8% could be achieved in 4h. Studies showed that the OPO content increased to 35.9% in 1h with ultrasonic pretreatment, in comparison to 4h without ultrasonic pretreatment. Reuse of Lipozyme RM IM for 10 cycles under ultrasonic irradiation did not cause essential damage to its lipase activity. Reaction kinetic model fitted well with the proposed Ping-Pong mechanism. The apparent kinetic constant (Vm'/K₂) of ultrasound pretreatment reaction was 2.52 times higher than the conventional mechanical stirring, indicating that ultrasound pretreatment enhanced the substrates affinity to the enzyme. This study confirmed that ultrasonic pretreatment was more efficient in OPO production than conventional mechanical agitation.
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Affiliation(s)
- Si-lei Liu
- Institute of Oil Crops Research, Chinese Academy of Agricultural Sciences, The Key Lab for Biological Sciences of Oil Crops, Ministry of Agriculture - Hubei Key Laboratory of Lipid Chemistry and Nutrition, Wuhan, Hubei 430062, PR China
| | - Xu-yan Dong
- Institute of Oil Crops Research, Chinese Academy of Agricultural Sciences, The Key Lab for Biological Sciences of Oil Crops, Ministry of Agriculture - Hubei Key Laboratory of Lipid Chemistry and Nutrition, Wuhan, Hubei 430062, PR China.
| | - Fang Wei
- Institute of Oil Crops Research, Chinese Academy of Agricultural Sciences, The Key Lab for Biological Sciences of Oil Crops, Ministry of Agriculture - Hubei Key Laboratory of Lipid Chemistry and Nutrition, Wuhan, Hubei 430062, PR China
| | - Xiang Wang
- Institute of Oil Crops Research, Chinese Academy of Agricultural Sciences, The Key Lab for Biological Sciences of Oil Crops, Ministry of Agriculture - Hubei Key Laboratory of Lipid Chemistry and Nutrition, Wuhan, Hubei 430062, PR China
| | - Xin Lv
- Institute of Oil Crops Research, Chinese Academy of Agricultural Sciences, The Key Lab for Biological Sciences of Oil Crops, Ministry of Agriculture - Hubei Key Laboratory of Lipid Chemistry and Nutrition, Wuhan, Hubei 430062, PR China
| | - Juan Zhong
- Institute of Oil Crops Research, Chinese Academy of Agricultural Sciences, The Key Lab for Biological Sciences of Oil Crops, Ministry of Agriculture - Hubei Key Laboratory of Lipid Chemistry and Nutrition, Wuhan, Hubei 430062, PR China
| | - Lin Wu
- Institute of Oil Crops Research, Chinese Academy of Agricultural Sciences, The Key Lab for Biological Sciences of Oil Crops, Ministry of Agriculture - Hubei Key Laboratory of Lipid Chemistry and Nutrition, Wuhan, Hubei 430062, PR China
| | - Siew-young Quek
- School of Chemical Sciences, The University of Auckland, Auckland 1142, New Zealand
| | - Hong Chen
- Institute of Oil Crops Research, Chinese Academy of Agricultural Sciences, The Key Lab for Biological Sciences of Oil Crops, Ministry of Agriculture - Hubei Key Laboratory of Lipid Chemistry and Nutrition, Wuhan, Hubei 430062, PR China.
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Wang J, Wang S, Li Z, Gu S, Wu X, Wu F. Ultrasound irradiation accelerates the lipase-catalyzed synthesis of methyl caffeate in an ionic liquid. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcatb.2014.11.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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