期刊
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
卷 100, 期 4, 页码 1426-1435出版社
WILEY
DOI: 10.1002/jsfa.10140
关键词
diacylglycerols; immobilization; lipase from Thermomyces lanuginosus; organic modification; SBA-15
资金
- National Natural Science Foundation of China [31772000, 31501582]
- Science and Technology Planning Project of Guangdong Province, China [2016A020210134]
BACKGROUND In this study, SBA-15 was functionalized by silane coupling reagents, then lipase from Thermomyces lanuginosus (TLL) was immobilized onto the parent and the organically modified SBA-15 for diacylglycerol (DAG) production through glycerolysis. RESULTS Diacylglycerol content of 54.77 +/- 0.63%, and triacylglycerol (TAG) conversion of 77.75 +/- 1.24%, were obtained from the parent SBA-15 supported TLL-mediated glycerolysis reaction in a solvent-free system. However, poor performance was unexpectedly observed when co-solvents were introduced into the reaction system. After organic modification, the functionalized SBA-15 supported TLL samples all exhibited reasonable performance, producing DAG content over 40 wt% and TAG conversion over 70 wt%. Higher DAG content, up to 59.19 +/- 1.10%, was observed from the phenyl group-modified SBA-15 supported TLL. The operational stability of the immobilized TLL samples in glycerolysis was also improved after organic functionalization. The phenyl group-modified SBA-15 supported TLL showed good reusability in the present glycerolysis reaction, and 95.21 +/- 4.87% of the initial glycerolysis activity remained after five cycles of reuse. CONCLUSION The organic modification of SBA-15 improved the catalytic performance of its supported TLL in glycerolysis, in terms of TAG conversion, DAG content, and reusability. (c) 2019 Society of Chemical Industry
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