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Lipase-Catalyzed Synthesis of Sn-2 Palmitate: A Review Review

Wei Wei, Cong Sun, Xiaosan Wang, Qingzhe Jin, Xuebing Xu, Casimir C. Akoh, Xingguo Wang

Engineering 2020, Volume 6, Issue 4,   Pages 406-414 doi: 10.1016/j.eng.2020.02.008

Abstract:

Human milk fat (HMF) is an important source of nutrients and energy for infants.HMF is highly enriched in palmitic acid (PA) at the sn-2 position of the glycerol backbone (Sn-2 palmitate (mainly 1,3-dioleoyl-2-palmitoyl-glycerol) is one of the structured TAGs thatIn this review, the development of the lipase-catalyzed synthesis of sn-2 palmitate over theProspects for the lipase-catalyzed synthesis of sn-2 palmitate are discussed.

Keywords： Structured triacylglycerols，Palmitic acid，Human milk fat substitutes，Lipase-catalyzed reaction，Sn<    

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Study of ultrasound-promoted, lipase-catalyzed synthesis of fructose ester

Kai ZHU, Hui LIU, Pingfang HAN, Ping WEI,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 3,   Pages 367-371 doi: 10.1007/s11705-009-0312-4

Abstract: Here we describe the experimental study of the effect of ultrasounds of different intensity on the lipase-catalyzedimportant role in our lipase-catalyzed reaction.It decreased reaction time as compared to a reaction without ultrasound that resulted in the same yield, increased reaction rate, and enhanced the amount of fructose ester produced.was favorable for the reaction.
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High Sn-2 Docosahexaenoic Acid Lipids for Brain Benefits, and Their Enzymatic Syntheses: A Review Review

Jun Jin, Qingzhe Jin, Xingguo Wang, Casimir C. Akoh

Engineering 2020, Volume 6, Issue 4,   Pages 424-431 doi: 10.1016/j.eng.2020.02.009

Abstract: and maintenance of central neural functions are highly correlated with the amount of docosahexaenoic acidspan style="font-family:"Times New Roman","serif"">ω-3 fatty acidTo provide an understanding of the integrated beneficial effects of DHA on the human brain, this reviewintroduces the positional difference (sn-2 and sn-1,3 positions) of DHA on a glycerolTo achieve high sn-2 DHA in diets, it is suggested that sn-2 DHA lipids be enzymatically

Keywords： Docosahexaenoic acid， Sn-2 docosahexaenoic acid，Monoacylglycerol，Brain，Gut-brain axis，Structured lipid    

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Octane compositions in sulfuric acid catalyzed isobutane/butene alkylation products: experimental and

Lina Liang, Youzhi Liu, Weizhou Jiao, Qiaoling Zhang, Chao Zhang

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 5,   Pages 1229-1242 doi: 10.1007/s11705-020-2030-x

Abstract: Based on a classic carbenium ion mechanism, the carbocation transition states in concentrated sulfuric acidcatalyzed alkylation were investigated using quantum-chemical simulations and predicted the concentration

Keywords： sulfuric acid catalyzed alkylation     carbocation reaction     transition state     octane compositions    

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Perfluoroalkane acids in human milk under the global monitoring plan of the Stockholm Convention on Persistent

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 10, doi: 10.1007/s11783-022-1541-8

Abstract:

● Perfluorooctanesulfonic acid and perfluorooctanoic acid highest inhuman milk.

Keywords： Human biomonitoring     Human breast milk     LC-MS/MS analysis     Lifestyle parameters    

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Regioselective acylation of pyridoxine catalyzed by immobilized lipase in ionic liquid

BAI Shu, REN Mengyuan, WANG Lele, SUN Yan

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 3,   Pages 301-307 doi: 10.1007/s11705-008-0060-x

Abstract: The regioselective acylation of pyridoxine catalyzed by immobilized lipase () in 1-butyl-3-methylimidazoliumAmong the tested parameters, water activity () and temperature have profound effects on the reactionFor the reaction in [BMIM]PF, higher temperature (50°C–55°C) and lower (<0.01) are preferable conditionsa different rate-temperature profile and a lower velocity at lower temperature in [BMIM]PF-mediated reactionMoreover, consecutive batch reactions for enzyme reuse also show that lipase exhibited a much higher

Keywords： ACN     stability     1-butyl-3-methylimidazolium hexafluorophosphate     different rate-temperature     alternative    

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One-pot three-component Mannich reaction catalyzed by sucrose char sulfonic acid

Qiong XU, Zhigao YANG, Dulin YIN, Jihui WANG

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 2,   Pages 201-205 doi: 10.1007/s11705-009-0052-5

Abstract: Sucrose char sulfonic acid efficiently catalyzed the one-pot three-component Mannich reaction of ketonesThis reaction can be performed under mild reaction conditions with clean reaction profiles and a simple

Keywords： One–pot synthesis     b-amino ketone     char sulfonic acid     2-acetylpyrazine     catalysis    

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Expression of recombinant human butyrylcholinesterase in the milk of transgenic mice

Dan LU,Shengzhe SHANG,Shen LIU,Ying WU,Fangfang WU,Tan TAN,Qiuyan LI,Yunping DAI,Xiaoxiang HU,Yaofeng ZHAO,Ning LI

Frontiers of Agricultural Science and Engineering 2014, Volume 1, Issue 3,   Pages 179-184 doi: 10.15302/J-FASE-2014020

Abstract: Due to the limited yield of human BCHE (hBCHE) when purifying from human plasma, it is necessary to findOne potential method is to produce transgenic livestock that make modified milk containing high concentrationIn this study, we cloned the gene into a human lactoferrin (hLF) bacterial artificial chromosome (BACexpressed efficiently in the mammary gland of the transgenic mice and the concentration of rhBCHE in the milk

Keywords： recombinant human butyrylcholinesterase (rhBCHE)     human lactoferrin bacterial artificial chromosome (hLFBAC)     transgenic mice     milk    

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Continuous reaction performances of benzene alkylation with long chain olefins catalyzed by ionic liquid

QIAO Congzhen, LI Chengyue

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 1,   Pages 69-73 doi: 10.1007/s11705-008-0014-3

Abstract: Based on a compulsive mixing-reacting-separating-recycling small experimental setup,the continuous reactionperformances of benzene alkylation with long chain olefins catalyzed by [BMIM]Cl-AlCl ionic liquid wereEven under the relatively hypecritical reaction conditions, the single pass conversion of pure 1-dodecene

Keywords： stability     different     hypecritical     compulsive mixing-reacting-separating-recycling     non-benzene    

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Silver-catalyzed bioleaching for raw low-grade copper sulphide ores

Tianlong DENG, Yafei GUO, Mengxia LIAO, Dongchan LI

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 3,   Pages 250-254 doi: 10.1007/s11705-009-0049-0

Abstract: The overall acid consumption was 4.3 kg sulphuric acid per kg of dissolved copper and was linearly related

Keywords： green process     biohydrometallurgy     bioleaching     reaction kinetics     sulphide ores    

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Visbreaking of heavy petroleum oil catalyzed by SO/ZrO solid super-acid doped with Ni or Sn

JING Ping, LI Qingbiao, HAN Mei, SUN Daohua, JIA Lishan, FANG Weiping

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 2,   Pages 186-190 doi: 10.1007/s11705-008-0035-y

Abstract: SO/ZrO solid super-acid catalysts (SZ) doped with Ni or Sn (Ni/SZ, Sn/SZ) were prepared for catalyticpetroleum oil and the viscosity was reduced from 0.319 Pa·s to 0.135 Pa·s for Ni/SZ and 0.163 Pa·s for (Sn

Keywords： thermolysis     Shengli     asphaltene     SO/ZrO     presence    

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Construction of a universal recombinant expression vector that regulates the expression of human lysozymein milk

Shen LIU, Shengzhe SHANG, Xuezhen YANG, Huihua ZHANG, Dan LU, Ning LI

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 3,   Pages 382-389 doi: 10.15302/J-FASE-2018211

Abstract: A key component in the technology is the construction of an efficient milk expression vector.>) was modified twice by homologous recombination to produce a universal expression vector, and the humanfertilized mouse embryos, to successfully generate two transgenic mouse lines that expressed recombinant humanlysozyme (rhLZ) in milk.that the resulting vector regulates the expression of hLZ in milk.

Keywords： BAC recombinant methods     gene expression     human lysozyme     transgenic mice     milk expression vector    

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Application of transesterification for the production of biodiesel

Zhang Huaiyuan,Song Yuanda

Strategic Study of CAE 2010, Volume 12, Issue 1,   Pages 24-29

Abstract: Several transesterafication methods can be used to produce biodiesel, such as, homogeneous acid/basecatalysis, lipase-catalyzed reaction, supercritical method and solid acid/base catalysis.to purify and with significant pollution; Lipase-catalyzed reaction can take place in mild conditionsBut Lipase is too expensive which blocks its commercial use.Solid acid/base catalyst, which can be recycled, has less causticity and without pollution.

Keywords： biodiesel     transesterification     homogeneous acid/base     solid acid/base     lipase     supercritical method    

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Asystematic review of structured sparse learning Review

Lin-bo QIAO, Bo-feng ZHANG, Jin-shu SU, Xi-cheng LU

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 4,   Pages 445-463 doi: 10.1631/FITEE.1601489

Abstract: Structured sparse learning encodes the structural information of the variables and has been quite successfulWith various types of structures discovered, sorts of structured regularizations have been proposed.In this article, we present a systematic review of structured sparse learning including ideas, formulationsimplementations, and compare the computational complexity of typical optimization methods to solve structuredIn experiments, we present applications in unsupervised learning, for structured signal recovery and

Keywords： Sparse learning     Structured sparse learning     Structured regularization    

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Biodiesel production by the transesterification of cottonseed oil by solid acid catalysts

CHEN He, PENG Baoxiang, WANG Dezheng, WANG Jinfu

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 1,   Pages 11-15 doi: 10.1007/s11705-007-0003-y

Abstract: yield of methyl esters was over 90% under the conditions of 230°C, methanol/oil mole ratio of 12:1, reactionThe solid acid catalysts showed more better adaptability than solid base catalysts when the oil has highIR spectral analysis of absorbed pyridine on the samples showed that there were Lewis and BrØnsted acid

Keywords： BrØnsted     reaction     presence     cottonseed     biodiesel    

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Title Author Date Type Operation

Lipase-Catalyzed Synthesis of Sn-2 Palmitate: A Review

Wei Wei, Cong Sun, Xiaosan Wang, Qingzhe Jin, Xuebing Xu, Casimir C. Akoh, Xingguo Wang

Journal Article

Study of ultrasound-promoted, lipase-catalyzed synthesis of fructose ester

Kai ZHU, Hui LIU, Pingfang HAN, Ping WEI,

Journal Article

High Sn-2 Docosahexaenoic Acid Lipids for Brain Benefits, and Their Enzymatic Syntheses: A Review

Jun Jin, Qingzhe Jin, Xingguo Wang, Casimir C. Akoh

Journal Article

Octane compositions in sulfuric acid catalyzed isobutane/butene alkylation products: experimental and

Lina Liang, Youzhi Liu, Weizhou Jiao, Qiaoling Zhang, Chao Zhang

Journal Article

Perfluoroalkane acids in human milk under the global monitoring plan of the Stockholm Convention on Persistent

Journal Article

Regioselective acylation of pyridoxine catalyzed by immobilized lipase in ionic liquid

BAI Shu, REN Mengyuan, WANG Lele, SUN Yan

Journal Article

One-pot three-component Mannich reaction catalyzed by sucrose char sulfonic acid

Qiong XU, Zhigao YANG, Dulin YIN, Jihui WANG

Journal Article

Expression of recombinant human butyrylcholinesterase in the milk of transgenic mice

Dan LU,Shengzhe SHANG,Shen LIU,Ying WU,Fangfang WU,Tan TAN,Qiuyan LI,Yunping DAI,Xiaoxiang HU,Yaofeng ZHAO,Ning LI

Journal Article

Continuous reaction performances of benzene alkylation with long chain olefins catalyzed by ionic liquid

QIAO Congzhen, LI Chengyue

Journal Article

Silver-catalyzed bioleaching for raw low-grade copper sulphide ores

Tianlong DENG, Yafei GUO, Mengxia LIAO, Dongchan LI

Journal Article

Visbreaking of heavy petroleum oil catalyzed by SO/ZrO solid super-acid doped with Ni or Sn

JING Ping, LI Qingbiao, HAN Mei, SUN Daohua, JIA Lishan, FANG Weiping

Journal Article

Construction of a universal recombinant expression vector that regulates the expression of human lysozymein milk

Shen LIU, Shengzhe SHANG, Xuezhen YANG, Huihua ZHANG, Dan LU, Ning LI

Journal Article

Application of transesterification for the production of biodiesel

Zhang Huaiyuan,Song Yuanda

Journal Article

Asystematic review of structured sparse learning

Lin-bo QIAO, Bo-feng ZHANG, Jin-shu SU, Xi-cheng LU

Journal Article

Biodiesel production by the transesterification of cottonseed oil by solid acid catalysts

CHEN He, PENG Baoxiang, WANG Dezheng, WANG Jinfu

Journal Article