An insight into the solvent effect on the positional selectivity of the immobilized lipase from Burkholderia cepacia in 1,3-diolein synthesis

RSC Advances ◽  
2015 ◽  
Vol 5 (29) ◽  
pp. 23122-23124 ◽  
Author(s):  
Yan-Hong Bi ◽  
Zhao-Yu Wang ◽  
Zhang-Qun Duan ◽  
Xiang-Jie Zhao ◽  
Xiao-Ming Chen ◽  
...  

The diolein yield was higher while the ratio of 1,3-diolein to 1,2-diolein was smaller in solvents with higher log P values.

Polyhedron ◽  
2016 ◽  
Vol 119 ◽  
pp. 445-450 ◽  
Author(s):  
Chengfang Qiao ◽  
Lin Sun ◽  
Sheng Zhang ◽  
Qing Wei ◽  
Chunsheng Zhou ◽  
...  

RSC Advances ◽  
2017 ◽  
Vol 7 (16) ◽  
pp. 9423-9430 ◽  
Author(s):  
Ryohei Kakuchi ◽  
Ryo Ito ◽  
Shuhei Nomura ◽  
Hadi Abroshan ◽  
Kazuaki Ninomiya ◽  
...  

Mechanistic insights into organocatalytic properties of imidazolium-based ionic liquids led to improvements of cellulose modification reactions in ionic liquids.


RSC Advances ◽  
2017 ◽  
Vol 7 (23) ◽  
pp. 13876-13876
Author(s):  
Ryohei Kakuchi ◽  
Ryo Ito ◽  
Shuhei Nomura ◽  
Hadi Abroshan ◽  
Kazuaki Ninomiya ◽  
...  

Correction for ‘A mechanistic insight into the organocatalytic properties of imidazolium-based ionic liquids and a positive co-solvent effect on cellulose modification reactions in an ionic liquid’ by Ryohei Kakuchi et al., RSC Adv., 2017, 7, 9423–9430.


2017 ◽  
Vol 39 (4) ◽  
pp. 385 ◽  
Author(s):  
Nádia Ligianara Dewes Nyari ◽  
Alessandro Rogério Paulazzi ◽  
Clarice Steffens ◽  
Marcelo Mignoni ◽  
Jamile Zeni ◽  
...  

2005 ◽  
Vol 83 (9) ◽  
pp. 1207-1211 ◽  
Author(s):  
Edward M Kosower

Observations made in the course of experiments on pyridinium salts led to important discoveries in physical organic chemistry. The way in which the discoveries were made is likened to art rather than goal-directed "cold logic". We can describe the art of discovery as an effort enhanced by practice and intuition to recognize novelty in a finding and provide productive insight into its nature. We shall present some examples, and describe what happened after finding an unexpected light absorption band, a surprising solvent effect on spectra, and an unexpectedly stable and beautiful small organic radical.Key words: art of discovery, solvent polarity parameter, charge-transfer complex, stable free radical, solvent effect on spectra.


Catalysts ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 914 ◽  
Author(s):  
Yang ◽  
Zhang

Enzymatic production of biodiesel from waste cooking oil (WCO) could contribute to resolving the problems of energy demand and environment pollutions.In the present work, Burkholderia cepacia lipase (BCL) was activated by surfactant imprinting, and subsequently immobilized in magnetic cross-linked enzyme aggregates (mCLEAs) with hydroxyapatite coated magnetic nanoparticles (HAP-coated MNPs). The maximum hyperactivation of BCL mCLEAs was observed in the pretreatment of BCL with 0.1 mM Triton X-100. The optimized Triton-activated BCL mCLEAs was used as a highly active and robust biocatalyst for biodiesel production from WCO, exhibiting significant increase in biodiesel yield and tolerance to methanol. The results indicated that surfactant imprinting integrating mCLEAs could fix BCL in their active (open) form, experiencing a boost in activity and allowing biodiesel production performed in solvent without further addition of water. A maximal biodiesel yield of 98% was achieved under optimized conditions with molar ratio of methanol-to-WCO 7:1 in one-time addition in hexane at 40 °C. Therefore, the present study displays a versatile method for lipase immobilization and shows great practical latency in renewable biodiesel production.


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