scholarly journals Acidolysis reaction by a thermostable lipase from Humicola lanuginosa.

1988 ◽  
Vol 52 (11) ◽  
pp. 2923-2925
Author(s):  
IBRAHIM Che Omar ◽  
Naomichi NISHIO ◽  
Shiro NAGAI
Keyword(s):  
Thermostable Lipase ◽  
Humicola Lanuginosa ◽  
Acidolysis Reaction

scholarly journals Hydrolysis of triglycerides by immobilized thermostable lipase from Humicola lanuginosa.

1988 ◽  
Vol 52 (1) ◽  
pp. 99-105 ◽  
Author(s):  
IBRAHIM Che Omar ◽  
Hisashi SAEKI ◽  
Naomichi NISHIO ◽  
Shiro NAGAI
Keyword(s):  
Thermostable Lipase ◽  
Humicola Lanuginosa ◽  
Hydrolysis Of

scholarly journals Purification and some properties of a thermostable lipase from Humicola lanuginosa No.3.

1987 ◽  
Vol 51 (1) ◽  
pp. 37-45 ◽  
Author(s):  
IBRAHIM Che Omar ◽  
Mitsunori HAYASHI ◽  
Shiro NAGAI
Keyword(s):  
Thermostable Lipase ◽  
Humicola Lanuginosa

scholarly journals Acidolysis Reaction by a Thermostable Lipase fromHumicola lanuginosa

1988 ◽  
Vol 52 (11) ◽  
pp. 2923-2925
Author(s):  
Ibrahim Che Omar ◽  
Naomichi Nishio ◽  
Shiro Nagai
Keyword(s):  
Thermostable Lipase ◽  
Acidolysis Reaction

scholarly journals Revisiting the mechanism of β-O-4 bond cleavage during acidolysis of lignin VII: acidolyses of non-phenolic C6-C2-type model compounds using HBr, HCl and H2SO4, and a proposal on the characteristic action of Br− and Cl−

2020 ◽  
Vol 66 (1) ◽  
Author(s):  
Qiaoqiao Ye ◽  
Tomoya Yokoyama
Keyword(s):  
Model Compound ◽  
Bond Cleavage ◽  
Type Model ◽  
Enol Ether ◽  
Lignin Model Compound ◽  
Benzyl Cation ◽  
Acid Type ◽  
Unstable Compound ◽  
Lignin Model ◽  
Acidolysis Reaction

AbstractA non-phenolic C6-C2-type lignin model compound with the β-O-4 bond, 2-(2-methoxyphenoxy)-1-(3,4-dimethoxyphenyl)ethanol (I), was acidolyzed in aqueous 82% 1,4-dioxane containing HBr, HCl, or H2SO4 with a concentration of 0.2 mol/L at 85 ℃ to examine the differences between these acidolyses. Compound I primarily converted to an enol ether compound, 1-(2-methoxyphenoxy)-2-(3,4-dimethoxyphenyl)ethene (II), via the benzyl cation followed by acidolytic β-O-4 bond cleavage regardless of the acid-type, although the disappearance rates of compound I were remarkably different (HBr > HCl >> H2SO4). Acidolyses of compound II using these acids under the same conditions showed a similar tendency, but the rate differences were much smaller than in the acidolyses of compound I. Acidolyses of the α-methyl-etherified derivative of compound I (I-α-OMe) using these acids under the same conditions suggested that the formation rates of the benzyl cation from compound I-α-OMe (also from compound I) are not largely different between the acidolyses using these acids, but those of compound II from the benzyl cation are remarkably different. Acidolysis of the α-bromo-substituting derivative of compound I (I-α-Br) using HBr under the same conditions showed a characteristic action of Br¯ in the acidolysis. Br¯ adds to the benzyl cation generated from compound I or I-α-OMe to afford unstable compound I-α-Br, resulting in acceleration of the formation of compound II and of the whole acidolysis reaction.

A thermostable lipase produced by a newly isolated Geotrichum-like strain, R59

2004 ◽  
Vol 31 (4) ◽  
pp. 177-182 ◽  
Author(s):  
G. Ginalska ◽  
R. Bancerz ◽  
T. Korniłłowicz-Kowalska
Keyword(s):  
Thermostable Lipase

scholarly journals A Newly Isolated Thermostable Lipase from Bacillus sp.

2011 ◽  
Vol 12 (5) ◽  
pp. 2917-2934 ◽  
Author(s):  
Fairolniza Mohd Shariff ◽  
Raja Noor Zaliha Raja Abd. Rahman ◽  
Mahiran Basri ◽  
Abu Bakar Salleh
Keyword(s):  
Bacillus Sp ◽  
Thermostable Lipase
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