𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Comparison of the enzymatic activity of commercial and semipurified lipase of Candida cylindracea in the hydrolysis of the esters of (R,S) 2-aryl propionic acids.

✍ Scribed by María J. Hernáiz; José M. Sanchez-Montero; José V. Sinisterra


Publisher
Elsevier Science
Year
1994
Tongue
French
Weight
664 KB
Volume
50
Category
Article
ISSN
0040-4020

No coin nor oath required. For personal study only.

✦ Synopsis


A semipuriied lipaw of Candida cylindmdea (2.S) -easily obtainedfrom commercial crude lipase (LC)-is used in rhe enantiosekctive hydrolysis of (R,S) 2-arylpropionates. Ihe semipurification treatmen diminishu the lipase adwhy more than the &erase activity. i'he aaiiition of lactose (24 h) increases both activitks. LS is more active than LC -at the same amount of protein-in the hydrolysis of (R,S) Z-a19 propionates. lhis semipuriJcation showed a remarkabk bnprovement in yieki in the enamioespecific hydrolysis of these esters.


📜 SIMILAR VOLUMES


Influence of the nature of modifier in t
✍ M. J. Hernáiz; J. M. Sánchez-Montero; J. V. Sinisterra 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 196 KB 👁 2 views

Semipurified lipase of Candida rugosa (CRSL) was subjected to chemical modification, and the activities of the modified lipase, in hydrolysis and esterification reactions, were examined. The esterification reactions were carried out in the absence and presence of isooctane. When the enzyme was modif

Enzymatic kinetic resolution of (±)-4-ac
✍ Antonio Cipiciani; Francesco Fringuelli; Vittorio Mancini; Oriana Piermatti; Ann 📂 Article 📅 1997 🏛 Elsevier Science 🌐 French ⚖ 305 KB

The enzymatic kinetic resolution of (-+)-4-acetoxy122]paracyclophane by Candida cylindracea lipase was investigated in water and in a two-phase aqueous organic system. The (+)-(R)-4-hydroxy-and (+)-(S)-4-acetoxyl2,2l-paracyclophanes were isolated in excellent yields and high enantiomeric excesses. T

Enantioselectivity and diastereoselectiv
✍ Yiannis S. Angelis; Ioulia Smonou 📂 Article 📅 1998 🏛 Elsevier Science 🌐 French ⚖ 237 KB

Comparative studies of enantioselectivities and diastereoselectivities in the hydrolysis reactions of acylals and 50:50 threo-erythro mixtures of the esters of related secondary alcohols with Candida rugosa lipase gave significant information about the reactivity order in the enzymatic hydrolysis of

Influence of water activity on the enant
✍ Pierre Pepin; Robert Lortie 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 75 KB 👁 2 views

The lipase-catalyzed enantioselective esterification of ibuprofen has been studied in a media, composed only of substrates. When racemic ibuprofen is used, the alcohol-chain length affects the esterification rates of individual enantiomers, but it does not affect the enantioselectivity. Water activi