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Carica papaya lipase: a versatile enantioselectivity biocatalyst - Jim Chen/ Shau-Wei Tsai
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Carica papaya lipase: a versatile enantioselectivity biocatalyst - Livres de poche

ISBN: 9783844317305

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*Carica papaya lipase: a versatile enantioselectivity biocatalyst* - Applications of medium engineering and substrate engineering to improving Carica papaya lipase- catalyzed kinetic reso… Plus…

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Carica Papaya Lipase a Versatile Enantioselectivity Biocatalyst Applications of Medium Engineering and Substrate Engineering to Improving Carica Kinetic Resolution of R, Snaproxen Esters - Livres de poche

2003, ISBN: 9783844317305

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Chen, Jim:
Carica Papaya Lipase: a Versatile Enantioselectivity Biocatalyst - Livres de poche

2011

ISBN: 9783844317305

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Carica papaya lipase: a versatile enantioselectivity biocatalyst - Livres de poche

2011, ISBN: 3844317309

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Chen, Jim, and Tsai, Shau-Wei:
Carica papaya lipase: a versatile enantioselectivity biocatalyst - Livres de poche

2011, ISBN: 9783844317305

Trade paperback, New., Trade paperback (US). Glued binding. 160 p., Saarbrucken, [PU: LAP Lambert Academic Publishing]

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Carica papaya lipase: a versatile enantioselectivity biocatalyst

The papaya lipase stored in the crude papain from spay-dried latex of Carica papaya has been discovered as a versatile enantioselectivity biocatalyst to obtain chiral acids by using hydrolytic resolution of their racemic esters. With adopting the enzyme screening, purification, medium engineering and substrate engineering tactics can effectively improve the ability of lipase- catalyzed hydrolysis of (R,S)-naproxen ester. By employing partially purified lipase or an appropriate organo-soluble base (ex: Triethylamine) addition in water-saturated isooctane, both have superior enhancement of lipase activity or enantioselectivity. In addition, it was also found that initial rate enhancement for (S)-ester displayed as increasing the inductive parameter (electron-withdraw capability), therefore it further implies the acylaction step must be the rate- limiting step during enzyme-catalyzed process. Besides, a novel means of applying substrate- assisted catalysis demonstrated the proton shuttle device acts as an effective tool for improving the lipase activity by forming an extra intra-molecular hydrogen bond (11.5~11.9 KJ/mol) in the transition state.

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EAN (ISBN-13): 9783844317305
ISBN (ISBN-10): 3844317309
Version reliée
Livre de poche
Date de parution: 2011
Editeur: LAP LAMBERT Academic Publishing

Livre dans la base de données depuis 2009-07-17T05:27:40+02:00 (Paris)
Page de détail modifiée en dernier sur 2023-07-12T11:49:29+02:00 (Paris)
ISBN/EAN: 3844317309

ISBN - Autres types d'écriture:
3-8443-1730-9, 978-3-8443-1730-5
Autres types d'écriture et termes associés:
Auteur du livre: tsai, wei wei
Titre du livre: papaya, wei


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