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Carica papaya lipase: a versatile enantioselectivity biocatalyst - Chen, Jim / Tsai, Shau-Wei
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Chen, Jim / Tsai, Shau-Wei:

Carica papaya lipase: a versatile enantioselectivity biocatalyst - Taschenbuch

ISBN: 3844317309

Gebundene Ausgabe, ID: 10396860

Applications of medium engineering and substrate engineering to improving Carica papaya lipase- catalyzed kinetic resolution of (R,S)-naproxen esters - Buch, gebundene Ausgabe, 160 S., Beilagen: Paperback, Erschienen: 2011 LAP Lambert Acad. Publ. 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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Carica papaya lipase: a versatile enantioselectivity biocatalyst - Jim Chen
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Jim Chen:

Carica papaya lipase: a versatile enantioselectivity biocatalyst - Taschenbuch

2011, ISBN: 3844317309

ID: 10409408962

[EAN: 9783844317305], Neubuch, [PU: Lap Lambert Acad. Publ. Mrz 2011], This item is printed on demand - Print on Demand Titel. - 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. 160 pp. Englisch

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Carica Papaya Lipase - Jim Chen, Shau-Wei Tsai
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Jim Chen, Shau-Wei Tsai:
Carica Papaya Lipase - gebrauchtes Buch

ISBN: 9783844317305

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Jim Chen, Shau-Wei Tsai, Paperback, English-language edition, Pub by AV Akademikerverlag GmbH & Co. KG. Books, Technology~~Chemical & Biochemical, Carica-papaya-lipase~~Jim-Chen, 999999999, Carica Papaya Lipase, Jim Chen, Shau-Wei Tsai, 3844317309, AV Akademikerverlag GmbH & Co. KG., , , , , AV Akademikerverlag GmbH & Co. KG.

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Carica papaya lipase: a versatile enantioselectivity biocatalyst - Chen, Jim / Tsai, Shau-Wei
Vergriffenes Buch, derzeit bei uns nicht verfügbar.
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Chen, Jim / Tsai, Shau-Wei:
Carica papaya lipase: a versatile enantioselectivity biocatalyst - Taschenbuch

2011, ISBN: 3844317309

Gebundene Ausgabe, ID: 10396860

Applications of medium engineering and substrate engineering to improving Carica papaya lipase- catalyzed kinetic resolution of (R,S)-naproxen esters - Buch, gebundene Ausgabe, 160 S., Beilagen: Paperback, Erschienen: 2011 LAP Lambert Acad. Publ.

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Carica papaya lipase: a versatile enantioselectivity biocatalyst - Chen, Jim; Tsai, Shau-Wei
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Chen, Jim; Tsai, Shau-Wei:
Carica papaya lipase: a versatile enantioselectivity biocatalyst - Taschenbuch

2011, ISBN: 3844317309

ID: 13788739476

[EAN: 9783844317305], Neubuch, [PU: LAP Lambert Academic Publishing], This item is printed on demand for shipment within 3 working days.

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Carica papaya lipase: a versatile enantioselectivity biocatalyst
Autor:

Chen, Jim / Tsai, Shau-Wei

Titel:

Carica papaya lipase: a versatile enantioselectivity biocatalyst

ISBN-Nummer:

9783844317305

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.

Detailangaben zum Buch - Carica papaya lipase: a versatile enantioselectivity biocatalyst


EAN (ISBN-13): 9783844317305
ISBN (ISBN-10): 3844317309
Gebundene Ausgabe
Taschenbuch
Erscheinungsjahr: 2011
Herausgeber: AV Akademikerverlag GmbH & Co. KG.

Buch in der Datenbank seit 17.07.2009 05:27:40
Buch zuletzt gefunden am 18.01.2015 22:14:08
ISBN/EAN: 9783844317305

ISBN - alternative Schreibweisen:
3-8443-1730-9, 978-3-8443-1730-5

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