Batch and continuous extraction of bromelain enzyme by reversed micelles
نویسندگان
چکیده
منابع مشابه
Neural Modeling of Bromelain Extraction by Reversed Micelles
A pulsed-cap microcolumn was used for bromelain extraction from pineapple juice by reversed micelles. The cationic micellar solution used BDBAC as the surfactant, isooctane as the solvent and hexanol as the co-solvent. In order to capture the dynamic behavior and the nonlinearities of the column, the operating conditions were modified in accordance with the central composite design for the expe...
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Proteins can be extracted from an aqueous phase into reversed micelles. This transfer is governed by electrostatic interactions, for protein and surfactant have to bear opposite charges. The presence of high salt concentrations diminishes the attractive interactions and can lead to expulsion of the solubilized proteins. This is used to recover extracted proteins. Larger proteins require a large...
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The optical properties (absorption and fluorescence) of fluorescein sodium were investigated with changing the bulk pH value in aqueous, water-methanol mixed and dodecylammonium propionate reversed micellar solutions. A strong buffer action was found in the reversed micellar solutions. The pK a values for the equilibrium between fluorescein monoand di-anions in the ground and excited singlet st...
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Hydrogenase (hydrogen:ferricytochrome c(3) oxidoreductase, EC 1.12.2.1) from Desulfovibrio vulgaris was encapsulated in reversed micelles with cetyltrimethylammonium bromide as surfactant and a chloroform/octane mixture as solvent. Reducing equivalents for hydrogenase-catalyzed hydrogen production were provided by vectorial photosensitized electron transfer from a donor (thiophenol) in the orga...
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بسیاری از پدیده ها در جهان ما اساساً غیرخطی هستند، و توسط معادلات غیرخطی بیان شده اند. از آنجا که ظهور کامپیوترهای رقمی با عملکرد بالا، حل مسایل خطی را آسان تر می کند. با این حال، به طور کلی به دست آوردن جوابهای دقیق از مسایل غیرخطی دشوار است. روش عددی، به طور کلی محاسبه پیچیده مسایل غیرخطی را اداره می کند. با این حال، دادن نقاط به یک منحنی و به دست آوردن منحنی کامل که اغلب پرهزینه و ...
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ژورنال
عنوان ژورنال: Brazilian Archives of Biology and Technology
سال: 2009
ISSN: 1516-8913
DOI: 10.1590/s1516-89132009000500021