کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9604314 | 43611 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Cloning and expression of the malolactic gene of Pediococcus damnosus NCFB1832 in Saccharomyces cerevisiae
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Cloning and expression of the malolactic gene of Pediococcus damnosus NCFB1832 in Saccharomyces cerevisiae Cloning and expression of the malolactic gene of Pediococcus damnosus NCFB1832 in Saccharomyces cerevisiae](/preview/png/9604314.png)
چکیده انگلیسی
Wine production is characterized by a primary alcoholic fermentation, conducted by Saccharomyces cerevisiae, followed by a secondary malolactic fermentation (MLF). Although most lactic acid bacteria (LAB) have the ability to metabolize l-malate, only a few species survive the high ethanol and SO2 levels in wine. Wines produced in colder viticultural regions have a lower pH than wines produced in warmer regions. The decarboxylation of l-malate in these wines leads to an increase in pH, more organoleptic complexity and microbiological stability. MLF is, however, difficult to control and problems often occur during filtering of such wines. Pediococcus spp. are known to occur in high pH wines and have strong malolactic activity. However, some pediococci synthesize exocellular polysaccharides, which may lead to abnormal viscosity in wine. In this study, the malolactic gene from Pediococcus damnosus NCFB1832 (mleD) was cloned into S. cerevisiae and co-expressed with the malate permease gene (mae1) of Schizosaccharomyces pombe. Expression of the mleD gene was compared to the expression of two other malolactic genes, mleS from Lactococcus lactis MG1363 and mleA from Oenococcus oeni Lal1. The genetically modified strain of S. cerevisiae decreased the level of l-malate in grape must to less than 0.3 g lâ1 within 3 days. This is the first expression of a malolactic gene from Pediococcus in S. cerevisiae.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Biotechnology - Volume 118, Issue 4, 10 September 2005, Pages 353-362
Journal: Journal of Biotechnology - Volume 118, Issue 4, 10 September 2005, Pages 353-362
نویسندگان
Rolene Bauer, Heinrich Volschenk, Leon M.T. Dicks,