کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7067026 | 1459882 | 2018 | 29 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Nuclease expression in efficient polyhydroxyalkanoates-producing bacteria could yield cost reduction during downstream processing
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Nuclease expression in efficient polyhydroxyalkanoates-producing bacteria could yield cost reduction during downstream processing Nuclease expression in efficient polyhydroxyalkanoates-producing bacteria could yield cost reduction during downstream processing](/preview/png/7067026.png)
چکیده انگلیسی
Industrial manufacturing of polyhydroxyalkanoates (PHAs) requires purification of PHAs granules from high-cell-density cultures. Cells are broken by homogenization and PHAs granules are cleansed and treated to obtain PHAs latexes. However, cell lysis releases large amounts of DNA which results in an increasing viscosity of the medium, hampering the following downstream steps. Drop in viscosity is generally achieved by costly procedures such as heat treatment or the supplementation of hypochlorite and commercially available nucleases. Searching for a cost-effective solution to this issue, a nuclease gene from Staphylococcus aureus has been integrated into two efficient PHAs-producing bacteria: Cupriavidus necator DSM 545 and Delftia acidovorans DSM 39. Staphylococcal nuclease has been proficiently expressed in both microbial hosts without affecting PHAs production. Moreover, the viscosity of the lysates of recombinant C. necator cells was greatly reduced, indicating that the engineered strain is expected to yield large reduction cost in PHAs downstream processing.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 261, August 2018, Pages 176-181
Journal: Bioresource Technology - Volume 261, August 2018, Pages 176-181
نویسندگان
Jesús E. RodrÃguez Gamero, Lorenzo Favaro, Valentino Pizzocchero, Giovanna Lomolino, Marina Basaglia, Sergio Casella,