Prospects for the Use of Whey for Polyhydroxyalkanoate (PHA) Production

被引:95
作者
Amaro, Tiago M. M. M. [1 ]
Rosa, Davide [1 ]
Comi, Giuseppe [1 ]
Iacumin, Lucilla [1 ]
机构
[1] Univ Udine, Dipartimento Sci Agroalimentari Ambientali & Anim, Udine, Italy
关键词
whey; PHA; PHB; polyhydroxyalkanoate; bioplastics; environment; lactose; FED-BATCH CULTURE; RECOMBINANT ESCHERICHIA-COLI; MIXED MICROBIAL CULTURES; CHEESE WHEY; RALSTONIA-EUTROPHA; WASTE-WATER; POLY(3-HYDROXYBUTYRATE) PRODUCTION; ALCALIGENES-LATUS; ACTIVATED-SLUDGE; OIL;
D O I
10.3389/fmicb.2019.00992
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Plastic production and accumulation have devastating environmental effects, and consequently, the world is in need of environmentally friendly plastic substitutes. In this context, polyhydroxyalkanoates (PHAs) appear to be true alternatives to common plastics because they are biodegradable and biocompatible and can be biologically produced. Despite having comparable characteristics to common plastics, extensive PHA use is still hampered by its high production cost. PHAs are bacterial produced, and one of the major costs associated with their production derives from the carbon source used for bacterial fermentation. Thus, several industrial waste streams have been studied as candidate carbon sources for bacterial PHA production, including whey, an environmental contaminant by-product from the dairy industry. The use of whey for PHA production could transform PHA production into a less costly and more environmentally friendly process. However, the efficient use of whey as a carbon source for PHA production is still hindered by numerous issues, including whey pre-treatments and PHA producing strain choice. In this review, current knowledge on using whey for PHA production were summarized and new ways to overcome the challenges associated with this production process were proposed.
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页数:12
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