利用尼龙制造废料作为工业发酵基质。
Use of a nylon manufacturing waste as an industrial fermentation substrate.
机构信息
Department of Chemical Engineering, McGill University, Montreal, Quebec H3A 2A7, Canada.
出版信息
Appl Environ Microbiol. 1986 Jul;52(1):152-6. doi: 10.1128/aem.52.1.152-156.1986.
Nonvolatile residue (NVR), a waste stream from the manufacture of nylon 6'6', contains mainly small carboxylic acids and alcohols, making it a potential fermentation substrate. Above a concentration of 1.3% (wt/vol), NVR inhibited the growth of all microorganisms tested. The most inhibitory of the major NVR components were the monocarboxylic acids (C(4) to C(6)) and epsilon-caprolactone. The inhibitory effects of NVR could be avoided by using a carbon-limited chemostat. Microorganisms were found that could use all of the major NVR components as carbon and energy sources. One such organism, Pseudomonas cepacia, was grown in a carbon-limited chemostat with a medium feed concentration of 20.5 g of NVR liter. At a dilution rate of 0.14 h the yield of biomass (Y(x/s), where x is biomass produced and s is substrate used) from NVR was 18% (neglecting the water content of NVR). It was concluded that NVR would be a suitable carbon source for certain industrial fermentation processes such as the production of poly-beta-hydroxybutyric acid.
不可挥发残渣（NVR）是尼龙 66 生产过程中的一种废水，主要含有小分子羧酸和醇，因此它是一种潜在的发酵基质。当浓度超过 1.3%（wt/vol）时，NVR 会抑制所有测试微生物的生长。NVR 中主要成分中抑制性最强的是单羧酸（C4 到 C6）和己内酯。采用碳限制恒化器可以避免 NVR 的抑制作用。研究发现，有些微生物可以将 NVR 的主要成分全部用作碳源和能源。其中一种微生物是假单胞菌（Pseudomonas cepacia），它在碳限制恒化器中以培养基进料浓度为 20.5 g/L 的 NVR 进行培养。在稀释率为 0.14 h 的条件下，从 NVR 中获得的生物质产率（Y（x/s），其中 x 是生物质产量，s 是基质用量）为 18%（忽略 NVR 中的水分含量）。因此，可以得出结论，NVR 是某些工业发酵过程（如聚-β-羟基丁酸的生产）的合适碳源。
Zotero 插件