Integrated production of biodegradable plastic from fermentation to synthesis by onsite cell plant system

为了减少生物质中的聚乳酸生产成本，我们提出了一个整合生产组合的增材工艺、分离和提炼工艺和合成工艺的原位细胞工厂系统。这是必要的，以使过程与现场规格一致，即简单、紧凑、安全、高生产率和长寿命。以下几个过程都很清楚：1。发酵过程：新鲜的卡萨瓦根和豆腐液体废物是有用的，当然可以用于基层和媒体。链球菌bovis直接从淀粉而不含Saccharification 2.分离和精炼过程-乳酸盐的esterization Yield受到淀粉集中的影响。用butanol的乳酸盐的转化率在124 ° C时达到了最高水平。合成过程·具有90千道尔顿的分子重量的聚乳酸在没有催化的情况下被发现·具有20千道尔顿的分子重量的聚乳酸在24小时内被直接反应。

To reduce production cost of poly-lactic acid from biomass, we proposed onsite cell plant system of integrated production combined fermentation process, separation and refining process and synthesis process. It is necessary to make the processes to be satisfied with onsite specifications, that is, simple, compact, safety high productivity and long lifetime. The followings were clear for three processes :1. Fermentation process:・Fresh cassava root and tofu liquid waste are useful for substrate and media, respectively.・Streptococcus bovis fermented directly lactic acid from starch without saccharification2. Separation and refining process・Yield of esterification of lactic acid was affected by the starch concentration.・The esterification of lactic acid with butanol have highest conversion at 124℃3. Synthesis process・Poly lactic acid with molecular weight of 90kDalton was obtained without catalysis・Poly lactic acid with molecular weight of 20kDalton was obtained by direct reaction in 24hours.