Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang 330013, PR China.
State Key Laboratory of Food Science and MOE Biomass Energy Center, Nangchang University, Nanchang 330013, PR China.
Bioresour Technol. 2019 Jun;282:325-330. doi: 10.1016/j.biortech.2019.03.033. Epub 2019 Mar 9.
Conventional flocculants, commonly used to improve harvesting efficiency, can contaminate the broth and cause microalgae not suitable for food or feed production. In the present study, Pleurotus ostreatus, an edible fungal strain, was developed to improve the harvesting efficiency of microalgae. The results show that Pleurotus ostreatus pellets cultured under 100 rpm agitation resulted in higher harvesting efficiency than pellets cultured under 0 rpm and 150 rpm agitation. Lower pH of the Chlorella sp. suspension resulted in higher harvesting efficiency. The maximum recovery efficiency reached 64.86% in 150 mins. The above process could be used to achieve low cost, flocculant-free harvesting of microalgae as feedstock for feed or food production.
传统的絮凝剂常用于提高收获效率，但会污染培养液，导致微藻不适合用于食品或饲料生产。在本研究中，开发了一种可食用的真菌菌株——糙皮侧耳（Pleurotus ostreatus）来提高微藻的收获效率。结果表明，在 100rpm 搅拌下培养的糙皮侧耳颗粒比在 0rpm 和 150rpm 搅拌下培养的颗粒具有更高的收获效率。较低的小球藻悬浮液 pH 值导致更高的收获效率。在 150 分钟内，最大回收率达到 64.86%。该工艺可用于实现低成本、无絮凝剂的微藻收获，作为饲料或食品生产的原料。
