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Immobilization of planktonic algal spores by inkjet printing
Lee, H.-R.; Jung, S.M.; Yoon, S.; Yoon, W.H.; Park, T.H.; Kim, S.; Shin, H.W.; Hwang, D.S.; Jung, S. (2019). Immobilization of planktonic algal spores by inkjet printing. NPG Scientific Reports 9(1): 7 pp. https://dx.doi.org/10.1038/s41598-019-48776-z
In: Scientific Reports (Nature Publishing Group). Nature Publishing Group: London. ISSN 2045-2322; e-ISSN 2045-2322
Peer reviewed article  
Beschikbaar in  Auteurs 
Auteurs  Top 
  • Lee, H.-R.
  • Jung, S.M.
  • Yoon, S.
  • Yoon, W.H.
  • Park, T.H.
  • Kim, S.
  • Shin, H.W.
  • Hwang, D.S.
  • Jung, S.
Abstract
    The algal cell immobilization is a commonly used technique for treatment of waste water, production of useful metabolites and management of stock culture. However, control over the size of immobilized droplets, the population of microbes, and production rate in current techniques need to be improved. Here, we use drop-on-demand inkjet printing to immobilize spores of the alga Ecklonia cava within alginate microparticles for the first time. Microparticles with immobilized spores were generated by printing alginate-spore suspensions into a calcium chloride solution. We demonstrate that the inkjet technique can control the number of spores in an ejected droplet in the range of 0.23 to 1.87 by varying spore densities in bioink. After the printing-based spore encapsulation, we observe initial sprouting and continuous growth of thallus until 45 days of culture. Our study suggest that inkjet printing has a great potential to immobilize algae, and that the ability to control the number of encapsulated spores and their microenvironments can facilitate research into microscopic interactions of encapsulated spores.
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