RRC ID 56483
Author Mathiot C, Ponge P, Gallard B, Sassi JF, Delrue F, Le Moigne N.
Title Microalgae starch-based bioplastics: Screening of ten strains and plasticization of unfractionated microalgae by extrusion.
Journal Carbohydr Polym
Abstract Microalgae were considered in this work as a new resource for developing starch-based bioplastics. Ten green microalgae strains were screened at lab-scale for their ability to produce starch. A long run (800 h) two-stage accumulation strategy was designed with successive cultivation in sulfur-replete, then sulfur-depleted medium in autotrophic conditions. Starch content was assessed on cell lysate by enzymatic digestion of extracted starch into glucose. Chlamydomonas reinhardtii 11-32A strain was selected as it displayed a maximum starch-to-biomass ratio of 49%w/w, 460 h after being switched to a sulfur-deprived medium. Small-scale pilot production (30 L tubular photobioreactor) with C. reinhardtii 11-32A yielded sufficient biomass quantity to investigate its direct plasticization with glycerol in a twin-screw extruder. Microstructural characterization confirmed the ability for starch-enriched microalgae to be homogeneously plasticized, and hence the possibility to use microalgae as a new platform for the development of bioplastics.
Volume 208
Pages 142-151
Published 2019-3-15
DOI 10.1016/j.carbpol.2018.12.057
PII S0144-8617(18)31503-0
PMID 30658785
IF 6.044
Times Cited 15
Algae NIES-94 NIES-227 NIES-2152 NIES-2173 NIES-2195 NIES-2280