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Optimization of heterotrophic cultivation conditions and biochemical components of Scenedesmus bernardii
  
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KeyWord:Scenedesmus bernardii  heterotrophic cultivation  total lipid  carbohydrates  yield
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Author NameAffiliation
GAO Baoyan  
CHEN Xiaomei  
LEI Xueqing，etc  
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Abstract:
      The?heterotrophic?cultivation?conditions?of?Scenedesmus?bernardii?and?the?different?carbon?sources?and?nitrogen?sources?on?its?biochemical?components?were?studied.?The?results?showed?that?the?best?carbon?source?for?Scenedesmus?bernardii?under?heterotrophic?growth?was?glucose,?and?its?optimal?mass?concentration?was?50.0?g/L;?the?best?nitrogen?source?for?Scenedesmus?bernardii?under?heterotrophic?growth?was?yeast?extract,?and?its?optimal?mass?concentration?was?2.7?g/L.?Under?the?optimal?heterotrophic?growth?conditions,?the?maximum?biomass?was?up?to?24.8?g/L.The?carbohydrates?mainly?accumulated?in?the?cell?of?Scenedesmus?bernardii?under?heterotrophic?growth?conditions,?accounting?for?58.2%?of?the?cell?dry?weight,?and?the?highest?yield?was?1.05?g/(L·d);?the?next?was?the?total?lipid,?accounting?for?30.9%?of?the?cell?dry?weight,?and?the?highest?yield?was?0.64?g/(L·d).
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