北极新奥尔松地区藻类可培养附生细菌多样性研究

为南南北南地区海洋藻类可培养附生细菌的多样性,利用稀释平板法自2019年7月采集的北南新奥尔松地区的海洋红藻多管藻(Polysiphonia sp.)样品中分离纯化得到60株可培养的藻类附生细菌.16S rRNA基因序列测定分析表明所分离的藻类附生细菌主要隶属于 γ-变形菌纲(39株,65％),其次隶属于放线菌纲(10...     

The extraction of pigments from fresh <Emphasis Type="Italic">Laminaria japonica</Emphasis>

The pigments in Laminariajaponica was extracted with six organic solvents and analyzed in spectroscopy analysis. The extractions conditions were screened by an orthogonal test and the quantity of extracted pigments was determined spectroscopically. The results show that： （1） among the six organic solvents, acetone was the most effective one for the extraction; （2） the optimum extraction conditions were as follows： the ratio of S/M （solvent volume/ material weight） was 30 ml/g; fresh seaweed was extracted 2 times in 2 h; （3） the average total content of pigments was 1.85 mg/g （calculated with dry L. japonica）.