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Pyrolysis of Arundo donax L. to produce pyrolytic vinegar and its effect on the growth of dinoflagellate Karenia brevis TEXT SIZE: A A A

Harmful algal blooms (HABs) have become global environmental issues, and the demand for alternative algaecides is urgent. Pyrolytic vinegars (PVs) were pyrolyzed from giant reed at 300-600 degrees C to investigate the underlying mechanisms of their inhibitory effect on the red tide dinoflagellate Karenia brevis by sub-chronic toxicity experiments. The major components of PVs were acetic acid, phenols, aldehyde, ketone, and esters. The 96 h median effective concentration (96 h-EC50) values of PVs were 0.65-1.08 mL L-1, and PV300 showed the strongest inhibitory effect. The increased contents of reactive oxygen species (ROS) and malondialdehyde, antioxidant enzymes activities indicated that K. brevis cells were suffering from oxidative stress, leading to lipid oxidation and cell structure damage. The sites of ROS accumulation in the treated cells were chloroplasts and mitochondria. These results suggest the suitability of PVs as potential algaecides for HAB control, and also provide a new direction for biomass valorization.

Publication name

 BIORESOURCE TECHNOLOGY, 247 273-281; 10.1016/j.biortech.2017.09.049 JAN 2018

Author(s)

 Zheng, Hao; Sun, Cuizhu; Hou, Xiaodong; Wu, Miao; Yao, Yuan; Li, Fengmin

Corresponding author(s) 

 LI Fengmin 
 lifengmin@ouc.edu.cn  
 -Ocean Univ China, Minist Educ, Key Lab Marine Environm Sci & Ecol, Inst Coastal Environm Pollut Control, Qingdao 266100, Peoples R China
 -Ocean Univ China, Coll Environm Sci & Engn, Qingdao 266100, Peoples R China 

Author(s) from IGCAS   HOU Xiaodong

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