关键词: 海带渣, 纤维素, 稀酸, 乙醇, 低温纤维素酶

Abstract: In this paper，we determined the cellulose content of kelp residue and took it as raw material for production of cellulosic ethanol. The methods of pretreatment and fermentation was preliminarily established by experiments. The degradation of kelp residue by low temperature cellulose enzyme QP7 was investigated. Cellulose content of kelp residue was 28.3%. After pretreatment with dilute acid，ethanol productivity by saccharification and fermentation was higher than that of cornstalk under the same conditions. For simultaneous saccharification and fermentation with kelp residue as raw material，by adding some low temperature cellulose enzyme as component of mixed enzyme，ethanol production increased by more than 21%. Experiments showed good prospect of application of using kelp residue as raw material to produce ethanol and a new direction for comprehensive utilization of kelp industry. The data could provide reference for development of other algal biomass energy.

Key words: kelp residue, cellulose, dilute acid, ethanol, low temperature cellulose enzyme