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Study on the DDS Cooking of Bambusa changningensis Yi et B. X. Li
Received:February 04, 2024  
DOI：10.11980/j.issn.0254-508X.2024.07.007
Key Words:Bambusa changningensis Yi et B. X. Li  replacement cooking  alkali dosage  sulphidity  Kappa value
Fund Project:2022年宜宾市科技局“揭榜挂帅”项目（2022JB010，2022JB009）；宜宾市科技计划项目（2022JC001）；教育部产学合作协同育人项目（202102072055）；四川轻化工大学2023年大学生创新创业项目（CX2023131）；四川轻化工大学2024年大学生创新创业项目（202410622023，S202410622079）。
Author NameAffiliationPostcode
PANG Chunxia College of Bioengineering， Sichuan University of Science & Engineering， Yibin， Sichuan Province， 644005 644005
ZHAO Ju Sichuan Paper Products Quality Supervision and Inspection Center， Leshan， Sichuan Province， 614000 614000
JIANG Feng College of Bioengineering， Sichuan University of Science & Engineering， Yibin， Sichuan Province， 644005 644005
XIAO Qicong College of Bioengineering， Sichuan University of Science & Engineering， Yibin， Sichuan Province， 644005 644005
ZHAO Mingyao College of Bioengineering， Sichuan University of Science & Engineering， Yibin， Sichuan Province， 644005 644005
ZHANG Shengquan College of Bioengineering， Sichuan University of Science & Engineering， Yibin， Sichuan Province， 644005 644005
LIU Ximo College of Bioengineering， Sichuan University of Science & Engineering， Yibin， Sichuan Province， 644005 644005
ZHAO Xingtao College of Bioengineering， Sichuan University of Science & Engineering， Yibin， Sichuan Province， 644005 644005
LI Wenjun College of Bioengineering， Sichuan University of Science & Engineering， Yibin， Sichuan Province， 644005 644005
YANG Ling* College of Bioengineering， Sichuan University of Science & Engineering， Yibin， Sichuan Province， 644005 644005
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Abstract:A combined approach of single factor experiment and Box-Behnken response surface methodology was employed to investigate the influences of alkali dosage， sulphidity， liquid ratio， the proportion of alkali dosage at different cooking stages， maximum cooking temperature， and holding time on the DDS simulation cooking of Bambusa changningensis Yi et B.X.Li. The results of the single factor experiment revealed that the Kappa value of the DDS pulp was significantly affected by alkali dosage， sulphidity， maximum cooking temperature， and holding time. Through response surface experiments， the alkali dosage， sulphidity and holding time were further optimized， and the nonlinear regression equation was obtained. The obtained equation demonstrated a good fit according to analysis of variance and significance test. The optimum conditions for the DDS simulation cooking were determined as follows： alkali charge of 23.0% （in terms of NaOH）， sulphidity of 18% （in terms of Na2S）， liquid ratio of 1∶4.5， maximum cooking temperature of 160 ℃， holding time of 70 min， and alkali dosage mass ratio of 20∶20∶60 （IC∶MC∶FC）. Under these cooking conditions， the yield of fine pulp was 49.0% and the Kappa value of the bamboo pulp could be reduced to 16.2.
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