化机浆预浸渍溶出物的抗氧化性及其在食品领域的应用前景

焦婷; 朱北平; 焦健; 苏晨; 田庆文; 房桂干; 张凤山; 邓拥军

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Study on the Antioxidant Activity of Chemi-mechanical Pulp Pre-impregnated Residue and Its Application Prospect in Food Field

Received:June 22, 2024 Revised:July 24, 2024

DOI：10.11981/j.issn.1000-6842.2025.01.125

Key Words:chemi-mechanical pulp;pre-impregnated residue;antioxidant activity;cytotoxicity;food application;UPLC-MS

Fund Project:国家自然科学基金面上项目（32271974）；泰山产业领军人才工程专项经费（tscy20200213）。

Author Name	Affiliation	Postcode
JIAO Ting	Jiangsu Key Lab of Biomass Energy and Material；Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources； Key Lab of Chemical Engineering of Forest Products， National Forestry and Grassland Administration； National Engineering Research Center of Low-carbon Processing and Utilization of Forest Biomass， Institute of Chemical Industry of Forestry Products， CAF； Nanjing， Jiangsu Province， 210042 Nanjing Forestry University， Nanjing， Jiangsu Province， 210037	210037
ZHU Beiping	Jiangsu Key Lab of Biomass Energy and Material；Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources； Key Lab of Chemical Engineering of Forest Products， National Forestry and Grassland Administration； National Engineering Research Center of Low-carbon Processing and Utilization of Forest Biomass， Institute of Chemical Industry of Forestry Products， CAF； Nanjing， Jiangsu Province， 210042	210042
JIAO Jian^*	Jiangsu Key Lab of Biomass Energy and Material；Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources； Key Lab of Chemical Engineering of Forest Products， National Forestry and Grassland Administration； National Engineering Research Center of Low-carbon Processing and Utilization of Forest Biomass， Institute of Chemical Industry of Forestry Products， CAF； Nanjing， Jiangsu Province， 210042	210042
SU Chen^*	Jiangsu Key Lab of Biomass Energy and Material；Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources； Key Lab of Chemical Engineering of Forest Products， National Forestry and Grassland Administration； National Engineering Research Center of Low-carbon Processing and Utilization of Forest Biomass， Institute of Chemical Industry of Forestry Products， CAF； Nanjing， Jiangsu Province， 210042	210042
TIAN Qingwen	Jiangsu Key Lab of Biomass Energy and Material；Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources； Key Lab of Chemical Engineering of Forest Products， National Forestry and Grassland Administration； National Engineering Research Center of Low-carbon Processing and Utilization of Forest Biomass， Institute of Chemical Industry of Forestry Products， CAF； Nanjing， Jiangsu Province， 210042	210042
FANG Guigan	Jiangsu Key Lab of Biomass Energy and Material；Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources； Key Lab of Chemical Engineering of Forest Products， National Forestry and Grassland Administration； National Engineering Research Center of Low-carbon Processing and Utilization of Forest Biomass， Institute of Chemical Industry of Forestry Products， CAF； Nanjing， Jiangsu Province， 210042 Shandong Huatai Paper Co.， Ltd.， Dongying， Shandong Province， 257335	257335
ZHANG Fengshan	Shandong Huatai Paper Co.， Ltd.， Dongying， Shandong Province， 257335	257335
DENG Yongjun	Jiangsu Key Lab of Biomass Energy and Material；Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources； Key Lab of Chemical Engineering of Forest Products， National Forestry and Grassland Administration； National Engineering Research Center of Low-carbon Processing and Utilization of Forest Biomass， Institute of Chemical Industry of Forestry Products， CAF； Nanjing， Jiangsu Province， 210042	210042

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Abstract:

Antioxidant activity of the eucalyptus chemi-mechanical pulp pre-impregnated residue （PR） recognized as waste was studied， and its application prospect in food field was explored. The effects of pre-impregnation conditions （NaOH dosage， temperature and pulp concentration） on the PR antioxidant activity and yield were investigated. The difference in the PR chemical structure at various NaOH dosage was studied. The conformational relationship between the PR composition structure and the antioxidant activity was established. The thermal stability， antioxidant activity after high-temperature treatment and cytotoxicity were also used as the evaluation indexes to evaluate the application performance of PR in the food field. The results showed that the NaOH dosage was the main factor affecting the antioxidant activity and yield of the PR， and the less the NaOH dosage， the lower the yield and the stronger the antioxidant activity of PR. PR fabricated at NaOH dosage of 0 （R0） had the best antioxidant activity with highest DPPH free radical scavenging rate of 82.63%. It was also found that R0 had good thermal stability， and could maintain 84% of the initial level after 1 h of thermal treatment at 200 ℃. Moreover， PR had no cytotoxicity to HepG2 cells at a concentration of 100 μg/mL， which met the basic requirements for food applications. The quinone-type conjugate structure was the main reason for strong antioxidant activity of PR. When the NaOH dosage was at a high level （30 kg/t）， the content of quinone of PR decreased significantly， and thus led to a decreased antioxidant activity.

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