Valorization of Camellia oleifera oil processing byproducts to value-added chemicals and biobased materials: A critical review  

作　　者：Xudong Liu Yiying Wu Yang Gao Zhicheng Jiang Zicheng Zhao Wenquan Zeng Mingyu Xie Sisi Liu Rukuan Liu Yan Chao Suli Nie Aihua Zhang Changzhu Li Zhihong Xiao 

机构地区：[1]State Key Laboratory of Utilization of Woody Oil Resource,Hunan Academy of Forestry,Changsha,410004,China [2]Key Laboratory of State Forestry and Grassland Administration on Utilization Science for Southern Woody Oil Resource,Hunan Academy of Forestry,Changsha,410004,China [3]Hunan Provincial Key Laboratory of Oils and Fats Molecular Structure and Function,Changsha,410004,China [4]State Key Laboratory of Separation Membranes and Membrane Processes,College of Chemistry,Tiangong University,Tianjin,300387,China [5]College of Biomass Science and Engineering,Sichuan University,Chengdu,610065,China [6]College of Mechanical Engineering and Mechanics,Xiangtan University,Xiangtan,411105,China

出　　处：《Green Energy & Environment》2024年第1期28-53,共26页绿色能源与环境（英文版）

基　　金：The authors acknowledge the financial support from the National Natural Science Foundation of China(Grant No.32201509);Hunan Science and Technology Xiaohe Talent Support Project(2022 TJ-XH 013);Science and Technology Innovation Program of Hunan Province(2022RC1156,2021RC2100);State Key Laboratory of Woody Oil Resource Utilization Common Key Technology Innovation for the Green Transformation of Woody Oil(XLKY202205);State Key Laboratory of Woody Oil Resource Utilization Project(2019XK2002);Key Research and Development Program of the State Forestry and Grassland Administration(GLM[2021]95);Hunan Forestry Outstanding Youth Project(XLK202108-1);Changsha Science and Technology Project(kq2202325,kq2107022);Science and Technology Innovation Leading Talent of Hunan Province(2020RC4026).

摘　　要：The C.oleifera oil processing industry generates large amounts of solid wastes,including C.oleifera shell(COS)and C.oleifera cake(COC).Distinct from generally acknowledged lignocellulosic biomass(corn stover,bamboo,birch,etc.),Camellia wastes contain diverse bioactive substances in addition to the abundant lignocellulosic components,and thus,the biorefinery utilization of C.oleifera processing byproducts involves complicated processing technologies.This reviewfirst summarizes various technologies for extracting and converting the main components in C.oleifera oil processing byproducts into value-added chemicals and biobased materials,as well as their potential applications.Microwave,ultrasound,and Soxhlet extractions are compared for the extraction of functional bioactive components(tannin,flavonoid,saponin,etc.),while solvothermal conversion and pyrolysis are discussed for the conversion of lignocellulosic components into value-added chemicals.The application areas of these chemicals according to their properties are introduced in detail,including utilizing antioxidant and anti-in-flammatory properties of the bioactive substances for the specific application,as well as drop-in chemicals for the substitution of unrenewable fossil fuel-derived products.In addition to chemical production,biochar fabricated from COS and its applications in thefields of adsorption,supercapacitor,soil remediation and wood composites are comprehensively reviewed and discussed.Finally,based on the compositions and structural characteristics of C.oleifera byproducts,the development of full-component valorization strategies and the expansion of the appli-cationfields are proposed.

关 键 词：Camellia oleifera shell Camellia oleifera cake Value-added chemicals Bioactive components Biobased materials 

分 类 号：X705[环境科学与工程—环境工程]