, Volume 26, Issue 9, pp 5237–5246 | Cite as

A comparative study of lignocellulosic nanofibrils isolated from celery using oxalic acid hydrolysis followed by sonication and mechanical fibrillation

  • Jing Luo
  • Kaixuan Huang
  • Yong XuEmail author
  • Yimin Fan
Original Research


Two lignocellulosic nanofibrils (LCNF) were produced from celery using oxalic acid hydrolysis and sonication (OS) or refining by a SuperMassColloider grinder treatment (MT). Physicochemical properties, such as morphological properties, crystallinity, thermal stability, zeta potential and transmittance for the obtained nanofibrils were evaluated. Compared to refining in SuperMassColloider grinder, OS treatment contributed greater separation of nanofibril bundles by introducing negative carboxyl groups. In detail, mechanical fibrillation resulted in the LCNF with longer length and thicker diameter. OS treatment produced LCNF with smaller height of 5.5 nm and higher aspect ratio than the one obtained by MT treatment, and endowed high crystallinity and thermal stability due to its preferential degradation of amorphous carbohydrates and lignin. Furthermore, OS-LCNF with carboxyl group contributed more stable aqueous suspension with surface charge of − 32.9 mV, better than MT-LCNF sample with entangled network structure. The comparative study can gain insight into the use of celery as a potential source for nanocellulose production.


Celery Lignocellulosic nanofibrils Oxalic acid hydrolysis Disk grinding 



The research was supported by the National Natural Science Foundation of China (31370573). Also, the authors gratefully acknowledge financial support from the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).


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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  • Jing Luo
    • 1
    • 2
    • 3
  • Kaixuan Huang
    • 1
    • 2
    • 3
  • Yong Xu
    • 1
    • 2
    • 3
    Email author
  • Yimin Fan
    • 1
    • 2
    • 3
  1. 1.Key Laboratory of Forestry Genetics and Biotechnology (Nanjing Forestry University)Ministry of EducationNanjingPeople’s Republic of China
  2. 2.Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical EngineeringNanjing Forestry UniversityNanjingPeople’s Republic of China
  3. 3.Jiangsu Province Key Laboratory of Green Biomass-based Fuels and ChemicalsNanjingPeople’s Republic of China

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