Development of biopolymer-mediated nanocomposites using hot-melt extrusion to enhance the bio-accessibility and antioxidant capacity of kenaf seed flour

  • Md Adnan
  • Md Obyedul Kalam Azad
  • Hyeon Seok Ju
  • Ji Min Son
  • Cheol Ho Park
  • Myung Hwan Shin
  • Madhusudhan AlleEmail author
  • Dong Ha ChoEmail author
Original Article


The current study was aimed to enhance the bio-accessibility and functionality of bioactive compounds from kenaf seed flour. Hence, eight different formulations (F1–F8) of kenaf seed nanocomposites (KNC) were prepared using lecithin, whey protein concentrated, and ascorbic acid by hot-melt extrusion (HME) at 80 °C, 100 °C, and 120 °C. Results revealed that F3 and F6 formulations at 100 °C were very promising; exhibited nano-size particle and dispersion, better water absorption-related parameters, and higher content of total polyphenol as well as total flavonoid. Besides, F3 and F6 also exhibited significant antioxidant potentials, evaluated by 1,2-diphenyl-1-picrylhydrazyl (DPPH) and hydroxyl (OH) radical assays. The superior performances of F3 and F6 were evaluated by Fourier transform-infrared spectroscopy (FTIR) and scanning electron microscope (SEM). FTIR confirmed physical crosslinking generation between kenaf seed powder and biopolymers. Multiple water channels were identified through SEM analysis. Therefore, F3 and F6 formulations may be considered as noble formulations to improve bio-accessibility and antioxidant capacity of kenaf seed flour.


Kenaf seed Biopolymers Hot-melt extrusion Food nanocomposites Extraction and bio-accessibility Antioxidant capacity 



This study was supported by the Kangwon National University research Grant 2017 (520170420). We also highly acknowledge the Institute of Kenaf Co., Ltd., Chuncheon 24341, Republic of Korea.

Author contributions

MA designed and conducted the experiment, analyzed the data, and drafted the final manuscript, MOKA, JMS, HSJ, AM, CHP, and MHS revised and improved the manuscript, DHC supervised this research.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

13204_2019_1205_MOESM1_ESM.docx (1.3 mb)
Supplementary material 1 (DOCX 1294 kb)


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Copyright information

© King Abdulaziz City for Science and Technology 2019

Authors and Affiliations

  • Md Adnan
    • 1
    • 2
  • Md Obyedul Kalam Azad
    • 1
    • 2
  • Hyeon Seok Ju
    • 1
    • 2
  • Ji Min Son
    • 1
    • 2
  • Cheol Ho Park
    • 1
  • Myung Hwan Shin
    • 1
    • 4
  • Madhusudhan Alle
    • 3
    Email author
  • Dong Ha Cho
    • 1
    • 2
    Email author
  1. 1.Department of Bio-Health Technology, College of Biomedical ScienceKangwon National UniversityChuncheon-siRepublic of Korea
  2. 2.Institute of Kenaf Co., Ltd.ChuncheonRepublic of Korea
  3. 3.Department of Medical Biomaterials Engineering, College of Biomedical Science and Institute of Bioscience and BiotechnologyKangwon National UniversityChuncheonRepublic of Korea
  4. 4.SJ Global LTDBusanRepublic of Korea

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