Microwave-assisted step reduced extraction of seaweed (Gelidiella aceroso) cellulose nanocrystals

Suman Singh; Kirtiraj K Gaikwad; Su-Il Park; Youn Suk Lee

doi:10.1016/j.ijbiomac.2017.03.004

Microwave-assisted step reduced extraction of seaweed (Gelidiella aceroso) cellulose nanocrystals

Int J Biol Macromol. 2017 Jun:99:506-510. doi: 10.1016/j.ijbiomac.2017.03.004. Epub 2017 Mar 4.

Authors

Suman Singh¹, Kirtiraj K Gaikwad¹, Su-Il Park¹, Youn Suk Lee²

Affiliations

¹ Department of Packaging, Yonsei University, Wonju, Gangwon-do, 26493, South Korea.
² Department of Packaging, Yonsei University, Wonju, Gangwon-do, 26493, South Korea. Electronic address: leeyouns@yonsei.ac.kr.

PMID: 28267615
DOI: 10.1016/j.ijbiomac.2017.03.004

Abstract

In the present work, cellulose nanocrystals were isolated from seaweed by microwave-assisted alkali treatment, bleaching, and an acid hydrolysis process. Microwave-assisted alkali treatment reduces the heating time and eliminates the traditional dewaxing process. This is different from the commonly adopted procedure for cellulose nanocrystal (CNC) synthesis, in which CNC synthesis generally follows the dewaxing process. Further, samples obtained after each stage of treatment were characterized and final samples were freeze-dried for further characterization. TEM results revealed that isolated CNCs had a 32nm average diameter and an average length of 408nm. FTIR and XRD data showed that after each stage of chemical treatment, no cellulosic components were removed. The adopted method is faster than the previous traditional method used for isolation of CNCs from seaweed fibers.

Keywords: Biomass; Cellulose nanocrystal; Seaweed.

MeSH terms

Cellulose / chemistry*
Cellulose / isolation & purification*
Chemical Fractionation / methods*
Drug Stability
Hydrolysis
Microwaves*
Nanoparticles / chemistry*
Seaweed / chemistry*
Temperature

Substances

Cellulose