Pectin and cellulose extraction from passion fruit peel waste

Authors

  • Thi Tuyet Mai Phan* Department of Chemistry, University of Science, Vietnam National University, Hanoi
  • Thi Sen Ngo Department of Chemistry, University of Science, Vietnam National University, Hanoi

Keywords:

carboxymethyl cellulose, cellulose, passion fruit peel waste, pectin

Abstract

Pectin and cellulose were successfully extracted from passion fruit peel waste. The maximum pectin yield of the process was 12.60% at pH=2 for 1.5 h. The pure cellulose obtained from the passion fruit peel waste was prepared by refluxing of the passion fruit peel powder with 1 M NaOH and 1.25 M HNO3 solutions at 90°C for 1 h and 1.5 h, respectively. The passion fruit peel cellulose was converted to carboxymethyl cellulose (CMC) by etherification. The pure cellulose was soaked in a mixed solution of isopropyl alcohol and NaOH for 1.5 h. After that, it was reacted with cholroacetic acid at 70°C for 1.5 h. The optimum conditions for carboxymethylation were 5 g cellulose, 2.0 g cholroacetic acid, and 15 ml 20%w/v NaOH. The optimised product had a degree of substitution (DS) of 0.78 and was used as constituent in a biopolymer.

DOI:

https://doi.org/10.31276/VJSTE.62(1).32-37

Classification number

2.2

Downloads

Published

2020-03-15

Received 26 August 2019; accepted 27 December 2019

How to Cite

Thi Tuyet Mai Phan, & Thi Sen Ngo. (2020). Pectin and cellulose extraction from passion fruit peel waste. Vietnam Journal of Science, Technology and Engineering, 62(1), 32-37. https://doi.org/10.31276/VJSTE.62(1).32-37

Issue

Section

Physical Sciences