Skip to main content
main-content
Top

Hint

Swipe to navigate through the articles of this issue

25-01-2019 | Original Research | Issue 5/2019

Cellulose 5/2019

Visual degumming process of ramie fiber using a microbial consortium RAMCD407

Journal:
Cellulose > Issue 5/2019
Authors:
Kewei Mao, Honggao Chen, Hanghang Qi, Zidong Qiu, Li Zhang, Jiangang Zhou
Important notes

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Abstract

Morphological changes and biochemical process of ramie retting by RAMCD407 was investigated using microscopy techniques, including OM, PLM, FLSM and SEM coupled with enzyme activity analysis. Results showed that retting was completed within 56 h followed by 0.2% NaOH treatment. Residual gum content and breaking strength of the final fiber was 2.84% and 5.2 cN/dtex, respectively. This fulfills the requirement for ramie spinning. Retting included four main processes: water absorption and CCCO formation; cortex removal; removal of gum in the middle lamella; and removal of gum on the surface of fiber. The first two processes were completed under low enzyme activity condition, while the third process was related to higher pectinase enzyme activity and the last process was related to higher enzyme activities of pectinase and xylanase. In fact, only a small fraction of hemicellulose and pectin is required to be hydrolyzed to ensure fiber separation. In this process, pectinase played a key role supported by xylanase. Valuable retting residues, such as pectinase crystals, pectin blocks, xylan chips and microcrystalline cellulose was recovered from residual liquor by filtration and/or centrifugation. Reuse of these waste residues can help increase the overall economic benefit for ramie industries. The occurrence of spherical balls with double shell structure was found in retting process, and FLSM showed that the outer shell was composed of xylan-rich material. Compared to traditional chemical degumming methods, ramie retting by RAMCD407 is an eco-friendly degumming technique.

Graphical abstract

Please log in to get access to this content

To get access to this content you need the following product:

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Technik" erhalten Sie Zugriff auf:

  • über 50.000 Bücher
  • über 380 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Umwelt
  • Maschinenbau + Werkstoffe




Testen Sie jetzt 30 Tage kostenlos.

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

  • über 69.000 Bücher
  • über 500 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Umwelt
  • Finance + Banking
  • Management + Führung
  • Marketing + Vertrieb
  • Maschinenbau + Werkstoffe
  • Versicherung + Risiko

Testen Sie jetzt 30 Tage kostenlos.

Literature
About this article

Other articles of this Issue 5/2019

Cellulose 5/2019 Go to the issue