English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The algal extracellular polymeric sustances (EPS) have been studied as natural resources for a number of applications. For a macroalgae Spirogyra fluviatilis, the aboundant extracellular matrix on the surface of algae cell. EPS has a gel-like structure that could fractioned into loosely bound EPS (LB-EPS) and tightly bound EPS (TB-EPS). The contents and extraction rate of EPS were compared two chemical (formaldehyde-NaOH and NH4OH) and two physical (ultrasonication and heating) extraction methods. The analysis demonstrated that extraction rates of EPS followed heating (7.94 mg g-1 fresh algae) > ultrasonication (5.02 mg g-1 fresh algae) > formaldehyde-NaOH (3.12 mg g-1 fresh algae) > NH4OH (2.01 mg g-1 fresh algae). The protein to polysaccharides ratio (P/S) in EPS is between 0.23 to 0.35 by chemical methods and between 0.27 to 0.37 by physical methods. The P/S ratio is LB-EPS is higher than TB-EPS. The results indicated that the EPS could be efficiently extracted by the heating method, the influence of P/S ratios were obvious different.

Comparison of EPS Extraction Efficiences from Spirogyra fluviatilis by Chemical and Physical Extraction Methods