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Table 3 Carbohydrate composition of Scenedesmus acutus biomass after 30 or 180 days of wet anaerobic storage

From: Assessing the stability and techno-economic implications for wet storage of harvested microalgae to manage seasonal variability

Experimental condition Length of storage (days) Glucan (%, db) Galactan (%, db) Mannan (%, db)
S. acutust0 1 0 26.9 ± 0.04a 3.7 ± 0.3a 8.1 ± 0.1a
Anaerobic* 30 22.8 ± 1.1b 1.9 ± 0.2b 8.3 ± 0.1ab
180 23.5 ± 0.7b 1.3 ± 0.05b 8.7 ± 0.2b
Sulfuric acid (0.5%, db)* 30 19.2 ± 0.01c 1.3 ± 0.1b 8.4 ± 0.05ab
180 19.9 ± 0.04c 1.3 ± 0.04b 8.2 ± 0.01a
p value   < 0.001 < 0.001 0.018
S. acutust0 2 0 21.9 ± 0.4a 3.1 ± 0.1a 8.7 ± 0.3a
Glycosidase* 30 15.2 ± 0.3b 0.9 ± 0.01b 8.7 ± 0.01a
180 10.7 ± 0.01c 1.0 ± 0.00b 7.1 ± 0.02b
Glucose oxidase* 30 12.5 ± 0.2d 1.3 ± 0.1b 8.1 ± 0.2a
180 5.7 ± 0.2e 1.2 ± 0.0b 7.0 ± 0.3b
p value   < 0.001 < 0.001 < 0.001
  1. * Biological replicates (n = 3) were combined to accommodate all analyses. Variation is represented by standard deviation or analytical replicates (n = 2). Letters represent statistically distinct values as determined by Tukey’s test
  2. 1,2Harvest 1 and 2