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Table 1 Storage performance 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

Treatmenta Length of storage (days) Dry matter loss (%, db) Material pH Total organic acids (%, db)b
Anaerobic 30 10.8 ± 3.7 4.2 ± 0.06 15.8 ± 4.3
180 1.7 ± 1.6c 4.5 ± 0.06 17.4 ± 4.7
Sulfuric acid (0.5%, db) 30 15.5 ± 1.4 4.2 ± 0.02 17.6 ± 1.8
180 5.4 ± 4.2c 4.6 ± 0.4c 16.3 ± 4.7
Glycosidase 30 11.6 ± 2.0 5.0 ± 0.21 10.5 ± 0.7
180 9.7 ± 1.1 4.4 ± 0.04c 19.2 ± 0.6
Glucose oxidase 30 15.1 ± 0.5 5.1 ± 0.1 14.8 ± 1.4
180 13.2 ± 1.0 4.7 ± 0.2 17.5 ± 3.4
  1. aAll treatment conditions were stored anaerobically in the dark at 20% solids. Mean (n = 3) and standard deviation are presented
  2. bTotal organic acids refers to the sum of succinic, lactic, formic, acetic, propionic, isobutyric, butyric, isovaleric, and valeric acids present after storage
  3. cRepresent statistically significant difference between 30 and 180 days treatments based on likelihood probability analysis using 5% confidence intervals