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Table 4 Six fuel properties of biodiesel—ADU, KV, SG, CP, CN and IV—derived from SDEC-3M samples before and after 12 h N-deficient or N-rich cultivation in darkness, and their standards in China, the USA, and Europe

From: Characterization and optimization of endogenous lipid accumulation in Chlorella vulgaris SDEC-3M ability to rapidly accumulate lipid for reversing nightly lipid loss

Biodiesel property Empirical estimation Standard value [19]
Before cultivation After N-rich cultivation After N-deficient cultivation CN (GB/T
20828)
USA (ASTM
D6751)
Europe (EN
14214)
KV 40 °C (mm2 s−1) 4.56 ± 0.02 4.59 ± 0.02 4.62 ± 0.02 4.39 to 4.95 1.9 to 6.0 1.9 to 6.0
SG (kg L−1) 0.8782 ± 0.0002 0.8779 ± 0.0002 0.8777 ± 0.0002 0.875 to 0.880 0.82 to 0.90 0.87 to 0.89
CP (°C) 6.41 ± 0.47 7.03 ± 0.49 7.69 ± 0.41 2.83 to 14.66 Report Report
CN 56.09 ± 0.23 56.4 ± 0.25 56.73 ± 0.21 54.31 to 59.29 min 49 min 47
IV (gI2/100 g) 88.37 ± 2.6 84.9 ± 2.75 81.24 ± 2.29 42.41 to 108.27
ADU 1.02 ± 0.03 0.97 ± 0.04 0.92 ± 0.03 0.40 to 1.28
  1. Each entry indicates the mean ± S.D., n = 3, which was measured from three independent cultures