Lipase-catalyzed biodiesel production and quality with Jatropha curcas oil: exploring its potential for Central America

Table 2 Flow properties and stability of biodiesel from palm and Jatropha oil

Catalyst	Oil	FFA	Viscosity	Cloud point	OSI	Cetane number
Catalyst	Oil	mg KOH/g ± S.D.	(mm²/s) ± S.D.	(°C) ± S.D.	h ± S.D.	CN ± S.D.
NaOH	Jatropha	0.1 ± 0.1^d	2.7 ± 0.04^d	3.8 ± 0.18^b	4.1 ± 0.1^b	54.8 ± 0.3^b
NaOH	Palm	0.1 ± 0.1^d	4.7 ± 0.07^b	14.3 ± 1.0^a	10.5 ± 0.1^a	63.3 ± 0.5^a
TL	Jatropha	14.7 ± 0.4^b	3.0 ± 0.04^c	4.3 ± 0.29^b	0.5 ± 0.4^d	54.8 ± 0.1^b
TL	Palm	10.8 ± 0.4^c	5.1 ± 0.07^a	14.8 ± 1.0^a	3.9 ± 0.1^c	65.6 ± 1.3^a
CA	Jatropha	16.1 ± 1.2^a	3.0 ± 0.04^c	4.1 ± 0.30^b	0.4 ± 0.5^d	56.0 ± 0.4^b
CA	Palm	13.9 ± 0.2^b	4.9 ± 0.07^ab	14.7 ± 1.0^a	4.7 ± 0.1^b	65.6 ± 0.1^a
ASTM D6751		0.5 Maximum	1.9–6	Report	3 Minimum	47 Minimum
C.V. (%)		5.5	1.4	6.9	7.8	4.5

Data are from biodiesel quality parameters of transesterified oils (Jatropha and palm) with alkaline (NaOH) and enzymatic (TL and CA) catalysts compared to ASTM D6751 limits. Means with different superscript letters (a, b, c, d) on the same column are significantly different (LSD test, P < 0.05). % C.V. percent coefficient of variation

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