Lovastatin Production by Aspergillus terreus Using Agro-Biomass as Substrate in Solid State Fermentation

Table 1

Effect of nitrogen source and mineral solution on lovastatin production in solid state fermentation by A. terreus using rice straw (RS) and oil palm frond (OPF) as substrates.

Treatments	Lovastatin production (mg/kg DM)
	ATCC 20542	ATCC 74135
RS	154.48±22.88^a	157.07±1.92
RS plus mineral	119.35±16.59^ab	146.09±7.49
RS plus mineral and urea	96.3±3.02^bc	118.26±6.38
RS plus mineral and soybean meal	126.36±22.84^ab	139.63±25.45
RS plus mineral and ammonium sulphate	66.19±3.39^c	129.39±21.90
Significant	**	NS
OPF	7.84±0.14^b	13.09±2.22^b
OPF plus mineral	9.66±0.03^b	7.2±1.55^b
OPF plus mineral and urea	21.25±4.66^b	17.58±3.03^b
OPF plus mineral and soybean meal	70.17±4.84^a	63.76±14.00^a
OPF plus mineral and ammonium sulphate	10.06±0.31^b	11.16±3.41^b
Significant	**	**

NS: not significantly different.
**Significantly different at 1% level.
^a,b,c indicating that means for each substrate within column are significantly different.