Table 2. Properties of Chitinases from Thermophilic Fungi.

organism	molecular weight (kDa)	pH optimum	temp. optimum (°C)	temp. range (°C)	thermostability (as % activity retained activity)	ref
Aspergillus fumigatus YJ-407	46	5	50–60	45–60	100% activity after 1 h at 45 °C	(14)
					∼70% activity after 1 h at 55 °C
					∼20% activity after 1 h at 60 °C
Chaetomium thermophilum	47	5.5	60	40–70	100% activity after 1 h at 50 °C	(15)
					∼90% activity after 1 h at 60 °C
Gliocladium catenulatum	51	5.0–6.0	60	20–70	40% activity after 20 min at 50 °C	(16)
Rhizopus oryzae		5.5–6.0	60	50–70	100% activity after 30 min at 50 °C	(17)
					∼40% activity after 30 min at 60 °C
Myceliophthora thermophila BJA	48	5.0	55	30–70	70% activity after 5h at 45 °C	(25)
					∼50% activity after 113 min at 65 °C
					∼50% activity after 48 min 75 °C
Thermoascus aurantiacus vs levisporus	48	8.0	50	40–60	∼90% activity after 1 h at 50 °C	(15)
					≈30% activity after 1 h at 60 °C
Thermomyces lanuginosus	44.1	5.0	50	30–60	50% activity at 50 °C after 630 min	(18)
					56% activity at 60 °C after 30 min
Thermomyces lanuginosus	36.6	4.0	40	30–60	50% activity at 40 °C after 577.5 min	(18)
					71% activity at 50 °C after 60 min
Thermomyces lanuginosus SY2	48	55	55	50–60	100% activity after 1 h at 50 °C	(19)
					∼80% activity after 1 h at 60 °C
Thermomyces lanuginosus	42	60	60	30–70	70% activity after 6 h at 50 °C	(20)
Trichoderma viride	28	3.5	55–60		∼30% activity after 3 h at 50 °C	(22)
					∼10% activity after 3 h at 60 °C
Myceliophthora thermophila C1	43	6.0	55	30–70	∼90% activity after >168 h at 50 °C	this work
					50% activity after 48 h at 55 °C
					10% activity after 10 min at 60 °C