Kinetic Models for Glucosamine Production by Acid Hydrolysis of Chitin in Five Mushrooms

Table 2

Fitting of experimental results to different reaction models.

Mushroom	Temperature (°C)	Reaction kinetic equation		Coefficient of determination (R^2)
Enoki mushroom	90	Zero-order		0.9569
		First-order		0.9591
		Second-order		0.6460
	100	Zero-order		0.9475
		First-order		0.9358
		Second-order		0.5367
	110	Zero-order		0.9623
		First-order		0.9273
		Second-order		0.5263
Oyster mushroom	90	Zero-order		0.9592
		First-order		0.9886
		Second-order		0.8856
	100	Zero-order		0.9380
		First-order		0.7945
		Second-order		0.2831
	110	Zero-order		0.8642
		First-order		0.6013
		Second-order		0.2163
Straw mushroom	90	Zero-order		0.9586
		First-order		0.8902
		Second-order		0.7658
	100	Zero-order		0.9833
		First-order		0.8779
		Second-order		0.6756
	110	Zero-order		0.9803
		First-order		0.8194
		Second-order		0.5223
Shiitake	90	Zero-order		0.9979
		First-order		0.9707
		Second-order		0.8737
	100	Zero-order		0.9913
		First-order		0.933
		Second-order		0.7393
	110	Zero-order		0.9914
		First-order		0.9355
		Second-order		0.7471
Wood ear mushroom	90	Zero-order		0.9281
		First-order		0.8191
		Second-order		0.6934
	100	Zero-order		0.9469
		First-order		0.8087
		Second-order		0.4911
	110	Zero-order		0.9148
		First-order		0.8416
		Second-order		0.6206

[A]₀ is the initial chitin content of each mushroom and [A] is the chitin content at reaction time t.