不同切片方式对丹参干燥特性的影响

doi:10.3976/j.issn.1002-4026.2023.04.002

Abstract

Abstract:

To explore the effect of different slicing methods on the drying characteristics of Salviae Miltiorrhizae Radix Et Rhizoma, the hot air drying at 40 ℃ and traditional air drying at room temperature were performed and the results were compared. Furthermore, the effect of different slicing methods (circular cutting and 45° oblique cutting) and slice thickness (2, 4, and 6 mm) on the drying characteristics of Salviae Miltiorrhizae Radix Et Rhizoma were investigated. Several water-loss kinetic models were adopted to quantitatively describe the drying characteristics. Results showed that the drying was mainly a falling rate period. The drying rate decreased with the decrease of the moisture content of the dry basis. Furthermore, the larger the slice thickness, the lower the drying rate and the longer the drying time. According to statistical parameters, the Page model predicted and described the drying process more accurately than others. The predicted value of the model was in good agreement with the experimental value, and it could well describe the drying process for different slicing methods. The research provides a guidance for further investigating Salviae Miltiorrhizae Radix Et Rhizoma.

Key words: Salviae Miltiorrhizae Radix Et Rhizoma, slicing methods, drying characteristics, mathematical model

CLC Number:

R283.6

WANG Yuchen, CUI Li, ZHAO Hengqiang, LU Heng, LIU Wei, WANG Xiao. Effect of different slicing methods on the drying characteristics of Salviae Miltiorrhizae Radix Et Rhizoma[J].Shandong Science, 2023, 36(4): 10-17.

Figures/Tables 6

Fig.1

Fig.2

Table 1

Table 2

Statistical results obtained from different slicing methods"

模型序号	厚度/mm	切片	模型参数		χ²	R²	$δ R M S E$
1	4	圆片	K=0.411 44		0.001 24	0.983 86	0.034 13
	2	圆片	K=0.870 93		0.001 43	0.982 47	0.036 38
	6	圆片	K=0.287 59		0.001 19	0.982 66	0.033 39
	2	斜片	K=1.289 36		4.983 33×10^-4	0.994 59	0.021 61
	4	斜片	K=0.661 73		3.627 12×10^-4	0.996 28	0.018 58
	6	斜片	K=0.533 38		7.351 04×10^-4	0.992 19	0.026 46
2	4	圆片	k=0.478 00	n=0.806 01	6.178 44×10^-5	0.999 25	0.007 35
	2	圆片	k=0.915 36	n=0.796 90	1.463 33×10^-4	0.998 34	0.011 21
	6	圆片	k=0.346 06	n=0.811 86	2.631 77×10^-5	0.999 64	0.004 80
	2	斜片	k=1.267 23	n=0.927 04	3.898 14×10^-4	0.995 77	0.019 12
	4	斜片	k=0.682 94	n=0.917 40	1.995 05×10^-4	0.998 06	0.013 43
	6	斜片	k=0.580 17	n=0.854 43	7.740 65×10^-5	0.999 22	0.008 37

Table 2

Table 3

Statistical results obtained from different drying methods"

模型序号	干燥方式	模型参数				χ²	R²	$δ R M S E$
1	晒干	K=0.287 69				7.049 28×10^-4	0.992 22	0.025 87
	晾干	K=0.057 09				3.674 26×10^-4	0.996 88	0.018 82
2	晒干	K=0.319 62	n=0.914 99			5.327 09×10^-4	0.994 43	0.021 90
	晾干	k=0.050 27	n=1.046 92			3.069 13×10^-4	0.997 4	0.017 21
3	晒干	a=0.982 32	k=0.281 19			6.990 13×10^-4	0.992 69	0.025 08
	晾干	a=1.005 71	k=0.057 58			3.753 74×10^-4	0.996 93	0.018 67
4	晒干	a=0.946 55	k=0.331 72	c=0.057 46		1.148 35×10^-4	0.998 87	0.009 87
	晾干	a=1.000 09	k=0.058 81	c=0.008 08		3.795 39×10^-4	0.997 02	0.018 41
5	晒干	a=0.063 4	k₀=0.006 68	k₁=0.334 66	b=0.941 22	1.209 75×10^-4	0.998 88	0.009 85
	晾干	a=1.136 23	k₀=0.063 71	k₁=0.176 55	b=-0.151 11	2.976 35×10^-4	0.997 76	0.015 97
6	晒干	a=0.982 32	c=0.705 66	l=1.584 15		7.401 32×10^-4	0.992 69	0.025 08
	晾干	a=1.005 71	c=0.312 19	l=2.328 44		3.903 89×10^-4	0.996 93	0.018 67
7	晒干	c=0.567 47	l=1.368 49	n=0.914 99		5.640 45×10^-4	0.994 43	0.021 90
	晾干	c=0.128 24	l=1.563 97	n=1.046 92		3.314 66×10^-4	0.997 4	0.017 21

Table 3

Fig 3

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模型序号	模型名称
1	Lewis
2	Page
3	Henderson and Pabis
4	Logarithmic
5	Two-term Model
6	Simplified Fick's diffusion
7	Modifield Page equation-Ⅱ

Effect of different slicing methods on the drying characteristics of Salviae Miltiorrhizae Radix Et Rhizoma

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