Mycosystema

Quality improvement and processing characteristics of twin-screw extruded Stropharia rugosoannulata powder

BAN Xinrong, YANG Yan, LI Wen, WU Di, ZHANG Zhong, LI Jingjun, CHEN Wanchao

Mycosystema, 2024, 43(5): 240005. DOI: 10.13346/j.mycosystema.240005

方差来源 Variance source	平方和 Sum of squares	自由度 df	均方 Mean square	F值 F value	P值 P value	显著性 Significance
模型 Model	4.65	9	0.52	26.23	0.000 1	**
A-挤压温度 A-Extrusion temperature	0.34	1	0.34	17.06	0.004 4	**
B-原料加水量 B-Raw water supply	0.97	1	0.97	49.03	0.000 2	**
C-螺杆转速 C-Screw speed	0.00	1	0.00	2.54E-03	0.961 2
AB	0.02	1	0.02	0.92	0.368 2
AC	0.00	1	0.00	0.03	0.863 7
BC	0.25	1	0.25	12.44	0.009 6	**
A²	0.66	1	0.66	33.30	0.000 7	**
B²	1.46	1	1.46	74.32	<0.000 1	**
C²	0.66	1	0.66	33.30	0.000 7	**
残差 Residual	0.14	7	0.02
失拟项 Lack of fit	0.11	3	0.04	6.43	0.052 0
纯误差 Pure error	0.02	4	0.01
总离差 Cor total	4.79	16

Table 3 The results of variance analysis and significance test of regression model

Other figure/table from this article

Table 1 Factor level of response surface design
Fig. 1 Effects of extrusion parameters on soluble dietary fiber (SDF) content of Stropharia rugosoannulata powder. A: Extrusion temperature. B: Raw water supply. C: Screw speed. Different lowercase letters indicate significant differences (P<0.05).
Table 2 Experimental design and results of response surface
Fig. 2 The surface and contour plots of interaction on SDF content.
Table 4 Chromaticity changes of Stropharia rugosoannulata powder before and after extrusion
Fig. 3 SEM images of Stropharia rugosoannulata powder without extrusion (A: 500×; B: 1 000×; C: 2 000×) and after extrusion (D: 500×; E: 1 000×; F: 2 000×).
Fig. 4 Particle size distribution of Stropharia rugosoannulata powder before and after extrusion.
Fig. 5 FTIR spectra of Stropharia rugosoannulata powder before and after extrusion.
Fig. 6 Effects of extrusion on water and oil retention capacity of Stropharia rugosoannulata powder.
Fig. 7 Effects of extrusion on the adsorption capacity of Stropharia rugosoannulata powder. A: Cholesterol adsorption capacity. B: Nitrite adsorption capacity.
Fig. 8 Effects of extrusion on digestion and utilization of Stropharia rugosoannulata powder.