1 材料与方法
1.1 材料
1.2 方法
表1 响应面分析的因素水平表Tab. 1 Factors and levels used in response surface analysis |
| 因素 Factors | 编码水平Levels | ||
|---|---|---|---|
| -1 | 0 | 1 | |
| (A)pH | 4 | 5 | 6 |
| (B)提取液与叔丁醇体积比 | 1∶0.5 | 1∶1 | 1∶1.5 |
| (C)温度/℃ | 20 | 40 | 60 |
1.3 数据分析
2 结果与分析
2.1 单因素试验
2.2 响应面试验
表2 响应面试验设计及结果Tab. 2 Design and results of response surface test |
| 编号 No. | (A)pH | (B)提取液与叔丁醇体积比 Ratio of extract to t-butanol | (C)温度 Temperature | 胡椒油树脂得率 Yield of pepper oleoresin/% | 胡椒碱含量 Piperine content/% |
|---|---|---|---|---|---|
| 1 | 0 | 0 | 0 | 16.12 | 25.52 |
| 2 | 0 | 1 | -1 | 10.05 | 32.81 |
| 3 | 0 | 0 | 0 | 16.54 | 22.83 |
| 4 | 0 | -1 | -1 | 13.36 | 30.53 |
| 5 | 0 | -1 | 1 | 10.81 | 33.29 |
| 6 | 0 | 0 | 0 | 16.38 | 23.42 |
| 7 | -1 | 0 | 1 | 14.64 | 22.48 |
| 8 | 0 | 1 | 1 | 13.62 | 30.12 |
| 9 | -1 | 0 | -1 | 16.19 | 24.64 |
| 10 | 1 | 1 | 0 | 11.09 | 33.73 |
| 11 | 1 | -1 | 0 | 11.74 | 32.37 |
| 12 | -1 | -1 | 0 | 12.07 | 32.85 |
| 13 | 1 | 0 | -1 | 13.73 | 22.40 |
| 14 | -1 | 1 | 0 | 13.26 | 31.30 |
| 15 | 0 | 0 | 0 | 16.42 | 25.35 |
| 16 | 0 | 0 | 0 | 16.72 | 23.43 |
| 17 | 1 | 0 | 1 | 15.43 | 27.38 |
表3 响应面试验结果的方差分析Tab. 3 Variance analysis of response surface |
| 来源Source | 胡椒油树脂得率Yield of pepper oleoresin/% | 胡椒碱含量Piperine content/% | ||||
|---|---|---|---|---|---|---|
| F值 F value | P值 P value | 显著性 Significance | F值 F value | P值 P value | 显著性 Significance | |
| 模型 | 123.16 | < 0.0001 | ** | 33.29 | < 0.0001 | ** |
| A | 29.80 | < 0.0009 | ** | 2.22 | 0.1796 | |
| B | 2.74×10-3 | 0.9597 | 0.15 | 0.7083 | ||
| C | 2.35 | 0.1695 | 0.77 | 0.4083 | ||
| AB | 11.60 | 0.0113 | * | 2.15 | 0.1860 | |
| AC | 36.20 | 0.0005 | ** | 14.65 | 0.0065 | ** |
| BC | 128.36 | < 0.0001 | ** | 7.59 | 0.0283 | * |
| A2 | 26.63 | 0.0013 | ** | 1.29 | 0.2933 | |
| B2 | 797.34 | < 0.0001 | ** | 268.88 | < 0.0001 | ** |
| C2 | 33.27 | 0.0007 | ** | 0.45 | 0.5217 | |
| 失拟项 | 2.16 | 0.2350 | 0.16 | 0.9165 | ||
注:*表示差异显著(P<0.05);**表示差异极显著(P<0.01)。 | |
Note∶* means significant difference (P<0.05), and ** means extremely significant difference (P<0.01). |
图6 因素间交互作用对胡椒油树脂得率影响的响应面图和等高线图Fig. 6 Response surface and contour of interaction effects of factors on pepper oleoresin yield |
