International Journal of Food Science / 2019 / Article / Tab 1

Research Article

Effect of Temperature and Duration Time of Maceration on Nitrate Content of Vernonia cinerea (L.) Less.: Circumscribed Central Composite Design and Method Validation

Table 1

Factors and responses of model conditions of circumscribed central composite experimental design.

ConditionFactorsResponses
TemperatureTimeYield of the extraction (%)Nitrate content (%)
Coded Actual (°C)Coded Actual (min)

1-148.8-117.38.40.315±0.008
2191.2-117.310.40.368±0.000
3-148.8152.710.00.372±0.000
4191.2152.715.20.486±0.000
5-√240.0035.06.00.175±0.000
6√2100.0035.016.60.578±0.000
7070.0-√210.07.40.258±0.001
8070.0√260.013.60.536±0.001
9070.0035.011.40.467±0.000
10070.0035.011.40.402±0.000

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