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KMID : 0380620140460050588
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Korean Journal of Food Science and Technology
2014 Volume.46 No. 5 p.588 ~ p.592
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Optimization Study for the Production of 6-Shogaol-rich Ginger (Zingiber officinale Roscoe) under Conditions of Mild Pressure and High Temperature
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Park Ho-Young
Ha Sang-Keun
Choi Ji-Won
Choi Hee-Don
Kim Yoon-Sook
Park Yong-Kon
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Abstract
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Under optimized condition mild pressure in combination with specific temperature for heat treatment transform the 6-gingerol into 6-shogaol. The purpose of this study was to optimize the conditions used for heat treatment under pressure for increasing 6-shogaol content in ginger (Zingiber officinale Roscoe). A central composite experimental design was used to evaluate the effects of application temperature (70-130oC) and temperature-holding time (95-265 min) on the transformation of 6-shogaol. The experimental values were shown to be in significantly good agreement with the predicted values (adjusted determination coefficient, R2 Adj=0.9857). 6-Shogaol content increased as the application temperature and temperature-holding time increased. By analyzing the response surface plots, the optimum conditions of heat treatment (temperature and time) for increasing 6-shogaol content were found to be 127oC and 109 min, respectively. Under these optimal conditions, the predicted 6-shogaol content was 3.98 mg/g dried ginger. The adequacy of the model equation for predicting the optimum response values was effectively verified by the validation data.
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KEYWORD
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Zingiber officinale Roscoe, 6-shogaol, 6-gingerol, response surface methodology
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