Study on the stabilization effect of continuous microwave on wheat germ |
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Authors: | Bin Xu Shi-Long Zhou Wen-Juan Miao Chao Gao Ming-Jing Cai Ying Dong |
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Affiliation: | 1. School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China;2. School of Life Science and Technology, China Pharmaceutical University, Nanjing 210009, China |
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Abstract: | The purpose of this research is to study the stabilization effect of microwave on wheat germ using continuous microwave processing equipment. Results from the study indicated that microwave technique had a significant stabilization effect on wheat germ. When the on-line processing capacity of wheat germ was 20 kg/h, the optimal conditions for wheat germ stabilization were microwave power of 4 kW, the processing time of 8 min and ventilation rate of 60 N m3/h. Under such conditions, the residual lipase activity decreased to 14.01% of that of the raw wheat germ. The lipoxygenase lost its activity completely under such intensity microwave processing. After 60 days’ accelerated storage, the acid value increased only 6.56% of that of the stabilized wheat germ before storage. In addition, microwave could cause the death of harmful microorganisms. It was clear that the continuous microwave stabilization process was practicable for wheat germ stabilization. |
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Keywords: | Wheat germ Microwave Lipase Lipoxygenase Stabilization |
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