1. Department of Food and Chemical Engineering Shaoyang University ShaoShui Xi Road Shaoyang 422100 P. R. China
2. Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education Hunan Province Key Laboratory of Green Organic Synthesis and Application College of Chemistry Xiangtan University Xiangtan 411105 P. R. China
3. College of Chemistry and Chemical Engineering University of South China Hengyang 421001 Hunan P. R. China