1. College of Chemical Engineering; Guangdong University of Petrochemical Technology; Maoming 525000 P. R. China
2. Guangdong Provincial Key Lab of Green Chemical Product Technology; Guangzhou 510640 P. R. China
3. Technology Research Center for Lingnan Characteristic Fruits & Vegetables Processing and Application Engineering of Guangdong Province; Food Science Innovation Team of Guangdong Higher Education Institutes; Maoming 525000 P. R. China
4. Maoming Customs; Maoming 525000 P. R. China