1. Seberang Perai Selatan District Health Office, Nibong Tebal, Pulau Pinang, Malaysia
2. Food Technology Division, School of Industrial Technology, Universiti Sains Malaysia, Pulau Pinang, Malaysia
3. Laboratorio de Envases, Centro de Investigaciόn en Alimentaciόn y Desarrollo, A.C., Hermosillo Sonora, Mexico