(a) physical parameters:   appearance clear, viscous liquid   color light amber to dark amber   texture smooth   aroma characteristic  (b) chemical parameters:   moisture content 17.5 %  hydroxymethylfurfural (hmf) 15 mg/kg  diastase activity (go units) 12 goethe units  total reducing sugars 70 %  sucrose 2 %  fructose 38 %  glucose 30 %  energy 320 kcal/100g  protein 0.3 g/100g  fat 0.1 g/100g  carbohydrates 79 g/100g (c) microbiological analysis:  total plate count (tpc)