《食品化学与分析 Food Chemistry and Analysis》课程PPT教学课件（英文版）Vitamin

THIAMIN DETERMINATION THIOCHROME (Fluorescent) N K3 Fe(CN)6 Oxidation N S N H3C N CH2 CH3 CH2CH2OH N S N H3C N CH2 NH2 CH3 CH2CH2OH pyrimidine thiazole Excite thiochrome at 365 nm and measure the absorbance at 435 nm

THIAMIN DETERMINATION THIOCHROME (Fluorescent) N K3 Fe(CN)6 Oxidation N S N H3C N CH2 CH3 CH2CH2OH N S N H3C N CH2 NH2 CH3 CH2CH2OH pyrimidine thiazole Excite thiochrome at 365 nm and measure the absorbance at 435 nm

Thiamin Determination in Foods 5 g enriched flour 75 ml 0.1 N HCl Make volume to 100 ml Digest at 1000C for 30 min Centrifuge and filter

Thiamin Determination in Foods 5 g enriched flour 75 ml 0.1 N HCl Make volume to 100 ml Digest at 1000C for 30 min Centrifuge and filter