Standard No.:	GB/T 5009.86-2003
English Name:	Determination of total ascorbic acid in fruits, vegetables and derived products-Fluorometric method
Chinese Name:	蔬菜、水果及其制品中总抗坏血酸的测定(荧光法和2，4？二硝基苯肼法)
Chinese Classification:	C53    Food sanitation
Professional Classification:	GB    National Standard
Issued by:	AQSIQ
Issued on:	2003-8-11
Implemented on:	2004-1-1
Status:	abolished
Superseded by:	GB 5009.86-2016 National Food Safety Standard-Determination of Ascorbic Acid in Foods
Superseded on:	2017-3-1
Abolished on:	2017-03-01
Superseding:	GB/T 12392-1990 Method for determination of total ascorbic acid in fruits, vegetables and derived products―Fluorometric method and colorimetric method 2.4-dinitrophenylhydrazine
Language:	English
File Format:	PDF
Word Count:	3000 words
Price(USD):	224.0
Delivery:	via email in 1 business day

1 Scope This standard specifies determination of total ascorbic acid in the food in fluorometric method and colorimetric method. This standard is applicable to determination of total ascorbic acid in fruits, vegetables and derived products Detection limit of this method: 0.022μg/mL for fluorometric method and 0.1μg/mL for colorimetric method. Linear range: 5~20μg/mL for fluorometric method and 1~12μg/mL for colorimetric method.

Contents Foreword I 1 Scope 2 Principle 3 Reagents 4 Instruments 5 Analysis Procedures 6 Result Calculation 7 Precision 8 Principle 9 Reagents 10 Instruments 11 Analysis Procedures 12 Result Calculation 13 Precision