GB/T 5009.159-2003 English Version, GB/T 5009.159-2003 Determination of reductive-form ascorbic acid in foods (English Version)

Chinese Classification Professional Classification ICS Classification Latest News Value-added Services

Position: Chinese Standard in English/GB/T 5009.159-2003

GB/T 5009.159-2003 Determination of reductive-form ascorbic acid in foods (English Version)
Standard No.:	GB/T 5009.159-2003	Status:	superseded remind me the status change Email:
Target Language:	English	File Format:	PDF
Word Count:	1500 words	Translation Price(USD):	184.0 remind me the price change Email:
Implemented on:	2004-1-1	Delivery:	via email in 1 business day

→

Standard No.:	GB/T 5009.159-2003
English Name:	Determination of reductive-form ascorbic acid in foods
Chinese Name:	食品中还原型抗坏血酸的测定
Chinese Classification:	C53 Food sanitation
Professional Classification:	GB National Standard
Source Content Issued by:	AQSIQ
Issued on:	2003-8-11
Implemented on:	2004-1-1
Status:	superseded
Superseded by:	GB 5009.86-2016 National Food Safety Standard-Determination of Ascorbic Acid in Foods
Superseded on:	2017-3-1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
Target Language:	English
File Format:	PDF
Word Count:	1500 words
Translation Price(USD):	184.0
Delivery:	via email in 1 business day

Standard

GB/T 5009.159-2003 Determination of reductive-form ascorbic acid in foods (English Version)
Standard No.	GB/T 5009.159-2003
Status	superseded
Language	English
File Format	PDF
Word Count	1500 words
Price(USD)	184.0
Implemented on	2004-1-1
Delivery	via email in 1 business day

Detail of GB/T 5009.159-2003

Standard No.

English Name

Chinese Name

Chinese Classification

Professional Classification

ICS Classification

Issued by

Issued on

Implemented on

Status

Superseded by

Superseded on

Abolished on

Superseding

Language

File Format

Word Count

Price(USD)

Keywords

Introduction of GB/T 5009.159-2003

1 Scope This standard specifies spectrophotometric method for the determination of ascorbic acid in foods. It is applicable to the determination of reductive-form ascorbic acid in foods. It is not applicable to the determination of dehydrogenation-form ascorbic acid. 2 Principle In acetic acid solution, the reaction of ascorbic acid with the fast blue B salt will produce yellow derivatives of oxalyl dihydrazide-2-hydroxy butyl ester. Carry out determination of absorbance at the maximum absorption wavelength of 420nm, and compare the quantitative measurement with reference series. 3 Reagent

Contents of GB/T 5009.159-2003

Tel: +86-10-8572 5655 \| Fax: +86-10-8581 9515 \| Email: coc@codeofchina.com \| QQ: 672269886
Copyright: Beijing COC Tech Co., Ltd. 2008-2040



Keywords:
GB/T 5009.159-2003, GB 5009.159-2003, GBT 5009.159-2003, GB/T5009.159-2003, GB/T 5009.159, GB/T5009.159, GB5009.159-2003, GB 5009.159, GB5009.159, GBT5009.159-2003, GBT 5009.159, GBT5009.159