GB/T 7629-2008 in English
SUPERSEDEDDetermination of vitamin B2 in cereals
- Issued on:2008-05-27
- Implemented on:2008-10-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
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《GB/T 7629-2008谷物中维生素B2测定》由TC270(全国粮油标准化技术委员会)归口,TC270SC1(全国粮油标准化技术委员会原粮及制品分会)执行,主管部门为国家粮食和物资储备局。
本标准规定了用荧光分光光度法测定谷物中维生素B2的原理、试剂和材料、仪器设备、试样制备、分析步骤、结果计算及重复性。 本标准适用于谷物中维生素B2的测定。 本标准参考了AACC Method86?70《Riboflavin―FluorometricMethod》(2000年英文版)。
本标准是对GB/T7629―1987《谷物维生素B2 测定方法》的修订。
本标准与GB/T7629―1987在技术上的主要差异如下:
―――规定了扦样、分样法;
―――盐酸提取改为硫酸提取;
―――增加了对高空白试样氧化条件的规定;
―――取消了按干基计算测定结果的要求;
―――增加了谷物中维生素B2 低含量时测定重复性的要求。
Scope
This standard specifies the principle, reagents and materials, instruments and equipment, sample preparation, analysis steps, result calculation and repeatability of determination of vitamin B in cereals by fluorescence spectrophotometry. This standard applies to the determination of vitamin B 2 in grains. The standard detection limit is 0.06μg.

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