National standard for white sugar color value

Introduction: photoelectric instruments have been widely used in sugar industry for more than ten years So, what about the national standard of white sugar color value? Come and have a look with you! Color value is an important index to measure the quality of white sugar in the chemical management of sugar factory So, what about the national standard of white sugar color value? Let's introduce the small edition of Baibai safety net! National standard of white granulated sugar of the people's Republic of China white granulated sugar GB 317-1998 replaces GB 317-91 GB / T 317 2-911 Scope this standard specifies the technical requirements, experimental methods, inspection rules and labels, packaging, transportation and storage requirements of white sugar This standard is applicable to white sugar produced from sugarcane, beet or sugar 2 The provisions contained in the following standards of the cited standards shall constitute the provisions of this standard by reference in this standard At the time of publication, the editions indicated are all valid All standards will be revised All parties using this standard shall explore the possibility of using the latest version of the following standards GB 4789.14789.31-94 microbiological part of food hygiene standard GB / T 5009.55-1996 analytical method of food hygiene standard GB 7718-94 general standard for food labeling GB 13104-91 white sugar hygiene standard 3 Technical requirements White granulated sugar can be divided into four grades according to the technical requirements: refining, superior grade, first grade and second grade 3.1 sensory requirements 3.1.1 the grain size shall be uniform and not less than 80% within the following range: -- coarse grain: 0.8002.50 mm; -- large grain: 0.6301.60 mm; -- medium grain: 0.4501.25 mm; -- fine grain: 0.2800.800 mm 3.1.2 the grain or its aqueous solution shall be sweet and odorless 3.1.3 it shall be dry, loose, white and glossy, No obvious black spots 3.2 for the physical and chemical indexes of white granulated sugar, please refer to the project indexes refining superior grade I and II sucrose,% ≥ 99.8 99.7 99.6 99.5 reducing sugar,% ≥ 0.03 0.05 0.10 0.17 conductivity ash,% ≤ 0.03 0.05 0.10 0.15 loss on drying,% ≤ 0.06 0.07 0.12 color value, IU ≤ 30 80 170 260 turbidity, degree ≤ 3.79 11 Insoluble in water impurities, mg / kg ≤ 20305080 according to national standards, white granulated sugar and soft white sugar are divided into refined, superior, first and second grades The above is a small edition for you to introduce some of the national standards on white sugar color value, I hope to help you! If you want to know more about food safety Please pay more attention to Baibai Security Internet bar! Editor in charge: Wang Xiujuan