SN/T 1113-2002 English PDFUS$199.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. SN/T 1113-2002: Method for determination of phycocyanin and chlorophyiis in spirulina powder for import and export Status: Valid
Basic dataStandard ID: SN/T 1113-2002 (SN/T1113-2002)Description (Translated English): Method for determination of phycocyanin and chlorophyiis in spirulina powder for import and export Sector / Industry: Commodity Inspection Standard (Recommended) Classification of Chinese Standard: X20 Word Count Estimation: 6,67 Date of Issue: 2002-05-20 Date of Implementation: 2002-11-01 Quoted Standard: GB/T 16919 Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China Summary: This standard specifies the export spirulina powder phycocyanin and chlorophyll content inspection sampling, sample preparation and spectrophotometric method. This standard applies to export spirulina powder phycocyanin and chlorophyll content. SN/T 1113-2002: Method for determination of phycocyanin and chlorophyiis in spirulina powder for import and export---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order. Method for determination of phycocyanin and chlorophyiis in spirulina powder for import and export People's Republic of China Entry-Exit Inspection and Quarantine Industry Standard stew - Phycocyanin, chlorophyll in spirulina powder Method for determining the content ┉┄┄┇┉┇│┃┉┄┃┄┅┎┄┎┃┃┃ ━┄┇┄┅┎┈┃┈┅┇┊━┃┅┄┌┇┄┇│┅┄┇┉┃┍┅┄┇┉ ┐┐ release Implementation People's Republic The General Administration of Quality Supervision, Inspection and Quarantine issued ForewordThis standard is proposed and managed by the National Certification and Accreditation Administration. This standard was drafted by the Hainan Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China. The main drafters of this standard. Zhang Weijun, Hao Chunyan, Li Gaolan, Yun Changhao. This standard is the industry standard for inspection and quarantine issued for the first time. stew - Phycocyanin, chlorophyll in spirulina powder Method for determining the content range This standard specifies the sampling, sample preparation and spectrophotometric methods for the determination of phycocyanin and chlorophyll content in spirulina powder. This standard applies to the determination of phycocyanin and chlorophyll content in spirulina powder. The terms in the following documents become the terms of this standard by reference to this standard. All dated references, all subsequent Modifications (not including errata content) or revisions do not apply to this standard, however, research that encourages agreements based on this standard is No, the latest version of these files can be used. For undated references, the latest edition applies to this standard. GB stew T16919 edible spirulina powder 抽样 Sampling and sample preparation Perform according to the method specified in GB Stew T16919. Determination method . Determination of phycocyanin content .. Method principle The sample is dissolved in phosphate buffer, frozen and melted in a refrigerator to precipitate pigment proteins, and the separated extract is spectrophotometrically used. Determination. .. reagent Phosphate buffer solution. Mix 0.1 mol of stewed L-potassium dihydrogen phosphate solution with 0.1 mol of stewed L-dihydrogen phosphate solution (45+55, stewed pot) The pH of the solution was 7.0. .. Instruments and equipment ... Spectrophotometer. ... Ultrasonic oscillator. ... Centrifuge. 3000r stewed min. ... Low temperature refrigerator. -20 °C. ... Centrifuge tube. 50mL. .. Sample determination Weigh the sample 0.25g ~ 0.5g (accurate to 0.0001g), dissolve with buffer (4.1.2), ultrasonically shake for 5min, make up to volume Shake well in a 250 mL volumetric flask. Transfer all the solution into 250mL wide-mouth plastic bottle, and freeze it in -20 °C refrigerator for 12h (or placed Night), take it out and thaw it. A part of the solution was taken in a centrifuge tube and centrifuged at 3000 rpm for 15 min. Take the supernatant, 1cm ratio For the color dish, the absorbance at 620 nm, 652 nm, and 562 nm was measured on a spectrophotometer, and the buffer (4.1.2) was used as a blank. .. Result calculation The mass fraction of phycocyanin in the sample is calculated according to the following formula (1), formula (2), formula (3), and formula (4). stew - ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of SN/T 1113-2002_English be delivered?Answer: Upon your order, we will start to translate SN/T 1113-2002_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. 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