GB/T 22254-2008 English PDFUS$239.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 22254-2008: Determination of aspartame in foods Status: Obsolete
Basic dataStandard ID: GB/T 22254-2008 (GB/T22254-2008)Description (Translated English): Determination of aspartame in foods Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: C53 Classification of International Standard: 67.040 Word Count Estimation: 6,646 Date of Issue: 2008-07-31 Date of Implementation: 2008-11-01 Regulation (derived from): National Standard Approval Announcement 2008 No.12 (Total No.125) Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China Summary: This standard specifies the method for the determination of aspartame in foods. This standard applies to carbonated drinks, milk drinks, determination of fruit juices and drinks aspartame solids concentration. When the sample weight of 5g, constant volume of 25mL, during injection 20��L, the detection limit was 0. 002g/kg, the limit of quantification of 0. 006g/kg, the linear range was 25��g/mL ~ 500��g/mL. GB/T 22254-2008: Determination of aspartame in foods---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.Determination of aspartame in foods ICS 67.040 C53 National Standards of People's Republic of China Determination of aspartame in food Posted 2008-07-31 2008-11-01 implementation People's Republic of China Ministry of Health Standardization Administration of China released ForewordThis standard is proposed and administered by the People's Republic of China Ministry of Health. This standard is drafted by. China Center for Disease Control Nutrition and Food Safety. Participated in the drafting of this standard. Disease Prevention and Control Center of Shandong Province, Jilin Province Disease Prevention and Control Center. The main drafters of this standard. Yang Jin, Jiangding Guo, Wang Zhu days, Li Wei, Liu Sijie. This standard is the first release. Determination of aspartame in food1 ScopeThis standard specifies the method for determination of aspartame in food. This standard applies to carbonated drinks, milk drinks, juice drinks and solid determination of aspartame concentrated. When the sample weight was 5g, constant volume volume of 25mL, when injection 20μL, the detection limit was 0.002g/kg, the limit of quantification The linear range of 0.006g/kg, the method was 25μg/mL ~ 500μg/mL. Principle 2 According to the characteristics of aspartame soluble in water and ethanol and other solvents, solid drinks aspartame with distilled water in the ultrasonic oscillation under extraction, The extract was washed with water volume; carbonated beverages in addition to carbon dioxide after the sample volume with water; milk beverages aspartame sample protein was precipitated with ethanol, The supernatant was ethanol + water (2 + 1) to volume, and the extract liquid chromatography separation ODSC18 reverse phase column, detection at wavelength 208nm, Chromatographic retention time qualitative, external standard.3 Reagents3.1 methanol (CH3OH). chromatography. 3.2 Ethanol (CH3CH2OH). pure class distinctions. 3.3 Aspartame standard. Purity ≥99%. 3.4 Water (H2O). a laboratory water conductivity (25 ℃) of 0.01mS/m. 3.5 pH4.3 water. water with acetic acid to adjust pH value of 4.3. 3.6 Aspartame stock standard solution (1.00mg/mL). Weigh 0.1g of aspartame standard (accurate to 0.0001g), placed 100mL flask, pH4.3 with water to dissolve and dilute to the mark, placed in the refrigerator for a period of three months. 3.7 Aspartame use standard solution preparation series. aspartame standard stock solution with pH4.3 water progressively diluted to 500μg/mL, 250μg/mL, 125μg/mL, 50.0μg/mL, 25.0μg/mL using the standard solution series. Placed in the refrigerator for a period of Two months.4 Instrument4.1 liquid chromatograph. equipped with a diode array detector. 4.2 ultrasonic oscillator. 4.3 Centrifuge. 4000r/min. Step 5 Analysis 5.1 sample handling 5.1.1 carbonated beverages Weigh about 10g sample (sample weight to the nearest 0.001g), 50 ℃ lukewarm removing carbon dioxide, water volume to 25mL ~ 50mL, 4000r/min centrifugal 5min, supernatant aqueous 0.45μm membrane filter and set aside. 5.1.2 Milk Drinks Weigh about 5g sample (sample weight to the nearest 0.001g), centrifuge tube in 50mL, 10mL of ethanol was added, cover and gently up and down ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 22254-2008_English be delivered?Answer: Upon your order, we will start to translate GB/T 22254-2008_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 22254-2008_English with my colleagues?Answer: Yes. 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