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GB/T 22245-2008 English PDF

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US$139.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 22245-2008: Determination of isofraxidin in health foods
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 22245-2008	139	Add to Cart	3 days	Determination of isofraxidin in health foods	Valid

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Basic data

Standard ID: GB/T 22245-2008 (GB/T22245-2008)
Description (Translated English): Determination of isofraxidin in health foods
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: C53
Classification of International Standard: 67.040
Word Count Estimation: 6,671
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 determination in health food Isofraxidin 's. This standard applies to Acanthopanax as the main raw material of health food products in different pyridine hydrochloride determination of skin. When the sample volume 2. 0g, set the volume to 10mL, injection volume 10��L, the detection limit is 2. 0 �� 10-4g/kg, the limit of quantification method was 6. 0 �� 10-4g/kg. The linear range is 2. 0��g/mL ~ 40��g/mL.

GB/T 22245-2008: Determination of isofraxidin in health 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 isofraxidin in health foods ICS 67.040 C53 National Standards of People's Republic of China Health foods of different triazine measured skin pyridine Posted 2008-07-31 2008-11-01 implementation People's Republic of China Ministry of Health Standardization Administration of China released

Foreword

This 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. Hebei Province Center for Disease Control and Prevention. The main drafters of this standard. Yang Jin, Fang calm, Wang Zhu days, often Feng Kai, Song Fengying. This standard is the first release. Health foods of different triazine measured skin pyridine

1 Scope

This standard specifies the method for determination of health food in the isofraxidin. This standard applies to Ciwujia the main raw material of health food products in different triazine piperidine of measuring skin. When the sampling amount of 2.0g, set the volume to 10mL, injection volume 10μL, the limits of detection (LOD) of 2.0 × 10 -4g/Kg, method The limit of quantitation (LOQ) was 6.0 × 10-4g/kg. The linear range of 2.0μg/mL ~ 40μg/mL. Principle 2 According isofraxidin soluble in methanol, acetonitrile, chloroform physical and chemical properties, sample isofraxidin followed by methanol and chloroform two Solutions were extracted methanol to volume, filtered backward high performance liquid chromatography, after reverse phase C18 column by UV detector, according to Retention times and peak areas for qualitative and quantitative.

3 Reagents and materials

3.1 methanol (CH3OH). pure class distinctions. 3.2 acetic acid (CH3COOH). AR. 3.3 acetonitrile (CH3CN). chromatography. 3.4 chloroform (CHCl3). AR. 3.5 Water (H2O). a laboratory water conductivity (25 ℃) of 0.01mS/m. 3.6 isofraxidin standard. Purity ≥99%. 3.7 isofraxidin stock standard solution (1.00mg/mL). Weigh accurately isofraxidin standard 0.01g (accurate to 0.0001g), placed 10mL volumetric flask, and dissolved in methanol to volume, and mix (this standard solution at 4 ℃ refrigerator to save 7d). 3.8 isofraxidin standard solution (100μg/mL). lessons isofraxidin stock standard solution 1.00mL to 10mL volumetric flask, methanol To volume, and mix (this standard solution at 4 ℃ refrigerator to save 7d).

4 instruments and equipment

4.1 High performance liquid chromatography. a UV detector or diode array detector. 4.2 ultrasonic cleaner. Step 5 Analysis 5.1 Sample Processing According to the content of the sample, weighed 0.5g ~ 5g homogeneous sample (accurately weighed to 0.001g) placed in 25mL test tube, add methanol 20mL, After ultrasonic extraction 20min, filtered, washed with 20mL methanol and the residue was washed three times, collect all the filtrate evaporated to dryness in a water bath, add appropriate amount of water-soluble Solution and transferred to a separatory funnel with 30mL chloroform at the second, and the combined chloroform extracts were evaporated to dryness in a water bath, add methanol Dissolved and set the volume to 2.0mL, through 0.45μm membrane, and the filtrate set aside. 5.2 Preparation of standard curve Use standard solution was diluted with methanol to prepare a standard solution isofraxidin concentrations were 2.00μg/mL, 4.00μg/mL, 8.00μg/mL, 10.0μg/mL, 20.0μg/mL, 40.0μg/mL as the standard series. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 22245-2008_English be delivered?

Answer: Upon your order, we will start to translate GB/T 22245-2008_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 22245-2008_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 22245-2008_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.