GB 2715-2016 English PDF

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GB 2715-2016: Hygienic standard for grains
Status: Valid

GB 2715: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB 2715-2016	219	Add to Cart	3 days	Hygienic standard for grains	Valid
GB 2715-2005	399	Add to Cart	3 days	Hygienic standard for grains	Obsolete
GB 2715-1981	199	Add to Cart	2 days	Hygienic standard for grains	Obsolete

Similar standards

GB 2721   GB 2730   GB 2749   GB 2717   GB 2716   

Basic data

Standard ID: GB 2715-2016 (GB2715-2016)
Description (Translated English): Hygienic standard for grains
Sector / Industry: National Standard
Classification of Chinese Standard: C53
Word Count Estimation: 11,123
Date of Issue: 2016-12-23
Date of Implementation: 2017-06-23
Older Standard (superseded by this standard): GB 2715-2005
Regulation (derived from): National Health and Family Planning Commission Notice No.17 of 2016
Issuing agency(ies): National Health and Family Planning Commission of the People's Republic of China, State Food and Drug Administration

GB 2715-2016: Hygienic standard for grains

---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.
Hygienic standard for grains National Standards of People's Republic of China National Food Safety Standard food Issued on. 2016-12-23 2017-06-23 implementation National Health and Family Planning Commission People's Republic of China China Food and Drug Administration released

Foreword

This standard replaces GB 2715-2005 "food hygiene standards." This standard compared with GB 2715-2005, the main changes are as follows. --- Standard name was changed to "national food safety standards for food"; --- Modify the terms and definitions; --- Modify the sensory requirements; --- Modify the poisonous fungi, plant seeds indicators; --- Modify the physical and chemical properties; --- Modify the storage and transport requirements; --- Revised appendix. National Food Safety Standard food

1 Scope

This standard applies to raw grain for human consumption, and grain products, including cereals, beans, potatoes and so on. This standard does not apply to the processing of edible oil raw materials.

2 Terms and definitions

2.1 unprocessed Collectively without grains, beans, potatoes, etc. processing. 2.2 grain products Raw grain, etc. by mechanical processing of primary products, such as rice, wheat powder. 2.3 heat damaged kernels Or other reasons due to microbial heat production and heat to change the normal color or grain by injury. 2.4 ergot Ergot [Clavicepspurpurea (Fr.) Tul.] In rye, wheat, barley, oats and other grasses ovary formed parasitic Sclerotia. 2.5 darnel Mixed together often, and wheat, and its shape is similar to wheat, wheat grain containing toxic base Lolium grassy herb. 2.6 moldy grain Grain mildew and obviously hurt the embryo or endosperm or cotyledons, no edible particles value.

3 Technical requirements

3.1 Sensory requirements Sensory requirements shall comply with the requirements of Table 1. Table 1 Sensory requirements Project requires test methods Color and odor with normal food color, smell GB/T 5492 Heat-damaged kernels /% Wheat ≤ 0.5 According to GB/T 5494 in imperfect grain inspection rules, Sort out the heat damaged kernels, were weighed to calculate the content Moldy grain /% Soybean ≤ Other food except soybeans outside ≤ 1.0 2.0 According to GB/T 5494 in imperfect grain inspection rules, Pick out the moldy grain, were weighed to calculate the content 3.2 Physical and Chemical Indicators Physical and chemical indicators should be consistent with the provisions of Table 2. Table 2. Physical and chemical indicators Item Index Test Method The total hydrocyanic acid/(mg/kg) Tapioca ≤ 10 GB 5009.36 Tannins (dry basis) /% Sorghum, rice, sorghum flour ≤ 0.3 GB/T 15686 3.3 poisonous fungi, plant seeds Limited Poisonous fungi, plant seeds shall be limited in accordance with Table 3. Table 3 poisonous fungi, plant seeds Limited Project Limited test methods Ergot /% Rice, corn, beans Wheat, oats, naked oats, barley, rice barley ≤ Not Detected 0.01

Appendix A

Darnel/(tablets/kg) Wheat, barley ≤ 1 SN/T 1154 Datura (Daturaspp.) Seeds and other poisonous plants a/(tablets/kg) Corn, sorghum, rice, beans, wheat, oats, naked oats, barley, rice barley ≤ 1

Appendix B

a Crotalaria (Crotalariaspp.), wheat Seno (AgrostemmagithagoL.), castor bean (RicinuscommunisL.) and other recognized for Harmful to the health of the seeds. 3.4 Limits of contaminants and mycotoxins Limited 3.4.1 Limits of contaminants should comply with GB 2762, wherein the unprocessed food category shall conform to GB 2762 in cereals, beans, potatoes The provisions of refined grain food category shall conform to the provisions of the GB 2762 mill processed grain, beans, dried potato's. 3.4.2 Limits of Mycotoxins should comply with GB 2761, wherein the unprocessed food category shall conform to GB 2761 in cereals, beans, potato Prescribed class, refined grain food category shall conform to the provisions of the GB 2761 mill processed grain, beans, dried potato's. 3.5 MRL Pesticide residues shall comply with the provisions of GB 2763. 3.6 Food additives and food nutrition fortifier 3.6.1 Use of food additives should comply with the provisions of GB 2760. 3.6.2 food nutrition enhancers should comply with the provisions of GB 14880.

4 Other

Food should be designed storage, special transport. Should be stored in a clean, dry, rain, moisture, insects and rodents, odor-free warehouses, should not be hazardous Substance or substance containing a high moisture coexist, and the use of appropriate technical measures in different ecological regions grain storage, grain storage to ensure security and reduce loss Loss loss, to prevent contamination. Should meet the health requirements of the use of means of transport, the transport process should pay attention to prevent rain and contamination.

Appendix A

Ergot test methods A.1 Identification A.1.1 morphology Ergot elongated strip or banana-shaped, sometimes slightly flat, long 3mm ~ 10mm, coarse 1mm ~ 7mm, black or purple outside, there Longitudinal grooves and transverse cracks, brittle, easily broken, section flat, blunt polygonal or oval, center white, gray or pink and white. Sclerotia germination after dormancy Hair will produce sub-mount; infertility child seat elongate shank, head flat spherical diameter of 1mm ~ 2mm, red-brown, the outer edge of raw perithecium. A.1.2 tissue sections After soaking in water 24h remove ergot, ergot take an expanded fixed in potato or carrot in the middle with a scalpel cut into thin Slices with methylene blue solution (1g/L) staining, observed under a microscope, it organized, and healthy wheat as negative control. A.2 ergot alkaloids ergot red pigment and qualitative A.2.1 Principle Using colorimetric red pigment and ergot alkaloids ergot inspection. Ergot red pigment was red, ergot in saturated sodium bicarbonate solution Base chloroform extract and post-dimethylaminobenzaldehyde contact bluish purple ring, after a few minutes chloroform layer was blue, and in 365nm UV lamp, the ethanol solution was blue fluorescence. A.2.2 Reagents A.2.2.1 tartaric acid solution (20g/L). A.2.2.2 anhydrous ether. A.2.2.3 saturated sodium bicarbonate solution. A.2.2.4 ammonia (11). A.2.2.5 chloroform. A.2.2.6 of dimethylaminobenzaldehyde solution. Weigh 0.125g of dimethylaminobenzaldehyde, plus 100mL sulfuric acid solution (65mL sulfuric acid buffer Slowly poured into 35mL of water, mix, cooling) was dissolved, and then adding 0.1mL ferric chloride solution (50g/L), mix. A.2.2.7 ethanol. wavelength of 365nm UV light under observation without fluorescence. A.2.3 Procedure After taking a few grains of suspicious ergot, placed a mortar pestle, add tartaric acid solution (20g/L) research into viscous, abrasive anhydrous ether twice ~ 3 times, each 5mL ~ 10mL, ether layers were combined, placed in a test tube, a mortar residues on standby. Add in a test tube containing diethyl ether 0.5mL saturated sodium bicarbonate solution, after shaking placement, sodium bicarbonate solution layer was red, it means that the detection ergot red pigment. Healthy wheat Negative control. There residue in a mortar, add ammonia (11) grinding alkaline, extracted with chloroform 2 to 3 times, each 5mL ~ 10mL, together And the chloroform layer was divided into two mix, they were placed in two test tubes. Take one of which, along the wall slowly added 2mL of dimethylamino Benzaldehyde solution, leaving it in contact with a solution of two blue-violet ring, after a few minutes, the chloroform layer were significantly blue, it means that the detection of ergot alkaloids. Take another test tube was heated on a hot water bath, so play to make chloroform, dissolve the residue plus ethanol, at a wavelength of 365nm UV lamp Observation, which was strong blue fluorescence, which indicates detection of ergot alkaloids. Healthy wheat as a negative control. A.3 determination On the basis of identification on ergot, ergot alkaloids ergot red pigment and qualitative examination is positive, then it can be determined ergot detected in the sample. Calculation ergot detectable amount of A.4 sample 1000g (m1) sample ergot content in mass fraction w, according to equation (A.1) Calculated. w = m2 m1 × 100% (A.1) Where. w --- ergot sample content,%; M2 --- lysergic amount detected in the sample, in grams (g); Sample volume (1000g) m1 --- sample in grams (g). Results to three significant figures.

Appendix B

Datura seed testing methods B.1 Identification B.1.1 morphology Datura seed round, rectangular, kidney-shaped, triangular kidney-shaped, oval-shaped broadly ovate, seed length 3mm ~ 5mm, width 2.5mm ~ 4.0mm, both sides of the flat, the back thicker or thick, smooth or wavy edge ridges. Species leathery, pale yellow, brown, tan to dark brown, The surface is slightly wrinkled, or slightly (obviously) concave, with (or without) and coarse textured pocket. Hilum, long triangle, equilateral triangle or T-shaped, sometimes its surface often Covered with remnants of white suspensor. Seed contains a wealth of white endosperm, germ or polycyclic raw campylotropous, few straight students. Figure B.1 for all types of Datura species Child photo. Figure B.1 Datura seed photo B.1.2 determination Compliance with B.1.1 morphological characteristics described may be identified as Datura. B.2 alkaloids colorimetric characterization B.2.1 Principle Samples have color reaction with fuming nitric acid and potassium hydroxide solution was contained atropine and other alkaloids were extracted. B.2.2 Reagents B.2.2.1 ammonia (11). B.2.2.2 ether. B.2.2.3 hydrochloric acid solution (15). B.2.2.4 chloroform. B.2.2.5 anhydrous sodium sulfate. B.2.2.6 nitrate. B.2.2.7 KOH - ethanol solution (100g/L). B.2.3 Procedure About 30 datura seeds into a mortar, add ammonia (11) soaked, soaking moment, ground into viscous, abrasive with ether three times, each Times 10mL, ether combined in a separating funnel, add 10mL hydrochloric acid (15), shaking extraction 1min, hydrochloric acid layer was separated by liquid separation to another leak Bucket, add ammonia (11) made basic with 10mL chloroform shaking extraction 1min, repeat once again combined chloroform layer, by no After dehydration over anhydrous sodium sulfate and concentrated to 0.5mL, spare. Take 0.2mL test solution was evaporated to a small dish, and the solvent evaporated to dryness, add 4 drops of fuming nitric acid to dissolve the residue, evaporated on a water bath, the residue becomes yellow, After cooling, a few drops of potassium hydroxide - ethanol solution (100g/L), the purple violaceum, immediately becomes red. Atropine, hyoscyamine and scopolamine are Have this reaction. B.3 qualitative TLC B.3.1 Principle After atropine and other alkaloids contained in the sample were extracted, separated by thin layer, then the color reagent, compared with the control standards. B.3.2 Reagents B.3.2.1 silica gel G plate. thickness 0.3mm ~ 0.5mm, 105 ℃ activation 1h, put desiccator. B.3.2.2 developing solvent. methanol - ammonia (2003). B.3.2.3 reagent. Weigh 0.85g times bismuth nitrate added 10mL of glacial acetic acid, 40 mL of water and dissolved. Take 5mL, plus 5mL potassium iodide solution Liquid (4g of potassium iodide was dissolved in 5mL water), plus 20mL glacial acetic acid, diluted with water to 100mL. B.3.2.4 atropine standard solution. Weigh 120.0mg atropine sulfate, dissolved in 10mL water, add ammonia (11) alkaline, with trichloro Methane extracted twice 8mL, chloroform extract was a little over anhydrous sodium sulfate, filtered into 20mL tube with a stopper colorimetric, and then less Xu chloroform wash the filter, lotion incorporated into the colorimetric tube, add chloroform to 20mL, this is equivalent to 5.0mg per milliliter solution of atropine. B.3.2.5 scopolamine standard solution. Weigh 145.0mg scopolamine hydrobromide, dissolved in 10mL water, add ammonia (11) alkaline, Extracted with chloroform twice 8mL, chloroform extract was a little over anhydrous sodium sulfate, filtered into 20mL colorimetric tube with a stopper, A little chloroform and then wash the filter, lotion incorporated into the colorimetric tube, add chloroform to 20mL, dubbed equivalent to 5.0mg per milliliter East buttercup Scopolamine. B.3.3 Procedure In the TLC plate at the lower end of 2cm, point 10μL atropine and scopolamine standard solution, 30μL ~ 100μL sample extract concentrate, each Spacing 1.5cm, previously placed expansion tank with developing solvent saturated until the solvent front exhibition to 10cm ~ 15cm, removed, evaporated to dryness Expand Agents, spray chromogenic agent orange-red spots on a positive reaction. references [1] BYER, SOSAV.MolecularPhylogenyoftheJimsonweedGenusDatura (Solanaceae) [J]. SystematicBotany, 2013,38 (3). 818-829. ......

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