Bangladesh Standard Specification for Fortified Wheat Atta (BDS 1793:2008)

19935 290@ BDS { : 2008 Bangladesh Standard SPECIFICATION FOR FORTIFIED WHEAT ATTA Cereals, pulses and their products Sectional Committee, AFDC — 1,- CHAIRMAN ‘ REPRESENTING DR. MD. AFZAL HOSSAIN Bangladesh Agricultural University, Mymensingh. MEMBERS DR. LT. COL. SARDER MAHMUD Savoy Icecream Factory (Sena Kalyan Sangstha), Dhaka eh AMINUL KABIR Bangladesh Rice Research Institute, Gazipur MR. MD. MOHAFEZ ALI Directorate of Food, Dhaka DR. UMMAY ARA Bangladesh Council of Scientific and Industrial Research, Dhaka MR. JAFAR ULLAH GAZI ‘Department of Agricultural Extension, Dhaka DR. SHAH MAHFUZUR RAHMAN Institute of Public Health, Dhaka MR.MD. GOLAM SARWAR Dhaka City Corporation, Dhaka MR. A. K. M ZIAUL HAQUE Nabisco Biscuit and Bread Factory Ltd. Dhaka MR. D. D. GHOSAL . Bombay Sweets and Company Ltd. Dhaka MR. RAFIQUIL. ISLAM Haque Brothers (Industries) Ltd. Dhaka MR. MD. SAFIQUR RAHMAN Bangladesh Standards and Testing Institution, Dhaka Director (standards) (Ex-officio member) STAFF MR. A. S. M. NURUL ISLAM Bangladesh Standards and Testing Institution Deputy Director (Chemical) in charge MR. MD. MOFIDUL ISLAM Bangladesh Standards and Testing Institution Assistant Director (A & F) MR. MD. HABIBUR RAHMAN Bangladesh Standards and Testing Institution Senior Examiner (A & F) and Secretary to the Committee. MR. GOLAM MD. SARWAR Bangladesh Standards and Testing Institution Examiner (A & F) BANGLADESH STANDARDS AND TESTING INSTITUTION MAAN BHABAN 116/A, TEJGAON INDUSTRIAL AREA & DHAKA-1208, BANGLADESH 4293: 2408 Bangladesh Standard BDS :2009 SPECIFICATION FOR FORTIFIED WHEAT ATTA 0. FOREWORD 0.1 This Bangladesh Standard was adopted by the Bangladesh Standards and Testing Institution ont? March..2028....after the draft finalized by the Cereals, Pulses and their Products Sectional Committee had been approved by the Agricultural and Food Products Divisional Committee. 0.2 Wheat atta is known as whole wheat flour. Wheat atta is prepared in Bangladesh by grinding whole wheat in larger mills using mechanical power or in large roller flour mills. 0.3. Inan effort at nutritional upgrading , fortified wheat atta to which vitamins and minerals are to be added. This standard is expected to help in exercising proper quality control in the " manufacture of fortified wheat atta of good quality under hygienic conditions. 0.4 Bangladesh Standard for wheat atta (BDS 380:1980, Amendment-1, 2001) has already been published . Separate standards on fortified wheat atta and fortified maida are also being brought out . 0.5 The Sectional Committee responsible for the preparation of this standard has taken into consideration the views of producers, consumers, and technologists and has related the standard to the manufacturing and trade practices followed in the country in this field. 0.6 In the formulation of this standard , assistance has been derived from the following publications: 1S 10898:1984, Reaffirmed-2001. Fortified Wheat Atta Bureau of Indian Standards i SCOPE 1.1 This standard prescribes the requirements and the methods of sampling and test for fortified wheat atta, hereafter termed FW atta. 2.. REQUIREMENTS 2.1 The FW atta shall be prepared by thoroughly and uniformly blending suitable proportions of premix containing necessary amount of fortificants with wheat atta of good quality (see BDS 380:1980, amendment-1,2001*).It shall be in the form of powder having a characteristic © taste and flavour. The product shall be free from rancidity and insect , rodent or fungus infestation . It shall also be free from fermented, musty or other objectionable odour. It shall neither have any ingredients other than those specified -nor any extraneous matter. Note: The appearance , taste and odour shall be determined by sensory evaluation taste. 2.2 The vitamins and the minerals in the premix shall be of pharmaceutical or food grade . 2.3 Hygienic Conditions - The FW atta shall be manufactured, packed , stored and distributed under hygienic conditions to BDS CAC RCPI : 2002 * ** Code of practice general principles of Food Hygiene. seagate engine mo ome Handling, Storage and Transportation -These should be as per Codex Food Hygiene Basic Text. 3° Edition, 2003. The product shall also conform to the requirements given in Table |. PACKING AND MARKING Packing — The packages may preferably be of 500g , | kg , 2kg , 5 kg and thereafter, in multiples of 5 kg as desired by the purchaser. . For packages above 65 kg , unless otherwise agreed between the purchaser and the supplier, the material for packing shall be single sound A- twill or B- twill jute bag conforming to BDS 930:1980! or BDS 906:1979" : TABLE | REQUIREMENTS FOR FORTIFIED WHEAT ATTA Si. CHARACTERISTIC REQUIRE | METHOD OF | METHODOTEST REE No. MENT TEST REF. TO TO BDS APPENDIX 1. | Moisture, percent by mass, Max 13.0 A - 2: | Total ash (on dry basis) percent by mass, 2.0 B - Max ; 3. | Acid insoluble asi{on dry basis), 0.1 € - percent by mass, Max 4. | Gluten(on dry basis), percent by mass,Min 8.0 D = -3. | Total protein (N x 6.25) (on dry basis), 10.0 - Appendix A of percent by mass,Min BDS 1168:2002 * 6. } Crude fiber(on dry basis) percent by mass, 2.0 E - Max. Bee Alcoholic acidity (as H2 SO,4), with 90 0.16 F - percent alcohol, percent by mass,Max : : 8. | Granularity To satisfy G - : the tes 9. | Calcium , mg/kg. Min 53 - Cl.12 of BDS ; 1010:1982 * * 10. | fron, mg/kg, Min 55 aoe Appendix A of BDS ; 1769 :2006 + 11. | Thiamine(as hydrochloride) mg/kg,Min EG - - 12. | Riboflavin, mg /kg,Min 4 - - 13. | Niacin mg/kg,Min ; 15 - * 14. | Pyridoxine mg/kg, Min. a - = 15. | Vit By. mg/kg, Min. ~ 0.01 - = 17. | Zinc, mg/kg, Min. 27 Bie CL17 of BDS 5: 1010 :1982 ** 18. | Vitamin-A, fU/kg, Min. 10,000 - Appendix B of BDS Gmg) 1770 :20064++ 19. {| Folic Acid, mg/kg, Min. 2 = * 2 A twill jute bags B. twill jute bags. ig Wheat flour for use in priscuit ladustry + Method of sampling and test for processed fruits and Vegetables ++ Fortified Soyabean Oil ** Fortified Edible palm Oil. = : BDE 1X99: WES 3.1.2 The smaller packages should be multilayered food grade impermeable to moisture and opaque, The thickness of the packages should not be below 40 micron. 3.1.3 All packages should be air tight and sealed properly. 3.1.4 Storage condition of premix-It should be stored in a cool, clean and dry place with a shelf life of one year. 3.2 Marking - Each packet or bag shall be suitably marked so as to give the following information: a) Name of the product ; b) Name and full address of the manufacturer; ¢) Batch or code number; d) Net content e) Date of manufacture f) Date of expiry g) Maximum retail price(MRP) h) Fortificants added. 3.2.1 All markings shall be applied on the packages/bags in such a manner that the dye or ink does not penetrate into the material . 3.2.2 Each packet or bag shall also be marked with the BSTI Certification Mark : NOTE: The use of the BSTI Certification mark is governed by the provisions of the Bangladesh Standards and Testing Institution Ordinance, 1985 and BSTI (amendment) Act - 2003 and the Rules and Regulation made thereunder. Details of conditions under which a license for the use of BST! Certification marks may be granted to the manufacturer or processors may be obtained from the Bangladesh Standards and Testing Institution. 4. SAMPLING 4.1 The method of drawing representatives samples of the material and the criteria fo \ conformity shall be as prescribed in Appendix H. “5 TESTS 5.1 Tests shall be carried out as prescribed under 2.1 and in the appropriate BDS Specified in col 4 of table | . 5.2 Quality of Reagents : - Unless specified otherwise pure chemicals shall be employed in tests and distilled water shall be used where the use of water as a reagents is intened. NOTE : Pure chemicals shall mean chemical that do not contain impurities: which affect the results of analysis. APPENDIX—A [ Table 1, item (i) ] DETERMINATION OF MOISTURE A1 PROCEDURE A-1.1 Weigh accurately about 5 g of the material in a dish made of porcelain, silica or platinum, previously dried in an electric oven and weighed. Place the dish in an electric oven maintained at 105° + 1°C, forfive hours. Cool the dish in a desiccator and weigh with the lid on. Repeat the process of heating, cooling and weighing at half-hour intervals until the loss in mass (weight) between two successive weighings is less than one milligram. Record the lowest mass (weight) obtained, : NOTE-—Preserve the dish containing this dried material for the determination of total ash (see B-1.1) and crude fibre (see E-2.1). A-2. CALCULATION 100 (W, — W,} A-2.1 Moisture, percent by mass (weight) = a W : : = where : W, = mass (weight) in g of the dish with the material before drying, W, = mass (weight) in g of the dish with the material after drying, and W — mass (weight) in g of the empty dish. APPENDIX—B { Table 1, Item (ii) } DETERMINATION OF TOTAL ASH B-1,. PROCEDURE B-1.1 Ignite the dried material inthe dish (A-1.1) with the flame of a suitable burner for about one hour. Complete the ignition by keeping in a muffle furnace at 650° to 600°C until grey ash results. Cool in a desiccator and weigh. Repeat the process of igniting cooling and weighing at half-hour intervals until the difference in mass (weight) between two successive weighings is less than one milligram. Note the lowest mass (weight). NOTE—Preserve the dish containing this ash for the determination of acid insoluble ash (see C-2.1). * Specification for water for laboratory use. ee 8-2. CALCULATION 8-21 Total ash (on dry basis), percent : 2 100 (w, — W) by mass ( weight = Wr w where W, = mass (weight) in g of the dish with the ash, W == mass ( weight) in g of the empty dish, and W, = mass (weight) ing ofthe dish with the dried material taken for the test (W, under A - 2.1). ~ APPENDIX—C [ Table 1, Item (ii) ] DETERMINATION OF ACID INSOLUBLE ASH C-1. REAGENT C-1.1 Dilute Hydrochloric Acid — approximately 5 N, Prepared from concentrated hydro- chloric acid (see BDS 37 : 1961*). C-2 PROCEDURE C-2.1 Yo the ash contained in the dish (8-1.1) add 26 mi of dilute hydrochlotic acid, cover with a watch-glass and heat ona water-bath for 10 minutes. Allow to cool and filter the contents ‘of the dish through a Whatman filter paper No. 42 or its equivalent. Wash the filter paper with water until the washings are free from the acid and return it to the dish. Keap it in an electric alr-over maintained at 135° + 2°C for about 3 hours ignite in a muffle furnace at 550° to 600°C for one hour. Cool the dish in a desiccator and weigh. Repeat the process of igniting inthe muffle furnace, © cooling and weighing at half-hourf intervals until the difference in mass (weight) between two successive weighings is less than one milligram. Note the lowest Mass ( weight). C-3 CALCULATION | €-3.1 Acid insoluble ash (on dry basis), percent by mass “(weight) ~ 200(W, — W) . : Bag WwW where, W,= mass ( weight) in g of the dish with the acid insoluble ash, W = mass (weight) in g of the empty dish. and W, = mass (weight) in g of'the dish with the dried material (W, undet A - 2.1). - Specification for hydrochloric acid, <i ” 8D5 APPENDIX—D [ Table 1, Rem (iv) ] - DETERMINATION OF GLUTEN D-1 PROCECURE D-1.1 Weigh accurately into a dish about 25.9 of the material. Add absut 15 mi of water to the material and make it into a dough, taking care to see that all the material is taken into the.dough. Keep the dough gently ina beaker tilled with water and let it stand for one hour. Remove the dough and place it in a piece of bolting silk cloth with an aperture of 0.16 mm size (No 10 XXX) and wash it witha gentle stream of tap water till water passing through the silk does not turn blue when a drop of iodine solution is added to it. Spread the sitk tight on a porcelain plate for facilitating screping. Transfer the residue from the silk by means of a spatula to a tared porcelain dish. Spread the wet gluten into a thin layer and cut into small pieces. Transfer any residue sticking to the spatula into the porcelain dish. Piace the porcelain dish in an ait-oven maintained at 133° 2°C. Dry for two hours. Cool ina desiccator and weigh. D-2. CALCULATION D-2.1 Gluten (on dry basis), percent by mass (weight) = ec eee where W, = mass (weight) in g of porcelain dish with diy gluten, W, = mass (weight) in g of the empty porcelain dish, W. = mass (weight) in g of the material taken for the test, and M.= moisture, percent by mass (weight) (A - 2.1). APPENDIX—E [ Table 1, - Item (vij} DETERMINATION OF CRUDE FIBRE E-1 REAGENTS E-1.1 Dilute Sulphuric Acid — 1.25 percent ( w/v}, accurately prepared. E-12 Sodium Hydroxide Solution — 1.25 percent (w/v), accurately prepared. E-1.3 Ethyl Alcohol — 95 percent by volume. E-2 PROCEDURE E-2.1 Weigh accurately about 25g of ths material preserved undet A-1.1 and transfer it to a litre flask. Take 200 mi! of dilute sulphuric acid in a beaker and bring to the boil. Transfer the whole of the boiling acid to the flask containing the tat-free material and immediately con- nect the flask with a water-cooled reflux condenser and heat, so that the contents of the flask begin to boil within one minute. Rotate the flask frequently, taking ‘care to keep the material from remaining on the sides of the flask and out of contact with the acid. Continue boiling Ek Be eos 1799! 208% for exactly 30 minutes. Remove the flask and filter through fine linen {about 18 threads to the centimetre) held in a funnel, and wash with boiling water until the washings are no longer acid to litmus. Bring to the bail some quantity of sodium hydroxide solution under a@ reflux condenser, Wash the residue on the linen into the flask with 200 mi of the boiling sodium hydroxide solu- tion. Immediately connect the flask with the reflux condenser and boil for exactly 30 minutes. Remove the flask and immediately filter through the filtering cloth. Thoroughly wash the residue with boiling water and transfer to a Gooch crucible prepared with a thin but compact layer of ignited asbestos. Wash the tesidue thoroughly first with hot weter and then with about 15 mt cf ethyl alcohol, 95 percent by volume. Dry the Gooch crucible and contents at 105° + 2°C in an alr-oven to constant mass (weight). Cool and weight incinerate the contents of the Gooch crucible in an electric muffle furnance at 600° + 20°C until all the carbonaceous matter js burnt. Cool the Gooch crucible containing the ash in a desiccator and weigh. E-3 CALCULATION E-3.1 Crude fibre ( on dry basis ), percent by mass (weight) = ow) where W, = mass (weight) ing of Gooch crucible and contents before ashing, W, = Mass (weight) ing of Gooch crucible containing asbestos and ash. and W = mass (weight) in g of the dried material taken for the test. APPENDIX—F {Table 1, Item (vil)] DETERMINATION OF ALCOHOLIC ACIDITY F-1 REAGENTS F-1.1 Neutral Ethyl Alcohol — 90 percent by volume. F-1.2 Standard Sodium Hydroxide Solution — approximately 0,05 N. F-1.3 Phenolphthalein Indicator Solution — Dissolve 0.19 of phenolphthalein in 100 of 60 percent {v/v) rectified spfrit. F-2 PROCEDURE F-2.1 Weigh 5 g of sample into a conical stoppered flask and add 50 ml of neutral ethy! alco- hol. Stopper. shake and allow to stend for 24 h , with o ional shaking. Filter the alco- holic extract, through a dry filter paper, Titrate 10 ml of the combined alcoholic extract against standard sodium hydroxide solution using phenolphthalein as indicator, Calculate the pefcentage of alcoholic acidity as sulphuric acid. F-3 CALCULATION F-3.1 Alcoholic acidity (as H,S0,). with 90 percent 24.52 AN alcohol, percent by mass (weight) = > aie rs) “DONATE TED ne 2 BDS where A = volume in ml of standard sodium hydroxide solution used in titration, N = normality of standard sodium hydioxide solution, and W = mess (weight) ing of the material taken for the test. : APPENDIX—G [Table 1, Item (viii) DETERMINATION OF GRANULARINY G-1 PROCEDURE G-1.1 Transfer about 10 g of the material to 600-micron and sieve for 2 minutes. Brush the upper Surface of the sieve and sieve again for one minute. G-1.2 The meterial shall be considered to setisfy the test if the residue left on the sieve does not exceed 0.2 percent by mass (weight). APPENDIX-H (Clause 4.1) SAMPLING OF WHEAT ATTA H-1 GENERAL REQUIREMENTS OF SAMPLING : ‘H-1.1 In diawing, preparing. storing. and handling samples, the following precautions and directions shall be observed : : H-1.2 Samples shall be taken jn 8 protected place not exposed to damp air, dust or soot, H 1.3 The sampling instrument shall be clean and ory when ised, H-1.4. Precautions shall be taken to protect the samples, the matetial being Sampled, the sampling instrument and containers for samples from adventitions contamination. H-1.5 The samples shall bs placed in clean and dry glass containers. The sample contain: ers shall bs of such a size that they are almost completely filled by the sample. H-1.6 ach container sha!l be sealed air tight after filling and marked with full details of sampling, date of sampling. batch or code number, Particulars of the consignment H-1.7 Samples shall be stored in such amanner that th not vary unduly from the normal temperature. H-1.8 Sampling shalt be done by a person agreed between the purcheser and the vendor and in the presence of the purcha:er (or his representative) and the vendor (or his representative). H-2 SCALE OF SAMPLING H-2.1 Lot — Alf the bags ina single consignment of the material drawn from a single batch } of manufacture shall constitute a-fot. If the consignment is declared to consist of different batches of manufacture. the batches shall be marked separately and the groups of bags in eath batch shall constitute separate lots. name of manufacturer and other impoitant © temperature of the material does c e n n S T T avs 1f93° OF the purpose of drawing samples for testa number of bags shall be selected at random froma fot. This number of bags in relation to the size of the agreement between the purchaser and the vendor. As 2 guide to such an agreement scale of the sample in suggested in Table 2. H-2.2 Gross Sample — For TABLE 2. MINIMUM NUMBER OF BAGS TO BE SELECTED FOR SAMPLING FROM VARIOUS SIZES OF LOTS LOT SIZE SAMPLE SIZE 2 to 8 2 9 to 27 3 28 to 64 4 65 to 125 5 128 to 216 6 217 to 343 7 344 to 512 8 513 to 729 9 730 to 1000 10 4001 to 1331 1 H-3 TEST SAMPLES AND REFEREE SAMPLES H-3.1 Preparation — To. prepare a set of test samples, draw with an appropriate sampling insttument, from the top, middle and bottom parts of each bags in the gross sample about 0.75 kg of the material and mix thoroughly to form a composite sample of that bag. Divide the composite samole of each bag into three equal parts, each being a reduced sample for that bag. A ‘set of such reduced samples, consisting of one reduced sample from each bag shall constitute the test sample. H-3.2 Three sets of test samples, each sample being not less than 0.25 kg shall be transferred ‘Ymmediately to thoroughly clean and dry containers and sealed air-tight. This shall be labelled test samples shall be sent to the purchaser and with particulars given under H-1.6. One set of test samples shall be sent to the purchaser and one to the vendor. H-3.3 Referee Samples — The third set of test samples, bearing seals of the purchaser and the vendor, shall constiiute the referee sample, to be used incase of dispute between the purchaser.and vendor. It shall be kept et aplace agreed between the purchaser and the vendor. H-4 TEST FOR ACCEPTANCE H-4.1 Examination and Tests — The purchaser may examine and test each of the reduced samples constituting atest sample separately for compliance with the requirements of this sia dard or the any prepare, for the putpose of such examination and at any stage of the progress of the exemination, acomposite sample representative of the whole lot, by mixing ali the reduced samples constituting the test sample. H-4.2 Criterion for Judgement — When the individual reduced samples ina test sample ate ‘separately examined and the results vary from one reduced sample to another, the criterion for judging the quality of the lot for the purpose of acceptance on the basis of the results obtained shall be at the discretion of the purchaser, under other wise previously agreed between the purchaser and the vendor, -9 Berns