IS 1005: Edible Maize Starch (Corn Flour)

13 Pages·1992·1.3 MB·English

by  Bureau of Indian Standards

इंटरनेट मानक
Disclosure to Promote the Right To Information
Whereas the Parliament of India has set out to provide a practical regime of right to
information for citizens to secure access to information under the control of public authorities,
in order to promote transparency and accountability in the working of every public authority,
and whereas the attached publication of the Bureau of Indian Standards is of particular interest
to the public, particularly disadvantaged communities and those engaged in the pursuit of
education and knowledge, the attached public safety standard is made available to promote the
timely dissemination of this information in an accurate manner to the public.
“जान1 का अ+धकार, जी1 का अ+धकार” “प0रा1 को छोड न’ 5 तरफ”
Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru
“The Right to Information, The Right to Live” “Step Out From the Old to the New”
IS 1005 (1992): Edible Maize Starch (Corn Flour) [FAD 16:
Foodgrains, Starches and Ready to Eat Foods]
“!ान $ एक न’ भारत का +नम-ण”
Satyanarayan Gangaram Pitroda
““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee””
“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै”
Bhartṛhari—Nītiśatakam
“Knowledge is such a treasure which cannot be stolen”

IS 1006 : 1992

(Reaffirmed199
2009
~ lfynr lftRiT 1ft~ (JfCfCfiT 3TTef) - fcrfufte
(anru
TfU8fVT)
Indian Standard
EDIBLE MAIZE STARCH ( CORN FLOUR)
SPECIFICATION
( Third Revision J
UDC 664-258
<I> BIS1992
BUR E AU OF I ND I AN S TAN DARDS
MANAK BHAVAN, 9 B AHADUR SHAH ZAFAR MARO
NEW DELHI 110002
June1992 PriceGroopJ
AMENDMENT NO.1 OcrOBER 1998
TO
IS 100S:1992 EDIBLEMAIZESTARCH(CORN
FLOUR)- SPECIFICATION
(TAintR~"isiOll)
(Pa8~3,Tablet,51No.(iv),col4I- Substitute '09ofIS4706(Part2):
1978'for·uwNore'.
(Page3,Table1,NOI~)- Delete.
(FADt7)
RepropaphyUDiI.BIS.NewDelhi.India
EdibleStarchesandStarchProductsSectionalCommittee,FAD 17
FOREWORD
ThilIndianStandard(ThirdRevision) was adopted bythe Bureau of IndianStandards,after the draft
finalized by the EdibleStarchesand Starch ProductsSectional Committee had been approved bythe
FoodandAgricultureDivisionCouncil.
Ediblemaizestarch(cornflour \ iswidelyusedinthecountryfor tbe preparationof Indian sweetalike
HALWA.,GUUBlAMUN,PH1RlNl, etc. Itservesasa thidnerinsoup andgravy. Italso findsitl usein
.\hemanufactureofbiscuits, confecticnery, bakingpowder, cosmeticsand asa bindinganddiluting&gmt
io themanufactureofpharmaceuticalproducts,such aspillsandtablets.
Thisstandardwasfirst publishedin 1957. Its tint revisionwas issuedin 1969to incorporate additional
requirementsfor starch, proteincontentandfree acidity, apartfrom modificationsoflesserimportance.In
thesecond revision in 1976,requlrementsfor acid insoluble ashwas modifiedin additiontootherchaages,
Inthethirdrevision limits have been introducedformetallicandmicrobiological impuritiesandthelimits
fortotalash havebeenreduced.
Inthe preparationof thisstandarddue consideration hasbeengiven to therelevantRules prescribedby
theGovernmentofIndiaunderthePrewnt;ollofFoodAdullerDtiollAct, 1954and the StandardsofWeighJslind
MIIJS1l1IS ( PackQgedCommodities) Rules,1977.However,this standardissubject tothe restrictionsimposed
UDderthese,whereverapplicable.
For thepurposeofdecidingwhethera particular requirementofthisstandard iscomplied with. the final
Yal~,observed or calculated,expressing the resultofa t~tor analysis, shallberoundedoff in accordance
with IS 2 : 1960 'RuJes for rounding off numerical values("lJis£d)'. The number of significant places
retainedin theroundedoffvalueshouldbe the sameasthatof thespecifiedvalue in \biastandard.
IS1005.1"2
Indian Standard
EDIBLE MAIZB STARCH ( CORN FLOUR)
SPECIFICATION
( Third Revision)
1 SCOPE 4.4 ParticleSize
This standard prescribes the requirements and When tested by the method prescribed in :Jof
themetnods ofsamplingandtestfor ediblemaize IS4706 (Part 1) : 19:8, not more than2per
starch( cornflour ). centbymassofthe material shallberetained on
75-micronISSieve andnotmoretban0-5percent
2 REFERENCES by mass shall be retained on a ISO-micron IS
The Indian Standards lilted in Annex. A are Sieve.
necessaryadjunctsto thi.standard. NOTE- Incase 75-microDand 15O-micron ISSieves
(conformilllto IS 460:1985) arenot available, BS
3 TERMINOLOGY TestSeive200,ASTM Sieve 200and TylerSieve200,
or aadBSTeltSieve 100,ASTM Sieve 100 aDd Tyler
Forthe purpose this standard, edible maize Sieve 100whichhavetheir aperturt'l within thelimit~
starch (cornflour ).hall mean starch obtained specifiedfor 75-microoaDd 150-micron IS Sieves res
from maize (Zeamays Linn.) manufactured by pectively,may beused.
thewetgrindingprocess.as distinct from maize
(corn) flour popularly known al MAKAr KA 4.5 HYlieDleColldltloD.
ATTA in Hindi. Thematerialshall be manufacturedin premises.
4 REQ.UIREMENTS andequipmentmaintainedunder hygieniccondi
tions (SIIIS 2491: 1972).
4.1 neacriptloa
f.6 The material shall also comply with the
Thematerialshallbe intheform ofafinepowder. requirementsgivenin Table 1.
Itshallnormally bewhitein colour,exceptwhen
preparedfrom yellowmaizein whichcaseit may 5 PACKING
be lightcreamy. Itshall be free from rancidity;
adulterants;insector fungus infestation; andfrom 5.1 Unless otherwiseagreedto between the pur
fermented, musty or other objectionable odours. chaser and the vendor, the material shall be
Itshall not containaddedsweetening, flavouring, packed in clean, sound and new high density
colouringagentsor any foreignmatter. polyethylene(HOPE)woven bagsor A-twilljute
bags (se«IS 1943:1964)linedwithpolyethylene.
4.2 MicroscopicAppearaace aadGraDule Themouthofeach bag shall be either machine
Size stitchedor rolled-overandhand stitched.
Whenthe materialis subjectedto themicroscopic 5.2 Thematerialmay also be packed in smaller
examination prescribed in IS 4706 ( Part 1) : containerslinedwithpaperor polyethylenewhich
1978, the starch granules shall conform to the in turnshall haveanouterprotectivepacking.
followingdescription:
Maizestarch granules are usually polygonal 6 MARKING
or roundedin shape and appear to be quite
6.1 Each container shall be suitably markedl
uniforminsize. The longestaxis rangesfrom
printedwith an indelible insoluble ink so asto
10to 30I'm (0·01 to 0·03 mm ). The hilum
give thefollowing information:
isfairly marked and is starred with fissures
butno striaeare observed; distinct polarized a) Nameofthematerial,
crossesare,however,seen.
b) Nameandaddressofthemanufacturer,
NItaOrcThEI-ranTuolelr,aacHphitoatteomeicarlYogriadpehntiofircamtiaoinzeosftatrhceh c) Batchorcodenumber,
hubeenprovidedinFig. I. d) Dateofmanufacture,
4.3 Thematerial,when examinedby themethod e) Net massofcontents,and
prescribed in6 of IS 4706 (Part 1) : 1978 shall f) Any other details required under the
befree fromdirtandother suspendedand extra Standa,.ds of W,;ghtr a"d Measur6s (PiJ&k
neous matter. agedCommodities) RuluJ977/PFA Rules.
,IS1005,1912
t.l.1 SltlruJordMarkin, 8 TESTS
8.1 Theteaft.s"shall be_cta.med out as prescribed
Detail. available with the Bureau of Indian in4.2,f.3, and incol4ofTable1.
Standards.
8.2 Q,aaUt)'01Be..
7 SAMPLING Unici'specified otherwise, pure cbemica1J shan
be employed in test. and di.tilled water (SI'
Representative sample of the material shall be IS 1070:1977)shall be used where the useof
drawn and conformity of the material to the water asareagenti.intended.
requirements of this specification shanbedeter..
mined by the method prescribed in JS4662: dNoOTDEot-CCI'Pl1uairlleicmbp,munictiaeJ..'wtbhaiclhlmafefeacntcthbeemriec.aull.tathoaft
1977. analysis.
FIG. 1 PHOTOMICROGRAPH0'MAIZESTARCH

2
181005.1992
Table 1 Reqalremeat.lorEdibleM.b.:.e.S.t.a.r.d.a.(COl'llPloar)
.(Claus,8.1)
81'No. CbaftM:ltedatlc MedlodofTeat Refto
(1) (2) (9) (4)
i) Moisture',percentby mau,Ma 12"5 CI 4 1I (
ii) Totalash (ondry b..is) percentbyma'l, 0'20 Cl 5 I ofIS 4706
MaJC r Part2):
1978
iii) Acid insolublealh (ODdrybasi.), percent 0'10 01 8
by ma",Mfa J
iv) Starch (on drybasi,). percent by ma.., '" Note
Min
v) Protein(Nx(\'25) (ondrybaalt),percent 0·60 CliO ')
by mUI,MaJC ~of IS 4706
1 (Part2):
vi) pH ofaqueeusextract 4·5to 7'0 Cl 13 J 1978
vii) Alwcoithho9li0cpearcciednittyalc(eoshporl,eplteerdcenatt bHy.SmOas,.,) 0'025 C(lPa1r5to2f)IS:41790768
Mu
viii) E. eoli Absent IS 5887(Part2):
(in25g) 19;6
ix) Sa/monilia Absent IS5887(Part3):
(in 25g) 1976
x) Arsenic,mg/kg, Max 1'1 Cl12 1
I
xi) Leadmg/kg, M~ 2'5 0113
~
xii) Copper,mg/kg, Max 30'0 Cl 14 I of 1819682587:
xiii) Zinc,mg/kg,Ma~ 50'0 Cl15 ,
I
xiv) Tin,ml/kg,Mtut 250'0 Cl16 J
xv) Mercury,mg/kg, Max )'0 Appendix H of
IS9808:1981
xvi) Cadmium,mg/kg,Max - l'S AnnexB
NOTE- Starchpercent- 100- Peoreiepercent (ondry basis) +Fat, percent (ondry balia) + Totalash
percent (on drybasi.)+Sugar,percent(ondrybasis) +crudefibre, percent (ondrybuis). '
ANNEX A
( Clause 2 )
LISTOFREFERRED INDIANSTAND4J\DS
IS No. Titl8 ISNo. Till,
460 : 1985 Specificationfor testsieves 4706 Methods of test for edible
1070 : 1977 Specification for water for ( Part 1) : 1978 starches and starch products:
general laboratoryuse (second Part 1 Physical methods (first
revision) revision)
1943 : 196~ Specification for A-twill jute 4706 Methods of test for edible
bags(,eviSld) ( Part2) : 1978 starches and starch products:
Part2Chemicalmethods(first
2491 : 1972 Code for hygienic conditions ,"';S;OIl)
for food procening units (first
r,vision) 5887 Methodsfor detectionof bac
( Part2) :'1976 teria responsible for food
..04662~ 1977 Methods of sampling of star poisoning: Part 2 Isolation,
ches andstarchproducts (firsl identificationandenumeration
"vision) ofEscherichiaeoli(first "vision)
IS1005.1912
IS No. Tilll IS No. Till,
5887 Methodsfor detectionof bae- 6287: 1985 Methods for sampling and.
(Part3) : 1976 tuia reapoDlible for food analyaia for Ingar.confection..
poisoning: Part S Isolation, ery (fird"vision)
andidentificationof S"lmo,.,lla
andShi,,'la (first"vision) 9808: 1981 Fish protemconcentrate.
ANNEX B
st
[Tabl, 1, No. (xvi) ]
METHODFORDBTERMlNA.TlONOFCADMIUM
IJ-O Sampleis digested with HNO••R.Sa., and Withhollow-cathode cadmium lamp and 10cm.
Htio.On,I•aAftUerreaacdtjiuvestmmeetnatlstaoreeaxbtoruatctepdHfro9m, swoiluth 2b2u8rn'8ernmh,eraadngefor0·2a'0ir-#Cl8./Bm.l. flame; wavelength
dithizone-CHCI,_ Cadmiumis removedby stripp B-2.2 Gla••w....
ing CHel. solution with dilute Hal and deter
minedby Atomic Absorption Spectrophotometry Thoroughlywaahed witha·oN HNO.andrinsed
at 228'8 om. . with waterv Beakers and watchglasses should be
coveredduringall operation••
8·1 REAGENTS
B·3 PROCEDURE
11-1.1NitricAcid
8-3.1 DilestioD
Low inleadandcadmium.
Weigh50·0 gsampleinto 1·5Ibeaker, Add seve-
8-1.2HydrolellPeroslde ralboilingchipsor beads, and cover. Carefully
50 percent, add25mlHNO'f cover and warm gentlywith
flame to initiatereaction.Whenreactionsubsides.
8-1.3 Citric Acid add 25ml HNOSb warm again, and continue
Monohydratefine crystal. until lOamI HNO, has been added. (Alterna
tively, add100mlHNO.allatonce.with caution,
8-1.4 TIa)'IDol Blue ladle.tor andlet itstandat roomtemperature overnight.)
Heatuntilmostnitrousozidefumeshaveevolved;
Triturate 0·1 g indicator in agate mortar with controlexcessivefrothingby coolingor quenching'
4-3ml0-05.NNaOH. Diluteto 200ml with HIO. withH.O from wash bottle. Onlysomecellulose
8-1.5 DltbizolleSolado.. and fatty materials,ifany, remainundissolved.
Toremoveany fat visible in hot solution, proceed
B-l.5.1 Conclntral,d Solution (1mg/ml ) as follows:
Prepare200ml in CHCI,. Preparefresh daily. Cool beaker in ice, and decant clear aqueous
solution from coagulatedoilsand solids through
B-1.6 CadmlalDStaDel.reISolat-JoD8 glasswoolpadinto l-Iitrebeaker. Add 100mJHID'
to 1·5.liue beaker with fat, heat, swirl vigo
B-I.6.1 StockSolution ( 1·0mg/ml ) rously to rinse fat, chin, and filter as before.
Dissolve \·000 g cadmium in 165 ml HOI in Wash funnel and glasswool pad with about
I-litre volumetric flask. Dilute to volume with 20mlH,O.
H,O.
Add 20 ml H.SO,tosample,dilute toabout 300
B-l~6.2 lnterm,diat,Solution ( 10I'g/ml) ml with H.O. and evaporate over flame until
charring begins. When charringbecomes exten
Dilute 10ml stock solution with 2 N HCl to sive,cautiously add 50percent HIOI• 1mlata
one litre. Preparejustbeforeuse. time. Let reaction lubtide before adding next
portion of oxidant, and do not addgreatertban
11-1.6.3 Working Solutio,. 1 mlat a time. Continueadditionsof HIO. until
tDoil1u0t0em0,l1w,i5th, 120N.aBndC2I0(m0l,0in·1te,r0m·5e,d1ia-t0e,aaonldutl2o-n0 fluomluetsi,onadidsincgolmoourrleeuH_aOH.eaatl vreigqourioruesdlytotroemSoOve,
JoIgCd/mi.respectively). char. Heatvigorously to expelexcessHIOI• Cool
colourless digest toroom temperature.
B-2 APPAIlA.TVS
Prepare reagent btaDk of 100ml HNO.. 20ml
B-2.1 AtomicAh.....do.Spectroplaotom eter H.SO., and aame amountlof H.Oasaddedto-
4