AOAC ERP Gluten Assays - March 2019

, 00(5 + $$6 / $87(5%$&+ - 2851$/ 2) $2$& , 17(51$7,21$/ 9 2/

1 2

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¿QHG DV PHDQ [ 6' /24ZDV YHUL¿HG E\ DQDO\]LQJ UHSOLFDWHV RI D IRRG VDPSOH ZKLFK FRQWDLQV D JOLDGLQ FRQWHQW FORVH WR VWDQGDUG QJ P/ î GLOXWLRQ IDFWRU SSP JOLDGLQ ,Q SDUDOOHO VWDQGDUG QJ P/ JOLDGLQ ZDV PHDVXUHG WLPHV 7KH YDULDWLRQ RI VWDQGDUG DEVRUEDQFH YDOXH [ 6' ZDV FRQ¿UPHG 7KH PHDQ YDOXH ± [ 6' ZDV IRXQG VLJQL¿FDQWO\ GLIIHUHQW IURP ]HUR LQ FRQVLGHUDWLRQ RI WKH &9 7KH FRXUVH RI WKH FDOLEUDWLRQ FXUYH LV VKRZQ LQ WKH 4XDOLW\ $VVXUDQFH &HUWL¿FDWH $SSHQGL[ HQFORVHG LQ WKH WHVW NLW ,Q FRPSDULVRQ ZLWK WKH FHUWL¿FDWH KLJKHU YDOXHV RI WKH DEVRUEDQFH DW QP HVSHFLDOO\ IRU WKH ]HUR FDOLEUDWRU PD\ EH D UHVXOW RI LQVXI¿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

WR HDFK ZHOO PL[ V PDQXDOO\ DQG LQFXEDWH IRU PLQ DW URRP WHPSHUDWXUH ± ƒ& ± ƒ) 'XPS WKH OLTXLG RXW RI WKH ZHOOV WKHQ WDS WKH PLFURZHOO KROGHU XSVLGH GRZQ YLJRURXVO\ WKUHH WLPHV LQ D URZ DJDLQVW DEVRUEHQW SDSHU WR HQVXUH FRPSOHWH UHPRYDO RI OLTXLG IURP WKH ZHOOV )LOO DOO WKH ZHOOV ZLWK —/ GLOXWHG ZDVKLQJ EXIIHU DQG GXPS RXW WKH OLTXLG DJDLQ 5HSHDW WZR PRUH WLPHV $GG —/ RI VXEVWUDWH DQG —/ RI FKURPRJHQ WR HDFK ZHOO 0L[ JHQWO\ E\ VKDNLQJ WKH SODWH V PDQXDOO\ DQG LQFXEDWH IRU PLQ DW URRP WHPSHUDWXUH ± ƒ& ± ƒ) LQ WKH GDUN 3RVLWLYH ZHOOV VKRXOG GHYHORS D EOXH FRORU LQGLFDWLQJ WKH SUHVHQFH RI SURODPLQV $GG —/ RI WKH VWRS UHDJHQW WR HDFK ZHOO 0L[ JHQWO\ E\ VKDNLQJ WKH SODWH PDQXDOO\ 7KH FRORU RI SRVLWLYH SURODPLQ FRQWDLQLQJ ZHOOV FKDQJHV IURP EOXH WR \HOORZ

, 5HDGLQJ

5HDG WKH UHVXOWV ZLWK D PLFURWLWHU SODWH UHDGHU 0HDVXUH WKH DEVRUEDQFH DW QP 5HDG ZLWKLQ PLQ DJDLQVW DLU DIWHU DGGLWLRQ RI VWRS VROXWLRQ

- &DOFXODWLRQV

'HWHUPLQH WKH JOLDGLQ FRQWHQW RI HDFK VHW RI GXSOLFDWH VDPSOH ZHOOV E\ UHIHUHQFH WR D FDOLEUDWLRQ FXUYH PHDVXUHG E\ WKH DFWXDO WHVW UXQ XWLOL]LQJ VSHFLDO FRPSXWHU VRIWZDUH RU VHPLORJDULWKPLF SDSHU SORW DEVRUEDQFH RI VWDQGDUGV OLQHDU VFDOH YHUVXV JOLDGLQ FRQWHQW RI VWDQGDUGV ORJDULWKPLF VFDOH 7KH VWDQGDUG FDOLEUDWLRQ FXUYH RI WKH (/,6$ FRYHUV D UDQJH IURP WR PJ JOLDGLQ NJ VDPSOH ZKLFK FRUUHVSRQGV WR D UDQJH RI ±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

7DEOH 6WDWLVWLFDO UHVXOWV H[SUHVVHG LQ PJ NJ JOLDGLQ RI FROODERUDWLYH WHVWV FDUULHG RXW DW WKH LQWHUQDWLRQDO OHYHO LQ E\ :*3$7 D

1R RI UHSOLFDWHV 6XP>Q / @

2YHUDOO PHDQ RI DOO GDWD JUDQG PHDQ [

5HSHDWDELOLW\ UHODWLYH 6' 56' U

5HSHDWLELOLW\ 6' V U

5HSURGXFLELOLW\ 6' V 5

5HSURGXFLELOLW\ 6' 56' 5

6DPSOH ,' 1R RI ODEV 3

D 7ZHQW\ ODERUDWRULHV SDUWLFLSDWHG HDFK SHUIRUPLQJ WZR UHSOLFDWHV

Made with FlippingBook - professional solution for displaying marketing and sales documents online