KS H ISO 9622-2006 Whole milk-Determination of milkfat protein and lactose content-Guidance on the operation of mid-infrared instruments 《全乳 乳脂肪、蛋白质和乳糖含量的测定 中红外设备操作指南》.pdf

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KS H ISO 9622-2006 Whole milk-Determination of milkfat protein and lactose content-Guidance on the operation of mid-infrared instruments 《全乳 乳脂肪、蛋白质和乳糖含量的测定 中红外设备操作指南》.pdf_第1页
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1、KSKSKSKS SKSKSKS KSKSKS SKSKS KSKS SKS KS 2006 11 29 http:/www.kats.go.krKS H ISO 9622, ( ) KS H ISO 9622: 2006 (2011 ) H ISO 9622: 2006 : ( ) ( ) ( ) ( ) : (http:/www.standard.go.kr) : : 2001 12 22 : 2006 11 29 : 2011 12 29 2011-0652 : : ( 02-509-7273) (http:/www.kats.go.kr). 10 5 , . ICS 67.100.10

2、 KS , ( ) H ISO 9622: 2006(2011 ) Whole milk Determination of milkfat, protein and lactose content Guidance on the operation of mid-infrared instruments 1999 1 ISO 9622 Whole milk Determination of milkfat, protein and lactose content Guidance on the operation of mid-infrared instruments . ISO 9622 I

3、SO/TC 34 (SC5), (IDF) (AOAC International) , . A , B C . 1. , , . 1. “ ” 5. . , ( , , ) . 2. . . , . , , . (7. ) ( , , ) . 2. . . KS H ISO 1211 ( ) ISO 5765 1 Dried milk, dried ice-mixes and processed cheese Determination of lactose content Part 1: Enzymatic method utilizing the glucose moiety of th

4、e lactose ISO 5765 2 Dried milk, dried ice-mixes and processed cheese Determination of lactose content Part 2: Enzymatic method utilizing the galactose moiety of the lactose ISO 8968 1 Milk Determination of nitrogen content Part 1: Kjeldahl method ISO 8968 2 Milk Determination of nitrogen content Pa

5、rt 2: Block-digestion method(Marco method) ISO 8968 4 Milk Determination of nitrogen content Part 4: Determination of non-protein nitrgen content ISO 8968 5 Milk Determination of nitrogen content Part 5: Determination of protein-nitrogen content H ISO 9622: 2006 2 3. . 3.1 , , . 3.2 , , % (m/m) . 4.

6、 , . 5.7 m( A .) 3.5 m( B .) (CH) 6.5 m (amide) 9.6 m (OH) , . 0.1 % 0.03 % 0.020.06 % . . 5. ( ) 2 2 , , , (interferogram) . . , 4. . 6. 6.1 6.1.1 (linearity) / / . , , / / . / A . / . 1 . a) 5.7 m( A) 3.5 m( B) , 8 % . b) 6.5 m . , . 5.5 % . c) 9.6 m 60 g/L 1 (lactose monohydrate) H ISO 9622: 2006

7、 3 . 1 ( , , 6 % ) (: ) 100 100 1.0 80 20 0.8 60 40 0.6 40 60 0.4 20 80 0.2 100 100 0.0 0 . . 3 . y = bx a (residuals) i . i= yi (axi b) (x ) i(y ) . . . /s = ( max min)/(smax smin) max min: s max s min: / s 0.01 0.02 . . . . . 6.1.2 1 , 1 % . , , , , , 20 , . E . )()(2221WMWME= 100 M1: M2: H ISO 96

8、22: 2006 4 W2: 99 % . 6.1.3 6.1.3.1 2 , , . 2 3.5 % 0.05 % . 3.5 % 0.014 3 . . . 6.1.3.2( 2 ) . 6.1.3.2 , . . . . d 0.750.85 m , 1.41.5 m d(0.9) d(0.9) 90 % d . A B . 6.1.4 . ( ) . 1 . 6.2 6.2.1 , . , . , . . - 6.5 m , . 3.5 m , . , . 3 , B . 0 , 0.02 . . H ISO 9622: 2006 5 . 6.2.2 6.2.2.1 ( ) 5.7 m

9、 , 3.5 m . ( , ) . 6.2.2.2 . 3.5 % , BDI 100 g 1 5.7 m( A) 0.022 %, 3.5 m( B) 0.006 % . 6.2.2.3 7.0 % , (7. ) . . 6.2.2.4 , . . . 6.2.3 6.2.3.1 (NPN) (IR) , (NPN) . (ISO 8968 1 ISO 8968 2 ) (ISO 8968 5 ) . , NPN . NPN , (TN) . NPN (TN) , . TN NPN , NPN/TN . . 6.2.3.2 6.5 m . . 6.2.3.3 BDI , 100 g 1

10、3.0 % 6.5 m 0.013 % . 6.2.4 (IR) . , . H ISO 9622: 2006 6 . 7. 7.1 , . , , . , KS H ISO 1211, ISO 8968 1 , 2 , 4 5 ISO 5765 1 2 . (Gerber) , (Amido Black) . . 7.2 . 7.2 , 7.2.1 . , 2.55.0 % , 2.54.0 % . 7.0 % 5.0 % . 15 , 50 . . , mL 106 . , , . 7.2.2 yi 2 , xi 3 . 7.2.3 x y , (x y) . . y = bx a , (

11、syx) . syx 0.06 % . . , . , . a) . “ ” , . C . b) 68 . c) , , , 1012 ( C ). 7.3 , H ISO 9622: 2006 7 , . (4 5) . (12.3 ), . , . 7.2 3 . ( , , ) . 8. , KS H ISO 707 . . 9. , . 5 % . . . 0.02 . 10. , . ( ) (401) . 11. 11.1 , . , . 11.2 . 4 . (UHT) 2 . . 11.3 . 11.4 11.4.1 , . a) (m0) . b) ( 1 ). m0 m0

12、Mc( ) 99 % “ (confidence belt)” m0Ic( ) 99 % “ (individual line)” H ISO 9622: 2006 8 c) (m) . d) . Ic . Mc . e) sr Ic Mc . sR (11.2 ).: sR = 2sr sR Ic . Ic = tsR t: (%) t 99 2.58 98 2.33 95 1.96 90 1.65 80 1.28 99 % . sr= 0.014 % Ic . Ic= 2.582sr= 5.160.014 = 0.07 % Mc Ic . Mc= Ic /n n: . , . 11.4.2 . a) 100 . b) ( , 11.5 ) . c) t Ic Mc . . Ic Mc 99 %

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