1、 KSKSKSKS SKSKSKS KSKSKS SKSKS KSKS SKS KS 2006 11 29 http:/www.kats.go.krKS H ISO 5542 ()KS H ISO 5542: 2006 (2011 )H ISO 5542: 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 KS
2、 () H ISO 5542: 2006(2011 ) Milk Determination of protein content Amido black dye-binding method(Rountine method) 1984 1 ISO 5542 Milk Determination of protein content Amido black dye-binding method(Routine method) , . ISO 5542 ISO/TC 34 , 1983 4 . (IDF) (AOAC International) , . 1. 1.1 . , (IDF Stan
3、dard 20) . 1.2 , , , (10.1 ) . , . , (6.4 6.7 ), “ (drift)” (control sample) (8.6.2 ). ( 6.38) “ ” . 2. . . KS H ISO 707 IDF Standard 20 Determination of the nitrogen content of milk by the Kjeldahl method 3. . 3.1 (IDF Standard 20) . “ ” “ ” . H ISO 5542: 2006 2 4. pH 2.4 . ( ) , . 5. , . . 5.1 10B
4、 (acid black 1, CI 20470) (1) , 5 %(m/m) (1) . ISO/TC 34(MSZH, ) ISO . . 5.2 . 5.2.1 1 (primary standard) . 1 000 mL 600 mL . 10B 0.900 g 2 2 1 (Na2HPO4 H2O) 2.08 g 1 (C6H8O7 H2O) 15.8 g 2 . pH 2.400.10(20 ) 15 . . 5 % 9497 %(V/V) 0.1 mL . 1 5.3.2 5.3.3 . . 5.2.2 . 7080 100200 mL . 10B (5.1) 0.90.95
5、 g( ) 2 2 1 (Na2HPO4 H2O) 2.08 g 1 (C6H8O7 H2O) 15.8 g 1 000 mL 600 mL . 5.2.1 pH 2.40 0.10(20 ) . . 2 000 mL 3 000 mL 1 200 mL 1 800 mL . 1 5.3.2 5.3.3 5.2.1 . 1 (5.2.1) (5.2.4) 1 . 5.2.1 . , 5.3.2 5.3.3 5.2.1 1 (8.5 ). 5.2.3 . 1 000 mL , 5.2.2 2 pH 2.400.10 . H ISO 5542: 2006 3 15 . 1 5.3.2 5.3.3
6、. 1 (5.2.1) (5.2.4) 1 . 5.2.1 . 5.2.2 . (IDF Standard 20) (8.6 ) . 5.2.4 . 1 000 mL 600 mL . 1 1 (Na2HPO4 H2O) 2.08 g 1 (C6H8O7 H2O) 15.8 g . . . 5.3 (5.2) . 5.3.1 10 mL 100 mL . (6.6) . 5.3.2 50 mL 100 mL . 5.3.3 20 mL 100 mL . 5.3.2 5.3.3 (8.6.2 ). 5.4 pH (6.8) . 6. . 6.1 . 6.2 6.3 (1.00.003) mL (
7、6.4 ). 6.4 (5.2) (200.02) mL . 1. (8.2 ) (8.3.1 ) 1: 20 , (8.3.3 ) 0.1 g/L (6.3 6.4) . 2. . 6.5 , , 6.6 550620 nm , 0.21.0 mm . (8.4 ). 6.7 H ISO 5542: 2006 4 6.7.1 2 (35050) g (10.1 ). ( ) ( ) . (mm) (min 1) 240 245 250 255 260 265 270 275 300 325 1 140 1 130 1 120 1 110 1 100 1 090 1 080 1 070 1 0
8、20 980 . 1.12 rn210 6 r: (mm) n: ( ) (/min) 6.7.2 ( ) . , (10.1 ). 6.8 pH 0.01 pH . 6.9 100 mL , 1 000 mL , 2 000 mL 3 000 mL 6.10 0.001 g . 7. KS H ISO 707 . 8. 8.1 2030 . 34 , . 3540 . . 20 . 1 ( ). 8.2 (6.3) (8.1) 1 mL (6.1) . . 8.3 8.3.1 (6.4) (5.2) 20 mL . 25 cm (6.5) 30 . H ISO 5542: 2006 5 .
9、8.3.2 . (6.7.1) (35050) g 2 . 8.3.3 (5.3.1) (6.6) , (6.6 ). 8.4 2.54.5 %(m/m) 40 . (IDF Standard 20) . (10.1 ). . . ( ) , . (x) (y) x y . ( , ) . 8.5 5.3.2 5.3.3 (5.2.2 ). 8.6 (calibration control) 8.6.1 (control milk sample) . (IDF Standard 20) 2 . 8.6.2 8.6.1 2 . 2 (10.1 ) . . 10 1 “ ” . (8.5 8.6.
10、1 ). 9. 9.1 (8.4) , 100 g g . “ ” (8.6.1 8.6.2 ). 9.2 100 g 0.03 g . 10. 10.1 0.070.1 %(m/m) 2 0.020.3 % (sodium azide) , 0.1 %(m/m) (6.7 ) ( .). . 0.5 %(m/m) , . H ISO 5542: 2006 6 . 10.2 (departure) . ( , ) 8.3 9.1 . (w2) (w3) (w1) . w1= 2w2 w3 11. . a) (IDF Standard 20) b) c) ( ) 153787 1 92 3(13) (02)26240114 (02)2624 01489 http:/ KSKSKSSKSKS KSKS SKS KSKS SKSKS KSKSKSKS H ISO 5542: 2006 MilkDetermination of proteincontentAmido black dye bindingmethod(Rountine method)ICS 67.100.10 Korean Agency for Technology and Standards http:/www.kats.go.kr