1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS H 1204 KS H 1204:2012 2012 12 29 http:/www.kats.go.krKS H 1204:2012 : ( ) ( ) () () () ( ) : (http:/www.standard.go.kr) : :2001 3 29 :2012 12 29 2012-0834 : : ( 02-509-7270) (http:/www.kats.go.kr). 10 5 , . KS H 1204:2012 i 1 1 2 1 2.1 .1 2.2 .1 3 1 3.1 .
2、1 3.2 1 3.3 2 3.4 .3 4 4 4.1 .4 4.2 4 4.3 .5 KS H 1204:2012 .6 KS H 1204:2012 Testing method for crude proteins content 1 ( .) . 2 2.1 2.2 3 3.1 , . . . 3.2 3.2.1 , 1 , . 10 30 , 30 60 ( , ). 3.2.2 , 0.1 mg . 3.2.3 , 96 %(m/m) . 3.2.4 , 32 40 % . 3.2.5 (boric acid), 2 4 % . 3.2.6 , CuSO4 7H2O K2SO4
3、1: 4 . KS H 1204:2012 2 : mm A (200 mL) H (300 mL) B I C J 1 L D K E L K-16 F (300 mL) M G N (N: ) 1 3.2.7 (Brunswik) , 0.2 g 0.1 g 300 mL . 3.3 % . 1 . KS H 1204:2012 3 1 % g 6 24 1.50.1 25 40 1.00.1 41 50 0.80.1 51 60 0.70.1 61 90 0.50.1 90 50 mg 3.4 3.4.1 a) (N) 2 3 mg 0.5 g 3 5 mL 30 % 1 mL . 1
4、2 . 20 mL . b) (: ) (N) 2030 mg 250 300 mL 1 2 g 20 30 mL . 100 mL 200 mL 200 mL 20 mL . c) (N) (: , ) (N) 2 3 mg 3.4.1 b) 20 mL . 3.4.2 0.05 N 10.0 mL 2 3 30 % 25 mL . 100 mL mL . 0.05 N . . Nmg3700.0mL1N05.0 = 3.4.3 (mg)100)(3700.0%)N(= ba KS H 1204:2012 4 a : 0.05 N (mL) b : 0.05 N (mL) . 2 . )%(
5、N )%( = 2 ( (100 94 %) (93 83 % ) 5.83 5.70 5.95 5.83 6.31 5.70 5.46 5.71 5.30 5.40 6.38 6.25 4 4.1 . . 4.2 4.2.1 4.2.2 4.2.3 , 0.1 mg . 4.2.4 , 96 %(m/m) . 4.2.5 , 0.1 N . 4.2.6 , H3BO3100 g( 400 g), 0.1 % 100 mL 0.1 % 100 mL 10 L 1 %( 4 %) . 4.2.7 , 20 40 % . KS H 1204:2012 5 4.2.8 (Kjeltabs), H2S
6、O4 K2SO4 1.4 2.0: 1 . 4.3 4.3.1 a) 1 g(3 25 % ) 2 . H2SO4 K2SO4 1.4 2.0: 1 . b) 12 mL . 10 % 15 mL . c) 420 45 60 ( ) ( ) . 4.3.2 4.3.3 ( , , .) 80 mL . 25 mL , . . 40 % NaOH 50 mL( 4 ) . 3 4 . ( ) . ( 0.1 N 0.2 N) . . 100(mg)1.401 )mLmLHCl(%) = FM 1.401 : M : HCl F : KS H 1204:2012 6 KS H 1204:2012
7、 . 1 1.1 KS KS , , , , . 1.2 1.2.1 a) , . KS : KS H 2005( ), KS H 2006( ), KS H 2009( ), KS H 2012 ( ),KS H 2108( ), KS H 2112( ), KS H 2119( ), KS H 2120( ), KS H 2026( ), KS H 2502( ), KS H 2503( ), KS H 3012( ), KS H 3115( ), KS H 6025( ) ISO : ISO 1871:2009(Food and feed products General guideli
8、nes for the determination of nitrogen by the Kjeldahl method), ISO 937:1978Meat and meat products Determination of nitrogen content (Reference method) : 2000( 7. , 1. , ) b) KS ISO , . 2 2.1 a) . b) “ ”, “ ” . 3 3.1 . KS H 1204:2012 7 KS ISO 153787 1 92 3(16) (02)26240114 (02)262401489 http:/ Korean Agency for Technology and Standards http:/www.kats.go.kr KS H 1204:2012 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Testing method for crude proteins content ICS 67.020
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