ICS 65. 120 B 46
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GB/T 20194-2006/ISO 6493:2000
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Animal feeding stuffs-Determination of starch content-
Polarimetric method
(ISO 6493:2000??IDT)
2006-02-24·??? 2006-07-01??
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GB/T 20194-2006/ISO 6493:2000
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±?±ê????????ISO 6493:2000((???????????í·??????????¨?? ????·¨?·(???°?)
?±????????±?±ê???????????±à????????: ?? ?°±??ú??±ê??±???????°±?±ê??±; ?? ??С?????°.?±?ú??×÷?С???????°???±;
?? ??GB/T 6682-1992??·?????é??????????????é·?·¨?·(neq ISO 3696:1987)?ú????ú??±ê ?????????ISO 3696;
?? ??GB/T 6003. 1-1997???????±à??????é??·(eqv ISO 3310-1:1990)?ú????ú??±ê????? ????ISO 3310-1;
?? ??GB/T 20195-2006?????????? ???ù????±??·(ISO 6498:1998,IDT)?ú????ú??±ê????? ????ISO 6498;
?? ?ù??GB/T 1. 1?????¨??????2????????????????ISO 6497:2002?à?????GB/T 14699. 1- 2005((???? ???ù?·;
?? ??????ú??±ê?????? ±?±ê??????A?????B?×????????
±?±ê????ú??±ê??????í???á?á???? ±?±ê?????ú?????¤?±ê??????????á?é????
±?±ê???????λ:?ú???????????à???ì?é????(????)?? ±?±ê??÷???????:????????????????С???????·????????????????ì??
GB/T 20194-2006/ISO 6493:2000
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·?Χ
±?±ê????¨?????????í·??????????????¨·¨
±?·?·¨??????????????·??????????????????????????????40%???????í·??????????????????ú
??????í???í?????????????????ù????????????ó???ú????????????????????????ú????????×?ù?????ó???? ????????·¨???¨?í·????? ????í·?????40%?????????±?·¨???¨?í·?????????????????×?í·?HylonVII
????:???í?ú????????????????í·??????¨?á??????????
2 ??·???????????
???????????????????±?±ê????????????±?±ê?????????·?????????????????????????ó?ù?? ????????(??°ü?¨?±?ó??????)?ò????°??ù????????±?±ê?????????????ù??±?±ê?????Э?é???÷·????? ??·????????Щ??????×???°?±???·????????????????????????×???°?±???????±?±ê?
GB/T 6003.1-1997 ?????±à??????é?(eqv ISO 3310-1:1990) GB/T 6682-1992 ·?????é??????????????é·?·¨(neq ISO 3696:1987)
GB/T 14699. 1-2005???? ???ù(ISO 6497:2002,IDT) GB/T 20195-2006???????? ???ù????±?(ISO 6498:1998,IDT)
3 ???????¨??
???????????¨????????±?±ê???
?í·? starch
??a-1,4?ü??????????????λ????·???¤??(????í·?)??/?ò??a-1,4?ü??????????????λ??
a-1,6·???¤??(????í·?)×é?????ì?????à???? 3.2
?í·???$ starch content
??ù??±?±ê????¨????????40%????????·?×????°??·?×?·????ú????????·????? ?:?í·??????????????·???????±í?
??í
???ù??????á·??????????????í·?????????·?????????¨?????????×?????????У???ò????40%
???????????????°????á???í?ó??????????????????? ????????????У?????????????????í·? ??????
5 ????
??·??í?????¨?????·????????? 5. 1?:?GB/T 6682-1992?????¨??????????? 5.2 ????(C2H5OH),40?·(????·???)??
5.3 ?×?ù?ì??96%???????(????·???):P(?×?ù?ì)=1 g/L
GB/T 20194-2006/1S0 6493:2000
5.4 ???á??c(HCI)=0.31 mol/L:???×?ù?ì???????????. 100 mol/L??????????????¨???á?????
10 mL???á????????31. 0 mL???. 1 ml?????????? ????:???á???????????ò????????????????????í·????¨??? 5.5 ???á??c(HCD=7.73 mol/I??
5.6 ?????????Carrez???????????·?·¨????:
5.6. 1 ???ú?è????(II)???,c[K,Fe(CN)s]=0. 25 mol/I:??1 L???????????106 g??????ú?è?? ??[K,Fe(CN)6?¤3H,0]????????¨??????????
5.6.2 ???áп??0. 5 mol/I?????á?????????Zn (CH,COO)z]=1 mol/L:??1 L?????????219. 5 g???á п??(ZnCH, COO)z?¤3H,0 ?ó??30 g±ù???á?????????????¨??????????
5.7?á?????(CjzH20ii),p=100.0 g/I??
6???÷?è±?
??é?????????÷??
61·????ì?:??????¤mg. 6.2 pH??:??????. 1pH??λ
6.3·???:?±???????????????±???·??? ????:??????????±???·??????ò?í·???t???¨????????
6.4 ??????;??????.010?????????200 mm?¤???????? ???¨?¤589.3 nm??(??D??)???¨???????????????¤????????¨???????????¨???ò?è??????à???
????±í??? ???????????????¨?????à?±?????????????????????????????????????????????????
???????????á?????((5.7)У????±??20???10C????200 mm?????????¨??????á?????????????
?13. 30% 6.5 ???¨????
6.6 ?????÷?? 6.7
GBT 20194-2006 饲料中淀粉含量的测定 旋光法.pdf
