2009,23 (2) :279 284 Journal of Nuclear Agricultural Sciences 279 :100028551 (2009) 022279206 1 1 2 1 2 2 1 2 2 1 1 (11, 210014 ; 21, 100193) :, :4kGy 92 %;6kGy 99 %, 8kGy,;10kGy 4 4 10kGy, () 17, ;,, 4 10kGy : ; ; ; THE IRRADIATION EFFECTS AND PROCESSING DOSE FOR PET FOODS DECONTAMINATION ZHU Jia2ting 1 FENG Min 1 HA Yi2ming 2 LIU Chun2quan 1 GAO Mei2xu 2 LI Shu2rong 2 ZHAO Yong2fu 1 WANG Feng 2 ZHOU Hong2jie 2 J IN Yu2dong 1 J I Ping 1 ( Institute for Application of Atomic Energy, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu 210014 ; Institute of Agro2Food Science & Technology, Chinese Academy of Agricultural Sciences, Beijing 100193) Abstract : The applied dose range of irradiation processing of 4 kinds of pet foods had been studied. More than 92 % microorganisms was inactive at the irradiation dose of 4kGy, while more than 99 % was inactive at 6kGy. The microorganism load of irradiated pet food by 8kGy met the requirement of national standards. The 10kGy irradiation could sterilize the treated pet food. Salmonella had not been checked in irradiated or unirradiated samples. When irradiation dose ranged 4 10kGy, there was no significant difference on contents of moisture, fat, protein, coarse fiber, carbohydrates,minerals ( not including Calcium) or amino acids between irradiated and un2irradiated pet food. There was also no significant change on sensory quality of irradiated samples within this dose range. It is concluded that the recommended irradiation processing dose range for pet foods is 4 10kGy. Key words :pet foods ; irradiation decontamination ; microorganism ; nutrition quality,,,,4, 2007 400 ;6, :2008206222 :2008207225 :(200711832T2469) : (19552),,,, Tel : 025 84391942 ; E2mail : zjtlw @1631com
280 23 7 % ; 10 [1 ],, 45, 100, 5 %, [2 ],, ;, [3 ],,,, GBΠT 13192-2006 ; GBΠT 13091-2002 11312 GB 6435-86,GB 6438-86 11313, GB 6433-94 ; GB 6432-94 ; GB 18246-2000 ; GB 6434-94 ;GBΠT 14771-1993 ; GBΠT 6436-92 ; GBΠT 6437-92 ; GBΠT 13885-92 114,,, 115 SAS 2 1 111 4,, ;, ;,,, 60gΠ 112, 60 Co, 0 (Ck) 4 6 8 10kGy, Ag 2 Cr 2 O 7 1 30, (10 35 ) 113 11311 GBΠT 13093-2006 ; GBΠT 478913-2003 ; 211 4,,, 1, 213 10 5 cfuπg 214 10 4 MPNΠ100g 219 10 4 cfuπg ; 4kGy, 117 10 4 cfuπg 913 10 2 MPNΠ100g 60cfuΠg, 9216 % 9611 % 9918 % ; 6kGy, 9918 %;8kGy, ;10kGy 3 ( ), :4kGy, 20cfuΠg, ;6kGy 4 212 21211, ( 2),3 ( 20 %), ( 11 %), ( 15 %) 2,,
2 281 microorganisms total bacterial count (cfuπg) coliform bacteria (MPNΠ100g) : N 1 Table 1 The effects of irradiation on decontamination of porkhide roll 213 10 5 117 10 4 316 10 2 50 N 214 10 4 913 10 2 90 N N salmonella (cfuπg) N N N N N mold(cfuπg) Note : N means no microorganism had been tested out. 219 10 4 60 10 N N 2 Table 2 The effect of irradiation on the content of moisture in pet foods ( %) sample chicken breast fillet dental bone and meaty chicken dental bone 191755 01011 191580 01063 191562 01021 191678 01066 191510 01064 151289 01010 151215 01026 151175 01001 151263 01016 151276 01045 111238 01003 111414 01071 111227 01074 111399 01136 111344 01037, 21212 ( 3),4 10kGy, ;, ;,,10kGy,3 item fat protein 3 Table 3 The effect of irradiation on nutritions in pet food ( %) 3160 01141 3155 01071 3165 01071 3170 01000 3155 01071 013383 6813 01212 68155 01071 6812 01212 6815 01000 6817 01212 013383 crude fiber < 011 < 011 < 011 < 011 < 011 Π carbohydrate 21213 4, 4 10kGy, 3,,, ; 6kGy, ;4kGy, ;,, 21214 5,, 17 13 ( 4180 01000 4120 01000 4175 01212 4140 01000 4145 01354 017587 ) ; ;,,,, [4 ], [5 ]
282 23 item Ca P Na K Mg Fe Zn Cu Mn 4 ( ) Table 4 The effect of irradiation on microelements in pet food (mgπkg) 14315 1415 133 815 133 1315 129 410 127 710 010010 7399 106 6687 722 7248 149 6764 186 7135 7 013989 6401 88 6364 358 6917 551 6310 206 6373 1 015832 12608 51 12423 986 12943 690 12709 475 13025 160 019530 916 210 915 4710 943 310 928 4110 930 2115 019512 158 3715 160 5815 159 215 153 2110 156 415 019012 1613 65 % 1514 1145 1615 0105 1513 0170 1518 0115 014895 01920 01030 01945 01085 01945 01175 01910 01030 01930 01070 012541 11175 01035 11130 01210 01995 01125 11165 01265 01915 01155 015966 item Asp Thr Ser Glu Gly Ala Cys Val Met Ile Leu Tyr Phe His Lys Arg Pro 5 Table 5 The effect of irradiation on amino acids in pet food (gπ100g) 51263 01135 51220 01031 51151 01015 51180 01011 51191 01118 019578 21449 01012 21466 01137 21507 01045 21452 01030 21406 01125 019578 21048 01083 21029 01203 21130 01062 21042 01047 21008 01089 019263 101026 01178 91929 01132 91774 01031 91790 01033 91961 01193 014145 21984 01128 21767 01012 21805 01038 21812 01058 21853 01062 016351 31837 01104 31703 01049 31674 01001 31655 01006 31703 01011 012553 01107 01011 01102 01000 01102 01000 01106 01004 01094 01016 016488 41211 01003 31849 01193 31833 01092 31921 01033 41038 01043 015986 21134 01078 21037 01082 21036 01049 21040 01047 21036 01021 017672 31256 01103 31127 01118 31113 01060 31171 01017 31247 01088 018837 51285 01056 51233 01077 51240 01070 51250 01051 51190 01116 018845 11760 01034 11361 01251 11408 01023 11245 01015 11610 01003 010703 21849 01060 21995 01040 21970 01049 31023 01023 31089 01043 013834 41091 01031 31989 01073 31972 01016 31946 01006 31901 01054 011053 61805 01152 61558 01041 61648 01046 61654 01111 61414 01094 016794 41693 01008 41419 01003 41406 01150 41369 01083 41459 01012 012050 11053 01020 11328 01058 11414 01080 11372 01025 11364 01052 012187 21215 6,,, 4kGy,,, ;, (6kGy) ( CK) 119 %,, samples chicken breast fillet dental bone and meaty chicken dental bone 6 Table 6 The effect of irradiation on the content of ashes in pet food ( %) 51137 01040 51156 01017 5113 01002 51156 01017 51198 01026 019752 41172 01018 41204 01061 41252 01056 41199 01047 41217 01107 010040 51413 01035 51621 01076 51941 01533 51691 01020 5136 01009 018702 213 ( ) 3
2 283 ( 1), 1,, 4 10kGy,, ;4 6kGy,,8kGy,,,, 30,,, ;,10kGy, 1 Fig. 1 The effect of irradiation on pet 3 foods visual quality, Note :upper samples are porkhide rolls Lower samples are chicken breast fillets,, ; 4 10kGy 4, 4,,,,,,,, [6 ] 11 % 20 %,,,,,,,,,, 7kGy, 012 %, [7 ],,,, (100kGy),;,014 %, [7 ] Olson, [8,9 ],,,, 17, 13,, ( ) [10 ],,,,,
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