東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

Effect of irradiation and antimicrob...

Zhu, Meijun.

FindBook

Google Book

Amazon

博客來

Effect of irradiation and antimicrobials on the growth and survival of Listeria monocytogenes and quality of ready-to-eat turkey meat products.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Effect of irradiation and antimicrobials on the growth and survival of Listeria monocytogenes and quality of ready-to-eat turkey meat products./
作者:	Zhu, Meijun.
面頁冊數:	204 p.
附註:	Source: Dissertation Abstracts International, Volume: 65-12, Section: B, page: 6110.
Contained By:	Dissertation Abstracts International65-12B.
標題:	Agriculture, Food Science and Technology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3158392
ISBN:	0496908235

Effect of irradiation and antimicrobials on the growth and survival of Listeria monocytogenes and quality of ready-to-eat turkey meat products.
Zhu, Meijun.

Effect of irradiation and antimicrobials on the growth and survival of Listeria monocytogenes and quality of ready-to-eat turkey meat products. - 204 p.

Source: Dissertation Abstracts International, Volume: 65-12, Section: B, page: 6110.

Thesis (Ph.D.)--Iowa State University, 2004.

This dissertation investigated the effect of irradiation and antimicrobials on the quality and survival of L. monocytogenes, a significant safety concern, in RTE turkey meat products. Results showed that dietary vitamin E was effective in reducing the number of L. monocytogenes carried by live turkeys, a source of L. monocytogenes contamination in RTE products. Irradiation was very effective in eliminating L. monocytogenes in both turkey breast rolls and hams. However, irradiation also caused quality changes. A dose of 2.0 kGy irradiation produced significant off-odor, mainly sulfur-related odor/flavor, in vacuum-packaged RTE turkey ham and rolls. Thus, only low dose irradiation is recommended. However, low-dose irradiation allowed some L. monocytogenes to survive during irradiation. Antimicrobial agents were formulated into RTE turkey rolls and hams as an additional hurdle to suppress the growth of L. monocytogenes that survived low-dose irradiation. Antimicrobials, including 0.1% potassium benzoate (PB), 2% sodium lactate (SL), and 0.1% sodium diacetate (SDA) were used singly or in combinations to assess their effectiveness in inhibiting the growth of L. monocytogenes in RTE meat products following low-dose irradiation. Results showed that for RTE turkey meats formulated with 0.1% PB + 2% SL or 2% SL + 0.1% SDA, 1.0 kGy irradiation was effective in suppressing the growth of L. monocytogenes for about six weeks at 4°C, and 2.0 kGy irradiation was listeriostatic during a 42-day refrigerated storage period. For RTE turkey meat formulated with three antimicrobials in combination, 0.1% PB + 2% SL + 0.1% SDA, 1.0 kGy irradiation was listeriostatic. Including 2% SL in formulation, however, slightly affected the texture and color values of turkey breast rolls, and the addition of PB in RTE turkey meats produced a high amount of benzene after irradiation. Considering their antilistenal activity and their effects on quality, including 2% SL plus 0.1% SDA in formulation in combination with 1.0- or 2.0 kGy-irradiation was a promising technology to ensure the safety of RTE turkey ham and breast rolls from L. monocytogenes.

ISBN: 0496908235Subjects--Topical Terms:

1017813
Agriculture, Food Science and Technology.

Effect of irradiation and antimicrobials on the growth and survival of Listeria monocytogenes and quality of ready-to-eat turkey meat products.
LDR:03127nmm 2200289 4500 001 1840684
005 20050802071633.5
008 130614s2004 eng d
020 $a 0496908235
035 $a (UnM)AAI3158392
035 $a AAI3158392
040 $a UnM $c UnM
100 1 $a Zhu, Meijun. $3 1929009
245 1 0 $a Effect of irradiation and antimicrobials on the growth and survival of Listeria monocytogenes and quality of ready-to-eat turkey meat products.
300 $a 204 p.
500 $a Source: Dissertation Abstracts International, Volume: 65-12, Section: B, page: 6110.
500 $a Major Professor: Dong U. Ahn.
502 $a Thesis (Ph.D.)--Iowa State University, 2004.
520 $a This dissertation investigated the effect of irradiation and antimicrobials on the quality and survival of L. monocytogenes, a significant safety concern, in RTE turkey meat products. Results showed that dietary vitamin E was effective in reducing the number of L. monocytogenes carried by live turkeys, a source of L. monocytogenes contamination in RTE products. Irradiation was very effective in eliminating L. monocytogenes in both turkey breast rolls and hams. However, irradiation also caused quality changes. A dose of 2.0 kGy irradiation produced significant off-odor, mainly sulfur-related odor/flavor, in vacuum-packaged RTE turkey ham and rolls. Thus, only low dose irradiation is recommended. However, low-dose irradiation allowed some L. monocytogenes to survive during irradiation. Antimicrobial agents were formulated into RTE turkey rolls and hams as an additional hurdle to suppress the growth of L. monocytogenes that survived low-dose irradiation. Antimicrobials, including 0.1% potassium benzoate (PB), 2% sodium lactate (SL), and 0.1% sodium diacetate (SDA) were used singly or in combinations to assess their effectiveness in inhibiting the growth of L. monocytogenes in RTE meat products following low-dose irradiation. Results showed that for RTE turkey meats formulated with 0.1% PB + 2% SL or 2% SL + 0.1% SDA, 1.0 kGy irradiation was effective in suppressing the growth of L. monocytogenes for about six weeks at 4°C, and 2.0 kGy irradiation was listeriostatic during a 42-day refrigerated storage period. For RTE turkey meat formulated with three antimicrobials in combination, 0.1% PB + 2% SL + 0.1% SDA, 1.0 kGy irradiation was listeriostatic. Including 2% SL in formulation, however, slightly affected the texture and color values of turkey breast rolls, and the addition of PB in RTE turkey meats produced a high amount of benzene after irradiation. Considering their antilistenal activity and their effects on quality, including 2% SL plus 0.1% SDA in formulation in combination with 1.0- or 2.0 kGy-irradiation was a promising technology to ensure the safety of RTE turkey ham and breast rolls from L. monocytogenes.
590 $a School code: 0097.
650 4 $a Agriculture, Food Science and Technology. $3 1017813
650 4 $a Biology, Microbiology. $3 1017734
650 4 $a Engineering, Agricultural. $3 1019504
690 $a 0359
690 $a 0410
690 $a 0539
710 2 0 $a Iowa State University. $3 1017855
773 0 $t Dissertation Abstracts International $g 65-12B.
790 1 0 $a Ahn, Dong U., $e advisor
790 $a 0097
791 $a Ph.D.
792 $a 2004
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3158392