The impact of dry ageing vacuum-packed pork on the viability of Toxoplasma gondii tissue cysts

被引：5

作者：

Alves, Bruna Farias ^{[1
]}

Gennari, Solange Maria ^{[1
]}

Oliveira, Solange ^{[1
]}

Soares, Herbert Sousa ^{[1
]}

Conte-Junior, Carlos Adam ^{[2
]}

Dubey, Jitender Prakash ^{[3
]}

Amaku, Marcos ^{[1
,4
]}

Pena, Hilda Fatima Jesus ^{[1
]}

机构：

[1] Univ Sao Paulo, Sch Vet Med, Dept Prevent Vet Med & Anim Hlth, BR-05508270 Sao Paulo, Brazil

[2] Univ Fed Fluminense, Dept Food Technol, BR-24230340 Rio De Janeiro, Brazil

[3] ARS, Anim Parasit Dis Lab, Beltsville Agr Res Ctr, USDA, Beltsville, MD 20705 USA

[4] Univ Sao Paulo, Sch Med, BR-01246903 Sao Paulo, Brazil

来源：

FOOD MICROBIOLOGY | 2020年 / 86卷

基金：

巴西圣保罗研究基金会;

关键词：

Cat bioassay; Experimental infection; Mouse bioassay; Swine; Toxoplasmosis; HIGH PREVALENCE; INFECTIVITY; MUSCLE; MEAT; CONVERSION; CHICKENS; QUALITY; BRAZIL; BEEF; PIGS;

D O I：

10.1016/j.fm.2019.103331

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

The present study evaluated the viability of Toxoplasma gondii tissue cysts in dry-aged pork loins (m. longissimus) after 14, 21 and 28 days under controlled temperature (0 degrees C +/- 1 degrees C). The pigs (n = 9) were orally inoculated with 3,000 T. gondii oocysts. The right loin of each pig was aged for a predetermined period, and the left loin was kept unprocessed as a control. Two experiments were performed. In Experiment 1, the loins of three pigs were aged for 14 days and then bioassayed in both cats and mice. In Experiment 2, the loins of six pigs were bioassayed only in mice, and the ageing periods were 14, 21, and 28 days. Toxoplasma gondii tissue cysts remained viable in loins aged up to 14 days, as confirmed by bioassays in cats and mice. Viable T. gondii was not recovered by bioassays in mice from loins that were aged for 21 or 28 days. These results demonstrate that T. gondii remained viable in vacuum-packed dry-aged pork loins for 14 days at controlled temperature but not for 21 days or longer.

引用

页数：7

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