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Occurrence of mycootoxins in alfalfa (Medicago sativa L.), sorghum [Sorghum bicolor (L.) Moench], and grass (Cenchrus ciliaris L.) retailed in the state of Nuevo León, México Agrociencia
Huerta-Treviño,Alejandra; Dávila-Aviña,Jorge E.; Sánchez,Eduardo; Heredia,Norma; García,Santos.
Abstract Mycotoxins are secondary metabolites produced by specific filamentous fungi that are common contaminants of agricultural commodities. These compounds are toxic to humans and animals, and they are a health problem worldwide. Mycotoxin-containing feeds can cause serious diseases in farm animals and substantial economic losses. Therefore, the objective of this study was to determine the occurrence and levels of six mycotoxins in three types of forage at retail in the state of Nuevo León, México. The hypothesis was that all types of forages were contaminated with at least one of the six mycotoxins analyzed. One hundred and twenty samples of alfalfa (Medicago sativa L.), sorghum [Sorghum bicolor (L.) Moench], and grass (Cenchrus ciliaris L.) used for...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mycotoxins; Forages; Aflatoxin; Fumonisin; Ochratoxin.
Ano: 2016 URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952016000700825
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Cross protection by heat and cold shock to lethal temperatures in Clostridium perfringens BJM
García,Santos; Limón,Julio C.; Heredia,Norma L..
A heat shock pre-treatment of Clostridium perfringens provides protection against lethality from subsequent exposure to cold shock and vice versa. Heat shocked cells were more cold tolerant (one log reduction in 65 min) than control cells (one log reduction in 34 min). On the other hand, cold-shocked cells were more thermotolerant (D55= 17 min) than the control (D55= 6.5 min). The addition of chloramphenicol (an inhibitor of protein synthesis) in the experiments indicates that synthesis of new proteins was necessary for cross protection between both treatments.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Clostridium perfringens; Heat shock; Cold shock.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822001000200007
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