Pre-treatment of thermoduric spores in CO2 modified atmosphere and their survivability during food extrusion
| dc.creator | Marcos FRAIHA | |
| dc.creator | Antonio Carlos de Oliveira FERRAZ | |
| dc.creator | João Domingos BIAGI | |
| dc.date | 2011 | |
| dc.date.accessioned | 2026-07-07T04:18:13Z | |
| dc.description | The aim of this experiment was to evaluate how susceptible spores become to mechanical damage during food extrusion after being submitted to CO 2 . B. stearothermophilus spores sowed to corn and soy mix were submitted to 99% CO 2 for 10 days and extruded in a single-screw extruder. The treatments were: T1 - spore-containing samples, extruded at screw rotational speed of 65 rpm and barrel wall temperature of 80 °C; T2 - as T1, except for screw rotational speed of 150 rpm; and T3 - as T2, except that samples were submitted to the modified atmosphere. The results for cell viability, minimum and maximum residence times, and static pressure were T1 - 19.90 ± 3.24%, 123.3 ± 14.50 seconds; 203.3 ± 14.05 seconds; 2.217 ± 62 kPa; T2 - 21.42 ± 8.24%, 70.00 ± 5.77 seconds; 170.00 ± 4.67 seconds; 2.310 ± 107 kPa; and T3 - 11.06 ± 2.46%, 86.00 ± 7.23 seconds; 186.00 ± 7.50 seconds; 2.403 ± 93 kPa, respectively. It was concluded that the extrusion process did reduce the cell count. However, screw rotational speed variation or CO 2 pre-treatment did not affect cell viability. | |
| dc.format | application/pdf | |
| dc.identifier | 0101-2061 | |
| dc.identifier | https://www.redalyc.org/articulo.oa?id=395940104024 | |
| dc.identifier.uri | http://hdl.handle.net/123456789/457106 | |
| dc.language | en | |
| dc.publisher | Sociedade Brasileira de Ciência e Tecnologia de Alimentos | |
| dc.relation | http://www.redalyc.org/revista.oa?id=3959 | |
| dc.rights | Ciência e Tecnologia de Alimentos | |
| dc.source | Ciência e Tecnologia de Alimentos (Brasil) Num.1 Vol.31 | |
| dc.subject | Agrociencias | |
| dc.title | Pre-treatment of thermoduric spores in CO2 modified atmosphere and their survivability during food extrusion | |
| dc.type | artículo científico |