Answers these questions please;
1. In sterilization process, the target bacteria Z value is important because it is related to
· The slope of the thermal resistant curve
· The minimum temperature for effective treatment
· The slope of death curve
2. The retorting process of canned products with pH > 4.6 is considered safe when it achieves
· F0 > 1
· 6 log
· 12 D
3. The antimicrobial activity of acetic acid is enhanced at
· T > 5 C
· Ph > 5
· Ph < 5
4. Normally the retorting process is desired to achieve F0 in the range 6 – 10 because
· The treatment ensures total destruction of the C botulinum spores
· Heat treatment spoilage organisms have higher heat resistances than C Botulinum Spores.
· It fulfills regulatory requirements in several countries.
5. The “ Botulinum Cook” has been established as
· F0 > 6
· F0 = 3min
· 5 log
6. In brewing process, there are several cooling steps needing control measure for
· Temperature maintenance
· Cooling time
· Coolant Tank
7. When the initial microbiological population in 103 cells / g and the heat treatment achieves 6D, the probability of microbiological survival is
· 10 cells per kg of product
· 1 cell per kg of product
· No survival
8. Hexane used in oil seed crushing process
· Is not a relevant as potential contaminant source
· Maybe contaminated by chemicals such as benzene
- Shall be replaced because banned in several countries