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- What is a generally minimum pH for growth and toxin production by Clostridium botulinum and other foodborne pathogens?a) 8.5 b) 7.0 c) 6.5 d) 4.5 e) 2.0Why is it important for the commercial canning process to destroy the endospores of Clostridium botulinum?Based on only the given information, which organism is likely most resistant to thermal sterilization? Org X, Z-value of 10.0 °C Org Y, Z-value of 2.0 °C Org Z, a mesophile Org K, a psychrotroph
- If the inoculation of yeast during the process of vinegar making are not done, can we still produce vinegar? what will happen in the process?Spores and toxin-producing microorganism produce toxins need higher Aw than minimum Aw for microbial growth. How could food industry benefit from this fact?Would you be able to grow a sample obtained from a patient's wound (suspected to be infected with MRSA) on EMB? Explain.
- commercial sterilization is designed to provide enough heat to destroy the endospores of what organism? a. clostridium tetani b. stapylococcus aureus c. prions d. bacillus anthracis e. clostridium botulinumDo all microorganisms present in milk develop on the tryptone glucose yeast extract agar (TYGA)? Explain your answer.If the steps involving yeast inoculation are not done in vinegar, what would happen to the process? Would you still be able to produce vinegar?
- According to the table above, name 1 method that is least effective in killing endospores and explain why.Make the Dichotomous key for M. luteus, Bacillus subtilis, bacillus, Megaterium, Bacillus cereus, E.coli, S. Marcescens, and Enterobacter aerogenes based on catalase test, (lactose, sucrose and glucose fermentation tests) and other biochemical test for accurate identification and colony morphology.Why would the reduction in the viable norovirus be much larger in a phosphate buffer solution than in secondary wastewater effluent for PAA, whereas deactivation reduction would be similar for UV irritation for phosphate buffer and secondary effluent? Briefly explain using concepts you have learned about related to disinfection.