Question from a student

Q:

From: HHHHHHHHH
Sent: Tuesday, 24 April 2018 4:48 PM
To: HS Kwan, Prof. (SLS) <hskwan@eservices.cuhk.edu.hk>
Subject: Questions from a FNSC3180 student

Dear Prof Kwan,

I am a student from FNSC3180, I have some questions concerning the past exam questions.

For 2016-17 past paper A3, may I ask if we need to consider the "initial characteristics of the food" on top of the treatment/processes mentioned in questions i. to x.? Would it be possible that the treatment/process shows there will be bacteria growth but the "initial characteristics of the food" limits it?

And for A3 iv., may I ask why the answer is G, S? The water activity is of the food 0.85 but in the notes the minimum Aw for C. perfringens is 0.95, so I think the bacteria cannot grow in this case?

Thank you for taking time to read my email.

A:  Dear HHHHHH,

1.       Yes, you need to consider all characteristics of the food.

2.       It was a mistake I made on the blog, A3 iv. Should be NG, S.

Best,

HS KWAN