Mathew J. Newton wrote:

I was going to raise the question of whether or not 'normal' silicone
sealant would suffice but didn't want to set the topic off on a tangent from
the off. I may indeed try the normal stuff if noone steps forward with a
source of the sanitary variety.

I'd say it will be fine because:
[a] The anti fungal properties of sanitary silicone (the only thing that
distinguishes it from normal silicone) don't last very long anyway.
[b] This is a kitchen application, which is generally less demanding
than a bathroom application.

--
Grunff