Question

depict three factors
that encourage microbial activity namely moisture, warmth and oxygen in
the presence of abundant food.
a. Suggest ways by which we can preserve by bringing down the
moisture content of the food item.
b. Why are packets of chips filled in with nitrogen gas?

Answer 1

Answer:

a.There are two main ways to can produce: boiling hot water baths and pressure canning. A boiling water bath involves putting food in glass canning jars and then heating the jars in a pot of boiling water. ... You can then seal the jars. This method works best with naturally acidic foods like fruits.

b.That air is actually nitrogen gas. Nitrogen is an inert gas, and is used during the packaging process to exclude and remove air and in particular, oxygen. ... By using nitrogen to push out the oxygen in chip bags, the shelf life is extended, and the integrity and quality of the chips and snacks are kept.