Standards for frozen vegetables

You mean like regulatory standards for frozen fruits and vegetables? Here are examples of some

Frozen fruit products

a. Shall be prepared from fresh or previously frozen fruit that is preserved by freezing.
b. Shall be packed

(i) with or without a sweetening ingredient in dry form, or
(ii) in a packing medium consisting of

a. water, with or without a sweetening ingredient, or

b. one or more fruit juices, concentrated fruit juices, reconstituted fruit juices, fruit purees or fruit nectars, with or without a sweetening ingredient.

c. May contain citric acid or ascorbic acid, in accordance with good manufacturing practice.

d. May contain any other substance, the addition of which to frozen fruit is in accordance with good manufacturing practice, and is generally recognized as safe.

Frozen vegetable products

a. Shall be prepared from fresh vegetables, or as a mixture of frozen vegetables, that are preserved by freezing.

b. May contain salt.

c. May contain any other substance, the addition of which to frozen vegetables is in accordance with good manufacturing practice, and is generally recognized as safe.

my professor wasn't very specific about it but thank you though