Why is there a comma at the end of this Sentence?

Why is there a comma after palate in the sentence below?

Many dairy foods come in low-fat version, and though not all of them may be pleasing to the palate, some are.

Answer

This is one of the usage of comma.

From Purdue OWL:

Use a comma near the end of a sentence to separate contrasted coordinate elements or to indicate a distinct pause or shift

Reference: https://owl.english.purdue.edu/owl/owlprint/607/