This is the 10555th most frequent Russian word.
вкусовые
Relating to taste or flavor.
Here, "вкусовые" is used as an adjective to describe "рецепторы" (receptors), indicating their function related to taste.
Вкусовые рецепторы помогают нам ощущать вкус пищи.
Taste receptors help us sense the taste of food.
In this sentence, "вкусовые" modifies "предпочтения" (preferences), signifying the type of preferences related to taste.
Вкусовые предпочтения у каждого человека индивидуальны.
Taste preferences are individual to each person.
The term "вкусовые" here describes "нотки" (notes), referring to the subtle taste characteristics imparted by the sauces.