This is a known action and why black pepper or piperine is used in many formulas check out the use of capsaicin too.
Here is one list of substances that piperine is known to increase bioavailability in...
coenzyme Q10 (CoQ10)
curcumin (extract from turmeric)
selenium (from selenomethionine)
vitamin B-6 (pyridoxine)
glucose (absorption increased)
amino acids (absorption increased
Note the reference to selenium... among other "nutrients".
The list is from
The site has a more complete list of substances that pierine may affect the bioavailability of one way or the other...
If you check out Middle Eastern, Indian, and Himalayan regional cooking, you will see that turmeric is rarely used by itself... most often it is used in a spice mix of 4 or more spices\herbs that all complement each other in health benefits in one way or the other...
Perhaps mo123 could help us with this... she is one of the resident experts on these herbs and spices IMO.
She gave us some great information on the use of Black Seed a while back.