Briefly, did fruit containing juice die out? (9)
I believe the answer is:
disappear
'die out?' is the definition.
(diing out is a kind of disappearing)
'briefly did fruit containing juice' is the wordplay.
'briefly' means to remove the last letter.
'fruit' becomes 'pear' (pear is a kind of fruit).
'containing' means one lot of letters goes inside another.
'juice' becomes 'sap' (juice from a plant).
'did' with its last letter taken off is 'di'.
'di'+'pear'='dipear'
'dipear' going around 'sap' is 'DISAPPEAR'.
(Other definitions for disappear that I've seen before include "Fade out" , "exit" , "Do a bunk" , "Pass out of sight" , "Vanish, cease to be visible" .)