You can't because vitamin A doesn't exist in carrots. Beta-carotene on the other hand is a provitamin A molecule that can be extracted. You can either blend the carrot and then extract the beta-carotene with acetone or you can use something like ethyl lactate.
For more information there is an article
Ishida, B. and Chapman, M., "Carotenoid Extraction from Plants Using a Novel, Environmentally Friendly Solvent",J. Agric. Food Chem., 2009, 57 (3), pp 1051-1059
Yes, vegetables contain vitamin C. Examples of the vegetables containing vitamin C are as follows:PeppersSpring greensBrusselsBroccoliBok choyNote: There are also vegetables that contain vitamin C which are not inluded on the above list.
Fruits and Vegetables
Vitamin C is very common, in that it is found in all fresh fruits and vegetables.
The age of a vegetable does not affect the vitamin C content. However, vitamin C can be destroyed by heat.
The heat from the microwaving destroys some of the Vitamin C.
Some fruits that contain Vitamin C include:OrangesLemonsLimesGrapefruitCantaloupesMangoPapayasSome vegetables that contain Vitamin C include:Bean SproutsGreen PeppersBroccoliKale
The vitamin C (and vegetables and fruits containing this vitamin).
There is no vitamin C in a fried egg. For vitamin C you need fresh fruits and vegetables.
some books and leaflets tell you whether they have vitamin c in the fruit or veg or not.
Vitamin C or ascorbic acid is destroyed when we cook vegetables.
vitamin c
all leafy vegetables have iron and vitamin c