What helps a sliced fruit or vegetables oxidize slower? What helps a sliced fruit or vegetables oxidize slower ?

A need of chemical compound to use for the slowing of oxidation... we have tried using a lemon juice it actually helped by 15 mins. However it change the quality of the vegetable after being dip for 10 mins and (the problem is how do we slow down the oxidation for 10 days without changing the quality of the fruit) since lemon juice changes the quality of its compound (2-3 days rather).
You can cover the cut pieces with aluminium foil which acts as sacrificial element and prevents oxidation of food.