Sugar in water when repottin

[Urvasi]

Hi, I went to a workshop about orchids last week end and the speaker told us about an orchid grower in Azores who told him that mixing some sugar in the water when soaking the orchid roots before repotting helps the roots and its good for the plant. however, he said he had no scientific explanation for this, and wasn't sure about the benefits. Anyone has ever heard abut this?