The several complex production steps in rum production produce a number of aldehydes including those found in a fresh orange peel. The origin of the glorious and fresh aroma of freshly raked orange peel comes from the same orange aldehydes that are liberated from the scent glands of the orange skin.
The level of these orange aldehydes in the rum is typically low and their aroma is well integrated into the complex array of roasted and toasted notes. You are more likely to detect them as a certain ineffable freshness that is prominent in some distinguished rums.
See our Rum Aroma Kit for more information.