Just for the record, Aldi is short for Albrecht Discount, and they basically introduced discount stores to Western Germany on the national scale. In a very short time, they were a force in the market and did exactly what was described above: they sold popular products under a new label.
Regarding fruit and legumes, at least in Germany they have some of the highest standards in the business in regard to quality of the produce. They have enough market power to do that.
From what I read here, Aldi Süd works differently in the US, but this might be a problem of the market, not the company?
ETA: AFAIR, EU regulations say that it a compound is made from natural sources and occurs in nature, it counts as a natural ingredient. I remember a biotech lecture in my undergrad about strawberry aroma and vanilla aroma made from wood.
