claim: Volkswagen Group is an engine distributor.
evidence: Irwin Stone -LRB- 1907 -- 1984 -RRB- was an American biochemist , chemical engineer , and author .. biochemist. biochemist. chemical engineer. chemical engineer. He was the first to use ascorbic acid in the food processing industry as a preservative , and originated and published the hypothesis that humans require much larger amounts of Vitamin C for optimal health than is necessary to prevent scurvy .. ascorbic acid. ascorbic acid. food processing. food processing. preservative. preservative. Vitamin C. Vitamin C. scurvy. scurvy