Stretch Armstrong keeps best at room temperature. Stretch Armstrong is made of latex rubber filled with gelled corn syrup, which allows it to retain shape for a short time before shrinking to its original shape. An estimated 67 different versions from Japan, Germany, Italy, France, Australia, and other countries released Stretch Armstrong variations between 1976 and the 1990s. The last two were filled with a granular solid in place of the viscous liquid found in the other figures. A vacuum pump, which attached to the heads of these figures, removed the air from within, which "froze" the toy in its stretched position.
High-fructose corn syrup HFCS 42 to form HFCS 55. The enzymes used in the process are made by microbial fermentation. HFCS is 24% water, the rest being mainly fructose and glucose with 0–5% unprocessed glucose oligomers. The most common forms of HFCS used for food and beverage manufacturing contain fructose in either 42% ("HFCS 42") or 55% ("HFCS 55") amounts, as described in the US Code of Federal Regulations (21 CFR 184.1866). Commercial production of corn syrup began in 1864. In the late 1950s, scientists at Clinton Corn Processing Company of Clinton, Iowa, tried to turn glucose from corn starch into fructose, but