... used as nutrition supplements and food additives 1,Food-grade glycine is mainly used as nutrition supplements and food additives. Seasoning ... anti-corrosion in surimi products, peanut butter, etc. C Buffering: glycine, with amino carboxyl zwitterion, offers strong buffering. It has a ... metals): if added into butter, cheese, and margarine, their shelf 2,life can be extended by 3-4 times.3,It ...