Specialty Additives
1 ingredient from 3 Chinese manufacturers
This is a residual grouping for materials that do not fit the functional categories, so its members share little beyond being process inputs. Acetic Anhydride is a reagent rather than an additive: it acetylates starch to make the stabilised modified starches used in chilled and frozen sauces, and it is a controlled substance in most jurisdictions, which affects how it can be shipped and who is allowed to buy it.
Glucono-Delta-Lactone appears here in its tofu coagulant role. It hydrolyses slowly in water to gluconic acid, so soy milk acidifies evenly as it stands and sets to a smooth curd without the grain a fast salt coagulant produces. Where it is sold as a prepared coagulant blend rather than as the pure lactone, the declared composition and the dosing rate matter more than the assay of any single component.
Sourcing from China
Acetic anhydride is a listed precursor chemical, so export requires licensing and end use documentation, and lead times reflect that rather than production capacity. It is made by large chemical producers in Jiangsu, Shandong and Henan. Glucono-delta-lactone is produced by glucose oxidation at a small number of plants in Jiangsu and Shandong. Because this grouping mixes chemical and food supply chains, the first check is whether the seller holds a food production licence for the item or is trading it off an industrial line.
