Table 4. Food preservative classification

Category (47 types in total)
Listed in Korean food code (28 types)			Not listed in Korean food code (11 types)	Other natural ingredients (8 types)
ε-Polylysine	Calcium sorbate	Calcium acetate	Citrus extract	Licorice extract
Natamycin	Sodium nitrite	Methyl p-Hydroxybenzoate	Mustard extract	Lysozyme
Nisin	Sodium sulfite	Ethyl p-Hydroxybenzoate	Aqueous chili pepper extract	Modified hop extract
Sodium dehydroacetate	Benzoic acid	Propionic acid	Green tea extract	Vitamin C
Sodium metabisulfite	Sodium benzoate	Sodium propionate	Rosemary extract	Yucca extract
Anhydrous sodium sulfite	Potassium benzoate	Calcium propionate	Phyllostachys pubescens (moso bamboo) extract	Irridin protein
Anhydrous sulfurous acid	Calcium benzoate		Radish extract	Chitosan
Glacial acetic acid	Grapefruit seed extract		Complex Scutellaria baicalensis (baikal skullcap) extract	Grape seed extract
Acidic sodium sulfite	Sodium nitrate		Cabbage extract
Sorbic acid	Potassium nitrate		Olive leaf extract
Potassium sorbate	Sodium thiosulfate		Hinokitiol

Based on the data from Korea Food Industry Cluster Promotion Agency (2025).