Sodium Propionate vs Locust Bean Gum: which is worse?

What is Sodium Propionate?

Sodium propionate is the sodium salt of propionic acid. Like calcium propionate (E282), it is used as an antimicrobial preservative to prevent mold and bacterial spoilage in bread and baked goods. It is also used in poultry and animal feed applications.

What is Locust Bean Gum?

Locust bean gum (LBG) is a galactomannan polysaccharide extracted from the seeds of the carob tree (Ceratonia siliqua), native to the Mediterranean. It is a fine white to yellow powder that forms a thick gel when dissolved in hot water. It synergizes strongly with xanthan gum and carrageenan to enhance gel strength.

Documented risks

Sodium Propionate: The health profile is essentially the same as calcium propionate. The 2019 Science Translational Medicine study implicating propionate in metabolic changes applies to all propionate salts. Behavioral sensitivity concerns that have been anecdotally reported with calcium propionate may similarly apply. At regulated use levels, sodium propionate is considered safe by global regulatory agencies.

Locust Bean Gum: Generally recognized as safe. EFSA's Panel on Food Additives confirmed the safety of LBG in 2017, noting no concerns at current dietary exposures. It functions as a soluble dietary fiber and can have mild prebiotic effects. No significant adverse effects have been documented in human or animal studies at food-relevant doses.