Carrageenan – Safe Food Additive or Health Hazard?
Wojciech Wiśniewski
2026-03-25
6 min. read
1 / 1
1 zdjęcie
54
Carrageenan, which is derived from red seaweed, is frequently utilized in the food, pharmaceutical, and cosmetic industries as a thickening and gelling agent, identified by the code E407. Despite its extensive application, its safety is a topic of much debate. Some research suggests potential health hazards, particularly with prolonged consumption of large quantities of this substance. However, this issue evokes varying opinions among scientists and health organizations. So, should we genuinely be apprehensive about the repercussions?
A comprehensive examination of carrageenan: composition, origin, and physicochemical properties
Carrageenan constitutes a naturally derived polysaccharide extracted predominantly from red marine algae, including species such as *Chondrus crispus* (commonly referred to as Irish moss), *Gigartina radula*, and *Eucheuma denticulatum* alongside *Eucheuma spinosum*. From a biochemical standpoint, it represents a class of complex carbohydrates—specifically sulfated galactans—whose molecular architecture is founded upon repeating units of D-galactose and 3,6-anhydro-D-galactose, interconnected via β-1,3- and α-1,4-glycosidic linkages. Its functional behavior is profoundly influenced by the degree of sulfation, molecular weight distribution, and environmental parameters (including temperature, pH levels, and the presence of metallic ions), thereby enabling it to manifest as either thermoreversible gels with adjustable rheological properties or as viscous colloidal dispersions. These distinctive attributes render it an indispensable ingredient within the food industry, where it serves as a gelling agent, stabilizer, and emulsifier (reference: JECFA Monograph, 2014, updated 2021).
You have started reading a PRO article
You can preview the first chapter. To read the complete article and unlock all content, upgrade to a PRO account.
