Préparation pour flan café

Agar (pronounced , sometimes ) or agar-agar is a jelly-like substance, obtained from red algae.Agar is a mixture of two components: the linear polysaccharide agarose, and a heterogeneous mixture of smaller molecules called agaropectin. It forms the supporting structure in the cell walls of certain species of algae, and is released on boiling. These algae are known as agarophytes, and belong to the Rhodophyta (red algae) phylum.Agar has been used as an ingredient in desserts throughout Asia, and also as a solid substrate to contain culture media for microbiological work. Agar can be used as a laxative, an appetite suppressant, a vegetarian substitute for gelatin, a thickener for soups, in fruit preserves, ice cream, and other desserts, as a clarifying agent in brewing, and for sizing paper and fabrics.The gelling agent in agar is an unbranched polysaccharide obtained from the cell walls of some species of red algae, primarily from tengusa (Gelidiaceae) and ogonori (Gracilaria). For commercial purposes, it is derived primarily from ogonori. In chemical terms, agar is a polymer made up of subunits of the sugar galactose.

Carrageenan (E407), derived from red seaweed, is widely employed in the food industry as a gelling, thickening, and stabilizing agent, notably in dairy and meat products.

It can exist in various forms, each imparting distinct textural properties to food.

However, its degraded form, often referred to as poligeenan, has raised health concerns due to its potential inflammatory effects and its classification as a possible human carcinogen (Group 2B) by the International Agency for Research on Cancer (IARC).

Nevertheless, food-grade carrageenan has been deemed safe by various regulatory bodies when consumed in amounts typically found in food.