Plant based product ingredients

We manufacture surimi based (imitation) Alaska Snow Legs.

We are looking making plant-based product. (Upper management makes plans, then AFTER plans are in place, they ask if everything is in compliance.)

Our president is asking me about a couple different ingredients.

Mannan   and   Curdlan

What can you tell me about these two items?  

In the food industry, mannans have various applications such as edible films/coating, gel formation, stiffeners, viscosity modifiers, stabilizers, texture improvers, water absorbants, as prebiotics in dairy products and bakery, seasonings, diet foods, coffee whiteners etc. 

   I could not find any reference as to how it's labelled on the NFT

Curdlan is used as a thickener, texturizer, and stabilizer in the food industry. It is a water-insoluble linear polysaccharide considered as a nutritional fiber with gelatin properties. Curdlan consists of β-(1 → 3)-linked glucose (Fig. 13.6) residues and can form elastic gels upon heating in aqueous solution.   They are generally defined by the suffix “an” following the name of the sugar component for homopolysaccharide and/or by the same suffix, applied to define specificity of polymer (viz. curdlan for curdle, gellan for a bacterial gel-forming polysaccharide)