The invention relates to a polymer film obtainable from the crosslinking reaction between pectin and carboxymethylcellulose in the presence of an organic calcium salt and a plasticiser. The film can comprise zeolite, loaded or not loaded with silver ions. The organic calcium salt is selected from: calcium propionate, calcium acetate, calcium lactate, calcium sorbate, calcium glutamate, calcium oleate, calcium palmitate, calcium laurate, calcium stearate and calcium myristate. The plasticising agent is a saturated or unsaturated fatty acid selected from: oleic acid and palmitic, stearic, lauric, myristic, myristoleic, palmitoleic and linoleic acid; polyethylene glycol; glycerol; glycerol derivatives; and citric acid salts, preferably sodium citrate. The polymer film can be laminated to at least one film/layer of plastic material, possibly biodegradable, or to a layer of paper and used for packaging foods, in particular baked products, with the aim of preserving them and extending their shelf life.

The present invention relates to a preparation method of an edible and biodegradable environmental-friendly tableware, and the present invention provides a preparation method of a natural macromolecule-based edible and degradable tableware, where the principles of endogenous diffusion and polymer crosslinking to prepare an edible tableware such as a straw, a cup and a bowl from a microscopic state. The tableware material of the present invention may degrade rapidly under natural conditions and requires no composting. The tableware prepared by the method of the present invention has an excellent water stability performance. In terms of material acquisition, carrageenan, sodium alginate and other raw materials are widely available and stable, and may constitute a good substitute for grain starch, wood, etc., and the material cost is low.

This disclosure provides a method of administrating to a subject a two-portion solution system in a specific ingesting order to yield a water-insoluble cross-linked hydrogel mass in the stomach. The volume of the formed water-insoluble cross-linked hydrogel mass is at least 50% v/v of the total volume of the two-portion solution system. The method is useful for preventing and treating overweight and obesity.

A pectin-based composite barrier comprising (i) a pectin. (ii) a cellulose nanofiber (CNF), and (iii) a mild base such as sodium borate (NaB) or sodium carbonate (NaC) and a packaging product, such as a modified atmosphere packaging product, comprising same.

Methods of making films with feedstock comprising biomass. The methods include treating a feedstock comprising biomass with an acidic aqueous solution to yield a solid phase and a liquor, generating a forming fluid with the liquor, and generating a film from the forming fluid. Some versions include comminuting the solid phase to generate a comminuted solid phase and including the comminuted solid phase in the forming fluid. The biomass preferably contains relatively high amounts of pectin and protein. The films can be in the form of standalone films or coatings on substrates such as paper. The films provide oil and grease resistance and air impermeability, among other advantages.