The coffee industry in the world generates about 6-10 million tons of spent coffee grounds (SCG) every year, most of which are disposed using landfills or by burning, which exerts a lot of strain on the environment. High in polysaccharides (45-50%), SCG is one of the promising lignocellulosic feedstocks to cellulose extraction. The standard alkaline extraction guidelines rely on the application of high concentrations of NaOH and high temperatures, which limit their sustainability. This research focuses on synergistic ultrasound-alkali-urea that can be used to recover cellulose in a more lenient condition and to use this cellulose to obtain nanocellulose to apply in the functional carrier system and bio-composite film in food applications.

Кумар П. (науч. рук. Булькран М.) Cellulose derived from spent coffee grounds for nanocellulose production and its potential as functional carrier systems and biocomposite films // Сборник тезисов докладов конгресса молодых ученых. Электронное издание. – СПб: Университет ИТМО, [2026]. URL: https://kmu.itmo.ru/digests/article/16243