Rice straw as a valuable source of cellulose and polyphenols: Applications in the food industry

Rice plants generate a large amount of straw after harvesting, which is currently managed mainly by incineration or used as animal bedding, fodder wrapping materials during transport. Other technological uses, such the production energy and biofuels, pulp paper construction have also been described. However, due to current European Union (EU) restrictions, alternatives for waste management must be sought. Valorisation rice aligned with Sustainable Development Goals agenda set EU, since interesting biocompounds described in their composition and, successful extraction purification, they can various sectors. This review gathers most relevant works related valorisation straw. It focuses on polyphenolic extracts cellulose derivatives obtained different techniques, either conventional innovative. In addition, applications that these compounds field food nutrition sciences are summarized. Polyphenols fractions shown viability extracted from straw, showing great potential antioxidants sector nutritional components development new packaging materials, respectively. conclusion, rich source valuable has demonstrated, generates serious environmental human problems difficulties its incineration, adding value underutilized residues contributing circular bioeconomy concept.