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This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact

Civil engineering, surveying & building --- biomass variability --- conversion-ready feedstocks --- preprocessing --- blending --- fractionation --- sorting --- resource diversity --- integrated biorefineries

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The bioeconomy initially focused on resource substitution, including the production of biomass from various resources; its conversion, fractionation, and processing by means of biotechnology; and chemistry and process engineering towards the production and marketing of food, feed, fuel, and fibre. Nevertheless, although resource substitution is still considered important, the emphasis has been recently shifted to the biotechnological innovation perspective of the bioeconomy, in terms that ensure environmental sustainability. It is estimated that around one-third of the food produced for human consumption is wasted throughout the world, posing not only a sustainability problem related to food security but also a significant environmental problem. Food waste streams, mainly derived from fruits and vegetables, cereals, oilseeds, meat, dairy, and fish processing, have unavoidably attracted the interest of the scientific community as an abundant reservoir of complex carbohydrates, proteins, lipids, and functional compounds, which can be utilized as raw materials for added-value product formulations. This Special Issue focuses on innovative and emerging food and by-products processing methods for the sustainable transition to a bioeconomy era.

ash content --- sorghum milling waste --- lipids --- compost --- oleic acid --- microbial oil --- bioprocess development --- glucoamylase --- fatty acid methyl esters --- oleaginous yeast --- integrated biorefineries --- biorefineries --- hydrophobic substrates --- food processing --- hydrophilicity --- biodiesel --- films --- biodegradability --- clarified butter sediment waste --- submerged fungal fermentation --- blood plasma protein powder --- Morchella --- hydrogels --- heat-induced gelation --- sustainability --- bacterial cellulose --- bioprocesses --- circular economy --- olive waste --- prebiotics --- Rhodosporidium toruloides --- carotenoids --- waste valorization --- glucosamine --- food-processing --- size exclusion chromatography (SEC) --- bioeconomy --- food waste valorization --- whey proteins --- arabinoxylan --- Ostwald ripening --- emulsion --- emulsifier --- food biotechnology --- drying method --- polysaccharides --- food packaging --- texture --- lactose esters --- morel mushrooms --- circular-economy --- solid state fermentation --- bioactive compounds --- edible films --- hydrolysis --- Aspergillus awamori