Abstract
Large amounts of agro-industrial waste are being generated each year, leading to pollution and economic loss. At the same time, these side streams are rich source of active compounds including antioxidants. Recovered compounds can be re-utilized as food additives, functional foods, nutra-/pharmaceuticals, cosmeceuticals, beauty products, and bio-packaging. Advanced extraction techniques are promising tools to recover target compounds such as antioxidants from agro-industrial side streams. Due to the disadvantages of classical extraction techniques (such as large amounts of solvents, increased time of extraction, large amounts of remaining waste after the extraction procedure, etc.), and advanced techniques emerged, in order to obtain more efficient and sustainable processes. In this review paper aspects regarding different modern extraction techniques related to recovery of antioxidant compounds from wastes generated in different industries and their applications are briefly discussed.
Highlights
In a general definition, agro-industrial side streams represent the organic and inorganic material generated as residues from different sectors: agriculture, livestock, dairy production, food, and beverage industry, etc
Food waste are generated from different sectors of food industry, such as vegetables, fruits, milk, meat, fish, and wine production [1]
Aspects regarding different modern extraction techniques related to recovery of antioxidant compounds from wastes generated in different industries and their applications are briefly discussed
Summary
Agro-industrial side streams represent the organic and inorganic material generated as residues from different sectors: agriculture, livestock, dairy production, food, and beverage industry, etc. Food waste are generated from different sectors of food industry, such as vegetables, fruits, milk, meat, fish, and wine production [1]. Antioxidants are found among several groups of natural compounds definitely worth to be recovered from agro-industrial waste and by-products (Table 1). They can be reached in peels, pomace, seed fractions, straws and other agro food wastes which are a rich source of phytochemicals like polysaccharides, dietary fibers, flavor compounds, etc. Aspects regarding different modern extraction techniques (conventional, electro-technologies, enzymatic) related to recovery of antioxidant compounds from wastes generated in different industries and their applications are briefly discussed. Caffeic acid, epicatechin, p-coumaric acid, rutin, catechin gallate [19]
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