Abstract
AbstractThe agriculture and horticulture industries generate many by-products while processing commodities, leading to significant environmental and societal dilemmas. Bioactive compounds obtained from by-products of plants are also known as ingredients in traditional medicines and the food industry due to their potential health benefits for humans as antioxidant, anti-inflammatory, and antimicrobial agents. On the other hand, an extensive array of colorants from natural sources has been scrutinized recently in different sectors to mitigate the negative ecological impacts of synthetic dyes, especially in modern textile manufacturing. Approaching these matters, this paper reviews various chemical compositions of plant secondary metabolites, including flavonoids, tannins, phenolic acids, essential oils, tulipalins, and factors that influence the isolation process. Moreover, the article offers an updated view of the advanced technologies for extraction, focusing on eco-friendly solvents such as water, supercritical carbon dioxide, and deep eutectic solvents. Eventually, a comparison of different extraction methods is highlighted to devise the most appropriate strategy for industries. Graphical abstract
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