Abstract
Nowadays, the food sector is highly concerned with environmental issues and foreseen to develop strategies to reduce waste and losses resulting from activities developed in the food system. An approach is to increment added value to the agro-industrial wastes, which might provide economic growth and environmental protection, contributing to a circular economy. Mushroom by-products represent a disposal problem, but they are also promising sources of important compounds, which may be used due to their functional and nutritional properties. Research has been developed in different fields to obtain value added solutions for the by-products generated during mushroom production and processing. Bioactive compounds have been obtained and applied in the development of nutraceutical and pharmaceutical formulations. Additionally, other applications have been explored and include animal feed, fertilizer, bioremediation, energy production, bio-based materials, cosmetics and cosmeceuticals. The main purpose of this review is to highlight the relevant composition of mushroom by-products and discuss their potential as a source of functional compounds and other applications. Future research needs to explore pilot and industrial scale extraction methods to understand the technological feasibility and the economic sustainability of the bioactive compounds extraction and valorization towards different applications.
Highlights
Edible mushrooms have long been consumed both as valuable protein and energy sources, and to improve human health and longevity
This review aims to present and discuss the potential applications of mushroom by-products being focused on the extraction of bioactive compounds which could result in nutraceuticals with high economically value
Findings presented in this study suggested that the polysaccharides extracted from P. eryngii mycelium from spent mushroom substrate (SMS) might be suitable for functional foods and natural antitumor drugs development [16]
Summary
Edible mushrooms have long been consumed both as valuable protein and energy sources, and to improve human health and longevity. They are considered healthy foods, being both low in calories and fat, and rich in proteins, minerals and dietary fiber [1,2]. SMS is composed of fungal mycelia, extracellular enzymes secreted from mushrooms for degradation of substances and unused lignocellulosic substrates [4]. These by-products have a high nutritional value and can be valued in several applications
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