Processing, Valorization and Application of Bio-Waste Derived Compounds from Potato, Tomato, Olive and Cereals: A Review

Abstract

Abstract:The vast and ever-growing amount of agricultural and food wastes has become a major concern throughout the whole world. Therefore, strategies for their processing and value-added reuse are needed to enable a sustainable utilization of feedstocks and reduce the environmental burden. By-products of potato, tomato, cereals and olive arise in significant amounts in European countries and are consequently of high relevance. Due to their composition with various beneficial ingredients, the waste products can be valorized by different techniques leading to economic and environmental advantages. This paper focuses on the waste generation during industrial processing of potato, tomato, cereals and olives within the European Union and reviews state-of-the-art technologies for their valorization. Furthermore, current applications, future perspectives and challenges are discussed.

The Correlation between Soil Nutrient and Potato Quality in Loess Plateau of China Based on PLSR

“…The results of this study by PLSR method show that the soil nutrient factors influencing potato quality from large to small were soil ammonium nitrogen > soil available phosphorus > soil nitrate nitrogen > available potassium > pH. The content of potato starch, vitamin C, soluble total sugar, potato crude protein, and reducing sugar can be significantly increased by applying appropriate nitrogen, phosphorus, and potassium fertilizer into potato planting plot [56]. In this study, the pH was significantly correlated with starch content, reducing sugar content, and soluble protein content.…”

A research challenge vision regarding management of agricultural waste in a circular bio-based economy

“…Biological production of platform chemicals from agro-resources, biomass waste and food processing residues has been reported in the literature Sheldon, 2014;Lin et al, 2013;Dugmore et al, 2017;Fritsch et al, 2017). However, valorisation techniques have only been validated at lab-scale.…”

Proximal composition, bioactive compounds and biorefinery approach in potato tubers of Solanum tuberosum Group Phureja: a review

“…Potato residues are generally considered a waste, and in most cases, they are discarded. As mentioned above, several researchers suggest that potato peel is a valuable source of bioactive compounds and nutrients, including antioxidants, dietary fibre, pigments, vitamins and minerals (Akyol et al , ; Fritsch et al , ; Priedniece et al , ; Pathak et al , ). Some approaches have recently proposed the valorisation of this waste through fermentation routes, which can provide industrial enzymes and biofuels as a promising source of energy (Galhano dos Santos et al , ; Gebrechristos & Chen, ).…”

“…Researchers have shown that potato processing wastes can be an important source of compounds such as proteins, starch, glycoalkaloids (Priedniece et al , ; Gebrechristos & Chen, ), dietary fibre (Schieber & Saldaña, ; Scharf et al , ) and phenolic compounds (Singh & Saldaña, ; Singh et al , , ; Wijngaard et al , ; Akyol et al , ; Kumari et al , ). Due to the valuable composition, biorefinery approaches using potato peel as biomass to convert it into an array of products by means of different paths and processing methods have been proposed (Ahokas et al , ; Fritsch et al , ; Pathak et al , ). To the best of our knowledge, however, those studies have been developed in several potato species different from the Group Phureja.…”