Journal
MOLECULES
Volume 22, Issue 5, Pages -Publisher
MDPI
DOI: 10.3390/molecules22050680
Keywords
citrus wastes; ultrasound; pulsed electric fields; microwaves; high pressure; supercritical CO2
Funding
- Croatian Science Foundation [HRZZ 3035, IP-2016-06-1913]
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Citrus is a major processed crop that results in large quantities of wastes and by-products rich in various bioactive compounds such as pectins, water soluble and insoluble antioxidants and essential oils. While some of those wastes are currently valorised by various technologies (yet most are discarded or used for feed), effective, non-toxic and profitable extraction strategies could further significantly promote the valorisation and provide both increased profits and high quality bioactives. The present review will describe and summarize the latest works concerning novel and greener methods for valorisation of citrus by-products. The outcomes and effectiveness of those technologies such as microwaves, ultrasound, pulsed electric fields and high pressure is compared both to conventional valorisation technologies and between the novel technologies themselves in order to highlight the advantages and potential scalability of these so-called enabling technologies. In many cases the reported novel technologies can enable a valorisation extraction process that is greener compared to the conventional technique due to a lower energy consumption and reduced utilization of toxic solvents.
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