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http://hdl.handle.net/10773/37614
Title: | Waste mitigation: from an effluent of apple juice concentrate industry to a valuable ingredient for food and feed applications |
Author: | Cruz, Marco G. Bastos, Rita Pinto, Mariana Ferreira, João M. Santos, João F. Wessel, Dulcineia Ferreira Coelho, Elisabete Coimbra, Manuel A. |
Keywords: | Retentate Carbohydrates Amino acids composition Lipophilic compounds β-Sitosterol Apple cider |
Issue Date: | 20-Aug-2018 |
Publisher: | Elsevier |
Abstract: | Retentate is a by-product of the concentrate apple juice industry, resultant from clarification through an ultrafiltration process. It has a liquid to sludgy appearance, with 8% of total solids content, usually discarded as industrial waste, conveyed as wastewater directly to the sewage plant. However, its origin and expected composition may allow to define its use as a source of valuable compounds as well as its application in food and feed. The present work shows that retentate is very rich in carbohydrates, namely 40% fructose (dry weight), glucose (8%), oligosaccharides (5%), and polysaccharides (3%). It is also rich in protein (8%) and an available and inexpensive source of β-sitosterol (0.6%). This was the major sterol identified, accounting for 21% of total lipophilic compounds recovered by n-hexane. The retentate suspension was successfully used as nutritive medium for production of cider by a microbrewery and the protein-rich water insoluble material (28% of protein) was successfully used in feed formulations for racing pigeons. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/37614 |
DOI: | 10.1016/j.jclepro.2018.05.109 |
ISSN: | 0959-6526 |
Appears in Collections: | DQ - Artigos QOPNA - Artigos |
Files in This Item:
File | Description | Size | Format | |
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Waste mitigation From an effluent of apple juice concentrate industry to a valuable.pdf | 2.58 MB | Adobe PDF | View/Open |
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