Integral valorization of fruit waste from wine and cider industries
| Autor: | Anabel Fernandez, Daniela Salvatori, Jose Miguel Soria, Germán Mazza, Rosa Rodriguez, Paula Sette |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Wine
Renewable Energy Sustainability and the Environment Chemistry 020209 energy Strategy and Management 05 social sciences Extraction (chemistry) Context (language use) 02 engineering and technology Building and Construction Pulp and paper industry Industrial and Manufacturing Engineering Polyphenol Biochar 050501 criminology 0202 electrical engineering electronic engineering information engineering medicine Pyrolysis 0505 law General Environmental Science Activated carbon medicine.drug Waste disposal |
| Zdroj: | Journal of Cleaner Production. 242:118486 |
| ISSN: | 0959-6526 |
| DOI: | 10.1016/j.jclepro.2019.118486 |
| Popis: | Agro-industrial waste disposal is becoming a key issue as a consequence of the increasing number of by-products generated. Within this context, this work proposes an integral, effective and sustainable use of biowaste from regional food industries as a drive towards cleaner production. Apple and grape waste from cider and wine industries was valorized by extracting bioactive compounds and pyrolyzing/gasifying the residual solid to obtain value-added chemical products, such as biochar. The extraction conditions were as follows: a solvent/fruit ratio of 2/1 (w/w), an extraction temperature of 348 K and an extraction time of 1.25 h. The extracts were analysed for soluble solids, sugars, acids, total polyphenol content, antiradical activity and superficial colour. The grape stalk extract presented the highest polyphenol content (1,758 ± 24 g gallic acid/100 kg) and antioxidant capacity (156 ± 6 g gallic acid/100 kg). The liquid fractions can be used to develop functional ingredients. After the extraction process, the remaining solid fraction was subjected to pyrolysis or gasification at low heating rates (10, 15 and 20 K/min). The resulting biochars presented low to moderate surface areas (0.9–266 m2/g) and low H/C ratios (high aromaticity). The obtained biochar can be used for the production of activated carbon to be used in fuel applications and as soil structure reinforcement. The proposed methods allowed for the optimization of waste reclamation with two applications: the development of ingredients for the nutraceutical and food industries and the production of biochar and renewable energy. |
| Databáze: | OpenAIRE |
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