Apple pomace, potato peels, and coffee silverskin are attractive agrofood wastes for the production of biofuels and chemicals, due to their abundance and carbohydrate content. As lignocellulosic biomasses, their conversion is challenged by the presence of lignin that prevents hydrolysis of polysaccharides, hence demanding a pretreatment step. In this work, the effectiveness of Pleurotus ostreatus laccases (with and without mediator) to remove lignin, improving the subsequent saccharification, was assessed. Optimized conditions for sequential protocol were set up for all agrofood wastes reaching delignification and detoxification yields correlated with high saccharification. Especially noteworthy were results for apple pomace and coffee silverskin for which 83% of and 73% saccharification yields were observed, by using laccase and laccase mediator system, respectively. The herein developed sequential protocol, saving soluble sugars and reducing the amount of wastewater, can improve the overall process for obtaining chemicals or fuels from agrofood wastes.
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http://dx.doi.org/10.1016/j.biortech.2018.05.108 | DOI Listing |
Food Chem
December 2024
In vitro and in vivo Nutritional and Toxicological Analysis Lab, Federal University of Alfenas, Alfenas, Minas Gerais, Brazil.; Bioactivity & Applications Laboratory, Department of Biological Sciences, Faculty of Science and Engineering, School of Natural Sciences, University of Limerick, Limerick, Ireland.. Electronic address:
The jabuticaba tree leaf, considered an agro-food by-product or waste, was evaluated as a potential unconventional ingredient of bioactive compounds. Its hydroalcoholic extracts were assessed for the phenolic chemical profile by LC-QQQ-MS and antioxidant capacity pre- and post-gastrointestinal digestion (i.e.
View Article and Find Full Text PDFChemosphere
November 2024
Department of Soils and Agri-Food Engineering, Universite Laval, Québec, G1V 0A6, Canada; Institute of Nutrition and Functional Foods (INAF), Universite Laval, G1V 0A6, Canada. Electronic address:
Due to environmental concerns and economic value, the adsorption process using agricultural wastes is one of the promising methods to remove lead (Pb) from contaminated water. The relationships between agricultural waste properties, adsorption conditions, and the maximum Pb adsorption capacity of selected adsorbents have not been adequately explored. A thorough understanding of these interactions is crucial for optimizing adsorption processes and enhancing the efficiency of agricultural wastes as sustainable adsorbents.
View Article and Find Full Text PDFJ Environ Health Sci Eng
December 2024
Laboratory of Petroleum Biotechnology and Environment, Central Directorate Research and Development, Sonatrach, Boumerdes, Algeria.
The objective of this study is to utilize cost-effective renewable substrates derived from agro-food wastes for the production of biosurfactant by , which was isolated from petroleum sludge. Various agro-food waste materials, namely potato peelings (PP), rice cooking water (RW), biscuit by products (BB), carob pods (CP), and eggshells, were evaluated as nutrient sources for bacterial growth compared to a synthetic medium (SM). The results indicate that the medium comprising carob pods, potato peels supplemented with eggshells promoted the growth of the bacteria and the production of Biosurfactants at a rate of 150 mg/l and 140 mg/l respectively.
View Article and Find Full Text PDFEnviron Monit Assess
October 2024
CINTECX-Universidade de Vigo, Department of Chemical Engineering Campus As Lagoas-Marcosende, University of Vigo, 36310, Vigo, Spain.
Constant pollution from a wide range of human activities has a negative impact on the quantity and quality of the planet's water resources. On the other hand, agro-food waste can impact climate change and other forms of life, in addition to having social, economic, and environmental consequences. However, as a result of their inherent physicochemical properties and lignocellulosic composition, these residues are becoming increasingly recognized as valuable products in line with government policies advocating zero waste and circular economies.
View Article and Find Full Text PDFMaterials (Basel)
August 2024
Department of Materials, Eduardo Torroja Institute for Construction Sciences (IETcc-CSIC), Serrano Galvache Street, 4, 28033 Madrid, Spain.
In recent years, the demand for natural and synthetic zeolites has surged due to their distinctive properties and myriad industrial applications. This research aims to synthesise crystalline zeolites by co-recycling two industrial wastes: salt slag (SS) and rice husk ash (RHA). Salt slag, a problematic by-product of secondary aluminium smelting, is classified as hazardous waste due to its reactive and leachable nature, though it is rich in aluminium.
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