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Recovery and Use of Bioactive Materials and Biomass
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Prof. Dr. Xiang Li
College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730050, China
Dr. Xianbao Xu
Faculty of Civil and Environmental Engineering, Gdansk University of Technology, ul. Narutowicza 11/12, 80-233 Gdansk, Poland
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Recovery and Use of Bioactive Materials and Biomass

Abstract submission deadline
25 August 2025
Manuscript submission deadline
25 November 2025
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Topic Information

Dear Colleagues,

Solid waste originates from many fields, including industrial and agricultural production, as well as daily life in general. The improper disposal of solid waste can lead to ecological environmental risks; however, solid waste is also an important resource. Bioactive materials and recyclable materials are significant components of solid waste, and the recovery in addition to the use of bioactive or recyclable materials are of great significance in regard to the recycling of waste substances.

This Topic has a threefold focus: The first pertains to the technical and environmental challenges in material cycling and waste management. The second involves utilizing artificial intelligence (AI) technology for intelligent identification, the optimization of recycling processes, and enhanced resource recovery. The third focuses on advancing interdisciplinary scientific research to drive further progress in material cycling and solid waste management.

Prof. Dr. Xiang Li
Dr. Tianfeng Wang
Dr. Xianbao Xu
Topic Editors

Keywords

  • solid waste management
  • bioactive materials
  • recyclable materials
  • ecological environmental risks
  • interdisciplinary science of material cycles

Participating Journals

Journal Name Impact Factor CiteScore Launched Year First Decision (median) APC
Biomass
biomass 		- 2.9 2021 23.2 Days CHF 1000 Submit
Microorganisms
microorganisms 		4.1 7.4 2013 11.7 Days CHF 2700 Submit
Sustainability
sustainability 		3.3 6.8 2009 19.7 Days CHF 2400 Submit
Water
water 		3.0 5.8 2009 17.5 Days CHF 2600 Submit
Fermentation
fermentation 		3.3 3.8 2015 15.4 Days CHF 2100 Submit
Energies
energies 		3.0 6.2 2008 16.8 Days CHF 2600 Submit
Materials
materials 		3.1 5.8 2008 13.9 Days CHF 2600 Submit

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Published Papers (1 paper)

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15 pages, 3782 KiB  
Article
Cassia grandis L.f. Pods as a Source of High-Value-Added Biomolecules: Optimization of Extraction Conditions and Extract Rheology
by Filipe M. M. Cordeiro, Salomé G. Bedoya, Daniel A. P. Santos, Rebeca S. Santos, Thomas V. M. Bacelar, Filipe S. Buarque, George Simonelli, Ana C. M. Silva and Álvaro S. Lima
Biomass 2025, 5(2), 24; https://doi.org/10.3390/biomass5020024 - 25 Apr 2025
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Abstract
High-value-added biomolecules such as phenolic compounds and flavonoids from secondary metabolism and macromolecules such as sugars are the main constituents of several plants. Thus, this work aims to optimize the extraction of these biomolecules present in the pods of Cassia grandis L.f. Initially, [...] Read more.
High-value-added biomolecules such as phenolic compounds and flavonoids from secondary metabolism and macromolecules such as sugars are the main constituents of several plants. Thus, this work aims to optimize the extraction of these biomolecules present in the pods of Cassia grandis L.f. Initially, the effect of choline-based ionic liquids—ILs (choline chloride [Ch]Cl, dihydrogen citrate [Ch][DHC], and bitartrate [Ch][BIT]) as extracting agents for phenolic compounds and flavonoids was evaluated based on their efficiency and selectivity. Then, a 23 full factorial design with six central points was performed using the IL concentration, the solid–liquid ratio, and the temperature as independent variables. The extract obtained in the best condition was subjected to pervaporation, after which the concentrates and the crude extract were used to determine the physical properties (density, viscosity, and refractive index). The hydrophobic–hydrophilic balance of the extracting agent and the biomolecules are the extraction process’s driving force. The best extraction condition was formed by [Ch][DHC] at 15 wt%, with a solid–liquid ratio of 1:15, at 45 °C for 30 min, resulting in 153.71 ± 5.81 mg·g−1 of reducing sugars; 483.51 ± 13.10 mg·g−1 of total sugars; 11.79 ± 0.54 mg·g−1 of flavonoids; and 38.10 ± 2.90 mg·g−1 of total phenolic compounds. All the physical properties of the biomolecules are temperature-dependent; for density and refractive index, a linear correlation is observed, while for viscosity, the correlation is exponential. Increasing the temperature decreases all properties, and the extract concentration for 8× presents the highest values of density (1.283 g·cm−3), viscosity (9224 mPa·s), and refractive index (1.467). Full article
(This article belongs to the Topic Recovery and Use of Bioactive Materials and Biomass)
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