Value-Added Applications of Agricultural Byproducts: Bioactive Components and Sustainable Processing

A special issue of Agriculture (ISSN 2077-0472). This special issue belongs to the section "Agricultural Product Quality and Safety".

Deadline for manuscript submissions: 25 October 2026 | Viewed by 708

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Research Support Group on Nanomaterials, Polymers, and Interaction with Biosystems (BioNano), Department of Biochemistry, Chemistry Institute, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
Interests: biopolymers; biodegradable polymers; food waste valorization; native plants; food packaging; green chemistry; nanomaterials; bioactive compounds; sustainable foods
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Special Issue Information

Dear Colleagues,

The sustainable utilization of agricultural by-products has become a key strategy to advance the circular bioeconomy and mitigate environmental impacts. These agro-industrial side streams, often discarded or underexploited, are valuable sources of bioactive ingredients such as phenolic compounds, polysaccharides, proteins, fibers and lipids that can contribute to improving the quality, functionality and safety of agricultural and agri-food systems. Recent advances in green extraction and biorefinery concepts have opened new opportunities for obtaining these bioactive components through eco-efficient processing routes aligned with sustainable agricultural production. In addition, emerging strategies such as the nanoencapsulation of agro-based bioactives are increasingly being explored as tools to enhance post-harvest preservation and maintain product quality.

This Special Issue aims to gather interdisciplinary studies focused on the recovery, purification, characterization and application of bioactive ingredients derived from agricultural by-products, with emphasis on value-added uses that enhance agricultural product quality, shelf life and safety.

Topics of interest include but are not limited to:

  • Green and sustainable extraction or fractionation techniques for agro-residues
  • Structural and functional characterization of bioactive ingredients of agricultural origin
  • Natural antioxidants, antimicrobial agents and their role in agricultural product quality and safety
  • Post-harvest valorization strategies for agricultural by-products
  • Circular bioeconomy approaches and sustainability metrics in agro-industrial chains
  • Nanoencapsulation and delivery systems of bioactive components for post-harvest preservation and quality

We welcome original research articles, reviews and perspectives.

Dr. Anna Paula Azevedo De Carvalho
Guest Editor

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Keywords

  • agricultural by-products
  • bioactive compounds
  • post-harvest quality
  • green extraction
  • nanoencapsulation
  • sustainable processing
  • agricultural product quality
  • natural antioxidants
  • antimicrobial compounds
  • circular bioeconomy

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Published Papers (1 paper)

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28 pages, 2507 KB  
Systematic Review
Valorization of Babassu (Attalea speciosa) Waste: A Systematic Review of Phytochemical Extraction Methods and Antioxidant Capacity
by Anna Paula Azevedo de Carvalho, Mayara Regina da Silva de Figueiredo and Carlos Adam Conte-Junior
Agriculture 2026, 16(11), 1230; https://doi.org/10.3390/agriculture16111230 - 2 Jun 2026
Viewed by 318
Abstract
Babassu (Attalea speciosa) is one of the most abundant palm species in the Brazilian Amazon and an important unconventional crop, playing a key socioeconomic role due to the commercial exploitation of its oil-rich almonds. However, approximately 90–93% of the fruit biomass—mainly [...] Read more.
Babassu (Attalea speciosa) is one of the most abundant palm species in the Brazilian Amazon and an important unconventional crop, playing a key socioeconomic role due to the commercial exploitation of its oil-rich almonds. However, approximately 90–93% of the fruit biomass—mainly mesocarp, epicarp, and endocarp—is generated as underutilized residue. This systematic review aims to analyze extraction methods, phytochemical composition, and antioxidant capacity of bioactive compounds derived from different babassu fractions. Following PRISMA guidelines, searches of five databases (Embase, ScienceDirect, Scopus, PubMed, and Web of Science) retrieved 410 records, of which 23 met the inclusion criteria. The results show that, although research has predominantly focused on the almond fraction, non-edible parts contain significant levels of phenolic compounds, flavonoids, phytosterols, and other bioactive metabolites with antioxidant properties. Green and non-thermal extraction technologies, such as ultrasound-assisted extraction (UAE), supercritical CO2 extraction (SC-CO2), and pressurized liquid extraction (PLE), demonstrated advantages in improving extraction efficiency while reducing solvent consumption and thermal degradation. Overall, the available evidence indicates that babassu residues represent a promising and still underexplored source of bioactive compounds. Their valorization may contribute to sustainable extraction strategies, waste reduction, and the development of value-added products within agricultural and bioeconomic systems. Full article
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