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Recovery and Utilization of Bioactive Compounds from Fruit and Vegetable...
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Recovery and Utilization of Bioactive Compounds from Fruit and Vegetable By-Products and Waste

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Phytochemistry".

Deadline for manuscript submissions: closed (30 May 2023) | Viewed by 3156

Special Issue Editor

Dr. Filomena Monica Vella

E-Mail Website
Guest Editor
National Research Council (CNR), Institute of Biosciences and BioResources (IBBR), Via P. Castellino, 80131 Naples, Italy
Interests: plant-waste valorization; food-processing byproducts; eco-friendly extraction; bioactive compounds; polyphenols; antioxidants; essential oils
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Fruits and vegetables play a crucial part in our diet and life; the demand for them has increased significantly recently as a result of the growing world population and changing dietary habits. Fruits and vegetables are consumed raw and at times are minimally processed or heavily processed, generating large quantities (from 25% to 30%) of waste and by-products along the entire supply and handling chain, presenting a serious nutritional, economical, and environmental problem. Fruit and vegetable waste and by-products are mainly composed of seeds, skins, rinds, pulp remnants, roots, leaves, kernels, stems, flowers, and pomace, all of which are good sources of potentially valuable bioactive compounds, such as carotenoids, polyphenols, flavonoids, terpenes, dietary fibers, vitamins, enzymes, and oils.

As we transition toward a more sustainable approach and lifestyle, a pivotal role is played by the circular economy and related smarter waste and by-product management with the goal of exploiting and valorizing fruits’ and vegetables’ high added-value phytochemicals. These biomolecules can be utilized in various different fields, such as the food industry, for the development of functional or enriched foods; the health sector, for the creation of new and improved medicines and pharmaceuticals; personal care, for the formulation of bio-based cosmetics; and the textile and feed industries.

This Special Issue aims to gather reviews and original research on bioactive components extracted from fruits and vegetables wastes and by-products. Papers should discuss how their use is an important step toward sustainable improvement and provide information about phytochemicals and bioactivity linked to their potential applications in different fields.

Dr. Filomena Monica Vella
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Plants is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • fruits and vegetables
  • wastes
  • by-products
  • valorization
  • bioactive compounds
  • polyphenols
  • essential oils

Published Papers (2 papers)

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Research

14 pages, 4042 KiB  
Article
Application of Essential Oils Extracted from Peel Wastes of Four Orange Varieties to Control Anthracnose Caused by Colletotrichum scovillei and Colletotrichum gloeosporioides on Mangoes
by Chau Trung Duong, Huynh Thi Phuong Thao, Nguyen Thi Nhu Y, Doan Thi Kieu Tien, Nguyen Thi Thu Nga, Tran Chi Nhan, Bui Thi Cam Huong, Sezai Ercisli, Nguyen Thi Ngoc Truc and Luu Thai Danh
Plants 2023, 12(15), 2761; https://doi.org/10.3390/plants12152761 - 25 Jul 2023
Cited by 1 | Viewed by 1432
Abstract
A huge amount of orange peel waste is annually discharged into the environment. Processing of this waste for the control of post-harvest fruit diseases can reduce environmental pollution. Essential oils (EOs) from fruit peels of Citrus reticulata × sinensis (Sanh cultivar) and Citrus [...] Read more.
A huge amount of orange peel waste is annually discharged into the environment. Processing of this waste for the control of post-harvest fruit diseases can reduce environmental pollution. Essential oils (EOs) from fruit peels of Citrus reticulata × sinensis (Sanh cultivar) and Citrus sinensis (Xoan, Mat and Navel cultivar) were investigated for their ability to control anthracnose caused by Colletotrichum gloeosporioides and Colletotrichum scovillei on mangoes. EOs were extracted by hydro-distillation and analyzed by GC-MS and GC-FID. The antifungal activity of the EOs was determined by in vitro and in vivo assays. The Mat cultivar had the highest extraction yield of 3% FW, followed by Xoan (2.9%), Sanh (2.2%), and Navel (1%). The chemical composition of the EOs was similar, with limonene as the main compound (around 96%). The antifungal activity of EOs was not different, with a minimum fungicidal concentration of 16% for both fungi. The disease inhibition of EOs increased with their concentration. The highest inhibition of anthracnose caused by both fungi on mangoes was achieved at 16% EO. EOs had no adverse effect on mango quality (pH, total soluble solids, total acidity, color and brightness of mangoes), except firmness and weight loss at high concentrations (16%). Orange EOs can be used as bio-fungicides to control mango anthracnose at high concentrations. Full article
(This article belongs to the Special Issue Recovery and Utilization of Bioactive Compounds from Fruit and Vegetable By-Products and Waste)
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11 pages, 1126 KiB  
Article
Application of Citrus and Apple Fibers for Formulation of Quercetin/Fiber Aggregates: Impact of Quercetin Concentration
by Ivana Buljeta, Ina Ćorković, Anita Pichler, Josip Šimunović and Mirela Kopjar
Plants 2022, 11(24), 3582; https://doi.org/10.3390/plants11243582 - 19 Dec 2022
Cited by 1 | Viewed by 1381
Abstract
Among flavonoids, quercetin has gained special attention due to its positive biological activities. Quercetin’s disadvantages, such as its hydrophobic nature, poor solubility, and permeability, could be overcome by complexation with different polymers. Dietary fibers are known as carriers of polyphenols, which can protect [...] Read more.
Among flavonoids, quercetin has gained special attention due to its positive biological activities. Quercetin’s disadvantages, such as its hydrophobic nature, poor solubility, and permeability, could be overcome by complexation with different polymers. Dietary fibers are known as carriers of polyphenols, which can protect them from environmental conditions and thus allow them to be absorbed. In this study, apple and citrus fibers (as applicable food by-products) were used as carriers of quercetin. A constant amount of fibers (1%) and different concentrations of quercetin solution (5 mM, 10 mM, and 20 mM) were complexed. Obtained fiber aggregates were subjected to HPLC to determine the quercetin concentration and antioxidant activity of aggregates (ABTS, DPPH, FRAP, and CUPRAC assays). IR spectra were recorded to confirm complexation of quercetin with selected fibers, and an additional DSC study was performed to evaluate the thermal stability of fiber aggregates. The results of HPLC analysis showed that quercetin had higher affinity towards apple fiber than citrus fiber, without proportional trends of adsorption. Consequently, apple fiber aggregates had higher antioxidant potential than citrus fiber aggregates. FTIR-ATR analysis showed the formation of new bands and the loss of existing bands when quercetin was present. Adsorption of quercetin also had an impact on the thermal stability of formulated fiber aggregates. For apple fiber, this impact was negative, while for citrus fiber, the impact was positive. These results could contribute to greater understanding of quercetin’s behavior during the preparation of food additives based on polyphenols and fibers. Full article
(This article belongs to the Special Issue Recovery and Utilization of Bioactive Compounds from Fruit and Vegetable By-Products and Waste)
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