Innovative Natural Functional Ingredients from Byproducts in the Food Industry

A special issue of Foods (ISSN 2304-8158).

Deadline for manuscript submissions: closed (25 March 2025) | Viewed by 3917

Special Issue Editor

Department of Food Technology, Food Science and Nutrition, Faculty of Veterinary Sciences, Regional Campus of International Excellence “Campus Mare Nostrum”, Espinardo, 30071 Murcia, Spain
Interests: natural extracts; meat science; bakery science; dairy products; lipolysis and proteolysis; bioactive compounds; development of healthier food products; nutrients; food preservation; bioaccessibility; bioavailability
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Special Issue Information

Dear Colleagues,

Foods will be publishing a Special Issue titled "Innovative Natural Functional Ingredients from Byproducts in the Food Industry". A substantial amount of byproducts is generated during food processing, which could serve as a valuable source of various bioactive compounds. These by-products from the primary food industry hold great potential for reuse, as they are rich in natural compounds that can be transformed into high-value-added products for the food sector. Many of these materials remain underutilized and can be re-evaluated as natural sources of ingredients for food applications. Numerous studies have explored the reuse of agro-industrial waste, which provides access to pigments, antimicrobials, fibers, sugars, proteins, oils, antioxidants, vitamins, and organic acids, all at no additional cost.

For this Special Issue, the Guest Editor has gathered contributions from a group of distinguished international researchers to create a valuable resource for researchers, faculty, students, and nutrition as well as health practitioners, in addition to professionals in the food and nutraceutical industries, with a special focus on the development of functional foods in the meat, bakery, and dairy sectors. This Special Issue of Foods will enhance understanding of plant extracts, exploring various aspects, such as preservative properties and health benefits, including studies on the in vivo biological activity of bioactive compounds.

We invite investigators to contribute original research and review articles to this Special Issue, with a focus on characterizing the bioactive properties of plant extracts, addressing challenges, and highlighting achievements related to their incorporation into functional foods. Papers that examine the bioavailability and bioaccessibility of bioactive compounds, or those that explore the application of natural bioactive compounds as alternatives to synthetic additives in the development of functional foods, are especially welcome.

Dr. Gema Nieto
Guest Editor

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Keywords

  • bioactive compounds
  • antioxidant activity
  • antimicrobial activity
  • preservatives’ properties
  • byproducts as preservatives in meat products, bakery products, milk products, and beverages
  • in vitro and in vivo biological activity of plant secondary metabolites
  • food applications
  • phenolic compounds
  • vitamins
  • nutrients
  • fiber
  • pigments

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Published Papers (2 papers)

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Research

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19 pages, 1444 KiB  
Article
Valorization of Citrus Peel Byproducts: A Sustainable Approach to Nutrient-Rich Jam Production
by Monica Negrea, Ileana Cocan, Calin Jianu, Ersilia Alexa, Adina Berbecea, Mariana-Atena Poiana and Marius Silivasan
Foods 2025, 14(8), 1339; https://doi.org/10.3390/foods14081339 - 13 Apr 2025
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Abstract
The valorization of citrus peel byproducts presents a sustainable and innovative approach to reducing food waste while improving the nutritional content of fruit-based products. Citrus peels, a significant byproduct of the fruit juice industry, are abundant in bioactive compounds with recognized health benefits [...] Read more.
The valorization of citrus peel byproducts presents a sustainable and innovative approach to reducing food waste while improving the nutritional content of fruit-based products. Citrus peels, a significant byproduct of the fruit juice industry, are abundant in bioactive compounds with recognized health benefits and functional properties, making them particularly suitable for jam production. The global citrus industry generates substantial amounts of waste, with peels accounting for approximately 50% of the total fruit mass. Conventional disposal methods often result in environmental concerns and the underutilization of valuable bioresources. This study aims to investigate the potential of incorporating citrus peel into jam formulations as a means of enhancing their nutritional and functional properties. Jams were prepared using a traditional processing technique (TP) incorporating citrus peel. The experimental jam variants included pomelo peel jam (PPJ), lime peel jam (LiPJ), lemon peel jam (LePJ), clementine peel jam (CPJ), orange peel jam (OPJ), and grapefruit peel jam (GPJ). All jam samples were subjected to comprehensive analyses, including assessments of chemical composition, total soluble solids (TSSs), titrable acidity (g/100 g acid citric), macro- and microelement contents, total phenolic content (TPC), total flavonoid content (TFC), and antioxidant activity using the FRAP assay. The study revealed high levels of biologically active compounds, such aspolyphenols, flavonoids, and vitamin C, in the jams, highlighting their antioxidant properties and potential health benefits. Among the jams, lemon peel jam (LePJ) exhibited the highest antioxidant activity and polyphenol content, making it a superior choice in terms of functional benefits. In terms of sensory analysis, orange peel jam (OPJ) was the most favored by consumers, demonstrating its high acceptability and potential for market success. Full article
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Review

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33 pages, 1277 KiB  
Review
Brassica oleracea var italica and Their By-Products as Source of Bioactive Compounds and Food Applications in Bakery Products
by Jhazmin Quizhpe, Pablo Ayuso, María de los Ángeles Rosell, Rocío Peñalver and Gema Nieto
Foods 2024, 13(21), 3513; https://doi.org/10.3390/foods13213513 - 2 Nov 2024
Cited by 1 | Viewed by 3185
Abstract
Broccoli (Brassica oleracea var. italica) is one of the most consumed cruciferous crops in the world, with China and Spain acting as the main producers from outside and within the EU, respectively. Broccoli florets are edible, while the leaves and stalks, [...] Read more.
Broccoli (Brassica oleracea var. italica) is one of the most consumed cruciferous crops in the world, with China and Spain acting as the main producers from outside and within the EU, respectively. Broccoli florets are edible, while the leaves and stalks, discarded in the field and during processing, are by-products. Therefore, the objective of this study was to conduct a comprehensive review of the nutrient and phytochemical composition of broccoli and its by-products, as well as its beneficial effects. In addition, the study highlights the revalorization of broccoli by-products through innovative green technologies and explores their potential use in bakery products for the development of functional foods. The studies suggested that broccoli is characterized by a high content of nutrients and bioactive compounds, including vitamins, fiber, glucosinolates, and phenolic compounds, and their content varied with various parts. This high content of value-added compounds gives broccoli and its various parts beneficial properties, including anti-cancer, anti-inflammatory, antioxidant, antimicrobial, metabolic disorder regulatory, and neuroprotective effects. Furthermore, broccoli and its by-products can play a key role in food applications by improving the nutritional profile of products due to their rich content of bioactive compounds. As a result, it is essential to harness the potential of the broccoli and its by-products that are generated during its processing through an appropriate agro-industrial revalorization, using environmentally friendly techniques. Full article
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