Valorization of Food-Derived Proteins towards Nutrition, Pharmaceutical and Bioplastics Goals

A special issue of Foods (ISSN 2304-8158). This special issue belongs to the section "Food Biotechnology".

Deadline for manuscript submissions: closed (31 January 2024) | Viewed by 2211

Special Issue Editors

Special Issue Information

Dear Colleagues,

Proteins are essential macronutrients with recognized nutritional, physiological and techno-functional properties. They are important for growth and repair of body tissues, especially muscles and bones, and a source of bioactive peptides, able to exert beneficial effects on human health after their release by hydrolysis, gastrointestinal digestion, and/or food processing. In addition, proteins play an important role in the rheological properties of food products and their stability during manufacture and storage and are an interesting material to develop coatings and edible films for food and pharmaceutical applications.

Important factors, namely, digestibility, amino acid profile, bioavailability, processing, and purity, influence the nutritional quality of proteins. In recent years, nutritionists and food industries are exploring the use of novel protein sources (e.g., insects, algae, hempseed, duckweed, and rapeseed) and new plant-based proteins from natural sources (e.g., beans, seeds, leaves, grains, fruits) and food processing (e.g., brewer´s spent grain, brewer´s spent yeast, oilseed cakes) to meet consumer trends in avoiding the intake of animal proteins. Researchers are currently focused on developing non-thermal-green technologies for improving extraction efficiency and reducing protein degradation. Besides enhancing their nutritional and techno-functional properties, these innovative techniques promote the release of bioactive peptides. Thus, advanced knowledge in these new methodologies (and their advantages and disadvantages in comparison with conventional methods) is essential to achieve high-purity proteins (and bioactive peptides) with interesting properties at high concentration, to be incorporated into food products, supplements, and coating/edible films materials.

This Special Issue focuses on the characterization, processing, modification, biological and technological functionalities, and applications of all types of food-derived proteins. Review and research papers focused on the application of proteins as (i) food supplements in human nutrition and feed; (ii) edible coating/films materials for food and pharmaceutical purposes (iii) emulsifiers in numerous food products, (iv) source of bioactive peptides in nutraceutical and pharmaceutical products, (v) hydrogels in drug delivery and (vi) non-edible applications are welcome.

Dr. Elsa F. Vieira
Prof. Dr. Cristina Delerue-Matos
Guest Editors

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Keywords

  • animal, microbial and plant-derived proteins
  • novel protein sources
  • bioactive peptides
  • protein hydrolysates
  • emulsifiers
  • protein supplements
  • nutraceuticals
  • techno-functional properties
  • sensory analysis
  • protein-based films and coatings
  • protein extraction
  • in vitro and in vivo studies
  • bioavailability

Published Papers (1 paper)

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Research

18 pages, 2278 KiB  
Article
Chayote (Sechium edule (Jacq.) Swartz) Seed as an Unexploited Protein Source: Bio-Functional and Nutritional Quality of Protein Isolates
by Elsa F. Vieira, Ana Q. Fontoura and Cristina Delerue-Matos
Foods 2023, 12(15), 2949; https://doi.org/10.3390/foods12152949 - 4 Aug 2023
Cited by 1 | Viewed by 1717
Abstract
Chayote seeds have good protein quality and recognized bioactive properties, being still unexplored as a nutraceutical. In this work, chayote seed protein isolates (CSPIs) were prepared by alkaline extraction (AE) and ultrasonic-assisted extraction (UAE) using a probe (20 kHz) or a water bath [...] Read more.
Chayote seeds have good protein quality and recognized bioactive properties, being still unexplored as a nutraceutical. In this work, chayote seed protein isolates (CSPIs) were prepared by alkaline extraction (AE) and ultrasonic-assisted extraction (UAE) using a probe (20 kHz) or a water bath (40 kHz), and their physicochemical, functional properties and nutraceutical potential were investigated. For all treatments, protein solutions (10% w/v) were treated for 20 min. The UAE significantly (p < 0.05) improved the protein extraction yield and functional properties (protein solubility, turbidity, and emulsifying and foaming properties) of CSPIs. This effect was more pronounced using a probe sonication device. The CSPI obtained by UAE-20 kHz contained 8.2 ± 0.9% dw of proteins with a balanced amino acid profile, higher content of essential amino acids (315.63 mg/g of protein) and higher protein digestibility (80.3 ± 4.5%). Furthermore, CSPI.UAE-20 kHz exhibited the highest phenolic content (7.22 mg GAE/g dw), antioxidant capacity and α-amylase inhibition (74%, at 100 μg/mL concentration). Overall, these results suggest that ultrasound technology contributed greatly to the corresponding functional and nutritional properties of chayote seed proteins. It would be, therefore, useful to apply this Cucurbitaceae species in food systems, promoting its nutritional and commercial value. Full article
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