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The Application of “Green” or Emerging Technologies for the Extraction...
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The Application of “Green” or Emerging Technologies for the Extraction of Bioactive Compounds from Food By-Products

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Green Chemistry".

Deadline for manuscript submissions: closed (30 November 2020) | Viewed by 13011

Special Issue Editors

Dr. Maša Knez Marevci

E-Mail Website
Guest Editor
Laboratory for Separation Processes and Product Design, Faculty of Chemistry and Chemical Engineering, and Faculty of Mechanical Engineering, University of Maribor, Maribor, Slovenia
Interests: phase equlibria; extraction; biologically active substances; biomaterials; sub- and supercritical fluids; isolation, fractionation; chromatographic techniques; formulations; product design
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Zeljko Knez

E-Mail Website
Guest Editor
Faculty of Chemistry and Chemical Engineering, University of Maribor, Maribor, Slovenia
Interests: phase equilibrium data; transport properties; extractions; particle formation; product formulation; biochemical reactions in supercritical fluids; hydrothermal conversation of biomass
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

“Process intensification”, as a part of necessary sustainable development and the “green” revolution, uses sustainable technologies for the extraction of bioactive compounds from several sources.

The main impetus for this is, on the one hand, driven by a concern for the environment—to reduce the usage of conventional solvents and energy. On the other hand, these emerging technologies represent a tool to design and produce products with completely new specifications. The exploitation of plant materials and food byproducts shows very promising applications, including the isolation of substances exhibiting anti-microbial, anti-tumor, antioxidant, and antimutagenic potential; their formulation in high value-added products with specific properties; and their in situ formulation.

The extraction of substances from plant materials and wastes (the extraction of herbs, hop extraction, the decaffeination of tea and coffee, and the separation of lecithin from oil) is already performed at an industrial scale for the isolation of components or fractionation of total extracts. The aim of the recent research is that these applications should be sustainable, not only to be ecologically preferable but also to produce products with special properties.

The purpose of this Special Issue is to encourage the publication of manuscripts focused on the bioactive compounds present in natural materials and food processing byproducts, which are of economic importance in the food, feed, and pharmaceutical industries, as well as in medicine, and are known for their beneficial effects.

Dr. Maša Knez Hrnčič
Prof. Dr. Zeljko Knez
Guest Editors

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. Molecules 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

  • separation processes
  • green technologies
  • bioactive compounds (anti-microbial, anti-tumor, antioxidant, antimutagenic)
  • bioactive compound formulation

Published Papers (2 papers)

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Review

27 pages, 949 KiB  
Review
Microbiological and Antioxidant Activity of Phenolic Compounds in Olive Leaf Extract
by Dragana Borjan, Maja Leitgeb, Željko Knez and Maša Knez Hrnčič
Molecules 2020, 25(24), 5946; https://doi.org/10.3390/molecules25245946 - 15 Dec 2020
Cited by 60 | Viewed by 7694
Abstract
According to many reports, phenolic compounds isolated from olive leaves have very good biological activities, especially antimicrobial. Presently, the resistance of microorganisms to antibiotics is greater than ever. Therefore, there are numerous recent papers about alternative solutions for inhibiting their influence on human [...] Read more.
According to many reports, phenolic compounds isolated from olive leaves have very good biological activities, especially antimicrobial. Presently, the resistance of microorganisms to antibiotics is greater than ever. Therefore, there are numerous recent papers about alternative solutions for inhibiting their influence on human health. Olive leaf is studied as an important source of antimicrobials with low cost and used in medicine. Numerous publications on involving green technologies for isolation of active compounds from olive leaves have appeared over the past few decades. The present review reports on current knowledge of the most isolated phenolic compounds from olive leaf extract as well as methods for their isolation and characterization. This paper uses recent research findings with a wide range of study models to describe the antimicrobial potential of phenolic compounds. It also describes the vast range of information about methods for determination of antimicrobial potential focusing on effects on different microbes. Additionally, it serves to highlight the role of olive leaf extract as an antioxidants and presents methods for determination of antioxidant potential. Furthermore, it provides an overview of presence of enzymes. The significance of olive leaves as industrial and agricultural waste is emphasized by means of explaining their availability, therapeutic and nutritional effects, and research conducted on this field. Full article
(This article belongs to the Special Issue The Application of “Green” or Emerging Technologies for the Extraction of Bioactive Compounds from Food By-Products)
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14 pages, 487 KiB  
Review
Bioactive Peptides from Walnut Residue Protein
by Xiangyang Li, Manli Guo, Jingtian Chi and Jiangang Ma
Molecules 2020, 25(6), 1285; https://doi.org/10.3390/molecules25061285 - 12 Mar 2020
Cited by 36 | Viewed by 4598
Abstract
Walnut residue is a kind of high-quality plant protein resource. The bioactive peptide prepared from walnut residue has excellent health care functions such as antioxidation and antihypertensive activity, but at present, walnut residue is often regarded as waste or low value feed, fertilizer [...] Read more.
Walnut residue is a kind of high-quality plant protein resource. The bioactive peptide prepared from walnut residue has excellent health care functions such as antioxidation and antihypertensive activity, but at present, walnut residue is often regarded as waste or low value feed, fertilizer and other materials. The uneconomical use of walnut residue has hindered the development of the walnut industry to some extent. Effective utilization of walnut residue protein to develop bioactive peptides and other products is of great significance to realize the comprehensive utilization of walnut residue, improve the added value of by-products, and change the current low utilization rate of walnut residue. In this paper, the preparation, purification and structure identification of walnut protein bioactive peptides are reviewed, and different functional walnut active peptides (WBPs) are introduced. The potential effects of these bioactivities on human health and their different uses in food, medicine and other industries are discussed. The purpose is to provide reference information for the effective utilization of walnut residue resources and the development of walnut industry. Full article
(This article belongs to the Special Issue The Application of “Green” or Emerging Technologies for the Extraction of Bioactive Compounds from Food By-Products)
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