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Analysis, Characterization and Antioxidant Properties of Natural Products

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Chemical and Molecular Sciences".

Deadline for manuscript submissions: 20 May 2025 | Viewed by 825

Special Issue Editors

Sub-Institute of Agriculture and Food Standardization, China National Institute of Standardization, Beijing 100191, China
Interests: reference material; HPLC; HPLC-MS/MS; natural product; agricultural product; food
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Guest Editor
Department of Science and Environment, Roskilde University, DK-4000 Roskilde, Denmark
Interests: isotope effects in biological systems; intramolecular hydrogen bonding; tautomerism; natural products; theoretical calculations of spectroscopic properties
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Natural products refer to the components or metabolites of animals, plant extracts, insects, marine organisms, and microorganisms, as well as many endogenous chemical components in human and animal bodies. With the increasing emphasis on health, there is a growing demand for various bioactive natural products, and more natural products are being discovered and utilized.

In this field of research, scientists use various analytical techniques to identify and characterize the chemical components of natural products. These techniques may include chromatography, spectroscopy, nuclear magnetic resonance (NMR), and mass spectrometry, among others. By understanding the chemical structure and composition of these compounds, researchers can gain insights into their potential antioxidant activities.

The antioxidant properties of natural products are often evaluated through various in vitro and in vivo assays. In vitro assays, such as DPPH radical scavenging, ABTS radical scavenging, and ferric reducing antioxidant power (FRAP) assays, measure the ability of a compound to scavenge free radicals or reduce metal ions. In vivo assays, on the other hand, involve the administration of a natural product to living organisms to study its effects on markers of oxidative stress and antioxidant defense systems.

This Special Issue aims to promote research works focused on the analytical techniques, characterization methods, and antioxidant properties research of natural products. All research articles and reviews dealing with extraction, characterization, isolation, and purification, but also the synthesis of natural and nature-derived compounds and their antioxidant properties evaluations in vitro and in vivo, are welcome. Findings dealing with the application of novel natural antioxidants in the maintenance of human well-being and in the prevention of disease are particularly welcome.

Dr. Tao Lan
Prof. Dr. Poul Erik Hansen
Guest Editors

Manuscript Submission Information

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 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

  • natural products
  • analysis
  • characterization
  • application
  • reference material
  • antioxidant
  • health food
  • dietary supplements

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Published Papers (1 paper)

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Research

15 pages, 1026 KiB  
Article
Quality Assessment of Edible Plant-Based Fixed Oils Using Different Analytical Techniques and Machine Learning Approaches
by Irini F. Strati, Konstantinos Tsiantas, Angeliki Psouni, Georgia Ladika, Dionisis Cavouras and Vassilia J. Sinanoglou
Appl. Sci. 2024, 14(22), 10305; https://doi.org/10.3390/app142210305 - 9 Nov 2024
Viewed by 440
Abstract
Plant-based carrier oils are constantly gaining popularity for their beneficial health effects on human organisms, thus shifting consumers’ preferences to alternative options in the oil market. The purpose of the study was to evaluate the quality characteristics of twenty-six edible plant-based fixed oils [...] Read more.
Plant-based carrier oils are constantly gaining popularity for their beneficial health effects on human organisms, thus shifting consumers’ preferences to alternative options in the oil market. The purpose of the study was to evaluate the quality characteristics of twenty-six edible plant-based fixed oils via chromatographic, chromatic, and spectroscopic techniques, suggesting their potential use as complementary edible oil sources. Palmitic, stearic, oleic, linoleic, and a-linolenic acids were found in considerable proportions, whereas the majority of oils possessed unsaturated (UFA)/saturated (SFA) fatty acid ratio greater than 1.6, suggesting their function in lowering blood pressure and preventing cardiovascular disease. Linseed, chia seed, macadamia, and canola oils provide a balanced intake of n-6 and n-3 polyunsaturated fatty acids (PUFA) within the range of 1:1 to 5:1. Oxidative stability was inversely related to oils’ PUFA content, with linseed, chia seed, pine cone, and walnut oils being the least stable oils against oxidation. Chlorophyll content in all oils was below the limit (50 mg/kg), preventing oxidation in the presence of light, whereas the highest values of b-carotene were noticed in soybean, linseed, and canola oils (61.18, 60.42, and 60.12 ppm, respectively). The application of machine learning algorithms for analyzing ATR-FTIR band intensities and FA proportions via discriminant analysis succeeded in discriminating pulp from seed oils, with a classification accuracy of 96.0% and 88.0%, respectively. Full article
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