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Dear Colleagues,

Polyphenolic compounds are usually defined as a group of naturally occurring compounds containing multiple phenolic functionalities. Such compounds are commonly found in the plant kingdom, where they are responsible for flower coloration. Naturally occurring polyphenols are known to present numerous biological activities, e.g., they can be potential candidates for use as drugs in the treatment of diseases like AIDS, heart ailments, ulcer formation, bacterial infection, mutagenesis, and neural disorders.

Several separation techniques can be adopted for their analysis, such as capillary electrophoresis, gas chromatography, liquid chromatography, and supercritical fluid chromatography. Notably, reversed-phase liquid chromatography is considered as the “niche technique” for their determination.

This Special Issue aims to collect papers dealing with the analysis of bioactive polyphenolic compounds in food and natural products; in addition, a particular focus on new achievements in the field will be appreciated.

Dr. Francesco Cacciola
Dr. Katia Arena
Guest Editors

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Related Special Issue

Published Papers (1 paper)

Research

9 pages, 601 KiB

Open AccessArticle

Eliciting Polyphenols in Strawberry Leaves: Preliminary Experiments in Fragaria × ananassa cv. Festival

by Karla Salas-Arias, Andrea Irías-Mata, Laura Sánchez-Calvo, María Fernanda Brenes-Zárate, Ana Abdelnour-Esquivel, Fabián Villalta-Romero and Laura A. Calvo-Castro

Molecules 2024, 29(11), 2467; https://doi.org/10.3390/molecules29112467 - 24 May 2024

Viewed by 282

Abstract

Polyphenols are plant secondary metabolites that function mostly as a general stress-induced protective mechanism. Polyphenols have also gained interest due to their beneficial properties for human health. Strawberry leaves represent an agro-industrial waste material with relevant bioactive polyphenol content, which could be incorporated into circular economy strategies. However, due to the low quantities of polyphenols in plants, their production needs to be improved for cost-effective applications. The objective of this research was to compare polyphenol production in strawberry (Fragaria × ananassa cv. Festival) leaves in plants grown in greenhouse conditions and plants grown in vitro, using three possible elicitor treatments (UV irradiation, cold exposure, and cysteine). General vegetative effects were morphologically evaluated, and specific polyphenolic compounds were quantified by UHPLC-DAD-MS/MS. Gallic acid was the most abundant polyphenol found in the leaves, both in vivo and in vitro. The results showed higher amounts and faster accumulation of polyphenols in the in vitro regenerated plants, highlighting the relevance of in vitro tissue culture strategies for producing compounds such as polyphenols in this species and cultivar. Full article

(This article belongs to the Special Issue Exploring Bioactive Polyphenolic Compounds in Food and Natural Real-World Samples II)

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