Naslov
Essential micronutrient levels in medicinal plants: A comparison between TXRF, FAAS and ICP-OES

Autori
Marguí, Eva ; Dalipi, Rogerta ; Sangiorgi, Emanuele ; Bival Štefan, Maja ; Sladonja, Katarina ; Rogga, Vanessa ; Jablan, Jasna

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
BIOMEDIAG Subgroup Workshop - Book of Abstracts / - , 2021, 10-10

Skup
BIOMEDIAG Subgroup Workshop

Mjesto i datum
Online, 21.04.2021. - 23.04.2021

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
micronutrient, plant, TXRF, FAAS, ICP-OES

Sažetak
It is common knowledge that one of the oldest methods of treating disease is the ingestion of herbal teas. With the increasing interest in the therapeutic benefits of herbal products, there is also growing concern about the safety and toxicity of natural herbs and preparations available in the market. Herbal materials purchased from local herbalists are usually not subject to strict quality control by regulatory agencies and often contain significant amounts of elements that may adversely affect the health of the consumer. Therefore, the measurement of elements in herbal teas is of great importance to consumers not only from a nutritional point of view, but also to assess their quality and evaluate the potential risk-benefit ratio of their consumption [1, 2]. Among the many components of particular importance, the elements have attracted much attention for decades. As awareness and concern about elemental composition in general increases year by year, elemental analysis is becoming increasingly important. With this in mind, the development of rapid, simple and sensitive methods that can be used in routine analysis is of particular interest. Total reflection X-ray fluorescence (TXRF) is a technique for elemental analysis that has recently become very attractive in biological fields. TXRF offers some advantages compared to AAS or ICP, such as the possibility to analyse vegetation samples with a minimal sample treatment (using a suspension of the powdered material with non-hazardous reagents) or obtaining rapid and screening information of the multielemental composition of vegetation samples. Other advantages include a simple quantification approach over a wide dynamic range by internal standardisation and low operating costs [3]. This study compares the results obtained in determining the content of essential elements such as Mn, Fe, Cu and Zn in vegetation samples using different analytical approaches including suspension preparation and TXRF analysis (equipped with Mo and W X-ray tubes), as well as the most commonly used spectroscopic methods in the field of plant analysis such as acid digestion combined with atomic emission (ICP-OES) and absorption spectrometry (FAAS). The study provides an overview of the potential and limitations of TXRF compared to FAAS and ICP-OES methods for the determination of essential elements in vegetation samples.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Farmacija

POVEZANOST RADA