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Förste F, Bauer L, Streeck C, Radtke M, Reinholz U, Kadow D, Keil C, Mantouvalou I. Quantitative Analysis and 2D/3D Elemental Imaging of Cocoa Beans Using X-ray Fluorescence Techniques. Anal Chem 2023; 95:5627-5634. [PMID: 36961956 DOI: 10.1021/acs.analchem.2c05370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2023]
Abstract
As an important raw material for the confectionery industry, the cocoa bean (Theobroma cacao L.) has to meet certain legal requirements in terms of food safety and maximum contaminant levels in order to enter the cocoa market. Understanding the enrichment and distribution of essential minerals but also toxic metals is of utmost importance for improving the nutritional quality of this economically important raw food material. We present three X-ray fluorescence (XRF) techniques for elemental bio-imaging of intact cocoa beans and one additional XRF technique for quantitative analysis of cocoa pellets. The interrelation of all the methods presented gives a detailed picture of the content and 3D-resolved distribution of elements in complete cocoa beans for the first time.
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Affiliation(s)
- Frank Förste
- Institute for Optics and Atomic Physics, Technical University of Berlin, Berlin 10623, Germany
| | - Leona Bauer
- Institute for Optics and Atomic Physics, Technical University of Berlin, Berlin 10623, Germany
- Helmholtz-Zentrum Berlin for Materials and Energy, Berlin 12489, Germany
| | - Cornelia Streeck
- Physikalisch-Technische Bundesanstalt, National Metrology Institute, Berlin 10587, Germany
| | - Martin Radtke
- Federal Institute for Materials Research and Testing (BAM), Berlin 12489, Germany
| | - Uwe Reinholz
- Federal Institute for Materials Research and Testing (BAM), Berlin 12489, Germany
| | | | - Claudia Keil
- Institute of Food Technology and Food Chemistry, Technical University of Berlin, Berlin 13355, Germany
| | - Ioanna Mantouvalou
- Helmholtz-Zentrum Berlin for Materials and Energy, Berlin 12489, Germany
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Shetaya WH, Bailey EH, Young SD, Mohamed EF, Antoniadis V, Rinklebe J, Shaheen SM, Marzouk ER. Soil and plant contamination by potentially toxic and emerging elements and the associated human health risk in some Egyptian environments. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2023; 45:359-379. [PMID: 34676511 DOI: 10.1007/s10653-021-01097-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Accepted: 09/03/2021] [Indexed: 06/13/2023]
Abstract
The aim of this work was to assess the origins, mobility, bioavailability and potential health risks of V, Cr, Co, As, Se, Mo, Cd, Sn and Sb, which are not sufficiently studied in the terrestrial environment of Egypt. This has been carried out by employing a combination of chemical fractionation, plants uptake, mathematical modeling and risk assessment approaches on a wide range of soils and plants sampled from industrial, urban and agricultural locations across Egypt. The contents of As, Cd, Sn and Sb were elevated in the soils of some urban and industrial locations within Cairo, although their soil geo-accumulation (Igeo) indices remained ≤ 2, indicating only moderate contamination. Selenium showed moderate to heavy contamination levels (Igeo up to 4.7) in all sampling locations, and Sb was highly elevated (Igeo = 7.1; extreme contamination) in one industrial location. Therefore, Se was the most important contributor to the pollution load followed by Sb and Cd. Both principle component analysis (of total content) and geochemical fractionation (by sequential extraction) suggested that V, Cr and Co are mostly of geogenic origin, while Se and Sb contents appear to be highly influenced by anthropogenic inputs. The most mobile and bioavailable element was Cd with a large non-residual fraction in all soils (76% of total Cd). The bio-concentration factors of Cd in leafy and fruiting plants were 50 times larger than other elements (except Mo) indicating preferential systematic plant uptake of Cd. Risk assessment models showed an overall low noncarcinogenic and carcinogenic risks to the population of Egypt due to the studied elements with only a few anomalies.
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Affiliation(s)
- Waleed H Shetaya
- Air Pollution Research Department, Environmental Research Division, National Research Centre, 33 El-Bohouth St., Dokki, 12622, Giza, Egypt.
| | - Elizabeth H Bailey
- Division of Agricultural and Environmental Sciences, School of Biosciences, University of Nottingham, Sutton Bonington, Leicestershire, LE12 5RD, UK
| | - Scott D Young
- Division of Agricultural and Environmental Sciences, School of Biosciences, University of Nottingham, Sutton Bonington, Leicestershire, LE12 5RD, UK
| | - Elham F Mohamed
- Air Pollution Research Department, Environmental Research Division, National Research Centre, 33 El-Bohouth St., Dokki, 12622, Giza, Egypt
| | - Vasileios Antoniadis
- Department of Agriculture Crop Production and Rural Environment, University of Thessaly, Volos, Greece
| | - Jörg Rinklebe
- School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste Management, Laboratory of Soil- and Groundwater-Management, University of Wuppertal, Pauluskirchstraße 7, 42285, Wuppertal, Germany
- Department of Environment, Energy and Geoinformatics, Sejong University, Seoul, 05006, Republic of Korea
- International Research Centre of Nanotechnology for Himalayan Sustainability (IRCNHS), Shoolini University, Solan, Himachal Pradesh, 173212, India
| | - Sabry M Shaheen
- School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste Management, Laboratory of Soil- and Groundwater-Management, University of Wuppertal, Pauluskirchstraße 7, 42285, Wuppertal, Germany.
- Faculty of Meteorology, Environment and Arid Land Agriculture, Department of Arid Land Agriculture, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
- Faculty of Agriculture, Department of Soil and Water Sciences, University of Kafrelsheikh, Kafr El-Sheikh, 33 516, Egypt.
| | - Ezzat R Marzouk
- Division of Soil and Water Sciences, Faculty of Environmental Agricultural Sciences, Arish University, North Sinai, 45516, Egypt.
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Tolerance and Cadmium (Cd) Immobilization by Native Bacteria Isolated in Cocoa Soils with Increased Metal Content. MICROBIOLOGY RESEARCH 2022. [DOI: 10.3390/microbiolres13030039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Twelve cadmium native bacteria previously isolated in soils of cocoa farms located in the western Colombian Andes (Santander), and tolerant to 2500 µM CdCl2 (120 mg Cd/L), were chosen in order to test their tolerance and Cd immobilization using liquid culture medium (Nutritive broth) at different concentrations of heavy metals. Furthermore, in the greenhouse experiments, the strains Exiguobacterium sp. (11-4A), Klebsiella variicola sp. (18-4B), and Enterobacter sp. (29-4B) were applied in combined treatments using CCN51 cacao genotype seeds grown in soil with different concentrations of Cd. All bacterial strains’ cell morphologies were deformed in TEM pictures, which also identified six strain interactions with biosorption and four strain capacities for bioaccumulation; FT-IR suggested that the amide, carbonyl, hydroxyl, ethyl, and phosphate groups on the bacteria biomass were the main Cd binding sites. In the pot experiments, the concentration of Cd was distributed throughout the cacao plant, but certain degrees of immobilization of Cd can occur in soil to prevent an increase in this level in roots with the presence of Klebsiella sp.
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