<i>Ilex paraguariensis</i>(A. St.-Hil.) leaf infusion decreases iron absorption in patients with hereditary hemochromatosis: a randomized controlled crossover study

Pagliosa, Cristiane Manfé; Vieira, Francilene Gracieli Kunradi; Dias, Bruno Vieira; Franco, Vivian Karla Brognoli; Ramos, Hanna Pillmann; Silva, Edson Luiz da

doi:10.1039/d1fo00482d

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“…The sustained and fast growth of modern industry has led to severe environmental contamination that has had a severe influence on the continuing progress of the whole community; in particular, water pollution has become the primary focus of the array of global environmental problems. , The main contaminants in water resources include various anions and cations, organic solvents and dyes, antibiotics, and microorganic pollutants, which pose latent health risks to living things. − In particular, heavy metal ions are some of the most common water pollutants, because they are highly environmentally poisonous and oncogenic and they bioaccumulate. They easily accumulate in organisms via the food cycle and destroy the regular physical activities of organisms, producing a great threat to the environment and humans.…”

Section: Introductionmentioning

confidence: 99%

Porphyrin-Based Conjugated Microporous Polymers for Highly Efficient Adsorption of Metal Ions

et al. 2022

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The capture and elimination of anions and cations from water have attracted a great deal of attention and are quite vital for clean production and environmental remediation. In this work, we present the synthesis of four porphyrin (Por)-based conjugated microporous polymers (CMPs, namely, Por-CMP-1–4), which were produced through a Sonogashira–Hagihara linked response using porphyrin and acetylene aromatic compounds as building blocks and used as absorbents to eliminate metal ions from water. The as-synthesized Por-CMP-1–4 exhibit an amorphous porous structure and outstanding caloric and physicochemical properties. Taking advantage of their larger specific surface areas, i.e., 541.47, 614.58, 382.38, and 677.90 m2 g–1 for Por-CMP-1–4, respectively, and their chelating active site that originated from the porphyrin ring, Por-CMP-1–4 show better Zn2+, Cu2+, and Pb2+ adsorption ability. Among them, Por-CMP-3 has the greatest adsorbability of 640 mg g–1 for Zn2+, with an adsorption efficiency of 80%, whereas its adsorption capacities for Cu2+ and Pb2+ ions were both 334 mg g–1, with an adsorption efficiency of 42% for Cu2+ and Pb2+. Employing Por-CMP-3 as a representative example, its adsorption kinetics has been systematically investigated. The adsorption behavior of Por-CMP-3 with respect to the Zn2+ ion is shown to exhibit pseudo-first-order kinetics and Langmuir isotherm modes. Meanwhile, the adsorption mechanism is discussed in detail, and it was thought it might be chelation, in which the nitrogen atoms with a single pair of electrons on the porphyrin ring interacted with metal ions to form stable chelation coordination bonds, thus removing metal ions selectively and effectively. Furthermore, Por-CMP-3 exhibited good reusability, retaining 60% of its Zn2+ removal rate after four continuous adsorptions.

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Section: Introductionmentioning

confidence: 99%

Porphyrin-Based Conjugated Microporous Polymers for Highly Efficient Adsorption of Metal Ions

et al. 2022

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Ilex paraguariensis(A. St.-Hil.) leaf infusion decreases iron absorption in patients with hereditary hemochromatosis: a randomized controlled crossover study

Abstract: The acute intake of Ilex paraguariensis leaf infusion significantly inhibited the absorption of non-heme iron in hereditary hemochromatosis patients with the HFE genotype and should be considered as a potential adjuvant for iron overload control.

Cited by 1 publication

References 35 publications

Porphyrin-Based Conjugated Microporous Polymers for Highly Efficient Adsorption of Metal Ions

Porphyrin-Based Conjugated Microporous Polymers for Highly Efficient Adsorption of Metal Ions

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