Tea and Iron Metabolism

Bouglé, Dominique

doi:10.1016/b978-0-12-384937-3.00023-9

Cited by 3 publications

(3 citation statements)

References 68 publications

(50 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The small bioavailable fractions of minerals during intestinal digestion may partially explain why Fe from pulses continue to show poor bioavailability in human studies, even in anaemic individuals where absorptive mechanisms are upregulated (DellaValle, Glahn, Shaff, & O'Brien, ; Petry et al., ). As pulse hulls are known to contain up to 90% of the phenolic compounds (Dueñas, Hernández, & Estrella, ; Ramdath & Tsao, ), the poor bioavailability of Fe and other cations may be attributed to the formation of insoluble complexes by polyphenols during intestinal digestion, as polyphenols are good chelators of both Fe 2+ and Fe 3+ (Bouglé, ). However, further studies are required to confirm whether the colon can facilitate the absorption of minerals other than Ca, Mg, and K, where some elements (e.g., Zn) have been shown promise in animal studies to be absorbed through the colon (Gopalsamy et al., ).…”

Section: Resultsmentioning

confidence: 99%

Bioaccessibility of Some Essential Minerals in Three Selected Australian Pulse Varieties Using an In Vitro Gastrointestinal Digestion Model

Zhang

Panozzo

Hall

et al. 2018

Journal of Food Science

View full text Add to dashboard Cite

Australian produced pulse grains are exported worldwide, predominantly to developing countries where severe essential mineral deficiencies putatively subsist. An in vitro digestion model that simulates human gastric, intestinal and colonic digestion and fermentation, was used to examine the bioaccessibility of Fe, Mg, K, Ca, P, Zn, Mn, and Cu in commercially available cultivars of Australian field pea, lentil, and sweet lupin. The hull and dehulled seeds were prepared following a traditional cooking method, and quantities of bioaccessible minerals were assessed at each stage of in vitro digestion using ICP‐OES elemental analyses. Results revealed that dehulled field pea (100 g dry weight) had the highest bioaccessible quantity of Fe (2.44 ± 0.73 mg), K (717.10 ± 56.66 mg), P (272.88 ± 9.30 mg), Zn (1.72.028 ± 0.28 mg), and Cu (0.41 ± 0.02 mg). Dehulled lupin was the best source of Mg (138.62 ± 1.53 mg) and Mn (1.28 ± 0.0.06 mg), and lentil hull showed the greatest Ca bioaccessible quantity (116.33 ± 16.73 mg/100 g dry weight). Additionally, the fed state digestion (11.7 mg bile/mL sample) increased the bioaccessibility of all elements significantly (P < 0.05) compared to fasted (1.95 mg bile/mL sample), except for Zn and Mn in lupin and lentils. These results demonstrated that dehulled seeds possess higher mineral bioaccessibility on a percentage basis compared with hulls, and that the fed state of in vitro digestion generally improved the mineral solubility significantly (P < 0.05). Practical Application This research aimed to assess the prospective biological accessibility of various essential elements in three commercially available Australian pulses. Results of the study provided an insight into the contents of essential minerals in Australian pulses and illustrated the impact of traditional cooking of dehulled pulses on these minerals bioaccessibility. These findings will provide the consumers with information about some nutritional aspects of major Australian pulses.

show abstract

Section: Resultsmentioning

confidence: 99%

Bioaccessibility of Some Essential Minerals in Three Selected Australian Pulse Varieties Using an In Vitro Gastrointestinal Digestion Model

Zhang

Panozzo

Hall

et al. 2018

Journal of Food Science

View full text Add to dashboard Cite

show abstract

“…Regarding sex, females are the primary consumers of botanical supplements—including those marketed as weight‐loss supplements, like GTE—and are more susceptible to potential side effects than males in both human and animal studies (Mazzanti et al, 2009). In relation to fed versus fasting state, many dieticians recommend consuming green tea and GTE apart from meals because they interfere with iron bioavailability (Bougle, 2013). However, consuming GTE supplements in the fasted state increases the risk of hepatotoxicity and GI side effects (Chow et al, 2005; Kapetanovic et al, 2009), which is likely due to the fivefold increase in the bioavailability of catechins than when consumed in the fed state in humans (Chow et al, 2005) and animals (Isbrucker et al, 2006a).…”

Section: In Vivo Investigations Of (Poly)phenol Toxicity Following Oral Administrationmentioning

confidence: 99%

“…The main contributors to total (poly)phenol intake are tea, coffee, red wine, fruits, and vegetables, though regional and cultural preferences, vary widely. These differences in dietary patterns alter the dietary (poly)phenols to which individuals are exposed, leading to qualitative as well as quantitative differences in (poly)phenol intakes among different cultures (Del Bo et al, 2019;Knaze et al, 2012;Zamora-Ros et al, 2011a, 2011b, 2016. For example, coffee drinkers consume large quantities of chlorogenic acids (i.e., phenolic acids), green tea drinkers consume large amounts of catechins (i.e., flavan-3-ols), and fruit and vegetable consumers have widely varying intakes based on the fruits and vegetables in their diets (e.g., anthocyanin-rich berries or isoflavone-containing soy products).…”

Section: (Poly)phenol-rich Products Are Diversifying and Intakes Are ...mentioning

confidence: 99%

(Poly)phenol toxicity in vivo following oral administration: A targeted narrative review of (poly)phenols from green tea, grape, and anthocyanin‐rich extracts

Cladis

Weaver

Ferruzzi

2021

Phytotherapy Research

View full text Add to dashboard Cite

Fruit‐ and vegetable‐derived (poly)phenols are secondary plant metabolites that may have beneficial effects on human health when consumed regularly. Recent years have seen rapid growth in both consumer demand for and research interest in (poly)phenol‐rich dietary supplements, natural colorants, and functional foods. As these products continue to enter the marketplace and (poly)phenol intake patterns change from traditional food products to these sources, attention must be paid to the potential for toxicity from consuming elevated doses of (poly)phenols. To date, much remains unknown regarding the safety of high doses of (poly)phenols, especially in vivo. In this targeted narrative review, we summarize evidence from in vivo investigations of (poly)phenol toxicity after oral administration of green tea extracts, grape‐derived phenolics, and anthocyanin‐rich extracts. There is limited evidence of overt toxicity from oral ingestion of these (poly)phenol‐rich sources, though more research on the safety of high doses—as well as defining what constitutes a “high” dose of both individual and complex mixtures of (poly)phenols—is needed before these observations can be used to create dietary guidance for consumers.

show abstract

Synthesis, antioxidant activity and antibacterial study of EGCG complexes with iron(III) ions

Alhafez

Kheder

AlJoubbeh

2022

Results in Chemistry

View full text Add to dashboard Cite

Tea and Iron Metabolism

Cited by 3 publications

References 68 publications

Bioaccessibility of Some Essential Minerals in Three Selected Australian Pulse Varieties Using an In Vitro Gastrointestinal Digestion Model

Bioaccessibility of Some Essential Minerals in Three Selected Australian Pulse Varieties Using an In Vitro Gastrointestinal Digestion Model

(Poly)phenol toxicity in vivo following oral administration: A targeted narrative review of (poly)phenols from green tea, grape, and anthocyanin‐rich extracts

Synthesis, antioxidant activity and antibacterial study of EGCG complexes with iron(III) ions

Contact Info

Product

Resources

About