Variability of Iodine Content in Common Commercially Available Edible Seaweeds

Teas, Jane; Pino, Sam; Critchley, Alan T.; Braverman, Lewis E.

doi:10.1089/thy.2004.14.836

Cited by 238 publications

(176 citation statements)

References 22 publications

(12 reference statements)

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“…Küpper et al, 1998;Teas et al, 2004;Martinelango et al, 2006). But the variation in I 2 emission rates is proportionately far greater than the species-dependent differences in iodine content.…”

Section: Incubation Studies On Whole Seaweed Plants: Species-dependenmentioning

confidence: 99%

Spectroscopic studies of molecular iodine emitted into the gas phase by seaweed

et al. 2010

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Abstract. Time profiles of molecular iodine emissions from seven species of seaweed have been measured at high time resolution (7.5 s) by direct spectroscopic quantification of the gas phase I 2 using broadband cavity enhanced absorption spectroscopy. Substantial differences were found between species, both in the amounts of I 2 emitted when the plants were exposed to air and in the shapes of their emission time profiles. Two species of kelp, Laminaria digitata and Laminaria hyperborea, were found to be the most potent emitters, producing an intense burst of I 2 when first exposed to air. I 2 was also observed from Saccharina latissima and Ascophyllum nodosum but in lower amounts and with broader time profiles. I 2 mixing ratios from two Fucus species and Dictyopteris membranacea were at or below the detection limit of the present instrument (25 pptv). A further set of experiments investigated the time dependence of I 2 emissions and aerosol particle formation when fragments of L. digitata were exposed to desiccation in air, to ozone and to oligoguluronate stress factors. Particle formation occurred in all L. digitata stress experiments where ozone and light were present, subject to the I 2 mixing ratios being above certain threshold amounts. Moreover, the particle number concentrations closely tracked variations in the I 2 mixing ratios, confirming the results of previous studies that the condensable particle-forming gases derive from the photochemical oxidation of the plant's I 2 emissions. This work also supports the theory that particle nucleation in the coastal atmosphere occurs in "hot-spot" regions of locally elevated concentrations of condensable gases: the greatest atmospheric concentrations of I 2 and hence of condensable iodine oxides are likely to be above plants of the most efficiently emitting kelp species and localised in time to shortly after these seaweeds are uncovered by a receding tide.

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Section: Incubation Studies On Whole Seaweed Plants: Species-dependenmentioning

confidence: 99%

Spectroscopic studies of molecular iodine emitted into the gas phase by seaweed

et al. 2010

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“…When considering seafood as an important source of iodine both red and brown algae are generally richer in iodine than green algae . According to Teas et al (2004) Rhodophyceae contained 10 to 100 mg/kg of iodine similar to the content of Palmaria palmata, while species like Porphyra umbilicalis and Undaria pinnatifida had iodine contents of 17.3 and 22 to 30 mg/kg respectively. The results of this study show that M. senegalense is a good source of iodine with an higher average concentration (31.16 mg/kg) than the species mentioned above.…”

Section: Resultsmentioning

confidence: 94%

“…In this context, M. senegalense should be promoted as a new local food. In fact edible seaweeds present many advantages such us the quality of their fatty acids content (Khotimchenko and Levchenko, 1997), traces metals such us Fe, Zn, Cu (Robledo and Pelegrin, 1997) or iodine content (Teas et al, 2004;Zava and Zava, 2011). In addition, some reports have shown quality protein content in some species including Chlorophyta and Rhodophyta (Galland-Irmouli et al, 1999;Fleurence and Guéant, 1999).…”

Section: Resultsmentioning

confidence: 99%

Nutritional composition of Meristotheca senegalense (Rhodophyta): A new nutrient source

Yagame¹,

Mensah²,

Cissé³

et al. 2017

Afr. J. Food Sci.

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Macroalgae are used in diverse global regions. Meristotheca senegalense J. Feldmann, a macroalga species found in a Senegalese bay, was the subject of this study focusing on the chemical and mineral composition. The present study was done in order to evaluate the potential of this macroalgal resource for biomass development and contribution to the economy in Senegal. The results of this study showed that M. senegalense J. Feldmann was relatively a good source of nutrients including fiber (6.67 ± 0.7%) and protein (6.37 ± 0.8%). Mineral analysis also showed significant concentrations of magnesium (216.87 ±12.9 mg/100 g), calcium (81.6 ± 17.5 mg/100 g), iodine (31.16 ± 1.5 mg/kg) and iron (28.13 ± 2.15 mg/100 g). However, zinc and copper 3.31 ± 0.26 and 2.43 ± 0.13 mg/100 g respectively were found at relatively low concentrations. Interestingly, the vitamin B12 content was significant with a content of 20 ± 1.0 mg/kg, potentially allowing for the use of the alga as a supplemental. The nutrient concentrations reported for M. senegalense J. Feldmann suggests that its cultivation and harvest can be a source of diversification in the activities of fishermen. In terms of food consumption, the results also showed that the red alga used in this study can be added to human diets as supplementation and might also be F

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“…For many decades, seaweeds were the primary sources of iodine for medicinal purpose. The total iodine content in Sargassum species was found to be 30 µg/g [18].…”

Section: Discussionmentioning

confidence: 94%

Effect of Sargassum Ilicifolium on Ovogenesis in Pcos Induced Rats

Anbu

Krishnan

Shivalingappa

et al. 2016

Asian J Pharm Clin Res

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Objective: This study was conducted to evaluate the effect of Sargassum ilicifolium on testosterone-induced polycystic ovary syndrome (PCOS) in rats.Methods: Female Wistar albino rats were divided into 6 groups consisting of 6 rats each. PCOS was induced in all the animals except normal group on the administration of testosterone (2 mg/100 g) for 21 days daily. After PCOS induction, the standard group rats were treated with clomiphene citrate (CC) (1 mg/kg. p.o.). The test groups were treated with 100, 200, and 400 mg/kg of ethanolic extract of S. ilicifolium orally, and normal animals were administered 2% carboxymethyl cellulose (2 ml/kg), respectively, for 21 days during induction and treatment period various parameters such as estrus cycle, histopathology, hormonal, and biochemical assays have been evaluated. Further to confirm the enhanced fertility rate, the rats were mated, and the litter size was observed. Results:The results revealed the normalcy in estrus cycle, hormonal, biochemical, and histopathological parameters. The litter size was increased significantly compared to control. Conclusion:Overall, from the obtained results, it is determined that the S. ilicifolium exhibited a good antiandrogenic effect by reducing the testosterone levels in PCOS-induced conditions.

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Variability of Iodine Content in Common Commercially Available Edible Seaweeds

Cited by 238 publications

References 22 publications

Spectroscopic studies of molecular iodine emitted into the gas phase by seaweed

Spectroscopic studies of molecular iodine emitted into the gas phase by seaweed

Nutritional composition of Meristotheca senegalense (Rhodophyta): A new nutrient source

Effect of Sargassum Ilicifolium on Ovogenesis in Pcos Induced Rats

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