Antioxidants from macroalgae: potential applications in human health and nutrition

Cornish, M. Lynn; Garbary, David J.

doi:10.4490/algae.2010.25.4.155

Cited by 243 publications

(122 citation statements)

References 127 publications

Supporting

Mentioning

108

Contrasting

Unclassified

Order By: Relevance

“…The harvesting of Dulse is a significant cottage industry in Nova Scotia (MacFarlane 1964, 1966, Ffrench 1974. The edible alga can be eaten dried or wet, and can be used in cooking (e.g., Rhatigan 2009), and its antioxidant properties may have medicinal benefits (e.g., Yuan et al 2009, Cornish andGarbary 2010). There have been no significant studies of the Dulse harvest in this area since MacFarlane (1966) and Ffrench (1974), and few ecological studies of Dulse have been conducted in this part of the Bay of Fundy.…”

Section: Introductionmentioning

confidence: 99%

A mathematical model of the commercial harvest of Palmaria palmata (Palmariales, Rhodophyta) on Digby Neck, Nova Scotia, Canada

Lukeman¹,

Beveridge²,

Flynn³

et al. 2012

ALGAE

Self Cite

View full text Add to dashboard Cite

A mathematical model of the commercial harvest of Palmaria palmata (Dulse) is presented based on a logistic model and field data collected on Digby Neck, Nova Scotia from 14 harvested shores during May to August, 2010. Field observations used to estimate model parameters included cover of Dulse before and after harvest from Dulse dominated boulders for which surface area was estimated, and from which fresh biomass of harvested Dulse was weighed. Over all the surveys the average harvest fraction was about 50%, and the total resource was about 1,600 g m -2. With growth rates in excess of 4% per day and a 50% harvest of the standing crop each month, the model suggests that the Dulse resource is sustainable at current harvest levels.

show abstract

Section: Introductionmentioning

confidence: 99%

A mathematical model of the commercial harvest of Palmaria palmata (Palmariales, Rhodophyta) on Digby Neck, Nova Scotia, Canada

Lukeman¹,

Beveridge²,

Flynn³

et al. 2012

ALGAE

Self Cite

View full text Add to dashboard Cite

show abstract

“…Several studies have shown that not only medical plants, but also algae contain beneficial non-nutritive agents such as polyphenols, chlorophylls, and sulfated polysaccharides, which possess antimutagenicity, anticarcinogenicity, and antioxidant activity (Cornish and Garbary, 2010;Lee et al, 2013). We previously demonstrated that the amounts of total phenolic compounds, total carbohydrates, and sulfates of the hot water extract were greater than those of raw materials (Thumvijit et al, 2013b).…”

Section: Discussionmentioning

confidence: 99%

Cancer Chemopreventive Effect of Spirogyra Neglecta (Hassall) Kützing on Diethylnitrosamine-Induced Hepatocarcinogenesis in Rats

Thumvijit¹,

Taya²,

Punvittayagul³

et al. 2014

Asian Pacific Journal of Cancer Prevention

View full text Add to dashboard Cite

Spirogyra neglecta, a freshwater green alga, is a local food in the northern and northeastern parts of Thailand. This investigation explored the anticarcinogenicity of S neglecta and its possible cancer chemopreventive mechanisms in rats divided into 14 groups. Groups 1 and 10 served as positive and negative control groups, respectively. Groups 1-9 were intraperitoneally injected with diethylnitrosamine (DEN) once a week for 3 weeks. Groups 10-14 received normal saline instead. One week after the last DEN injection, groups 2-5 were administered for 9 consecutive weeks various doses of S neglecta extract (SNE) and dried S neglecta (SND), mixed with basal diet. Groups 6-9 and 11-14 similarly were administered various doses of SNE and SND starting from the first week of the experiment. Administration of SNE and SND was not associated with formation of glutathione-Stransferase placental form (GST-P) positive foci in rat liver. SNE and SND during initiation phase significantly reduced the number of GST-P positive foci in rats injected with DEN. The number of GST-P also diminished in groups treated with SNE and SND after injection with DEN, except for the low dose extract group. SNE showed stronger anticarcinogenic potency than SND. Furthermore, SNE also decreased the number of Ki-67 positive cells. However, the numbers of TUNEL-positive cells in the liver of the SNE-treated groups were not statistically different from the controls. The GST activity in 50 mg/kg bw of SNE and 1% of SND groups was significantly increased as compared to the positive control. In conclusion, Spirogyra neglecta (Hassall) Kützing showed cancer chemopreventive properties at the early stages of diethylnitrosamine-induced hepatocarcinogenesis in rats. Possible inhibitory mechanisms include enhancement of the activities of some detoxifying enzymes and/or suppression of precancerous cells.

show abstract

“…More recently, its use as flakes and in various cooked foods is becoming more widespread (e.g., Rhatigan 2009). Various aspects of chemical composition have been evaluated including lipid content (Mishra et al 1993) and antioxidants (e.g., Yuan et al 2009, Cornish andGarbary 2010). There are two traditional areas for the commercial harvesting of P. palmata in eastern Canada: Grand Manan Island in New Brunswick, and Digby Neck in Nova Scotia (e.g., Ffrench 1974).…”

Section: Methodsmentioning

confidence: 99%

Population ecology of Palmaria palmata (Palmariales, Rhodophyta) from harvested and non-harvested shores on Digby Neck, Nova Scotia, Canada

Garbary¹,

Beveridge²,

Flynn³

et al. 2012

ALGAE

Self Cite

View full text Add to dashboard Cite

Population ecology of Palmaria palmata is described from the intertidal zone of Digby Neck and adjacent islands of Nova Scotia. The primary objectives were: to evaluate the difference in habitat specialization and population structure of P. palmata between harvest and non-harvest shores, and to characterize differences in thallus structure and frond sizes between epilithic and epiphytic populations. Harvest shores were gently sloping boulder fields with boulders typically about 0.5-1.0 m with dense cover of P. palmata on many of the rocks. Non-harvest shores (with or without P. palmata) consisted of boulders that were smaller or larger than harvest shores, or bedrock; when P. palmata was present on nonharvest sites it was typically epiphytic on other algae (e.g., Fucus spp., Mastocarpus stellatus, Devaleraea ramentacea). Harvestable epiphytic populations occurred only in high current areas. While there was little difference in average cover of P. palmata harvest and non-harvest shores (31.2 ± 13.7% vs. 19.4 ± 7.3%, mean ± standard deviation [SD]), the cover of P. palmata on harvest shores was highly skewed such that individual boulders often had >90% cover while adjacent rocks had little. Frond length of large fronds was greater on harvested shores, and mean frond density (g m -2 ) was three times higher than the mean density on the non-harvested shores. Frond lengths of entire epiphytic and epilithic frond complements of 119 thalli from harvest beaches showed no difference in mean size of the largest fronds, and no difference in frond number per holdfast when epiphytic and epilithic thalli were compared.Key Words: Digby Neck; Dulse; Nova Scotia; Palmaria palmata; Palmariales; population ecology; seaweed harvesting INTRODUCTIONThe red alga Palmaria palmata (Linnaeus) Weber et Mohr is widely distributed in the cold waters of the North Atlantic and Arctic Oceans (Irvine and Guiry 1983, Bird and Van der Meer 1993, Guiry and Guiry 2011. Despite its cold water affinities, P. palmata occurs in warm temperate waters far south as New Jersey in the western Atlantic Ocean (Taylor 1957) and Portugal in Europe, with localized large populations in northern Spain (Faes and Viejo 2003). Throughout its range P. palmata may be an epiphyte, and it typically occurs in the low intertidal and subtidal zones to depths of about 20 m (Irvine and Guiry 1983, Faes and Viejo 2003, Vadas et al. 2004).In eastern Canada P. palmata occurs from the Bay of Fundy through to the Gulf of St. Lawrence and the island of Newfoundland (Taylor 1957, Edelstein et al. 1970, Wilson et al. 1979, South and Hooper 1980, South et al. 1988. In the outer reaches of the Bay of Fundy, this species can become abundant, and it forms the basis of commercial harvests (MacFarlane 1964, 1966, Ffrench 1974, Chopin and Ugarte 2006. P. palmata has a long history Received December 26, 2011, Accepted February 29, 2012 *Corresponding Author E-mail: dgarbary@gmail.com Tel: +1-902-867-2164+1-902-867- , Fax: +1-902-867-2389 This is an Open Access article distributed under ...

show abstract

Antioxidants from macroalgae: potential applications in human health and nutrition

Cited by 243 publications

References 127 publications

A mathematical model of the commercial harvest of Palmaria palmata (Palmariales, Rhodophyta) on Digby Neck, Nova Scotia, Canada

A mathematical model of the commercial harvest of Palmaria palmata (Palmariales, Rhodophyta) on Digby Neck, Nova Scotia, Canada

Cancer Chemopreventive Effect of Spirogyra Neglecta (Hassall) Kützing on Diethylnitrosamine-Induced Hepatocarcinogenesis in Rats

Population ecology of Palmaria palmata (Palmariales, Rhodophyta) from harvested and non-harvested shores on Digby Neck, Nova Scotia, Canada

Contact Info

Product

Resources

About