Title |
The α-amylase and α-glucosidase inhibitory effects of Irish seaweed extracts
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Published in |
Food Chemistry, May 2013
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DOI | 10.1016/j.foodchem.2013.04.123 |
Pubmed ID | |
Authors |
Sinéad Lordan, Thomas J. Smyth, Anna Soler-Vila, Catherine Stanton, R. Paul Ross |
Abstract |
To date, numerous studies have reported on the antidiabetic properties of various plant extracts through inhibition of carbohydrate-hydrolysing enzymes. The objective of this research was to evaluate extracts of seaweeds for α-amylase and α-glucosidase inhibitory effects. Cold water and ethanol extracts of 15 seaweeds were initially screened and from this, five brown seaweed species were chosen. The cold water and ethanol extracts of Ascophyllum nodosum had the strongest α-amylase inhibitory effect with IC50 values of 53.6 and 44.7 μg/ml, respectively. Moreover, the extracts of Fucus vesiculosus Linnaeus were found to be potent inhibitors of α-glucosidase with IC50 values of 0.32 and 0.49 μg/ml. The observed effects were associated with the phenolic content and antioxidant activity of the extracts, and the concentrations used were below cytotoxic levels. Overall, our findings suggest that brown seaweed extracts may limit the release of simple sugars from the gut and thereby alleviate postprandial hyperglycaemia. |
X Demographics
Geographical breakdown
Country | Count | As % |
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Netherlands | 1 | 25% |
Canada | 1 | 25% |
United States | 1 | 25% |
Unknown | 1 | 25% |
Demographic breakdown
Type | Count | As % |
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Members of the public | 3 | 75% |
Practitioners (doctors, other healthcare professionals) | 1 | 25% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Mexico | 2 | <1% |
Portugal | 1 | <1% |
Denmark | 1 | <1% |
Brazil | 1 | <1% |
Unknown | 380 | 99% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Master | 70 | 18% |
Student > Bachelor | 65 | 17% |
Student > Ph. D. Student | 50 | 13% |
Researcher | 40 | 10% |
Student > Doctoral Student | 15 | 4% |
Other | 58 | 15% |
Unknown | 87 | 23% |
Readers by discipline | Count | As % |
---|---|---|
Agricultural and Biological Sciences | 116 | 30% |
Biochemistry, Genetics and Molecular Biology | 35 | 9% |
Chemistry | 31 | 8% |
Pharmacology, Toxicology and Pharmaceutical Science | 26 | 7% |
Medicine and Dentistry | 16 | 4% |
Other | 46 | 12% |
Unknown | 115 | 30% |