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Antioxidant extract from brown macroalgae and method for obtaining same

A technology of antioxidants and extracts, applied in the field of extracting antioxidants

Inactive Publication Date: 2016-03-02
UNIVERSITY OF SANTIAGO DE COMPOSTELA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these processes generate residues that are not permitted in food and cosmetics, such as methanol or organohalogen compounds

Method used

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  • Antioxidant extract from brown macroalgae and method for obtaining same
  • Antioxidant extract from brown macroalgae and method for obtaining same
  • Antioxidant extract from brown macroalgae and method for obtaining same

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Embodiment Construction

[0023]In a specific embodiment, the invention relates to an aqueous antioxidant extract obtained from brown macroalgae, characterized by a) a sugar content of between 33 and 156 mg glucose per gram of lyophilizate; b) fucoidan A content of between 44 and 118 mg of sulfate per gram of lyophilizate, said fucoidan expressed as total sulfate after digestion of the sample; c) a content of fucoidan between 12 and 62.4 mg equivalent per gram of lyophilizate Phloroglucinol, the brown algae polyphenols expressed as phloroglucinol; and d) the content of alginic acid is between 10 and 55 mg equivalents of glucuronic acid per gram of lyophilizate.

[0024] In another aspect, the present invention relates to a cosmetic and / or food composition comprising the target antioxidant extract of the present invention.

[0025] The application examples of the method for extracting antioxidants from Bacteroides are mentioned by way of example and without limiting the scope of protection thereof. The...

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Abstract

The invention relates to a method for obtaining antioxidant extracts from macroalgae using ultrasound-assisted continuous aqueous extraction. The process can be performed using fresh algae or dry algae, after resuspending same in water. A suspension of alga in water is prepared with a solid concentration of 10% to 30%. The mixture is fed to an ultrasonic breakdown system. The extract is filtered and lyophilised, obtaining total polyphenol concentrations of 62.4 mg eq. of phloroglucinol / g of lyophilizate with Bifurcaria bifurcata and 44 mg eq. of phloroglucinol / g of lyophilizate with Ascophyllum nodosum. The extract can be used as an ingredient in cosmetic and food formulations.

Description

technical field [0001] The present invention relates to the extraction of compounds from macroalgae. More specifically, the present invention relates to the extraction of antioxidants from brown macroalgae. Background technique [0002] Antioxidants are secondary metabolites present in macroalgae, plants and especially fruits. They are compounds that inhibit or prevent the oxidation of substrates. In the food, pharmaceutical and cosmetic industries, mainly synthetic antioxidant compounds such as Butylated Hydroxytoluene (BHT), Propyl Gallate or Butylated Hydroxyanisole (BHA) are used. Natural antioxidants, like those derived from grape extract, rosemary extract, cocoa extract, etc., are becoming better accepted for their low toxicity and high antioxidant activity. A large family of antioxidant compounds are the phlorotannins present in macroalgae, which show good antioxidant activity. [0003] Several protocols for the extraction of brown algae polyphenols have been prop...

Claims

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Application Information

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IPC IPC(8): A61K8/96A23L33/105A61K36/03
CPCA23V2002/00A23V2200/00A61K8/347A61K36/03A61K2236/00A61K2800/10A61K2800/522A61K2800/82A61K2800/84A61Q19/00A23L33/105A23L17/60A61K8/9711A61K8/9789A23V2200/02A23V2250/202A61K8/96A23L33/10A23L3/3463
Inventor J·西内罗托雷斯M·桑切斯格雷罗M·J·努涅斯加西亚
Owner UNIVERSITY OF SANTIAGO DE COMPOSTELA
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