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Corn starch systems as carriers for yerba mate (Ilex paraguariensis) antioxidants

Paper ID Volume ID Publish Year Pages File Format Full-Text
18939 43037 2015 10 PDF Available
Title
Corn starch systems as carriers for yerba mate (Ilex paraguariensis) antioxidants
Abstract

•Corn starches can vehicle yerba mate (Ilex paraguariensis) antioxidants into food.•Starch was treated with high hydrostatic pressure to increase loading capacity.•Treated starches incorporated the highest amount of yerba mate polyphenols.•Native starch could be an appropriate antioxidant carrier as well.•High pressure maintained the antioxidant activity and the yerba mate polyphenols profile.

Corn starch's ability to bind and carry a yerba mate extract with strong antioxidant properties was explored in this paper. The starch was treated by high hydrostatic pressure to increase its loading capacity and scanning electron microscopy revealed that the high pressure treatment altered the shape of starch granules and changed their surface appearance. High pressure caused partial granule gelatinization as determined by calorimetric measurements, also increasing the granule specific surface area, as quantified by nitrogen adsorption. This increase in surface was due to the generation of pores, which favored the adsorption of the yerba mate hydrosoluble polyphenols. The yerba mate polyphenol concentration in the starch carriers was determined by HPLC-MS and its antioxidant activity was measured by the DPPH radical and photochemiluminiscense (PCL) methods. Treated starches incorporated a higher amount of yerba mate polyphenols, however, native starch could be an appropriate antioxidant carrier as well. Furthermore, it was found that the antioxidant activity was maintained after high pressure treatment without changing the yerba mate polyphenols profile.

Keywords
Yerba mate; Encapsulation; Corn starch; High hydrostatic pressure; Antioxidant activity; Specific surface area
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Corn starch systems as carriers for yerba mate (Ilex paraguariensis) antioxidants
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Publisher
Database: Elsevier - ScienceDirect
Journal: Food and Bioproducts Processing - Volume 94, April 2015, Pages 463–472
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us