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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Effect of α-lactalbumin and β-lactoglobulin hydrolysates on markers of metabolic syndrome

Lagace, Melissa 07 September 2012 (has links)
The effects of peptides derived from β-lactoglobulin and α-lactalbumin on metabolic syndrome were studied. α-lactalbumin and β-lactoglobulin were hydrolyzed with trypsin, alcalase, flavourzyme, or a combination of alcalase and flavourzyme and fractionated. Angiotensin coverting enzyme inhibition of the < 1 kDa fraction of alcalase hydrolyzed β-lactoglobulin was 95 %. Antioxidant activity of the < 1 kDa fraction of β-lactoglobulin hydrolyzed with a combination of alcalase and flavourzyme was 18 %. Stimulated adipocytes incubated with the < 1 kDa fraction of β-lactoglobulin hydrolyzed with either trypsin or alcalase produced 30 pg/mL of interleukin 6. Adiponectin and glucose transporter type 4 secretions increased 1.1 and 0.86 fold respectively during incubation with the < 1 kDa fraction of β-lactoglobulin hydrolyzed with a combination of alcalase and flavourzyme. Results indicate that β-lactoglobulin peptides formed with alcalase and a combination of alcalase and flavourzyme influence markers associated with metabolic syndrome and may be useful as functional foods or nutraceuticals.
2

Effect of α-lactalbumin and β-lactoglobulin hydrolysates on markers of metabolic syndrome

Lagace, Melissa 07 September 2012 (has links)
The effects of peptides derived from β-lactoglobulin and α-lactalbumin on metabolic syndrome were studied. α-lactalbumin and β-lactoglobulin were hydrolyzed with trypsin, alcalase, flavourzyme, or a combination of alcalase and flavourzyme and fractionated. Angiotensin coverting enzyme inhibition of the < 1 kDa fraction of alcalase hydrolyzed β-lactoglobulin was 95 %. Antioxidant activity of the < 1 kDa fraction of β-lactoglobulin hydrolyzed with a combination of alcalase and flavourzyme was 18 %. Stimulated adipocytes incubated with the < 1 kDa fraction of β-lactoglobulin hydrolyzed with either trypsin or alcalase produced 30 pg/mL of interleukin 6. Adiponectin and glucose transporter type 4 secretions increased 1.1 and 0.86 fold respectively during incubation with the < 1 kDa fraction of β-lactoglobulin hydrolyzed with a combination of alcalase and flavourzyme. Results indicate that β-lactoglobulin peptides formed with alcalase and a combination of alcalase and flavourzyme influence markers associated with metabolic syndrome and may be useful as functional foods or nutraceuticals.

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