Date of Project

4-30-2026

Document Type

Honors Thesis

School Name

College of Arts and Sciences

Department

Biology

Major Advisor

Dr. Savita Chaurasia

Second Advisor

Dr. Saurin Sutaria

Abstract

Diabetes mellitus is a metabolic disorder characterized by chronic hyperglycemia, which both results from and contributes to metabolic dysregulation. Hyperglycemia can incur oxidative stress on cells, resulting in cell dysfunction and increased hyperglycemia. Prolonged periods of hyperglycemia can cause issues with the nervous and cardiovascular systems. Eriodictyon californicum, or Yerba Santa, is a plant used by the Native Americans to treat respiratory illness. The crude extract of Yerba Santa is shown to have a high phytochemical content and subsequently antioxidant properties. It has also been shown to inhibit PTP1B in the insulin pathway. In this study, Yerba Santa extracts were fractionated based on polarity and evaluated for potential antidiabetic activity. Enzyme inhibition assays demonstrated that both crude and fractionated Yerba Santa extracts inhibited alpha-amylase and alpha-glucosidase activity, supporting the potential of Yerba Santa as a source of antidiabetic compounds.

Available for download on Friday, April 30, 2027

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