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Updated: Jun 10, 2026

Quantifying the Modulation of Elastase Enzyme Activity Through Colorimetric Analysis
Published on: January 17, 2025
Colors as catalysts in enzymatic reactions
Samina T Yousuf Azeemi1, Syed Mohsin Raza, Masoom Yasinzai
1Department of Physics, University of Balochistan, Quetta, Pakistan. saminatazayyen@yahoo.com
Visible light irradiation, specifically purple light (464 nm), enhances glucose oxidase activity, while dark violet light (400 nm) boosts cholesterol and lipase enzymes. This suggests light wavelengths can modulate enzymatic processes in the body.
Area of Science:
- Biochemistry
- Biophysics
- Enzymology
Background:
- Chromotherapy, or color therapy, utilizes light wavelengths to influence physiological processes.
- Enzymes are crucial biological catalysts that regulate biochemical reactions.
- Understanding light-enzyme interactions can elucidate the mechanisms behind chromotherapy.
Purpose of the Study:
- To investigate the in vitro effects of visible light irradiation on key enzymes.
- To determine specific wavelengths that modulate the activity of glucose oxidase, cholesterol oxidase, cholesterol esterase, and lipase.
- To infer potential in vivo effects relevant to chromotherapy applications.
Main Methods:
- Enzyme solutions (glucose oxidase, cholesterol oxidase + cholesterol esterase, lipase) were prepared for in vitro study.
- Enzyme samples were exposed to specific visible light wavelengths, including purple (464 nm) and dark violet (400 nm).
- Enzyme activity was measured to quantify the effects of light irradiation.
Main Results:
- Purple light (464 nm) significantly enhanced the activity of glucose oxidase.
- Dark violet light (400 nm) increased the activity of cholesterol esterase + cholesterol oxidase and lipase.
- The study demonstrated that specific wavelengths can catalyze or inhibit enzymatic processes.
Conclusions:
- Visible light irradiation can modulate enzyme activity in vitro.
- Purple and dark violet wavelengths show specific effects on different enzyme groups.
- These findings support the potential of chromotherapy to influence biochemical reactions in vivo through light-enzyme interactions.
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