Lipid Peroxidation Index
nounPronunciation: /ˈlɪpɪd pəˌrɒksɪˈdeɪʃən ˈɪndeks/
A quantitative measure of oxidative damage to cellular membranes, typically assessed through malondialdehyde (MDA) content or thiobarbituric acid reactive substances (TBARS). Elevated lipid peroxidation indicates increased membrane degradation and oxidative stress severity.
Plain English
A test measuring how much damage reactive oxygen species cause to plant cell membranes during stress.
Etymology & History
Usage
"The lipid peroxidation index increased significantly in salt-stressed seedlings compared to control plants."
Style guide notes: Report as MDA equivalent (μmol/g fresh weight) for standardization; specify TBARS method used for reproducibility.
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Frequently Asked Questions
What does elevated lipid peroxidation indicate?
High lipid peroxidation indicates severe oxidative stress, ineffective antioxidant defense, and significant cellular membrane damage from reactive oxygen species.
How is lipid peroxidation measured experimentally?
Malondialdehyde content is quantified using thiobarbituric acid assay, spectrophotometry, or HPLC following tissue extraction and reaction protocols.
Why Test Candidates on This?
Commonly used in stress tolerance screening to quantify oxidative damage severity and evaluate antioxidant defense system effectiveness.
Required skill level: Mid