2021
DOI: 10.2166/ws.2021.103
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Exploring the fluorescence quenching interaction of amino acids and protein with natural organic matter by a multi-spectroscopic method

Abstract: The main objective of this research was to explore the fluorescence quenching mechanism of humic substance (Suwannee River natural organic matter, (SWNOM)) to amino acids (tryptophan, tyrosine) and protein (bovine serum albumin, (BSA)) by multi-spectroscopic methods. The locations of the peak of tryptophan, tyrosine, and BSA from the Parallel Factor Analysis were at Ex/Em 280/356 nm, 275/302 nm, and 280/344 nm, respectively. For SWNOM, two peaks appeared at Ex/Em of 240/448 nm, and 350/450 nm. Static quenching… Show more

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Cited by 5 publications
(2 citation statements)
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“…However, based on the mechanism involved, quenching can be static, dynamic, or a combination of both. The specific quenching mechanism attributed to a particular interaction can be inferred by examining the temperature-dependent behavior, viscosity, and particularly the lifetime analysis of the excited state . The obtained spectra were corrected for the inner filter effect using eq , , as both 4-MU and UMB exhibit significant absorbance at the emission and excitation wavelengths of pepsin due to their fluorescence properties. F corr = F obs × 10 ( A em + A ex ) / 2 Here, the observed fluorescence intensity is represented by F obs , while the corrected fluorescence intensity is denoted as F corr .…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…However, based on the mechanism involved, quenching can be static, dynamic, or a combination of both. The specific quenching mechanism attributed to a particular interaction can be inferred by examining the temperature-dependent behavior, viscosity, and particularly the lifetime analysis of the excited state . The obtained spectra were corrected for the inner filter effect using eq , , as both 4-MU and UMB exhibit significant absorbance at the emission and excitation wavelengths of pepsin due to their fluorescence properties. F corr = F obs × 10 ( A em + A ex ) / 2 Here, the observed fluorescence intensity is represented by F obs , while the corrected fluorescence intensity is denoted as F corr .…”
Section: Resultsmentioning
confidence: 99%
“…The specific quenching mechanism attributed to a particular interaction can be inferred by examining the temperature-dependent behavior, viscosity, and particularly the lifetime analysis of the excited state. 44 The obtained spectra were corrected for the inner filter effect using eq 1a, 45,46 as both 4-MU and UMB exhibit significant absorbance at the emission and excitation wavelengths of pepsin due to their fluorescence properties.…”
Section: Intrinsic Trp Fluorescence Of Pepsin In the Presence Of Umb/...mentioning
confidence: 99%