{"count":839,"next":null,"previous":"http://glycodata.org/api/gdd/glyco-properties/?format=json&page=41","results":[{"id":821,"dataset":"uv_vis","entity":"PVA/chitosan/TEA-TOS blend film","entity_group":"chitosan blend film","entity_class":"carbohydrate polymer/film","property":"UV-vis absorption maximum","property_key":"lambda_max","value":"202","unit":"nm","value_reported":"202","unit_reported":"nm","method":"Experiment","method_detail":"UV-vis absorption spectrum of the blend film; peak at 202 nm plus 280-315 nm shoulder.","conditions":"pi-pi*; solid film","conditions_detail":"UV-vis absorption spectrum of the blend film; peak at 202 nm plus 280-315 nm shoulder. | solvent: solid film | transition: pi-pi* | sample form: film","doi":"10.1038/s41598-026-64510-y","source_url":"https://doi.org/10.1038/s41598-026-64510-y","year":"2026","confidence":"high","comments":"\"It is noted that the absorption behavior of the mixture is characterized by the presence of an absorption peak at 202 nm, in addition to the presence of a shoulder in the range 280–315 nm.\"  — Peak 202 nm; shoulder 280-315 nm recorded in notes only (not a separate numeric band). Chitosan component contributes the UV absorption.  [Elhendawi H, Ramadan RM, Ali AM, Fahmy T, 2026, Fabrication and characterization of eco-friendly PVA/chitosan/TEA-TOS composites as a potential light-absorbing material for energy storage and optoelectronics.; confidence: high]"},{"id":822,"dataset":"uv_vis","entity":"quercetin-loaded cellulose/alginate film (CEL-4Q)","entity_group":"cellulose/alginate-quercetin film","entity_class":"carbohydrate nanocomposite","property":"UV-vis absorption maximum","property_key":"lambda_max","value":"426","unit":"nm","value_reported":"426","unit_reported":"nm","method":"Experiment","method_detail":"UV-vis of control cellulose film vs quercetin-loaded film; new band at ~426 nm (Fig. 5/6).","conditions":"quercetin; pi-pi* (conjugated aromatic system); solid film","conditions_detail":"UV-vis of control cellulose film vs quercetin-loaded film; new band at ~426 nm (Fig. 5/6). | solvent: solid film | chromophore: quercetin | transition: pi-pi* (conjugated aromatic system) | sample form: film","doi":"10.1021/acsomega.6c01788","source_url":"https://doi.org/10.1021/acsomega.6c01788","year":"2026","confidence":"high","comments":"\"The introduction of quercetin in CEL-4Q leads to the appearance of a new absorption band extending toward the visible region, with a maximum at approximately 426 nm, attributed to π → π* electronic transitions of the conjugated aromatic system of quercetin.\"  — Chromophore is quercetin (a flavonoid), not the cellulose/alginate matrix; included because the material is a carbohydrate film. Paper also lists film bands at 300/391/528/633/650 nm.  [da Silva SKS, Caixeta AL, Rodrigues MBB, Fernandes BB, Schmitt PO, Cordeiro LA, de Santi II, Piva E, Carreno NLV, de Oliveira AD, Aguzzoli C, Granemann Souza E, Missio AL, do Nascimento CDD, 2026, Balancing Water Uptake, UV Visible Screening, and Mechanical Strength in Cellulose Alginate Quercetin Hydrogel Films.; confidence: high]"},{"id":823,"dataset":"uv_vis","entity":"glucose (in whole blood/plasma)","entity_group":"glucose","entity_class":"monosaccharide","property":"UV-vis absorption maximum","property_key":"lambda_max","value":"975","unit":"nm","value_reported":"975","unit_reported":"nm","method":"Experiment","method_detail":"UV-vis-NIR spectra of blood and plasma; absorption peak at 975 nm for non-invasive glucose photometry.","conditions":"NIR overtone (O-H/C-H); whole blood / plasma","conditions_detail":"UV-vis-NIR spectra of blood and plasma; absorption peak at 975 nm for non-invasive glucose photometry. | solvent: whole blood / plasma | transition: NIR overtone (O-H/C-H) | range (nm): ~600-1100","doi":"10.3390/bios15100669","source_url":"https://doi.org/10.3390/bios15100669","year":"2025","confidence":"high","comments":"\"The figure also shows an absorption peak at 975 nm for both samples (blood and plasma) in both subjects, indicating a significant absorption range for blood glucose analysis.\"  — NIR (not UV) glucose band; wavelengths <900 nm unusable in whole blood per source.  [Pedro BG, Cordova FM, Lissarassa YPS, Noveletto F, Bertemes-Filho P, 2025, Validation of Analytical Models for the Development of Non-Invasive Glucose Measurement Devices.; confidence: high]"},{"id":824,"dataset":"uv_vis","entity":"glucose (aqueous)","entity_group":"glucose","entity_class":"monosaccharide","property":"UV-vis absorption maximum","property_key":"lambda_max","value":"no distinct band","unit":"","value_reported":"","unit_reported":"","method":"Experiment","method_detail":"UV-vis spectra of aqueous glucose solutions; stated to show no distinct absorbance peaks.","conditions":"none (absence of strong chromophoric groups); water","conditions_detail":"UV-vis spectra of aqueous glucose solutions; stated to show no distinct absorbance peaks. | solvent: water | chromophore: none (absence of strong chromophoric groups)","doi":"10.1371/journal.pone.0335807","source_url":"https://doi.org/10.1371/journal.pone.0335807","year":"2025","confidence":"high","comments":"\"As expected, glucose did not show distinct absorbance peaks due to the absence of strong chromophoric groups.\"  — QUALITATIVE negative result (no numeric value); motivates ANN modelling on subtle spectral variations.  [Fadhil Abd H, Norouzi Y, Safavihamami SM, 2025, Ultraviolet-visible spectral characterization and ANN modeling of aqueous sugar solutions: Clinical and environmental perspectives.; confidence: high]"},{"id":825,"dataset":"uv_vis","entity":"4-nitrophenolate (from 4-nitrophenyl-β-D-glucopyranoside)","entity_group":"4-nitrophenyl glycoside reporter","entity_class":"carbohydrate derivative/glycoside","property":"molar absorptivity","property_key":"molar_absorptivity","value":"18000","unit":"M⁻¹ cm⁻¹","value_reported":"18000","unit_reported":"M⁻¹ cm⁻¹","method":"Experiment","method_detail":"Yield of LPMO assay quantified from 4-nitrophenolate absorbance at 405 nm (Beer-Lambert).","conditions":"4-nitrophenolate; 100 mM sodium carbonate, pH 10","conditions_detail":"Yield of LPMO assay quantified from 4-nitrophenolate absorbance at 405 nm (Beer-Lambert). | solvent: 100 mM sodium carbonate, pH 10 | pH: 10 | chromophore: 4-nitrophenolate | band at (nm): 405 | basis: molar","doi":"10.1021/acs.inorgchem.5c05285","source_url":"https://doi.org/10.1021/acs.inorgchem.5c05285","year":"2026","confidence":"high","comments":"\"Yields were determined from the concentration of 4-nitrophenolate formed, calculated using the absorbance at 405 nm (ε = 18,000 M–1 cm–1).\"  — Standard colorimetric reporter for glycoside hydrolase / LPMO activity on 4-nitrophenyl-β-D-glucopyranoside.  [Marques Netto CGC, Pandey R, Bezerra de Castro C, Moreno L, Pereira Ferreira M, Gomes Rodrigues L, Gonçalves Guimaraes W, de Araujo-Neto JH, Conciani G, Dyer RB, Jannuzzi SAV, de Moura AF, Ferreira de Souza DH, Nascimento OR, 2026, Ligand Radicals Tune LPMO Activity in Model Complex.; confidence: high]"},{"id":826,"dataset":"uv_vis","entity":"4-nitrophenol","entity_group":"4-nitrophenyl glycoside reporter","entity_class":"carbohydrate derivative/glycoside","property":"molar absorptivity","property_key":"molar_absorptivity","value":"4147","unit":"M⁻¹ cm⁻¹","value_reported":"4147","unit_reported":"M⁻¹ cm⁻¹","method":"Experiment","method_detail":"Release of 4-nitrophenol monitored at the pH-independent 348 nm isosbestic point.","conditions":"4-nitrophenol; assay buffer (96-well plate)","conditions_detail":"Release of 4-nitrophenol monitored at the pH-independent 348 nm isosbestic point. | solvent: assay buffer (96-well plate) | chromophore: 4-nitrophenol | band at (nm): 348 | basis: molar","doi":"10.1021/acs.jcim.6c00609","source_url":"https://doi.org/10.1021/acs.jcim.6c00609","year":"2026","confidence":"high","comments":"\"Enzymatic Activity Assay Using 4-Nitrophenyl Decanoate (pNPC10) The activity toward the model ester pNPC10 was assessed as described previously by monitoring the production of 4-nitrophenol at 348 nm (pH-independent isosbestic point, ε = 4147 M–1 cm–1) in 96-well plates.\"  — pH-independent isosbestic point; use when assay pH is not fixed (contrast 405 nm nitrophenolate, pH 10).  [Robles-Martín A, Vidal P, Muñoz-Tafalla R, Gonzalez-Alfonso JL, Almendral D, Plou FJ, Ferrer M, Fernandez-Lopez L, Guallar V, 2026, &lt;i&gt;In Silico&lt;/i&gt; Optimization of a Bifunctional Lipase-Polyethylene Terephthalate (PET) Hydrolase for Enhanced PET and Lipid Hydrolysis.; confidence: high]"},{"id":827,"dataset":"uv_vis","entity":"3-keto-phlorizin","entity_group":"flavonoid/keto glycoside","entity_class":"carbohydrate derivative/glycoside","property":"molar absorptivity","property_key":"molar_absorptivity","value":"13000","unit":"M⁻¹ cm⁻¹","value_reported":"13","unit_reported":"AU mM⁻¹ cm⁻¹","method":"Experiment","method_detail":"Concentration estimated from the reported molar extinction coefficient at the compound's absorption maximum.","conditions":"phenylpropanoid/chromone; aqueous buffer","conditions_detail":"Concentration estimated from the reported molar extinction coefficient at the compound's absorption maximum. | solvent: aqueous buffer | chromophore: phenylpropanoid/chromone | band at (nm): 288 | basis: molar (reported as AU mM-1 cm-1, converted x1000 to M-1 cm-1)","doi":"10.1038/s41467-023-42750-0","source_url":"https://doi.org/10.1038/s41467-023-42750-0","year":"2023","confidence":"high","comments":"\"Measurements were performed at the respective absorption maxima and concentrations were estimated based on the molar extinction coefficient: 3-keto-phlorizin, 3-keto-nothofagin, phlorizin6P and nothofagin6P (288 nm, 13 AU mM −1 cm −1 ); 3-keto-puerarin (256 nm, 33 AU mM −1 cm −1 ); 4NPα3ketoG(6P) and 4NPβ3ketoG(6P) (310 nm, 9.3 AU mM −1 cm −1 ); 3’-keto-maltose (340 nm, 5.50 AU mM −1 cm −1 ) and 3’-keto-cellobiose (340 nm, 3.55 AU mM −1 cm −1 ).\"  — Reported as 'AU mM^-1 cm^-1' (=1000 M^-1 cm^-1); value_canonical is in M^-1 cm^-1. Enzymatic deglycosylation study of natural-product O-/C-glycosides.  [Bitter J, Pfeiffer M, Borg AJE, Kuhlmann K, Pavkov-Keller T, Sánchez-Murcia PA, Nidetzky B, 2023, Enzymatic β-elimination in natural product O- and C-glycoside deglycosylation.; confidence: high]"},{"id":828,"dataset":"uv_vis","entity":"3-keto-nothofagin","entity_group":"flavonoid/keto glycoside","entity_class":"carbohydrate derivative/glycoside","property":"molar absorptivity","property_key":"molar_absorptivity","value":"13000","unit":"M⁻¹ cm⁻¹","value_reported":"13","unit_reported":"AU mM⁻¹ cm⁻¹","method":"Experiment","method_detail":"Concentration estimated from the reported molar extinction coefficient at the compound's absorption maximum.","conditions":"phenylpropanoid/chromone; aqueous buffer","conditions_detail":"Concentration estimated from the reported molar extinction coefficient at the compound's absorption maximum. | solvent: aqueous buffer | chromophore: phenylpropanoid/chromone | band at (nm): 288 | basis: molar (reported as AU mM-1 cm-1, converted x1000 to M-1 cm-1)","doi":"10.1038/s41467-023-42750-0","source_url":"https://doi.org/10.1038/s41467-023-42750-0","year":"2023","confidence":"high","comments":"\"Measurements were performed at the respective absorption maxima and concentrations were estimated based on the molar extinction coefficient: 3-keto-phlorizin, 3-keto-nothofagin, phlorizin6P and nothofagin6P (288 nm, 13 AU mM −1 cm −1 ); 3-keto-puerarin (256 nm, 33 AU mM −1 cm −1 ); 4NPα3ketoG(6P) and 4NPβ3ketoG(6P) (310 nm, 9.3 AU mM −1 cm −1 ); 3’-keto-maltose (340 nm, 5.50 AU mM −1 cm −1 ) and 3’-keto-cellobiose (340 nm, 3.55 AU mM −1 cm −1 ).\"  — Reported as 'AU mM^-1 cm^-1' (=1000 M^-1 cm^-1); value_canonical is in M^-1 cm^-1. Enzymatic deglycosylation study of natural-product O-/C-glycosides.  [Bitter J, Pfeiffer M, Borg AJE, Kuhlmann K, Pavkov-Keller T, Sánchez-Murcia PA, Nidetzky B, 2023, Enzymatic β-elimination in natural product O- and C-glycoside deglycosylation.; confidence: high]"},{"id":829,"dataset":"uv_vis","entity":"phlorizin 6-phosphate (phlorizin6P)","entity_group":"flavonoid/keto glycoside","entity_class":"carbohydrate derivative/glycoside","property":"molar absorptivity","property_key":"molar_absorptivity","value":"13000","unit":"M⁻¹ cm⁻¹","value_reported":"13","unit_reported":"AU mM⁻¹ cm⁻¹","method":"Experiment","method_detail":"Concentration estimated from the reported molar extinction coefficient at the compound's absorption maximum.","conditions":"phenylpropanoid/chromone; aqueous buffer","conditions_detail":"Concentration estimated from the reported molar extinction coefficient at the compound's absorption maximum. | solvent: aqueous buffer | chromophore: phenylpropanoid/chromone | band at (nm): 288 | basis: molar (reported as AU mM-1 cm-1, converted x1000 to M-1 cm-1)","doi":"10.1038/s41467-023-42750-0","source_url":"https://doi.org/10.1038/s41467-023-42750-0","year":"2023","confidence":"high","comments":"\"Measurements were performed at the respective absorption maxima and concentrations were estimated based on the molar extinction coefficient: 3-keto-phlorizin, 3-keto-nothofagin, phlorizin6P and nothofagin6P (288 nm, 13 AU mM −1 cm −1 ); 3-keto-puerarin (256 nm, 33 AU mM −1 cm −1 ); 4NPα3ketoG(6P) and 4NPβ3ketoG(6P) (310 nm, 9.3 AU mM −1 cm −1 ); 3’-keto-maltose (340 nm, 5.50 AU mM −1 cm −1 ) and 3’-keto-cellobiose (340 nm, 3.55 AU mM −1 cm −1 ).\"  — Reported as 'AU mM^-1 cm^-1' (=1000 M^-1 cm^-1); value_canonical is in M^-1 cm^-1. Enzymatic deglycosylation study of natural-product O-/C-glycosides.  [Bitter J, Pfeiffer M, Borg AJE, Kuhlmann K, Pavkov-Keller T, Sánchez-Murcia PA, Nidetzky B, 2023, Enzymatic β-elimination in natural product O- and C-glycoside deglycosylation.; confidence: high]"},{"id":830,"dataset":"uv_vis","entity":"nothofagin 6-phosphate (nothofagin6P)","entity_group":"flavonoid/keto glycoside","entity_class":"carbohydrate derivative/glycoside","property":"molar absorptivity","property_key":"molar_absorptivity","value":"13000","unit":"M⁻¹ cm⁻¹","value_reported":"13","unit_reported":"AU mM⁻¹ cm⁻¹","method":"Experiment","method_detail":"Concentration estimated from the reported molar extinction coefficient at the compound's absorption maximum.","conditions":"phenylpropanoid/chromone; aqueous buffer","conditions_detail":"Concentration estimated from the reported molar extinction coefficient at the compound's absorption maximum. | solvent: aqueous buffer | chromophore: phenylpropanoid/chromone | band at (nm): 288 | basis: molar (reported as AU mM-1 cm-1, converted x1000 to M-1 cm-1)","doi":"10.1038/s41467-023-42750-0","source_url":"https://doi.org/10.1038/s41467-023-42750-0","year":"2023","confidence":"high","comments":"\"Measurements were performed at the respective absorption maxima and concentrations were estimated based on the molar extinction coefficient: 3-keto-phlorizin, 3-keto-nothofagin, phlorizin6P and nothofagin6P (288 nm, 13 AU mM −1 cm −1 ); 3-keto-puerarin (256 nm, 33 AU mM −1 cm −1 ); 4NPα3ketoG(6P) and 4NPβ3ketoG(6P) (310 nm, 9.3 AU mM −1 cm −1 ); 3’-keto-maltose (340 nm, 5.50 AU mM −1 cm −1 ) and 3’-keto-cellobiose (340 nm, 3.55 AU mM −1 cm −1 ).\"  — Reported as 'AU mM^-1 cm^-1' (=1000 M^-1 cm^-1); value_canonical is in M^-1 cm^-1. Enzymatic deglycosylation study of natural-product O-/C-glycosides.  [Bitter J, Pfeiffer M, Borg AJE, Kuhlmann K, Pavkov-Keller T, Sánchez-Murcia PA, Nidetzky B, 2023, Enzymatic β-elimination in natural product O- and C-glycoside deglycosylation.; confidence: high]"},{"id":831,"dataset":"uv_vis","entity":"3-keto-puerarin","entity_group":"flavonoid/keto glycoside","entity_class":"carbohydrate derivative/glycoside","property":"molar absorptivity","property_key":"molar_absorptivity","value":"33000","unit":"M⁻¹ cm⁻¹","value_reported":"33","unit_reported":"AU mM⁻¹ cm⁻¹","method":"Experiment","method_detail":"Concentration estimated from the reported molar extinction coefficient at the compound's absorption maximum.","conditions":"isoflavone C-glycoside; aqueous buffer","conditions_detail":"Concentration estimated from the reported molar extinction coefficient at the compound's absorption maximum. | solvent: aqueous buffer | chromophore: isoflavone C-glycoside | band at (nm): 256 | basis: molar (reported as AU mM-1 cm-1, converted x1000 to M-1 cm-1)","doi":"10.1038/s41467-023-42750-0","source_url":"https://doi.org/10.1038/s41467-023-42750-0","year":"2023","confidence":"high","comments":"\"Measurements were performed at the respective absorption maxima and concentrations were estimated based on the molar extinction coefficient: 3-keto-phlorizin, 3-keto-nothofagin, phlorizin6P and nothofagin6P (288 nm, 13 AU mM −1 cm −1 ); 3-keto-puerarin (256 nm, 33 AU mM −1 cm −1 ); 4NPα3ketoG(6P) and 4NPβ3ketoG(6P) (310 nm, 9.3 AU mM −1 cm −1 ); 3’-keto-maltose (340 nm, 5.50 AU mM −1 cm −1 ) and 3’-keto-cellobiose (340 nm, 3.55 AU mM −1 cm −1 ).\"  — Reported as 'AU mM^-1 cm^-1' (=1000 M^-1 cm^-1); value_canonical is in M^-1 cm^-1. Enzymatic deglycosylation study of natural-product O-/C-glycosides.  [Bitter J, Pfeiffer M, Borg AJE, Kuhlmann K, Pavkov-Keller T, Sánchez-Murcia PA, Nidetzky B, 2023, Enzymatic β-elimination in natural product O- and C-glycoside deglycosylation.; confidence: high]"},{"id":832,"dataset":"uv_vis","entity":"4NP-α-3-keto-glucoside 6-phosphate (4NPα3ketoG(6P))","entity_group":"4-nitrophenyl glycoside reporter","entity_class":"carbohydrate derivative/glycoside","property":"molar absorptivity","property_key":"molar_absorptivity","value":"9300","unit":"M⁻¹ cm⁻¹","value_reported":"9.3","unit_reported":"AU mM⁻¹ cm⁻¹","method":"Experiment","method_detail":"Concentration estimated from the reported molar extinction coefficient at the compound's absorption maximum.","conditions":"4-nitrophenyl glycoside; aqueous buffer","conditions_detail":"Concentration estimated from the reported molar extinction coefficient at the compound's absorption maximum. | solvent: aqueous buffer | chromophore: 4-nitrophenyl glycoside | band at (nm): 310 | basis: molar (reported as AU mM-1 cm-1, converted x1000 to M-1 cm-1)","doi":"10.1038/s41467-023-42750-0","source_url":"https://doi.org/10.1038/s41467-023-42750-0","year":"2023","confidence":"high","comments":"\"Measurements were performed at the respective absorption maxima and concentrations were estimated based on the molar extinction coefficient: 3-keto-phlorizin, 3-keto-nothofagin, phlorizin6P and nothofagin6P (288 nm, 13 AU mM −1 cm −1 ); 3-keto-puerarin (256 nm, 33 AU mM −1 cm −1 ); 4NPα3ketoG(6P) and 4NPβ3ketoG(6P) (310 nm, 9.3 AU mM −1 cm −1 ); 3’-keto-maltose (340 nm, 5.50 AU mM −1 cm −1 ) and 3’-keto-cellobiose (340 nm, 3.55 AU mM −1 cm −1 ).\"  — Reported as 'AU mM^-1 cm^-1' (=1000 M^-1 cm^-1); value_canonical is in M^-1 cm^-1. Enzymatic deglycosylation study of natural-product O-/C-glycosides.  [Bitter J, Pfeiffer M, Borg AJE, Kuhlmann K, Pavkov-Keller T, Sánchez-Murcia PA, Nidetzky B, 2023, Enzymatic β-elimination in natural product O- and C-glycoside deglycosylation.; confidence: high]"},{"id":833,"dataset":"uv_vis","entity":"4NP-β-3-keto-glucoside 6-phosphate (4NPβ3ketoG(6P))","entity_group":"4-nitrophenyl glycoside reporter","entity_class":"carbohydrate derivative/glycoside","property":"molar absorptivity","property_key":"molar_absorptivity","value":"9300","unit":"M⁻¹ cm⁻¹","value_reported":"9.3","unit_reported":"AU mM⁻¹ cm⁻¹","method":"Experiment","method_detail":"Concentration estimated from the reported molar extinction coefficient at the compound's absorption maximum.","conditions":"4-nitrophenyl glycoside; aqueous buffer","conditions_detail":"Concentration estimated from the reported molar extinction coefficient at the compound's absorption maximum. | solvent: aqueous buffer | chromophore: 4-nitrophenyl glycoside | band at (nm): 310 | basis: molar (reported as AU mM-1 cm-1, converted x1000 to M-1 cm-1)","doi":"10.1038/s41467-023-42750-0","source_url":"https://doi.org/10.1038/s41467-023-42750-0","year":"2023","confidence":"high","comments":"\"Measurements were performed at the respective absorption maxima and concentrations were estimated based on the molar extinction coefficient: 3-keto-phlorizin, 3-keto-nothofagin, phlorizin6P and nothofagin6P (288 nm, 13 AU mM −1 cm −1 ); 3-keto-puerarin (256 nm, 33 AU mM −1 cm −1 ); 4NPα3ketoG(6P) and 4NPβ3ketoG(6P) (310 nm, 9.3 AU mM −1 cm −1 ); 3’-keto-maltose (340 nm, 5.50 AU mM −1 cm −1 ) and 3’-keto-cellobiose (340 nm, 3.55 AU mM −1 cm −1 ).\"  — Reported as 'AU mM^-1 cm^-1' (=1000 M^-1 cm^-1); value_canonical is in M^-1 cm^-1. Enzymatic deglycosylation study of natural-product O-/C-glycosides.  [Bitter J, Pfeiffer M, Borg AJE, Kuhlmann K, Pavkov-Keller T, Sánchez-Murcia PA, Nidetzky B, 2023, Enzymatic β-elimination in natural product O- and C-glycoside deglycosylation.; confidence: high]"},{"id":834,"dataset":"uv_vis","entity":"3'-keto-maltose","entity_group":"flavonoid/keto glycoside","entity_class":"carbohydrate derivative/glycoside","property":"molar absorptivity","property_key":"molar_absorptivity","value":"5500","unit":"M⁻¹ cm⁻¹","value_reported":"5.5","unit_reported":"AU mM⁻¹ cm⁻¹","method":"Experiment","method_detail":"Concentration estimated from the reported molar extinction coefficient at the compound's absorption maximum.","conditions":"3-keto glycoside; aqueous buffer","conditions_detail":"Concentration estimated from the reported molar extinction coefficient at the compound's absorption maximum. | solvent: aqueous buffer | chromophore: 3-keto glycoside | band at (nm): 340 | basis: molar (reported as AU mM-1 cm-1, converted x1000 to M-1 cm-1)","doi":"10.1038/s41467-023-42750-0","source_url":"https://doi.org/10.1038/s41467-023-42750-0","year":"2023","confidence":"high","comments":"\"Measurements were performed at the respective absorption maxima and concentrations were estimated based on the molar extinction coefficient: 3-keto-phlorizin, 3-keto-nothofagin, phlorizin6P and nothofagin6P (288 nm, 13 AU mM −1 cm −1 ); 3-keto-puerarin (256 nm, 33 AU mM −1 cm −1 ); 4NPα3ketoG(6P) and 4NPβ3ketoG(6P) (310 nm, 9.3 AU mM −1 cm −1 ); 3’-keto-maltose (340 nm, 5.50 AU mM −1 cm −1 ) and 3’-keto-cellobiose (340 nm, 3.55 AU mM −1 cm −1 ).\"  — Reported as 'AU mM^-1 cm^-1' (=1000 M^-1 cm^-1); value_canonical is in M^-1 cm^-1. Enzymatic deglycosylation study of natural-product O-/C-glycosides.  [Bitter J, Pfeiffer M, Borg AJE, Kuhlmann K, Pavkov-Keller T, Sánchez-Murcia PA, Nidetzky B, 2023, Enzymatic β-elimination in natural product O- and C-glycoside deglycosylation.; confidence: high]"},{"id":835,"dataset":"uv_vis","entity":"3'-keto-cellobiose","entity_group":"flavonoid/keto glycoside","entity_class":"carbohydrate derivative/glycoside","property":"molar absorptivity","property_key":"molar_absorptivity","value":"3550","unit":"M⁻¹ cm⁻¹","value_reported":"3.55","unit_reported":"AU mM⁻¹ cm⁻¹","method":"Experiment","method_detail":"Concentration estimated from the reported molar extinction coefficient at the compound's absorption maximum.","conditions":"3-keto glycoside; aqueous buffer","conditions_detail":"Concentration estimated from the reported molar extinction coefficient at the compound's absorption maximum. | solvent: aqueous buffer | chromophore: 3-keto glycoside | band at (nm): 340 | basis: molar (reported as AU mM-1 cm-1, converted x1000 to M-1 cm-1)","doi":"10.1038/s41467-023-42750-0","source_url":"https://doi.org/10.1038/s41467-023-42750-0","year":"2023","confidence":"high","comments":"\"Measurements were performed at the respective absorption maxima and concentrations were estimated based on the molar extinction coefficient: 3-keto-phlorizin, 3-keto-nothofagin, phlorizin6P and nothofagin6P (288 nm, 13 AU mM −1 cm −1 ); 3-keto-puerarin (256 nm, 33 AU mM −1 cm −1 ); 4NPα3ketoG(6P) and 4NPβ3ketoG(6P) (310 nm, 9.3 AU mM −1 cm −1 ); 3’-keto-maltose (340 nm, 5.50 AU mM −1 cm −1 ) and 3’-keto-cellobiose (340 nm, 3.55 AU mM −1 cm −1 ).\"  — Reported as 'AU mM^-1 cm^-1' (=1000 M^-1 cm^-1); value_canonical is in M^-1 cm^-1. Enzymatic deglycosylation study of natural-product O-/C-glycosides.  [Bitter J, Pfeiffer M, Borg AJE, Kuhlmann K, Pavkov-Keller T, Sánchez-Murcia PA, Nidetzky B, 2023, Enzymatic β-elimination in natural product O- and C-glycoside deglycosylation.; confidence: high]"},{"id":836,"dataset":"uv_vis","entity":"glucose (reference standard)","entity_group":"assay standard (glucose)","entity_class":"carbohydrate assay standard","property":"colorimetric assay wavelength","property_key":"assay_wavelength","value":"490","unit":"nm","value_reported":"490","unit_reported":"nm","method":"Experiment","method_detail":"Phenol-sulfuric acid colorimetric assay, glucose as reference standard.","conditions":"phenol-sulfuric acid; phenol-sulfuric acid colour complex","conditions_detail":"Phenol-sulfuric acid colorimetric assay, glucose as reference standard. | chromophore: phenol-sulfuric acid colour complex | assay: phenol-sulfuric acid | standard: glucose | analyte: total polysaccharide","doi":"10.3390/foods15101769","source_url":"https://doi.org/10.3390/foods15101769","year":"2026","confidence":"high","comments":"\"The concentration of total polysaccharides was evaluated via an adapted phenol-sulfuric acid colorimetric approach, employing glucose as the reference standard and absorbance was measured at 490 nm.\"  — Standard detection wavelength for the phenol-sulfuric acid total-carbohydrate assay.  [Zhang S, Liu T, Qu X, Zhang W, Wu X, Liu Y, Li S, Shi D, Li H, Gong A, 2026, &lt;i&gt;Inonotus obliquus&lt;/i&gt; Polysaccharides Prevent High-Fat Diet-Induced Obesity in Mice Related to Reshaping Gut Microbiota.; confidence: high]"},{"id":837,"dataset":"uv_vis","entity":"glucose (carbohydrate standard)","entity_group":"assay standard (glucose)","entity_class":"carbohydrate assay standard","property":"colorimetric assay wavelength","property_key":"assay_wavelength","value":"620","unit":"nm","value_reported":"620","unit_reported":"nm","method":"Review","method_detail":"Anthrone-sulfuric acid colorimetric method (review of TCM polysaccharide detection).","conditions":"anthrone-sulfuric acid; anthrone-carbohydrate blue-green complex","conditions_detail":"Anthrone-sulfuric acid colorimetric method (review of TCM polysaccharide detection). | chromophore: anthrone-carbohydrate blue-green complex | assay: anthrone-sulfuric acid | standard: glucose | analyte: total polysaccharide","doi":"10.1016/j.chmed.2026.02.009","source_url":"https://doi.org/10.1016/j.chmed.2026.02.009","year":"2026","confidence":"high","comments":"\"This derivative reacts with anthrone to form a blue-green complex, with a maximum absorption wavelength of 620 nm.\"  — Review of polysaccharide detection methods; anthrone-sulfuric acid read at 620 nm.  [Zhang L, Wang X, Zhang J, Liu D, Bai G, 2026, Research progress of polysaccharide detection methods in traditional Chinese medicine.; confidence: high]"},{"id":838,"dataset":"uv_vis","entity":"galacturonic acid (standard)","entity_group":"uronic acid standard","entity_class":"uronic acid","property":"colorimetric assay wavelength","property_key":"assay_wavelength","value":"520","unit":"nm","value_reported":"520","unit_reported":"nm","method":"Experiment","method_detail":"Modified m-hydroxybiphenyl assay for glycuronic acid content, galacturonic acid standard.","conditions":"m-hydroxybiphenyl; m-hydroxybiphenyl-uronic acid complex","conditions_detail":"Modified m-hydroxybiphenyl assay for glycuronic acid content, galacturonic acid standard. | chromophore: m-hydroxybiphenyl-uronic acid complex | assay: m-hydroxybiphenyl | standard: galacturonic acid | analyte: uronic acid","doi":"10.3390/foods15101769","source_url":"https://doi.org/10.3390/foods15101769","year":"2026","confidence":"high","comments":"\"To quantify the glycuronic acid content, a modified m-hydroxybiphenyl technique was utilized, with galacturonic acid serving as the standard, employing galacturonic acid as the standard, and absorbance was recorded at 520 nm.\"  — Uronic acid (glycuronic acid) colorimetric assay.  [Zhang S, Liu T, Qu X, Zhang W, Wu X, Liu Y, Li S, Shi D, Li H, Gong A, 2026, &lt;i&gt;Inonotus obliquus&lt;/i&gt; Polysaccharides Prevent High-Fat Diet-Induced Obesity in Mice Related to Reshaping Gut Microbiota.; confidence: high]"},{"id":839,"dataset":"uv_vis","entity":"reducing sugar (from starch hydrolysis)","entity_group":"reducing sugar","entity_class":"reducing sugar","property":"colorimetric assay wavelength","property_key":"assay_wavelength","value":"540","unit":"nm","value_reported":"540","unit_reported":"nm","method":"Experiment","method_detail":"DNS (3,5-dinitrosalicylic acid) reducing-sugar assay.","conditions":"DNS (3,5-dinitrosalicylic acid); DNS-reducing sugar complex","conditions_detail":"DNS (3,5-dinitrosalicylic acid) reducing-sugar assay. | chromophore: DNS-reducing sugar complex | assay: DNS (3,5-dinitrosalicylic acid) | standard: glucose | analyte: reducing sugar","doi":"10.3390/foods15111882","source_url":"https://doi.org/10.3390/foods15111882","year":"2026","confidence":"high","comments":"\"DNS reacts with reducing sugars released from starch hydrolysis; therefore, lower absorbance at 540 nm indicates stronger α-amylase inhibition.\"  — Working wavelength of the DNS reducing-sugar assay (540 nm).  [Qayyum A, Junejo SA, Xu Z, Hassan MZ, Liu B, Chen Z, 2026, The Effect of Lactic Acid Bacteria Fermentation on the Anti-Diabetic Activity of Pumpkin Puree; confidence: high]"}]}