{"count":839,"next":"http://glycodata.org/api/gdd/glyco-properties/?format=json&page=11","previous":"http://glycodata.org/api/gdd/glyco-properties/?format=json&page=9","results":[{"id":181,"dataset":"carbohydrate","entity":"cellulose","entity_group":"","entity_class":"polysaccharide","property":"Mark–Houwink exponent a","property_key":"mark_houwink","value":"0.815","unit":"a","value_reported":"0.815","unit_reported":"a","method":"Review","method_detail":"Mark-Houwink [eta]=(2.45e2)*M^0.815 for cellulose in NaOH/urea aqueous solvent (literature value cited in review)","conditions":"Mark-Houwink [eta]=(2.45e2)*M^0.815 for cellulose in NaOH/urea aqueous solvent (literature value cited in review)","conditions_detail":"Mark-Houwink [eta]=(2.45e2)*M^0.815 for cellulose in NaOH/urea aqueous solvent (literature value cited in review) | solvent: NaOH/urea aqueous | mark houwink a: 0.815 | mark houwink K: 2.45e2","doi":"10.3390/polym11101605","source_url":"https://pmc.ncbi.nlm.nih.gov/articles/PMC6836168/","year":"2019","confidence":"medium","comments":"\"[eta]=(2.45x102)M0.815\"  — Cited comparative literature value for cellulose in NaOH/urea.  [Bu, C.; et al., 2019, confidence: medium]"},{"id":182,"dataset":"carbohydrate","entity":"chia gum (Salvia hispanica mucilage, Mw 3.845 MDa)","entity_group":"","entity_class":"polysaccharide","property":"intrinsic viscosity","property_key":"intrinsic_viscosity","value":"2498.2","unit":"mL/g","value_reported":"2498.2","unit_reported":"cm3/g","method":"Experiment","method_detail":"capillary viscometry in water, Huggins extrapolation; Mw = 3,845,000 g/mol","conditions":"capillary viscometry in water, Huggins extrapolation; Mw = 3,845,000 g/mol","conditions_detail":"capillary viscometry in water, Huggins extrapolation; Mw = 3,845,000 g/mol | solvent: distilled water | molecular weight: 3,845,000 g/mol | mark houwink a: 0.803 | mark houwink K: 0.0152","doi":"10.12691/jpbpc-6-1-2","source_url":"https://pubs.sciepub.com/jpbpc/6/1/2/index.html","year":"2018","confidence":"high","comments":"\"From the data using the Huggins method the intrinsic viscosity was calculated with a value of 2498.20 cm3/g\"  — 1 cm3/g = 1 mL/g. High [eta] consistent with rod-like, high-Mw chia gum.  [Masuelli, M.A., 2018, confidence: high]"},{"id":183,"dataset":"carbohydrate","entity":"chia gum (Salvia hispanica mucilage)","entity_group":"","entity_class":"polysaccharide","property":"intrinsic viscosity","property_key":"intrinsic_viscosity","value":"1600","unit":"mL/g","value_reported":"1600","unit_reported":"cm3/g","method":"Review","method_detail":"literature value cited from Timilsena et al. (2015); aqueous","conditions":"literature value cited from Timilsena et al. (2015); aqueous","conditions_detail":"literature value cited from Timilsena et al. (2015); aqueous | solvent: water | mark houwink a: 0.803 | mark houwink K: 0.0152","doi":"10.12691/jpbpc-6-1-2","source_url":"https://pubs.sciepub.com/jpbpc/6/1/2/index.html","year":"2018","confidence":"medium","comments":"\"The intrinsic viscosity is high (~1600 cm3/g)\"  — Cited from Timilsena et al. 2015 within the article.  [Masuelli, M.A., 2018, confidence: medium]"},{"id":184,"dataset":"carbohydrate","entity":"chia gum (Salvia hispanica mucilage)","entity_group":"","entity_class":"polysaccharide","property":"Mark–Houwink exponent a","property_key":"mark_houwink","value":"0.803","unit":"a","value_reported":"0.803","unit_reported":"a","method":"Review","method_detail":"Mark-Houwink [eta]=0.0152*M^0.803 (cm3/g) for chia gum (Timilsena et al. 2015)","conditions":"Mark-Houwink [eta]=0.0152*M^0.803 (cm3/g) for chia gum (Timilsena et al. 2015)","conditions_detail":"Mark-Houwink [eta]=0.0152*M^0.803 (cm3/g) for chia gum (Timilsena et al. 2015) | solvent: water | mark houwink a: 0.803 | mark houwink K: 0.0152","doi":"10.12691/jpbpc-6-1-2","source_url":"https://pubs.sciepub.com/jpbpc/6/1/2/index.html","year":"2018","confidence":"medium","comments":"\"Mark-Houwink relationship of intrinsic viscosity equaling to 0.0152 (molecular weight) 0.803\"  — a=0.803 indicates a stiff/extended chain conformation.  [Masuelli, M.A., 2018, confidence: medium]"},{"id":185,"dataset":"carbohydrate","entity":"guar gum (galactomannan)","entity_group":"","entity_class":"polysaccharide","property":"Mark–Houwink exponent a","property_key":"mark_houwink","value":"0.72","unit":"a","value_reported":"0.72","unit_reported":"a","method":"Experiment","method_detail":"Mark-Houwink [eta]=K*M^a with a=0.72, K=5.13e-4 ([eta] in dL/g), via HPSEC + viscometry","conditions":"Mark-Houwink [eta]=K*M^a with a=0.72, K=5.13e-4 ([eta] in dL/g), via HPSEC + viscometry","conditions_detail":"Mark-Houwink [eta]=K*M^a with a=0.72, K=5.13e-4 ([eta] in dL/g), via HPSEC + viscometry | solvent: aqueous | temperature C: 25 | mark houwink a: 0.72 | mark houwink K: 5.13e-4 dL/g","doi":"10.1016/S0144-8617(99)00017-X","source_url":"https://www.sciencedirect.com/science/article/abs/pii/S014486179900017X","year":"2000","confidence":"medium","comments":"\"The a and K values found for guar galactomannan were 0.72 and 5.13x10-4 ([eta] in dL/g) respectively\"  — Value from abstract via search; ScienceDirect full text 403-blocked. a~0.72 = random coil.  [Kasaai, M.R.; et al., 2000, confidence: medium]"},{"id":186,"dataset":"carbohydrate","entity":"guar gum (galactomannan)","entity_group":"","entity_class":"polysaccharide","property":"intrinsic viscosity","property_key":"intrinsic_viscosity","value":"914.9","unit":"mL/g","value_reported":"9.149","unit_reported":"dL/g","method":"Experiment","method_detail":"capillary viscometry, deionised water pH 6.4, 25 C","conditions":"capillary viscometry, deionised water pH 6.4, 25 C","conditions_detail":"capillary viscometry, deionised water pH 6.4, 25 C | solvent: deionised water (pH 6.4) | temperature C: 25","doi":"10.1016/S0144-8617(99)00017-X","source_url":"https://www.sciencedirect.com/science/article/abs/pii/S014486179900017X","year":"2000","confidence":"medium","comments":"\"At pH 6.4 (the pH of deionised water) the intrinsic viscosity value was determined to be 9.149 dL/g which is in close agreement to reported values of guar galactomannan of 10-12.6 dL/g.\"  — Value via search-result excerpt; literature range stated as 10-12.6 dL/g.  [Kasaai, M.R.; et al., 2000, confidence: medium]"},{"id":187,"dataset":"carbohydrate","entity":"xanthan gum (Mv ~1.43 MDa)","entity_group":"","entity_class":"polysaccharide","property":"intrinsic viscosity","property_key":"intrinsic_viscosity","value":"1522","unit":"mL/g","value_reported":"1522","unit_reported":"cm3/g","method":"Experiment","method_detail":"capillary viscometry, 0.1 M NaCl, 25 C; corresponds to Mv = 1.43e6 g/mol via Mark-Houwink","conditions":"capillary viscometry, 0.1 M NaCl, 25 C; corresponds to Mv = 1.43e6 g/mol via Mark-Houwink","conditions_detail":"capillary viscometry, 0.1 M NaCl, 25 C; corresponds to Mv = 1.43e6 g/mol via Mark-Houwink | solvent: 0.1 M NaCl (aqueous) | temperature C: 25 | molecular weight: 1.43e6 g/mol","doi":"10.12691/jpbpc-3-1-3","source_url":"https://pubs.sciepub.com/jpbpc/3/1/3/index.html","year":"2015","confidence":"medium","comments":"\"the intrinsic viscosity of xanthan gum was determined to be 1522 cm3/g ... in 0.1 M aqueous NaCl at 25 C\"  — Value via search-result excerpt from this review; 1522 cm3/g = 15.22 dL/g. A second reported value was 14.14 dL/g under similar conditions.  [Vega, E.D.; Vasquez, E.; Diaz, J.R.A.; Masuelli, M.A., 2015, confidence: medium]"},{"id":188,"dataset":"carbohydrate","entity":"pullulan","entity_group":"","entity_class":"polysaccharide","property":"Mark–Houwink exponent a","property_key":"mark_houwink","value":"0.7","unit":"a","value_reported":"0.7","unit_reported":"a","method":"Experiment","method_detail":"Mark-Houwink [eta]=0.014*Mw^0.70 ([eta] in dL/g) for pullulan in water","conditions":"Mark-Houwink [eta]=0.014*Mw^0.70 ([eta] in dL/g) for pullulan in water","conditions_detail":"Mark-Houwink [eta]=0.014*Mw^0.70 ([eta] in dL/g) for pullulan in water | solvent: water | mark houwink a: 0.7 | mark houwink K: 0.014 dL/g","doi":"10.1002/app.22324","source_url":"https://onlinelibrary.wiley.com/doi/abs/10.1002/app.22324","year":"2006","confidence":"medium","comments":"\"the formula for calculating intrinsic viscosity of pullulan is [eta]=0.014Mw0.70 ... This represents K = 0.014 and a = 0.70 for pullulan in water.\"  — Value via search-result excerpt; pullulan random coil in water. Units of K here are dL/g.  [Kasaai, M.R., 2006, confidence: medium]"},{"id":189,"dataset":"carbohydrate","entity":"pullulan","entity_group":"","entity_class":"polysaccharide","property":"Mark–Houwink exponent a","property_key":"mark_houwink","value":"0.646","unit":"a","value_reported":"0.646","unit_reported":"a","method":"Review","method_detail":"Buliga and Brant relation [eta]=2.58e-2*Mw^0.646 ([eta] in mL/g) for pullulan","conditions":"Buliga and Brant relation [eta]=2.58e-2*Mw^0.646 ([eta] in mL/g) for pullulan","conditions_detail":"Buliga and Brant relation [eta]=2.58e-2*Mw^0.646 ([eta] in mL/g) for pullulan | solvent: aqueous | mark houwink a: 0.646 | mark houwink K: 2.58e-2 mL/g","doi":"10.1002/app.22324","source_url":"https://onlinelibrary.wiley.com/doi/abs/10.1002/app.22324","year":"2006","confidence":"medium","comments":"\"the Buliga and Brant relation being [eta] = 2.58 x 10-2 Mw0.646 (in mL/g)\"  — Buliga & Brant pullulan relation cited within the Kasaai paper.  [Kasaai, M.R., 2006, confidence: medium]"},{"id":190,"dataset":"carbohydrate","entity":"pullulan (Mw 100-560 kDa)","entity_group":"","entity_class":"polysaccharide","property":"intrinsic viscosity","property_key":"intrinsic_viscosity","value":"38","unit":"mL/g","value_reported":"0.38","unit_reported":"dL/g","method":"Experiment","method_detail":"limiting viscosity number range 0.38-0.70 dL/g for Mw 100-560 kDa pullulan; lower bound recorded here","conditions":"limiting viscosity number range 0.38-0.70 dL/g for Mw 100-560 kDa pullulan; lower bound recorded here","conditions_detail":"limiting viscosity number range 0.38-0.70 dL/g for Mw 100-560 kDa pullulan; lower bound recorded here | solvent: aqueous | molecular weight: 100 kDa (low end of 100-560 kDa range)","doi":"10.1002/app.22324","source_url":"https://onlinelibrary.wiley.com/doi/abs/10.1002/app.22324","year":"2006","confidence":"medium","comments":"\"For pullulan samples with weight average molecular weight (Mw) ranging between 100 and 560x10^3, the values of limiting viscosity ([eta]) were within the range 0.38-0.70 dL/g.\"  — Range value (lower bound) via search-result excerpt; pairs with 0.70 dL/g at ~560 kDa.  [Kasaai, M.R., 2006, confidence: medium]"},{"id":191,"dataset":"carbohydrate","entity":"pullulan (Mw 100-560 kDa)","entity_group":"","entity_class":"polysaccharide","property":"intrinsic viscosity","property_key":"intrinsic_viscosity","value":"70","unit":"mL/g","value_reported":"0.7","unit_reported":"dL/g","method":"Experiment","method_detail":"limiting viscosity number range 0.38-0.70 dL/g for Mw 100-560 kDa pullulan; upper bound recorded here","conditions":"limiting viscosity number range 0.38-0.70 dL/g for Mw 100-560 kDa pullulan; upper bound recorded here","conditions_detail":"limiting viscosity number range 0.38-0.70 dL/g for Mw 100-560 kDa pullulan; upper bound recorded here | solvent: aqueous | molecular weight: 560 kDa (high end of 100-560 kDa range)","doi":"10.1002/app.22324","source_url":"https://onlinelibrary.wiley.com/doi/abs/10.1002/app.22324","year":"2006","confidence":"medium","comments":"\"For pullulan samples with weight average molecular weight (Mw) ranging between 100 and 560x10^3, the values of limiting viscosity ([eta]) were within the range 0.38-0.70 dL/g.\"  — Range value (upper bound) via search-result excerpt.  [Kasaai, M.R., 2006, confidence: medium]"},{"id":192,"dataset":"carbohydrate","entity":"dextran (T70, Mw ~70 kDa)","entity_group":"","entity_class":"polysaccharide","property":"intrinsic viscosity","property_key":"intrinsic_viscosity","value":"23.6","unit":"mL/g","value_reported":"0.236","unit_reported":"dL/g","method":"Experiment","method_detail":"capillary viscometry in water; lower end of T70-T2000 series ([eta] rises threefold 0.236->0.681 over T70->T2000)","conditions":"capillary viscometry in water; lower end of T70-T2000 series ([eta] rises threefold 0.236->0.681 over T70->T2000)","conditions_detail":"capillary viscometry in water; lower end of T70-T2000 series ([eta] rises threefold 0.236->0.681 over T70->T2000) | solvent: water | molecular weight: ~70 kDa (T70)","doi":"10.1002/app.35475","source_url":"https://onlinelibrary.wiley.com/doi/10.1002/app.35475","year":"2013","confidence":"medium","comments":"\"The intrinsic viscosity values for dextran increase threefold from 0.236 to 0.681 as molecular weight rises from T70 to T2000.\"  — Value via search-result excerpt; T70 lower bound of reported series.  [Masuelli, M.A., 2013, confidence: medium]"},{"id":193,"dataset":"carbohydrate","entity":"dextran (T2000, Mw ~2000 kDa)","entity_group":"","entity_class":"polysaccharide","property":"intrinsic viscosity","property_key":"intrinsic_viscosity","value":"68.1","unit":"mL/g","value_reported":"0.681","unit_reported":"dL/g","method":"Experiment","method_detail":"capillary viscometry in water; upper end of T70-T2000 series","conditions":"capillary viscometry in water; upper end of T70-T2000 series","conditions_detail":"capillary viscometry in water; upper end of T70-T2000 series | solvent: water | molecular weight: ~2000 kDa (T2000)","doi":"10.1002/app.35475","source_url":"https://onlinelibrary.wiley.com/doi/10.1002/app.35475","year":"2013","confidence":"medium","comments":"\"The intrinsic viscosity values for dextran increase threefold from 0.236 to 0.681 as molecular weight rises from T70 to T2000.\"  — Value via search-result excerpt; T2000 upper bound of reported series.  [Masuelli, M.A., 2013, confidence: medium]"},{"id":194,"dataset":"carbohydrate","entity":"dextran (Mw 500 kDa)","entity_group":"","entity_class":"polysaccharide","property":"intrinsic viscosity","property_key":"intrinsic_viscosity","value":"58","unit":"mL/g","value_reported":"0.58","unit_reported":"dL/g","method":"Experiment","method_detail":"1 wt% solution, 37 C; Mw = 500,000 g/mol","conditions":"1 wt% solution, 37 C; Mw = 500,000 g/mol","conditions_detail":"1 wt% solution, 37 C; Mw = 500,000 g/mol | solvent: aqueous (1 wt% solution) | temperature C: 37 | molecular weight: 500,000 g/mol","doi":"","source_url":"https://www.sciencedirect.com/topics/neuroscience/dextran","year":"2020","confidence":"low","comments":"\"A dextran with molecular weight 500,000 g/mol had an intrinsic viscosity of 0.58 dL/g in a 1 wt. % solution at 37 C.\"  — Via search-result excerpt from a publisher topic-page compilation; lower confidence as not directly fetched.  [ScienceDirect Topics (publisher compilation), 2020, confidence: low]"},{"id":195,"dataset":"carbohydrate","entity":"dextran","entity_group":"","entity_class":"polysaccharide","property":"Mark–Houwink exponent a","property_key":"mark_houwink","value":"0.4267","unit":"a","value_reported":"0.4267","unit_reported":"a","method":"Experiment","method_detail":"universalized Mark-Houwink exponent a* = 0.4267, K* = 0.1455 cm3/g for dextran in water over 20-40 C","conditions":"universalized Mark-Houwink exponent a* = 0.4267, K* = 0.1455 cm3/g for dextran in water over 20-40 C","conditions_detail":"universalized Mark-Houwink exponent a* = 0.4267, K* = 0.1455 cm3/g for dextran in water over 20-40 C | solvent: water | temperature C: 25 | mark houwink a: 0.4267 | mark houwink K: 0.1455 cm3/g","doi":"10.12691/jpbpc-1-1-3","source_url":"https://pubs.sciepub.com/jpbpc/1/1/3/","year":"2013","confidence":"medium","comments":"\"The universalized Mark-Houwink parameters for dextran across a range of working temperatures are 0.4267 for a* and 0.1455 cm3/g for k*M-H.\"  — Universalized (temperature-averaged 20-40 C) value; low exponent reflects compact branched dextran coil.  [Masuelli, M.A., 2013, confidence: medium]"},{"id":196,"dataset":"carbohydrate","entity":"hyaluronan (hyaluronic acid)","entity_group":"","entity_class":"polysaccharide","property":"Mark–Houwink exponent a","property_key":"mark_houwink","value":"0.8","unit":"a","value_reported":"0.8","unit_reported":"a","method":"Review","method_detail":"Mark-Houwink [eta]=0.029*M^0.80 for high-Mw hyaluronan in 0.2 M NaCl at 25 C","conditions":"Mark-Houwink [eta]=0.029*M^0.80 for high-Mw hyaluronan in 0.2 M NaCl at 25 C","conditions_detail":"Mark-Houwink [eta]=0.029*M^0.80 for high-Mw hyaluronan in 0.2 M NaCl at 25 C | solvent: 0.2 M NaCl (aqueous) | temperature C: 25 | mark houwink a: 0.8 | mark houwink K: 0.029","doi":"","source_url":"https://researchgate.net/publication/286514211_Molar_mass_-_Intrinsic_viscosity_relationship_of_high-molar-mass_hyaluronans_Involvement_of_shear_rate","year":"2011","confidence":"medium","comments":"\"the Mark-Houwink constants have been determined experimentally with K = 0.029 and alpha = 0.80 ... [eta] = 0.029 M^0.80 ... in 0.2 mol dm-3 NaCl at 25 C\"  — Classic HA Mark-Houwink exponent (a~0.77-0.80) in 0.1-0.2 M NaCl; value via search-result excerpt.  [Berriaud, N.; Milas, M.; Rinaudo, M. (and related HA literature), 2011, confidence: medium]"},{"id":197,"dataset":"carbohydrate","entity":"hyaluronan (acetylated, derivative)","entity_group":"","entity_class":"polysaccharide","property":"intrinsic viscosity","property_key":"intrinsic_viscosity","value":"24.5","unit":"mL/g","value_reported":"0.245","unit_reported":"dL/g","method":"Experiment","method_detail":"intrinsic viscosity of acetylated hyaluronic acid; 0.245 +/- 0.01 dL/g","conditions":"intrinsic viscosity of acetylated hyaluronic acid; 0.245 +/- 0.01 dL/g","conditions_detail":"intrinsic viscosity of acetylated hyaluronic acid; 0.245 +/- 0.01 dL/g | solvent: aqueous salt solution","doi":"","source_url":"https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/11766393","year":"2023","confidence":"low","comments":"\"an intrinsic viscosity of acetylated hyaluronic acid of 0.245 dl/g (+/-0.01 dl/g)\"  — Acetylated (chemically modified) HA from a patent; low confidence, not directly fetched.  [US Patent 11,766,393, 2023, confidence: low]"},{"id":198,"dataset":"carbohydrate","entity":"carboxymethyl cellulose (CMC, Mw > 15000)","entity_group":"","entity_class":"polysaccharide","property":"Mark–Houwink exponent a","property_key":"mark_houwink","value":"0.88","unit":"a","value_reported":"0.88","unit_reported":"a","method":"Experiment","method_detail":"Mark-Houwink exponent a = 0.88 for CMC (Mw > ~15000) in 0.1 N (0.1 M) NaCl","conditions":"Mark-Houwink exponent a = 0.88 for CMC (Mw > ~15000) in 0.1 N (0.1 M) NaCl","conditions_detail":"Mark-Houwink exponent a = 0.88 for CMC (Mw > ~15000) in 0.1 N (0.1 M) NaCl | solvent: 0.1 M NaCl (aqueous) | temperature C: 25 | mark houwink a: 0.88","doi":"","source_url":"https://www.researchgate.net/publication/258921127_Dilute_solution_properties_of_carboxymethyl_celluloses_of_various_molecular_weights_and_degrees_of_substitution","year":"1990","confidence":"low","comments":"\"For CMC raw materials with molecular weight greater than about 15,000, the Mark-Houwink exponent at 0.100N (0.1 M) NaCl concentration is 0.88.\"  — Value via search-result excerpt; high a reflects polyelectrolyte chain extension. K not given.  [(CMC dilute-solution literature), 1990, confidence: low]"},{"id":199,"dataset":"carbohydrate","entity":"amylopectin (sago starch)","entity_group":"","entity_class":"polysaccharide","property":"intrinsic viscosity","property_key":"intrinsic_viscosity","value":"210","unit":"mL/g","value_reported":"210","unit_reported":"mL/g","method":"Experiment","method_detail":"intrinsic viscosity of amylopectin from sago starch, measured in 1 M KOH; reported range 210-250 mL/g (lower bound)","conditions":"intrinsic viscosity of amylopectin from sago starch, measured in 1 M KOH; reported range 210-250 mL/g (lower bound)","conditions_detail":"intrinsic viscosity of amylopectin from sago starch, measured in 1 M KOH; reported range 210-250 mL/g (lower bound) | solvent: 1 M KOH (aqueous)","doi":"","source_url":"https://ir.unimas.my/id/eprint/7011/","year":"2010","confidence":"low","comments":"\"Intrinsic viscosity for amylopectin varied between 210 and 250 ml/g ... determined in 1M KOH.\"  — Value via search-result excerpt (PDF fetch failed on certificate); range 210-250 mL/g, lower bound recorded.  [Universiti Malaysia Sarawak (UNIMAS) thesis, 2010, confidence: low]"},{"id":200,"dataset":"carbohydrate","entity":"amylopectin (sago starch)","entity_group":"","entity_class":"polysaccharide","property":"intrinsic viscosity","property_key":"intrinsic_viscosity","value":"250","unit":"mL/g","value_reported":"250","unit_reported":"mL/g","method":"Experiment","method_detail":"intrinsic viscosity of amylopectin from sago starch, measured in 1 M KOH; reported range 210-250 mL/g (upper bound)","conditions":"intrinsic viscosity of amylopectin from sago starch, measured in 1 M KOH; reported range 210-250 mL/g (upper bound)","conditions_detail":"intrinsic viscosity of amylopectin from sago starch, measured in 1 M KOH; reported range 210-250 mL/g (upper bound) | solvent: 1 M KOH (aqueous)","doi":"","source_url":"https://ir.unimas.my/id/eprint/7011/","year":"2010","confidence":"low","comments":"\"Intrinsic viscosity for amylopectin varied between 210 and 250 ml/g ... determined in 1M KOH.\"  — Range upper bound.  [Universiti Malaysia Sarawak (UNIMAS) thesis, 2010, confidence: low]"}]}