Reb D contains two β-D-glucose units at C-13 and one β-D-glucose at C-19 (vs two glucoses at each position in Reb A), resulting in 30-40% lower solubility but improved thermal stability (decomposition at 220°C vs 195°C for Reb A).

Ethanol-water (65:35 v/v) at 45°C yields 92-95% pure Reb D crystals (confirmed by HPLC-ELSD), with controlled cooling at 0.3°C/min to prevent inclusion of Reb M impurities which co-crystallize above 0.5°C/min.

FCC XI specifies ≤3.5% Reb M in 95% pure Reb D. Our process achieves ≤2.8% through selective adsorption chromatography using DIAION® HP-20 resin with 42% ethanol elution.

Reb D shows 12-15% greater thermal stability, with only 5% degradation at 150°C for 30min (vs 18% for Reb A), making it superior for baked goods requiring high-temperature processing.

Reb D exhibits 250-300× sucrose sweetness (vs 350-450× for Reb A) but with delayed onset (3-4s) and longer duration (150-180s), yielding a more sucrose-like temporal profile ideal for dairy applications.

Fresh leaves require processing within 6hrs of harvest (vs 8hrs for Reb A) due to 40% faster enzymatic degradation. Must maintain 85-90% RH and 15-18°C during transport, with CO₂ levels <2000ppm to prevent glucosidase activation.

Optimal Reb D powder achieves D50=120-150μm with span value ≤1.8 through jet milling (2.5 bar, -20°C). This ensures bulk density of 0.45-0.55g/cm³ for optimal flowability while maintaining dissolution time ≤15s in 25°C water.

Fresh leaves require processing within 6hrs of harvest (vs 8hrs for Reb A) due to 40% faster enzymatic degradation. Must maintain 85-90% RH and 15-18°C during transport, with CO₂ levels <2000ppm to prevent glucosidase activation

Activated carbon treatment (0.5% w/v, 60°C for 30min) achieves APHA color ≤20. Hunter Lab values must show L* ≥85, a* -0.5 to +0.5, b* ≤5.0, measured against 10% aqueous solution with spectrophotometer at 420nm.

Yes, Reb D solutions tolerate higher temperatures: 85°C for 40s (vs 75°C for Reb A) due to its glycosylation pattern. This allows for commercial sterilization while maintaining <1.5% degradation, verified by post-heat HPLC analysis.

Reb D demonstrates superior pH stability vs Reb A, with <3% degradation after 30 days at pH 2.5-8.5 (25°C). Optimal stability occurs at pH 5.0-6.5, where degradation remains <0.5%/month under accelerated conditions (40°C/75% RH).

Reb D shows 23% less sweetness suppression than Reb A in 65°Brix solutions, with linear sweetness perception up to 500ppm concentration. Solubility remains >100g/L in 60°Brix sucrose solutions at 4°C, making it ideal for concentrated beverage syrups.

10kDa ceramic membranes achieve 98.5% Reb D recovery while removing 99.2% of pigments and proteins. Operating at 2.5bar transmembrane pressure with 50°C feed temperature maintains flux rate of 15-18LMH without fouling.

Reb D requires 12-15% slower cooling rates (0.2°C/min vs 0.35°C/min for Reb A) due to its anisotropic crystal growth. Orthorhombic crystals form at 55-58% ethanol concentration, yielding 20% larger particle size (150-180μm) with superior purity (99.3±0.4%).

USP <1111> mandates: TAMC ≤1000 CFU/g, TYMC ≤100 CFU/g, absence of E. coli in 10g. Our irradiation treatment (5kGy gamma) achieves sterility assurance level 10⁻³ while causing <0.8% Reb D degradation.

Zorbax SB-C18 (3.5μm, 4.6×150mm) provides 1.8x better resolution than standard C18 for Reb D/Reb M separation (Rs=2.3). Mobile phase requires 22% acetonitrile in 0.1% phosphoric acid (v/v) at 1.2mL/min for optimal peak symmetry (As=0.95-1.05).