Overview
D(+)-Sucrose is the most common dietary disaccharide, consisting of α-D-glucose and β-D-fructose linked by a glycosidic bond. It occurs naturally in sugarcane, sugar beet, and various fruits. As a primary carbohydrate in human nutrition, it provides 4 kcal/g of energy. The global sucrose market is valued at billions annually, with major production from Brazil, India, and Thailand. Industrial production involves extraction from sugarcane or sugar beet, followed by purification and crystallization processes. Food-grade sucrose must meet strict purity standards outlined in pharmacopeias.
Physical and Chemical Properties
Sucrose forms monoclinic crystals with a specific rotation of +66.5° in aqueous solution. It undergoes hydrolysis (inversion) when heated with acids or enzymes, yielding glucose and fructose. The substance is stable under normal conditions but caramelizes at temperatures above 160°C. Its solubility increases with temperature, reaching 487 g/100 mL in boiling water. Sucrose solutions exhibit viscosity dependent on concentration and temperature. The compound is non-reducing and doesn't react with Benedict's reagent unless hydrolyzed.
Main Applications
In food industry, sucrose serves as sweetener in beverages (soft drinks account for ~20% of usage), baked goods, and confectionery. It also functions as preservative in jams due to osmotic effects and contributes to texture in ice cream. Pharmaceutical applications include use as excipient in tablets (5-70% w/w) and syrups. In biotechnology, sucrose gradients are used for cell fractionation. Industrial uses include fermentation feedstock for ethanol production and substrate for citric acid manufacturing.
Safety and Storage
Food-grade sucrose requires storage below 25°C with relative humidity <65% to prevent caking. Bulk storage silos need temperature and moisture monitoring. Although non-toxic, workplace exposure to sugar dust requires proper ventilation to prevent explosion risks (minimum explosive concentration: 30 g/m³). Long-term health concerns relate to excessive consumption contributing to obesity and diabetes. Industrial handling requires eye protection due to potential mechanical irritation from crystalline particles.
B2B Procurement Guide
Key specifications to verify: ICUMSA color value (lower numbers indicate whiter sugar), polarization (minimum 99.7°Z for refined), ash content (<0.03% for premium grade), and microbiological limits. Packaging options range from 25 kg bags to 1-ton bulk containers. Seasonal price fluctuations occur due to harvest cycles. Buyers should consider futures contracts for large quantities. Certifications to request include ISO 9001, HACCP, and for organic sugar, USDA/EU organic certification documents.
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