Overview
D-Sorbitol is a polyol (sugar alcohol) derived from glucose via hydrogenation. Naturally occurring in fruits like apples and pears, it is industrially produced from corn syrup. Its sweetness is approximately 60% that of sucrose, making it a popular sugar substitute in diabetic and reduced-calorie products. As a versatile ingredient, sorbitol serves multiple functions beyond sweetening, including moisture retention in baked goods, viscosity control in toothpaste, and as a bulking agent in tablets. Its non-cariogenic properties make it favorable for oral care products.
Physical and Chemical Properties
D-Sorbitol appears as a white, odorless crystalline powder with a sweet taste. It exhibits high hygroscopicity, absorbing moisture from the air, which necessitates careful packaging. The compound is stable under normal conditions but may decompose at temperatures above 150°C. Its molecular structure features six hydroxyl groups, contributing to excellent water solubility (up to 235 g/100 mL at 20°C). This property, combined with its low reactivity, makes it suitable for aqueous formulations in pharmaceuticals and cosmetics.
Main Applications
In the food industry, sorbitol is used in sugar-free candies, chewing gums, and diabetic-friendly products due to its low glycemic index. It also prevents crystallization in icings and frozen desserts. The pharmaceutical sector employs it as an excipient in syrups, chewable tablets, and liquid medications, where it acts as a sweetener and stabilizer. In cosmetics, sorbitol functions as a humectant in skin creams and toothpaste, enhancing product texture and shelf life.
Safety and Storage
Regulated as GRAS by the FDA, sorbitol is safe for consumption within recommended limits. Overconsumption (typically >50g/day) may cause gastrointestinal discomfort or diarrhea due to its slow absorption. Storage requires protection from humidity to prevent caking. Bulk quantities should be kept in sealed containers with desiccants. Industrial users should ensure compliance with local regulations for food-grade or pharmaceutical-grade specifications.
B2B Procurement Guide
When sourcing sorbitol, prioritize suppliers with ISO 9001 or FSSC 22000 certifications. Key specifications include purity (≥98%), reducing sugar content (<0.3%), and heavy metal limits (<10 ppm). Procurement managers should evaluate packaging options: 25kg multi-layer paper bags with polyethylene liners are common for small orders, while tanker trucks or 1-ton bulk bags suit large-scale buyers. Lead times typically range from 2-4 weeks for domestic shipments.
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