Year1
- CAS号：
- 10016-20-3
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Related categories Polymer and polymer organic food additive synthesis reagents
Chemical Properties
Cyclodextrin is a cyclic oligoglucose. It is usually a crystalline substance connected by a, a, or a glucose unit through a bonded cyclic phase. Respectively called, or cyclodextrin [&, or, or]. Cyclodextrins do not have reducing ends and have a certain stability to acids. It is difficult for ordinary starch acids to hydrolyze them. The properties of various cyclodextrins are shown in the table below. Glucose number, space diameter (cavity depth (), crystal shape (anhydrous), needle-like specific optical rotation [] water +. & solubility. (/water, ℃) and iodine color Reaction cyan
Cyclodextrin has a hole in the center of the ring structure, and there are oxygen atoms combined with glucoside inside. It is sulfur water-based, and the groups at the glucose position, position and position are hydrophilic, and can be passed through weak Van der Waals forces complex other molecules into inclusions. There are many substances that can be included by cyclodextrin, including rare gases, halogens, dyes, spices, drugs, food, pesticides and preservatives. After inclusion, its stability , volatility, solubility, and reactivity have been improved. This special function of cyclodextrin makes it an inclusion material with wide application value. Uses in the pharmaceutical industry The use of cyclodextrin can produce drugs with Inclusions (encapsulation) can stabilize unstable drugs, deliquescent, adhesive or liquid drugs, powderize poorly soluble or insoluble drugs, etc. Uses of cyclodextrin in the pesticide industry For inclusion stabilization, certain pesticides can endure storage and improve insecticidal efficacy. Uses in the food industry Cyclodextrin is used in the food industry and has the following functions: elimination of specific odors and masking of food structure, improvement and Improve the reduction of bitter taste and remove the antioxidant effect, maintain and optimize the flavor. Use in daily chemical industry. Cyclodextrin can also be used as emulsifier and quality improver in cosmetics manufacturing. It also has deodorizing (such as removing bad breath) ) and antiseptic effect, can be used in the manufacture of toothpaste and tooth powder. Other uses can be used as a treatment agent for oily sewage in environmental protection. The aqueous solution of cyclodextrin is used to clean oil tanks, and its waste liquid can be recycled to obtain fuel Oil.. The use of cyclodextrin in the field of chemistry. Cyclodextrin is a valuable chemical reagent. When it exists, the fluorescence intensity of fluorescent pigments will increase significantly, so it can be used for the analysis of proteins and amino acids. It can also be used To separate long-chain organic compounds, racemates, etc. In addition, the adsorbent made of cyclodextrin can be used for adsorption in chromatographic analysis.
Production method
Cyclodextrin was discovered in 2010. At the beginning of this century, cyclodextrin was successfully isolated. The discovery of bacteria that produce cyclodextrin enzyme (cyclodextrin glucose translocase, abbreviation for short), especially the alkaliphilic bacteria among them, is essential for the large-scale production of cyclodextrin. It is of great significance. Using starch processed from potatoes, corn, wheat, etc. as raw material, cyclodextrin starch suspension can be obtained through the following processes [liquefaction at ℃] [reaction with ethanol at ℃], heating inactivation, filtration, concentration and drying< br/>
White crystalline powder, no peculiar smell, slightly sweet taste
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