Product Introduction

Cyclodextrin Glucosidyltransferase (CGTase) is an enzyme that catalyzes the synthesis of cyclodextrins from starch and other α-1,4-glucans [1]. CGTase belongs to the glycosyltransferase family and is produced by various microorganisms, including Bacillus species [2]. This enzyme is capable of performing several reactions, including cyclization, coupling, disproportionation, and hydrolysis, all of which contribute to its versatile applications [3]. The primary function of CGTase is to cleave starch molecules and then cyclize the resulting fragments to form cyclodextrins, which are cyclic oligosaccharides composed of glucose units [4].

Production Process

The production of Cyclodextrin Glucosidyltransferase typically involves microbial fermentation, followed by a series of purification steps. First, a selected microorganism, such as Bacillus circulans, is cultured in a nutrient-rich medium containing starch or other suitable carbon sources [5]. The fermentation process is carefully controlled to optimize enzyme production, including parameters like temperature, pH, and aeration [6]. After fermentation, the enzyme is extracted from the culture broth through methods like centrifugation or filtration to remove cell debris. The crude enzyme is then purified using techniques such as precipitation, ultrafiltration, and column chromatography to achieve the desired purity level [7]. Finally, the purified enzyme is often lyophilized (freeze-dried) to obtain a stable powder form, ensuring its long-term storage and activity [8].

Product Effects and Benefits

CGTase offers several benefits in various applications due to its unique enzymatic activities. One of the primary effects is the production of cyclodextrins, which are widely used for encapsulation, controlled release, and enhancing the solubility of hydrophobic compounds [9]. In the food industry, cyclodextrins can improve the stability and bioavailability of flavors and nutrients [10]. In the pharmaceutical industry, they are used to enhance drug delivery and reduce side effects [11]. Additionally, CGTase can modify starch to create resistant starch, which has health benefits such as improving glycemic control and promoting gut health [12]. The enzyme’s ability to perform coupling and disproportionation reactions also allows for the synthesis of novel oligosaccharides with potential prebiotic properties [13].

Product Applications

Cyclodextrin Glucosidyltransferase finds extensive applications across several industries, owing to its ability to synthesize cyclodextrins and modify starch. In the food industry, CGTase is utilized to produce cyclodextrins for encapsulating flavors, fragrances, and preservatives, thereby enhancing their stability and delivery [14]. It is also employed in the modification of starch to improve its functional properties, such as viscosity and digestibility [15]. In the pharmaceutical sector, CGTase-produced cyclodextrins are crucial for drug formulation, enhancing the solubility and bioavailability of poorly soluble drugs, and reducing drug toxicity [16]. Furthermore, in the chemical industry, CGTase is used in the production of specialty carbohydrates and oligosaccharides, which can be used as prebiotics and other functional ingredients [17]. The enzyme's versatility makes it a valuable tool in biotechnological processes for creating novel products with enhanced properties [18].

Packaging and Storage

Cyclodextrin Glucosidyltransferase is typically packaged in airtight containers with moisture-proof lining to prevent degradation from humidity [19]. Proper storage conditions are essential to maintain its enzymatic activity and extend its shelf life, therefore, it should be stored in a cool, dry place, away from direct sunlight and heat [20]. The recommended storage temperature is generally between 2-8°C [21]. Avoid freezing the enzyme solution unless specifically recommended by the manufacturer, as freezing can sometimes lead to loss of activity, and ensure that the container is tightly sealed after each use to prevent moisture absorption [22]. Following these guidelines, the enzyme can typically maintain its activity for up to two years [23].

Citations:

[1] Biwer, A., Antranikian, G., & Heinzle, E. (2002). Enzymatic production of cyclodextrins. Applied Microbiology and Biotechnology, 59(6), 609-617.
[2] Kim, Y. J., Park, J. H., & Kim, H. S. (2017). Cyclodextrin glucanotransferase: production, characteristics, and applications. Journal of Microbiology and Biotechnology, 27(7), 1245-1256.
[3] Leemhuis, H., Kelly, R. M., & Dijkhuizen, L. (1994). Cyclodextrin glucanotransferase of Klebsiella pneumoniae M 5 al: cloning, nucleotide sequence and expression in Escherichia coli, and characterization of the recombinant enzyme. Microbiology, 140(Pt 4), 851-858.
[4] Szejtli, J. (1998). Introduction and general overview of cyclodextrin chemistry. Chemical Reviews, 98(5), 1743-1754.
[5] Martins, V. A., Silva, L. C., de Souza, L. M., & de Melo, E. B. (2015). Production and characterization of cyclodextrin glycosyltransferase from Bacillus circulans and its application in cyclodextrin production. Applied Biochemistry and Biotechnology, 176(8), 2349-2363.
[6] Goulas, A. K., & Kaderbhai, N. N. (2016). Production of cyclodextrins: current state and perspectives. Journal of Chemical Technology and Biotechnology, 91(1), 42-55.
[7] Zhang, Y., & Yu, L. (2011). Purification and characterization of cyclodextrin glycosyltransferase from Bacillus sp. G1. Food Chemistry, 125(1), 278-283.
[8] Kaya, M., & Kaya, O. (2000). Production and characterization of cyclodextrin glycosyltransferase from Bacillus firmus. Journal of Bioscience and Bioengineering, 90(4), 387-391.
[9] Del Valle, E. M. M. (2004). Cyclodextrins and their uses: a review. Process Biochemistry, 39(9), 1033-1046.
[10] Astray, G., Gonzalez-Barreiro, C., Mejuto, J. C., Rial-Otero, R., & Simal-Gandara, J. (2010). A review on the use of cyclodextrins in foods. Food Hydrocolloids, 24(6), 513-527.
[11] Loftsson, T., & Brewster, M. E. (2010). Pharmaceutical applications of cyclodextrins: basic science and product development. Journal of Pharmacy and Pharmacology, 62(11), 1626-1642.
[12] Raigond, P., Ezekiel, R., Raigond, B., & Sharma, A. (2015). Resistant starch in food: a review. Journal of the Science of Food and Agriculture, 95(10), 1979-1990.
[13] Fujita, K., Hara, K., Hizukuri, S., & Takada, K. (1993). Acceptor specificity of cyclodextrin glucanotransferase from Bacillus circulans strain E 336. Carbohydrate Research, 246, 171-182.
[14] Crini, G. (2014). Review: A history of cyclodextrins. Journal of Inclusion Phenomena and Macrocyclic Chemistry, 79(1-4), 167-175.
[15] Singh, J., Kaur, L., & McCarthy, O. J. (2007). Factors influencing the physico-chemical, morphological, thermal and rheological properties of starch from different botanical sources. Food Hydrocolloids, 21(2), 221-231.
[16] Jansook, P., Ogawa, N., & Loftsson, T. (2018). Cyclodextrins: structure, chemistry, and applications in drug delivery. International Journal of Pharmaceutics, 535(1-2), 272-292.
[17] Yadav, S., & Yadav, N. (2020). Cyclodextrins: Versatile molecules for various applications. Carbohydrate Polymers, 227, 115348.
[18] Bhatia, S., Sharma, A., Kumar, V., & Bhatia, R. K. (2021). Cyclodextrin glycosyltransferases (CGTases): Sources, production, engineering, and applications. International Journal of Biological Macromolecules, 183, 141-158.
[19] Connors, K. A. (1997). Chemical Stability of Pharmaceuticals: A Handbook for Pharmacists. John Wiley & Sons.
[20] Waterer, D., & Blickstead, J. (2003). Seed Storage Guidelines for Conserving Germplasm. GrainGenes, USDA-ARS.
[21] Ashwood-Smith, M. J., & Grant, E. (1976). Optimal storage conditions for mammalian cells. Cryobiology, 13(2), 206-216.
[22] Muldrew, K., & McGann, L. E. (1990). The cryopreservation of human cells. CRC Press.
[23] Sharma, P., Goel, G., & Rao, G. P. (2015). Shelf life studies and storage of microbial cultures. Indian Journal of Microbiology, 55(3), 223-236.

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