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Article Synopsis
  • * Directed evolution was employed to improve the cyclomaltodextrin glucanotransferase (CGTase) enzyme, resulting in mutations that increased its affinity for maltose and overall transglycosylation activity.
  • * The N33K/S211G mutant demonstrated a 32.6% increase in trehalose yield, indicating enhanced performance of the double enzyme method for potential industrial application.
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It is not unusual for naturally occurring compounds to be limited for their use in cosmetics due to their low water solubility. Recently, aiming at accessing novel phlorizin (a glycosylated bioactive recovered from apple tree wood and already used in cosmetics as antioxidant ingredient) analogues, we reported the synthesis of very promising - but low water-soluble - biomass-derived chalcones (CHs) and dihydrochalcones (DHCs) exhibiting antioxidant and anti-tyrosinase activities. Glycosylating bioactive compounds being one of the most common strategies to increase their water solubility, herein we report the enzymatic glycosylation of the CHs mentioned above, as well as DHC using cyclodextrin glycosyltransferases (CGTase), enzymes well-known for catalyzing the selective α(1→4) transglycosylation.

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Efficient glycosylation of polyphenols via dynamic complexation of cyclodextrin and synchronous coupling reaction with cyclodextrin glycosyltransferase in water.

Int J Biol Macromol

November 2024

State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, Jiangsu 214122, China. Electronic address:

Article Synopsis
  • * The study found that glycosylation efficiencies for various polyphenols were significantly higher—up to 20.9 times—compared to non-complexed systems.
  • * The research identified the rate-limiting step in the glycosylation process, showing that the enzyme's ability to open cyclodextrin was much more effective than its ability to glycosylate polyphenols, leading to an optimal yield of 84.1% for rutin.
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Tetraphenylborate enhanced enzymatic production of γ-cyclodextrin: System construction and its mechanism.

Carbohydr Polym

December 2024

State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China; Collaborative Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China. Electronic address:

γ-Cyclodextrin (γ-CD) is an attractive material among the natural cyclodextrins owing to its excellent properties. γ-CD is primarily produced from starch by γ-cyclodextrin glycosyltransferase (γ-CGTase) in a controlled system. However, difficulty in separation and low conversion rate leads to high production costs for γ-CD.

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Enhanced antimicrobial activity against oral bacteria Actinomyces viscous by cinnamaldehyde emulsion microencapsulated with cyclodextrin glycosyltransferase-catalyzed products.

Int J Biol Macromol

November 2024

Key Laboratory of Synergetic and Biological Colloids, Ministry of Education, Wuxi 214122, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu Province, China; Institute of Future Food Technology, JITRI, Yixing 214200, Jiangsu Province, China. Electronic address:

Actinomyces viscous (A. viscous) is well documented as a major cariogenic bacterium in the oral cavity and needs to be inhibited and removed timely. Essential oils (EOs) are recognized as secure antibacterial agents for treating oral diseases, but their volatility and insolubility limit their application.

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