Economic model for obtaining cyclodextrins from commercial cgtase

Koga, Luciana Numata; Fenelon, Vanderson Carvalho; Miyoshi, Juliana Harumi; Moriwaki, Cristiane; Wessel, Kamila Byanca Baldin; Mangolim, Camila Sampaio; Matioli, Graciette

doi:10.1590/s2175-97902020000118993

Cited by 1 publication

(2 citation statements)

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“…Membrane filtration or ultrafiltration is the conventional method of CD purification. The membrane enables CD to pass through it but stops the passage of enzymes and other undesirable starch degradation products [165,166,180].…”

Section: Other Methods For CD Separationmentioning

confidence: 99%

“…In addition, the end product inhibition and coupling activity of CGTases are hurdles that limit final CD yields [2,14,165]. Therefore, numerous ways are being sought to overcome these limitations in CD production together with product separation processes, such as continuous removal by using the membrane filtration process, ion-exchange chromatography, and affinity chromatography [2,165,166].…”

Section: Enzymatic Synthesis Of Cdsmentioning

confidence: 99%

See 1 more Smart Citation

Microbial Cyclodextrin Glycosyltransferases: Sources, Production, and Application in Cyclodextrin Synthesis

Gupta¹,

Tyagi²,

Pathak³

et al. 2022

Catal Res

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Cyclodextrin glycosyltransferase (CGTase) is a multifunctional enzyme that hydrolyzes the α-glycosidic bond between two sugar molecules and synthesizes cyclodextrins (CDs) and other transglycosylation products. It is a ubiquitously present extracellular enzyme that offers the CGTase-producing organism the sole right onto starch substrates over other microbes. The present review provides a brief account of diversity among CGTase-producing microbes, CGTase production in different heterologous hosts (wherein extracellular secretion is highly desired), and different physicochemical properties of CGTases. Overall, 52 crystal structures that highlight the five domain tertiary structure of CGTases have been discovered so far. On the basis of these structures, the catalytic mechanism of CGTase reactions has been discussed, and three catalytic residues, namely Glu257, Asp229, and Asp328, have been identified at the active site in all CGTases. Moreover, the active site is constituted by at least nine sugar-binding sites, denoted as -7 to +2. Furthermore, a sequence alignment of selected CGTases highlighted the conserved regions and the sequential differences among α-CGTases, β-CGTases, and γ-CGTases. Various biotechnological applications of CGTases and CGTase immobilization on a variety of support matrices are briefly discussed. This review also encompasses a detailed account of CDs, their enzymatic production, extraction, and applications in different industrial sectors.

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Section: Other Methods For CD Separationmentioning

confidence: 99%