Imaging inclusion complex formation in starch granules using confocal laser scanning microscopy

Manca, Marianna; Woortman, Albert J. J.; Loos, Katja; Loi, Maria Antonietta

doi:10.1002/star.201400118

Cited by 26 publications

(20 citation statements)

References 39 publications

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“…By analyzing the images of waxy and not-waxy starch granules, it was observed that the amylose present at the periphery of these granules interacts with aliphatic chains of the lipophilic molecules specifically and forms inclusion complexes. It was also confirmed that long-chain amylopectin could also form complexes with the ligand (Manca et al, 2015).…”

Section: Confocal Scanning Laser Microscopy Of Starch Granulesmentioning

confidence: 71%

Advanced microscopy techniques for revealing molecular structure of starch granules

et al. 2020

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Starch is a major source of our daily diet and it is important to understand the molecular structure that plays a significant role in its wide number of applications. In this review article, microscopic structures of starch granules from potato, corn, rice canna, tania, wheat, sweet potato, and cassava are revealed using advanced microscopic techniques. Optical microscopy depicts the size and shape, polarization microscopy shows the anisotropy properties of starch granules, scanning electron microscopy (SEM) displays surface topography, and confocal microscopy is used to observe the three-dimensional internal structure of starch granules. The crystallinity of starch granules is revealed by second harmonic generation (SHG) microscopy and atomic force microscopy (AFM) provides mechanical properties including strength, texture, and elasticity. These properties play an important role in understanding the stability of starch granules under various processing conditions like heating, enzyme degradation, and hydration and determining its applications in various industries such as food packaging and textile industries.

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Section: Confocal Scanning Laser Microscopy Of Starch Granulesmentioning

confidence: 71%

Advanced microscopy techniques for revealing molecular structure of starch granules

et al. 2020

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“…Amylose as a linear polysaccharide offers interesting properties due to its helical conformation which enables amylose to act as a host molecule. The guest molecules range from small molecules such as iodine to big molecules such as polymers . The complexation between amylose and polymer leads to a versatile approach to prepare block copolymers with the capability of self‐organizing.…”

Section: Introductionmentioning

confidence: 99%

Inclusion Complexes Between Polytetrahydrofuran‐b‐Amylose Block Copolymers and Polytetrahydrofuran Chains

Rachmawati

Woortman

Kumar

et al. 2015

Macromolecular Bioscience

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Amylose inclusion complexes are prepared by complexation of synthetic amylose having a covalently attached PTHF block (PTHF-b-amylose) with guest polytetrahydrofuran of molecular weights of 650 and 1000 g · mol(-1) (PTHF650 and PTHF1000). Differential Scanning Calorimetry (DSC) analysis of the products shows a characteristic melting peak of the complexes at 140 °C. Compared to PTHF650, the PTHF1000 displays lower complexing ability with PTHF-b-amylose which is indicated by visible amylose retrogradation. The possible structures of the resulting products are estimated from Thermo Gravimetric Analysis (TGA) which reveals differences between PTHF-b-amylose and the corresponding complexes. In addition, X-Ray Diffraction (XRD) analysis demonstrates that the resulting structures of the complexes consist of 6-fold V-amylose helices. The results are confirmed further with Small Angle X-Ray Scattering (SAXS) diffractions which show that formation of inclusion complexes increases the crystalline size and regularity of the complex. There is a strong indication that the covalently attached PTHF block also induces the formation of V-amylose by residing in between the amylose blocks. In this case, the resulting structure of the complex is likely affected by both the complexation between amylose block and the added PTHF and by the in situ self-assembly of the block copolymers.

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“…A naturally occurring (hyper) branched polymer is amylopectin, one component of starch . Starch is the most abundant storage reserve carbohydrate in plants.…”

Section: Methodsmentioning

confidence: 99%

Polyurethane Coatings Based on Renewable White Dextrins and Isocyanate Trimers

Konieczny

Loos

2019

Macromol. Rapid Commun.

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The polyurethane industry is strongly dependent on fossil‐based polyols and polyisocyanates. Developing novel sustainable polyols from valuable biobased building blocks is a first step toward strong and durable development. The synthesis and properties of PU films based on pristine and acylated white dextrins (AVEDEX W80) as polyol and an aliphatic, low‐viscosity, solvent‐free triisocyanate based on hexamethylene diisocyanate (trimer—Desmodur N3300) as crosslinker is reported. After optimizing several conditions, such as the reaction time, reaction temperature, amount of solvent, isocyanate index, and amount per surface area, it is possible to obtain smooth PU films with good thermal properties.

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Imaging inclusion complex formation in starch granules using confocal laser scanning microscopy

Cited by 26 publications

References 39 publications

Advanced microscopy techniques for revealing molecular structure of starch granules

Advanced microscopy techniques for revealing molecular structure of starch granules

Inclusion Complexes Between Polytetrahydrofuran‐b‐Amylose Block Copolymers and Polytetrahydrofuran Chains

Polyurethane Coatings Based on Renewable White Dextrins and Isocyanate Trimers

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