Synthesis and Antioxidant Activity of Cationic 1,2,3-Triazole Functionalized Starch Derivatives

Chen, Yuan; Liu, Xiguang; Sun, Xueqi; Zhang, Jingjing; Mi, Yingqi; Li, Qing; Guo, Zhanyong

doi:10.3390/polym12010112

Cited by 15 publications

(5 citation statements)

References 40 publications

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“…The absorption peak near 1642 cm −1 was attributed to bending vibrations of H–O–H [ 35 ]. The absorption peaks near 995 cm −1 and 1150 cm −1 were caused by stretching vibrations of C–O [ 36 ]. The absorption peak at 1078 cm −1 was caused by stretching vibrations of O–C in the C–O–C group of the glucose ring [ 37 , 38 ].…”

Section: Resultsmentioning

confidence: 99%

An Efficient Approach to Prepare Water-Redispersible Starch Nanocrystals from Waxy Potato Starch

et al. 2021

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Starch nanocrystals (SNCs) are a biodegradable polymer which has been widely studied and used in many fields. In this study, we have developed an efficient procedure for the preparation of SNCs. First, sodium hexametaphosphate (SHMP) and vinyl acetate (VAC) were used to modify waxy potato starch (WPS). Then, the modified starches were hydrolyzed with sulfuric acid to prepare SNCs. Results showed that SNCs prepared with modified starch had higher zeta potentials and better dispersion properties than the original starch. After modification, WPS still maintained its semi-crystalline structure, but the surface became rougher. SHMP-modified WPS showed a decrease in viscosity peak and an increase in gelatinization temperature. VAC-modified WPS showed increased swelling power. Additionally, SNCs prepared with VAC-modified WPS had better water redispersibility and dispersion stability than those from SHMP-modified starch—which will have broader application prospects in the field of safe and biodegradable food packaging.

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Section: Resultsmentioning

confidence: 99%

An Efficient Approach to Prepare Water-Redispersible Starch Nanocrystals from Waxy Potato Starch

et al. 2021

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“…This is because the backbone of starch itself is large and only one out of three hydroxyl groups in the starch molecule were substituted with CHPTAC. Theoretically, the highest possible DS for cationic starch is 3 since the anhydroglucose unit of starch provides three active hydroxyl groups, including one primary and two secondary hydroxyl groups [22,37]. A possible chemical scheme for the formation of cationic sago starch is shown in Figure 5.…”

Section: Fourier Transform Infrared Ftir Spectroscopy Analysismentioning

confidence: 99%

Preparation and Optimization of Water-Soluble Cationic Sago Starch with a High Degree of Substitution Using Response Surface Methodology

2020

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Modification and characterizations of cationic sago starch with 3-chloro-2-hydroxypropyl trimethylammonium chloride (CHPTAC) prepared via etherification reaction was reported in this study. The optimization of cationic sago starch modification was performed by utilizing the combination of response surface methodology and central composite design (RSM/CCD). The effect of each variable and the interaction between the three variables, the concentration of CHPTAC, concentration of the catalyst NaOH, and the reaction times on the degree of substitution (DS) of the product were investigated and modeled. Moderate conditions were employed and a water-soluble cationic sago starch with high DS value was obtained. Based on RSM, the highest DS = 1.195 was obtained at optimum conditions: 0.615 mol of CHPTAC concentration (CHPTAC/SS = 5), 30% w/v NaOH, and 5 h reaction time, at 60 °C reaction temperature. Furthermore, the cationic sago starch was characterized using Fourier transform infrared spectroscopy, FTIR, X-ray diffraction, XRD, and field emission scanning electron microscopy, FESEM.

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“…Fullerene is also one of kind carbon nanomaterials. Recent studies 93,94 have proved that fullerene was toxicity to bacteria due to direct oxidation of the cell, therefore the application of fullerene in intracellular sensor was still be explored.…”

Section: Carbon Nanomaterials and Their Possibility As Intracellular ...mentioning

confidence: 99%

Review—Intracellular Sensors Based on Carbonaceous Nanomaterials: A Review

Wang

Jiang

et al. 2020

J. Electrochem. Soc.

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In recent years, carbon nanomaterials and their derivatives/composites have attracted much attention for their role in new developments in the field of biosensors due to their unique electronic, optical, thermal and mechanical properties in biosensors, which inspires us to compile this review. To focus on the relationship between cell biology and some diseases (e.g., cancer or diabetes), this review describes the applications of various types of carbon nanomaterials in intracellular sensors. We also introduce four kinds of intracellular sensors based on carbon nanomaterials, including intracellular pH sensors, intracellular thermal sensors, intracellular metal ions sensors, intracellular biomolecule sensors. Then, we briefly summarize the applications of carbon nanomaterials based intracellular sensors for diagnosis or treatment of various diseases. Finally, a future perspective and the challenges of intracellular sensors based on carbon nanomaterials are briefly rendered.

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Synthesis and Antioxidant Activity of Cationic 1,2,3-Triazole Functionalized Starch Derivatives

Cited by 15 publications

References 40 publications

An Efficient Approach to Prepare Water-Redispersible Starch Nanocrystals from Waxy Potato Starch

An Efficient Approach to Prepare Water-Redispersible Starch Nanocrystals from Waxy Potato Starch

Preparation and Optimization of Water-Soluble Cationic Sago Starch with a High Degree of Substitution Using Response Surface Methodology

Review—Intracellular Sensors Based on Carbonaceous Nanomaterials: A Review

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