Preparation, physicochemical characterization and application of acetylated lotus rhizome starches

Sun, Suling; Zhang, Ganwei; Ma, Chaoyang

doi:10.1016/j.carbpol.2015.07.090

Cited by 42 publications

(32 citation statements)

References 45 publications

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“…Similar results were observed earlier for starches of cassava and horse chest nut . Recently, Sun et al claimed that depolymerization of starch occurred during acetylation and consequently the starch was more readily swollen and solubilized in excess water.…”

Section: Resultsmentioning

confidence: 99%

Production of RS4 from rice by acetylation: Physico‐chemical, thermal, and structural characterization

et al. 2016

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The SR‐1, SR‐2, Jhelum, and Pusa rice starches were extracted by the alkaline method and acetylated by using acetic anhydride to make modified food starches with high contents of type 4 resistant starch (RS4). The results revealed 6–10‐fold increase in the RS4 content of rice starches via acetylation. The acetyl % and degree of substitution values (DS) of rice starches ranged from 1.83 to 2.31, and 0.05 to 0.10, respectively. The introduction of acetyl groups in starch chains was confirmed via Fourier transform infrared spectroscopy (FTIR). Acetylation was found to increase water absorption capacity, oil absorption capacity, bile‐acid binding, swelling power, solubility index, light transmittance (%), and freeze–thaw stability, whereas amylose content, syneresis, pasting parameters, and thermal properties decreased with acetylation. The SEM micrographs of the acetylated rice starch revealed the presence of polyhedral granules with rough surfaces. Also fissures and deformed depressed zones were observed in some granules.

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Section: Resultsmentioning

confidence: 99%

Production of RS4 from rice by acetylation: Physico‐chemical, thermal, and structural characterization

et al. 2016

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“…After acetylation, two new peaks appeared at 1731 cm À1 , attributed to the stretching vibration absorption of C=O bonds, and at 1245 cm À1 attributed to the stretching vibration absorption of C-O-C bonds. The appearance of the two peaks in the modified starch indicates that the acetyl groups were covalently bound to the starch molecules (Sun et al, 2016). X-ray diffraction patterns X-ray diffraction patterns of the native and treated starch samples are shown in Fig.…”

Section: Ft-ir Analysismentioning

confidence: 99%

“…The increase in light transmittance after acetylation indicates higher transparency of acetylated starch paste. The increase in light transmittance after acetylation may be attributed to that introduction of acetyl groups inhibited the interactions among the starch molecules (Sun et al, 2016). In addition, the presence of the acetyl groups may be promoted the hydrogen bonding interactions between water and starch molecules and enhanced the water absorption and swelling of starch, which resulted in an increase in the light transmittance after acetylation (Zhang et al, 2014).…”

Section: Light Transmittancementioning

confidence: 99%

“…3a). The increase in starch solubility at higher temperature could be attributed to the weakness of hydrogen bonding interactions among starch granules (Sun et al, 2016). However, the increase in starch solubility with the increase in the acetylation reagent volume may be attributed to that the incorporation of hydrophilic acetyl groups could restrict the interactions among starch molecules and enhance the hydration and swelling of starch granules, and therefore facilitated the mobility of starch molecules and increased the solubility (Kim et al, 2010).…”

Section: Water Solubility and Swelling Powermentioning

confidence: 99%

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Effects of conventional and microwave pretreatment acetylation on structural and physicochemical properties of wheat starch

Zhao

Saleh

et al. 2018

Int J of Food Sci Tech

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Summary The changes in structural and physicochemical properties of wheat starch after conventional and microwave pretreatment acetylation process were investigated and compared. The microscopy analysis showed that the microwave pretreatment acetylation significantly influenced the surface and interior structure of starch granules compared with the conventional acetylation. The microwave pretreated and untreated starch granules retained the A‐type crystalline structure with decreased relative crystallinity after acetylation. The microwave pretreated starch showed higher degree of substitution, acetyl content, and gelatinisation and pasting temperatures than those of the untreated starch after acetylation under the same conditions. However, the microwave pretreated starch showed lower gelatinisation enthalpy, light transmittance, and peak viscosity compared with the untreated starch after acetylation. Furthermore, water solubility and swelling power of the microwave pretreated and untreated starch increased after acetylation. Generally, the microwave pretreatment acetylation significantly modified structural and physicochemical properties of wheat starch compared with single acetylation process. Therefore, a combination of microwave pretreatment with acetylation can be suggested for modification of wheat starch to promote its applications in the food and nonfood industries.

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“…Los almidones con altos porcentaje de oxidación presentan mayor transmitancia (Xiao, et al, 2011) (Sun, Zhang y Ma, 2016). La formación de grupos carbonilo y grupos carboxilo permiten que las moléculas de agua se adhieran al almidón mejorando la hinchazón del granulo razón por la cual la transmitancia es superior, sin embargo, es importante mencionar que con el transcurso del tiempo la transmitancia va disminuyendo (Sun, et al, 2016).…”

Section: Transmitancia De La Luzunclassified

Oxidación y caracterización fisicoquímica de almidón de sagú “Marantha Arundinacea” para la elaboración de bioplástico

Hernández

Medina

Hernández

et al. 2017

revfue

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RESUMENEl uso excesivo de materiales derivados del petróleo como: combustibles, lubricantes, colorantes, disolventes, asfaltos, fibras textiles y plásticos ha generado a través del tiempo un grave problema ambiental, debido, a los largos periodos de degradación de estos materiales. Es por esto que hoy en día la investigación se centra en los plásticos ya que poseen poca vida útil, estos residuos terminan depositándose en rellenos sanitarios, océanos, lagos y demás fuentes hídricas generando la contaminación de este recurso vital para la vida, todo esto, provoca la muerte de especies animales y la desestabilización del ecosistema. La ciencia ha planteado soluciones tales como: reciclar, uso de papel y el desarrollo de materiales biodegradables siendo el almidón de sagú una alternativa como materia prima para la elaboración de este tipo de materiales. Esta investigación fue orientada a la elaboración de bioplástico utilizando como base almidón de sagú oxidado. Los estudios consisten en una caracterización fisicoquímica al almidón nativo, almidón oxidado y al bioplástico elaborado a base de almidón. Los análisis realizados fueron: porcentaje de grupos carbonilo y de grupos carboxilo, transparencia de los geles, microscopia electrónica de barrido donde se observó la apariencia irregular y los tamaños de los gránulos de almidón, además, el microscopio con EDS permitió observar las composiciones químicas simples de los gránulos, donde, los almidones oxidados tienen mayor porcentaje de oxigeno que el almidón nativo. En los análisis de difracción de rayos X se observa los patrones de difracción y el carácter semicristalino del almidón. El espectro de FT-IR muestra las bandas propias de los almidones nativos y oxidados. Por otra parte, las pruebas de solubilidad, transparencia muestran una ventaja del bioplástico elaborado con almidón oxidado.Palabras clave: Almidón, sagú, Almidón oxidado, Bioplástico.Oxidized and physicochemical characterization of sagu starch "Marantha arundinacea" for the elaboration of bioplastic ABSTRACTExcessive use of petroleum-based materials such as fuels, lubricants, dyes, solvents, asphalt, textile fibers and plastics has generated over time a serious environmental problem, due to long periods of degradation of these materials. That is why today's research focuses on plastics because they have little life, these wastes end up being deposited in landfills, oceans, lakes and other water sources causing pollution of this vital resource for life, all this, kills animal species and ecosystem´s destabilization. Science has proposed solutions such as recycling, the use of materials made of paper, and the development of biodegradable materials, one of those is sagu starch which is an alternative of raw material for the production of biodegradable plastics. This research was aiming to develop a bioplastic using oxidized sago starch. In this study, we performed a physicochemical characterization of native starch, oxidized starch, and bioplastic made from starch. The analyzes performed were: percentage o...

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Preparation, physicochemical characterization and application of acetylated lotus rhizome starches

Cited by 42 publications

References 45 publications

Production of RS4 from rice by acetylation: Physico‐chemical, thermal, and structural characterization

Production of RS4 from rice by acetylation: Physico‐chemical, thermal, and structural characterization

Effects of conventional and microwave pretreatment acetylation on structural and physicochemical properties of wheat starch

Oxidación y caracterización fisicoquímica de almidón de sagú “Marantha Arundinacea” para la elaboración de bioplástico

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