Characterization of cationic starch: An efficient flocculating agent

Pal, Sagar; Mal, Dipakranjan; Singh, R. P.

doi:10.1002/app.27623

Cited by 25 publications

(12 citation statements)

References 13 publications

(17 reference statements)

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“…1 (c)) suspensions. It is to be noted that cationic polysaccharides are better flocculants than that of base polysaccharide [42][43][44][45][46][47][48]. It is evident from Fig.…”

Section: Resultsmentioning

confidence: 99%

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Novel biodegradable polymeric flocculants based on cationic polysaccharides

Singh¹,

Pal²,

Ali³

2014

Adv. Mater. Lett.

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Novel flocculants for wastewater and industrial effluents treatment have been developed in authors' laboratory based on modified polysaccharides. These flocculants have unique characteristics i.e. they are efficient with low dose usage like synthetic flocculants (e.g. polyacrylamide) and controlled biodegradable, shear resistant and inexpensive like polysaccharides. As contaminants have varying ionocity, various kinds of nonionic, anionic and cationic flocculants have been developed in authors' laboratory. The recent approaches on the removal of toxic materials, removal of colour and reduction of total pollutant content from various wastewaters using modified polysaccharides is becoming more important in the present frontier research,

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“…1 (c)) suspensions. It is to be noted that cationic polysaccharides are better flocculants than that of base polysaccharide [42][43][44][45][46][47][48]. It is evident from Fig.…”

Section: Resultsmentioning

confidence: 99%

“…The reaction proceeds through S N 2 pathway as shown in Scheme 1. The optimization of synthesis parameters has been carried out [39,[42][43][44][45][46][47][48]. Table 1 provides the details of synthetic parameters for various cationic polysaccharides.…”

Section: Synthesismentioning

confidence: 99%

Novel biodegradable polymeric flocculants based on cationic polysaccharides

Singh¹,

Pal²,

Ali³

2014

Adv. Mater. Lett.

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“…Hence, various packaging methods have been established to provide healthy, safe, and better quality foods and restrict package-related ecosystem pollution and disposal problems. 129 Thus, the usage of biopolymers would generate a sustainable industry for food packaging.…”

Section: Zno and Biopolymer-basedmentioning

confidence: 99%

“…Furthermore, consumer approaches for better quality, fresh-like, economical, and convenient food products have increased in the last few years. Hence, various packaging methods have been established to provide healthy, safe, and better quality foods and restrict package-related ecosystem pollution and disposal problems . Thus, the usage of biopolymers would generate a sustainable industry for food packaging.…”

Section: Zno and Biopolymer-based Nanocompositesmentioning

confidence: 99%

Emerging Trends for ZnO Nanoparticles and Their Applications in Food Packaging

Zare

Namratha

Ilyas

et al. 2022

ACS Food Sci. Technol.

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Zinc oxide (ZnO) nanoparticles (NPs), which are declared as generally recognized as safe by the U.S. Food and Drug Administration, is discussed in this review to reveal their beneficial characteristics when incorporated into packaging matrixes for food packaging and preservation applications. Some of the major challenges in conventional packaging include microbial contamination, oxidation, moisture, gas, and UV transmission into the food, and lack of mechanical strength. These factors lead to poor shelf life, affect food quality, and cause food wastage. Advancement in packaging has shifted the focus toward nanotechnology. Nanotechnology is oriented toward the fabrication and application of materials with nanosized dimensions. Among various nanomaterials, current research has focused on ZnO NPs due to their properties and future applications. Incorporation of ZnO NPs into biopolymer packaging materials considerably enhanced the antimicrobial activity against foodborne pathogens and prolonged the shelf life of foodstuffs by a Trojan-horse strategy and reactive oxygen mechanism. Besides antimicrobial activity, ZnO NPs allow improvement of the antioxidant activity of the packaging materials by limiting the presence of oxygen in the headspace. Comprehensive ZnO nanocomposite (NC) biopolymer (BP) packaging features and their significance for food packaging applications are presented in this review. Furthermore, it discusses the effect of ZnO NPs on mechanical strength and barrier properties such as water vapor permeability, oxygen transmission rate, and UV transmission across the packaging material.

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“…Cationized starch (CS), which is an important derivative of starch, has already been studied as a potential binding agent to remove organic and inorganic negatively charged matter, e.g . Cr(VI) (as chromate, CrO 4 2− ), Mn ore, coal or kaolin from aqueous solutions . It contains positively charged ( i.e .…”

Section: Introductionmentioning

confidence: 99%

Binding of some heavy metal ions in aqueous solution with cationized or sulphonylated starch or waste starch

et al. 2016

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Contamination of water by heavy metal ions is a severe environmental problem. In this study, starch-or waste-starch-based binding agents were used to bind heavy metal ions in aqueous solutions in order to prevent the precipitation of metals in alkaline conditions (pH 10). This is a useful feature, e.g. when ultrafiltration is used as a purification technique for a low metal concentration containing wastewaters. The studied binding agents were water-soluble cationized depolymerized barley starch (CDS) prepared by depolymerization and subsequent cationization, sulphonylated starch (SS) and cationized depolymerized potato peel waste (CW), all of which have not been used previously as binding agents. The studied modified starches were investigated in the binding of Fe(III), Cu(II), Zn(II), or Ni(II) ions in aqueous solutions by utilizing inductively coupled plasma-optical emission spectrometry (ICP-OES) as an analytical method. Cationized depolymerized starch bound 80-100% of Fe(III), Zn(II), and Cu(II) ions and SS bound 85-95% of Fe(III), Zn(II), and Ni(II) ions when 0.5 mM metal ions solutions and molar ratio of starch:metal 0.66:1 were used. Cationized depolymerized waste starch bound Cu(II) ions 78-94% (0.25-2.5 mM metal ion solutions prepared with distilled or lake water) in aqueous solution with molar ratio of starch:metal varying from 1:1 to 3:1.

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Characterization of cationic starch: An efficient flocculating agent

Cited by 25 publications

References 13 publications

Novel biodegradable polymeric flocculants based on cationic polysaccharides

Novel biodegradable polymeric flocculants based on cationic polysaccharides

Emerging Trends for ZnO Nanoparticles and Their Applications in Food Packaging

Binding of some heavy metal ions in aqueous solution with cationized or sulphonylated starch or waste starch

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