Modification of foxtail millet starch by combining physical, chemical and enzymatic methods

Dey, Ashim Kanti; Sit, Nandan

doi:10.1016/j.ijbiomac.2016.11.067

Cited by 57 publications

(33 citation statements)

References 31 publications

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“…As an example of physical modifications, high pressure homogenization has resulted in a physically modified starch having crystallinity reduction properties in the starch grain that could produce a hydrogel with stronger gel networks [56]. Modification by treatment of humidity and heat that generates interactions and new associations between the amylose and amylopectin structures, besides the ultrasound that can also be used as a physical method for the modification of starches [57].…”

Section: Starchmentioning

confidence: 99%

Biodegradable Polymers: Opportunities and Challenges

Rosseto¹,

Rigueto²,

Krein³

et al. 2020

Organic Polymers

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The overuse of polymer materials from fossil sources has generated a large volume of waste that causes environmental impacts due to the degradation time. The technological advance has stimulated the search for alternatives that can contribute to sustainability. In this context, the use of biodegradable polymers, that use raw materials from renewable sources stand out because they have that ability to form films and come from abundant sources. Also, in the expectation of optimizing the environmental benefits in this process, it is possible to value the agroindustrial residues, using them as raw material in the synthesis of the polymer, the physical, chemical and mechanical properties of these polymers are important to evaluate the possible applications. The proposal of this chapter is to present current research on renewable sources, including agricultural and industrial residues, to obtain biodegradable polymers, highlighting their properties and possibilities of application.

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Section: Starchmentioning

confidence: 99%

Biodegradable Polymers: Opportunities and Challenges

Rosseto¹,

Rigueto²,

Krein³

et al. 2020

Organic Polymers

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“…Svarbu tai, kad krakmolas yra pigi, bioskaidi atsinaujinanti žaliava. Tačiau dėl ypatingos jo mikrostruktūros ir savybių dažnai prieš naudojant gamtinį krakmolą tenka jį modifikuoti cheminiais, fizikiniais metodais [1,2]. Pastaruoju metu modifikuotas krakmolas vis plačiau taikomas ne maisto pramonėje [3].…”

Section: įVadasunclassified

“…Modifikuojant polimerus vieno ir dviejų sraigtų ekstruderiuose pastebimi produktų ir proceso skirtumai: dviejų sraigtų ekstruderis yra pranašesnis nei vieno sraigto ekatruderis: jame yra intensyvesnis maišymas ir atitinkamai didesnis mechaninis poveikis reakcijos mišiniui, šilumos mainų procesams, dėl ypatingų sraigto elementų kai kuriose vietose galimas priešpriešinis srauto judėjimas, o tai lemia ekstrudavimo trukmę, slėgį, kartu reakcijos efektyvumą ir ekonominius gamybos rodiklius [16]. Dviejų sraigtų ekstruderis, pirmiausia panaudotas maistui perdirbti, pastaraisiais metais tapo plačiai naudojamas krakmolui modifikuoti rūgštimis, šarmais ir fermentais [1]. Krakmolo ir jo darinių mikroskopiniai tyrimai.…”

Section: įVadasunclassified

Properties of Cationic Starches Obtained by Reactive Extrusion

Bendoraitienė¹,

Lekniute-Kyzike²,

Литвяк³

et al. 2017

ChemTech

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Katijoninis krakmolas, kurio pakeitimo laipsnis yra 0,1, gautas pusiau sausuoju būdu, reagentus sumaišant ir reakciją vykdant reaktoriuje Druvatherm® DVT5, arba po sumaišymo, krakmolą modifikuojant dviejų sraigtų ekstruderyje ZE25Rx40D UTXi. Katijonizavimui naudotas epoksidinis reagentas  2,3-epoksipropiltrimetilamonio chloridas. Nors gauto krakmolo cheminė sudėtis ta pati, tačiau struktūros ir savybių tyrimas parodė modifikuoto krakmolo skirtumus, kuriuos lemia tai, kad ekstuderyje krakmolo granulės veikiamos termomechaniškai ir šlyties jėgos ardo granules, o modifikuojant reaktoriuje išlaikoma granulių forma. Ekstruduoto katijoninio krakmolo dalelės yra smulkesnės, jonogeninių grupių prieinamumas, tirpios dalies kiekis ir flokuliacinis efektyvumas didesnis.

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“…The literature has limited research works on quadruple modification of starches. [18,19] This review is strictly about triple modification of various starches due to shortcomings of native, single modification and dual modifications that have been identified. To the best of my knowledge work of this nature seems rare in the literature.…”

Section: Introductionmentioning

confidence: 99%

The Recent Development in the Syntheses, Properties, and Applications of Triple Modification of Various Starches

Ashogbon

2021

Starch Stärke

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The problems associated with native starches, single and dual modifications of various starches are stated in order to justify the utilization of triple modification of various starches. In triple modification, the first and dual modifications prepare the starch chains, structures, and polymeric components of the starch granules for the acceptance and accommodation of the triple modification. Sometimes there is development of pores, cracks, and other morphological flaws or weakening of the starch structures and chains during the first and dual modifications in order for easy penetration of the modifying agents during the third modification. There are mainly two types of triple modification, that is, homogeneous and heterogeneous. Homogeneous triple modification is when all the three stages of the process are similar, for example, acetylation/oxidation/crosslinking, this is homogeneous triple chemical modification. An example of homogeneous triple physical modification is a combination of extrusion/ultrasonication/ANN. When three enzymes (α‐amylase/transglucosidase/pullulanase) are involved in the stages of the process, it is called homogeneous triple enzymes modification. In contrast, heterogeneous triple modification involves combinations of the various three stages that constitute the process, for example, extrusion/pullulanase/ANN. This overview discusses the syntheses, properties, and utilization of triple modified starches.

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Modification of foxtail millet starch by combining physical, chemical and enzymatic methods

Cited by 57 publications

References 31 publications

Biodegradable Polymers: Opportunities and Challenges

Biodegradable Polymers: Opportunities and Challenges

Properties of Cationic Starches Obtained by Reactive Extrusion

The Recent Development in the Syntheses, Properties, and Applications of Triple Modification of Various Starches

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