Physico-chemical properties of solvent based etherification of sago starch

Misman, M.A.; Azura, A. R.; Hamid, Z.A.A.

doi:10.1016/j.indcrop.2014.11.009

Cited by 25 publications

(7 citation statements)

References 25 publications

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“…Oxidation of C6 hydroxyl groups with catalytic TEMPO and bleach can be accomplished in a facile and environmentally friendly route in aqueous media (Figure 4d). Other transformations include etherification to make neutral starches (Misman, Azura, & Hamid, 2015), and ozone treatment, which is both a chemical and physical modification method (Castanha, Santos, Cunha, & Augusto, 2019; Klein et al., 2014). Morphological modification is also a common strategy that is utilized to change starches’ functional properties to give porous starch or starch nanoparticles (NPs) (Li, Zhao et al., 2018; Oliyaei, Moosavi‐Nasab, Tamaddon, & Fazaeli, 2020; Xiang et al., 2016; Yang et al., 2017).…”

Section: Modification Strategiesmentioning

confidence: 99%

Recent advances in starch‐based films toward food packaging applications: Physicochemical, mechanical, and functional properties

Lauer

Smith

2020

Comp Rev Food Sci Food Safe

125

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Interest in starch-based films has increased precipitously in response to a growing demand for more sustainable and environmentally sourced food packaging materials. Starch is an optimal candidate for these applications given its ability to form thermoplastic materials and films with affordable and often sustainably sourced plasticizers like those produced as waste byproducts by biodiesel and agricultural industries. Starch is also globally ubiquitous, affordable, and environmentally benign. Although the process of producing starch films is relatively straightforward, numerous factors, including starch source, extraction method, film formulation, processing methods, and curing procedures, drastically impact the ultimate material properties. The significant strides made from 2015 to early 2020 toward elucidating how these variables can be leveraged to improve mechanical and barrier properties as well as the implementation of various additives or procedural modifications are cataloged in this review. Advances toward the development of functional films containing antioxidant, antibacterial, or spoilage indicating components to prevent or signal the degradation of food products are also discussed.

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Section: Modification Strategiesmentioning

confidence: 99%

Recent advances in starch‐based films toward food packaging applications: Physicochemical, mechanical, and functional properties

Lauer

Smith

2020

Comp Rev Food Sci Food Safe

125

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“…The amylose content of starch from banana, corn, and potato was reported to be between 17% and 24%, while starch from rice had amylose content between 15% and 35% [ 80 ]. The amylose content of sago reported by Misman et al [ 81 ] was approximately 27%. The high amylose content in sago has made it a promising material for the fabrication of the HA–starch-based scaffold.…”

Section: Starch/hydroxyapatite Composite Scaffoldmentioning

confidence: 99%

The State of Starch/Hydroxyapatite Composite Scaffold in Bone Tissue Engineering with Consideration for Dielectric Measurement as an Alternative Characterization Technique

et al. 2021

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Hydroxyapatite (HA) has been widely used as a scaffold in tissue engineering. HA possesses high mechanical stress and exhibits particularly excellent biocompatibility owing to its similarity to natural bone. Nonetheless, this ceramic scaffold has limited applications due to its apparent brittleness. Therefore, this had presented some difficulties when shaping implants out of HA and for sustaining a high mechanical load. Fortunately, these drawbacks can be improved by combining HA with other biomaterials. Starch was heavily considered for biomedical device applications in favor of its low cost, wide availability, and biocompatibility properties that complement HA. This review provides an insight into starch/HA composites used in the fabrication of bone tissue scaffolds and numerous factors that influence the scaffold properties. Moreover, an alternative characterization of scaffolds via dielectric and free space measurement as a potential contactless and nondestructive measurement method is also highlighted.

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“…The Hamid group published the experimental results on modifying the physical properties of starch, such as thermal behavior, mechanical endurance, and processability, by the etherification of the hydroxyl groups of starch extracted from palm trees with benzyl chloride [17]. In their study, as discussed in Scheme 4, the reaction proceeded with using NaOH at 60 °C to increase the conversion rate of hydroxyl groups to methoxy (Scheme 6).…”

Section: Etherification Of Starchmentioning

confidence: 99%

“…Hence, the probability of proceeding to the reaction by the mechanism shown in Scheme 6 rather than that in Scheme 7 may increase. A previous study [17] reported that it possible to increase the efficiency of the etherification reaction of starch, as shown in Scheme 6.…”

Section: Etherification Of Starchmentioning

confidence: 99%

Reaction Mechanisms Applied to Starch Modification for Biodegradable Plastics: Etherification and Esterification

Kim

Jung

2022

International Journal of Polymer Science

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Although many studies are being actively conducted to develop biodegradable plastic materials, most of these reports focused more on efficiency or performance improvement than on the reaction mechanism. This paper discussed the reaction mechanism applied to starch modification by etherification and esterification, which are the most studied in the field of biodegradable plastics. In the starch-reforming reaction by etherification, the effects of the reaction temperature, pH, solvent, and by-products on the chemical structure and physical properties of biodegradable plastics were discussed. In esterification, the structure of the substituents and the reaction solvents were examined. As a material that can replace plastics, the aim is to help derive new ideas on the design of reaction condition that can expand the use of starch.

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Physico-chemical properties of solvent based etherification of sago starch

Cited by 25 publications

References 25 publications

Recent advances in starch‐based films toward food packaging applications: Physicochemical, mechanical, and functional properties

Recent advances in starch‐based films toward food packaging applications: Physicochemical, mechanical, and functional properties

The State of Starch/Hydroxyapatite Composite Scaffold in Bone Tissue Engineering with Consideration for Dielectric Measurement as an Alternative Characterization Technique

Reaction Mechanisms Applied to Starch Modification for Biodegradable Plastics: Etherification and Esterification

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