Structure of pumpkin pectin and its effect on its technological properties

Baississe, Salima; Seloua, Dridi; Fahloul, D.; Mezdour, Samir

doi:10.1515/arh-2022-0124

Cited by 24 publications

(5 citation statements)

References 42 publications

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“…The data obtained from the analysis of mechanical and barrier properties were within the acceptable range and therefore this pectin can be successfully used as film for food application [29]. Moreover, pumpkin pectin (1% w/w) possessed strong emulsifying activity and could be used to substitute Arabic gum (15%, w/w), soybean soluble polysaccharides, or other types of emulsifiers used at concentrations greater than 1% [65].…”

Section: Cucurbit Fruit Wastementioning

confidence: 74%

Towards Valorization of Food-Waste-Derived Pectin: Recent Advances on Their Characterization and Application

Frosi,

Balduzzi,

Moretto

et al. 2023

Molecules

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Pectin, a natural biopolymer, can be extracted from food waste biomass, adding value to raw materials. Currently, commercial pectin is mostly extracted from citrus peels (85.5%) and apple pomace (14.0%), with a small segment from sugar beet pulp (0.5%). However, driven by high market demand (expected to reach 2.12 billion by 2030), alternative agro-industrial waste is gaining attention as potential pectin sources. This review summarizes the recent advances in characterizing pectin from both conventional and emerging food waste sources. The focus is the chemical properties that affect their applications, such as the degree of esterification, the neutral sugars’ composition, the molecular weight, the galacturonic acid content, and technological–functional properties. The review also highlights recent updates in nutraceutical and food applications, considering the potential use of pectin as an encapsulating agent for intestinal targeting, a sustainable biopolymer for food packaging, and a functional and emulsifying agent in low-calorie products. It is clear from the considered literature that further studies are needed concerning the complexity of the pectin structure extracted from emerging food waste raw materials, in order to elucidate their most suitable commercial application.

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Section: Cucurbit Fruit Wastementioning

confidence: 74%

Towards Valorization of Food-Waste-Derived Pectin: Recent Advances on Their Characterization and Application

Frosi,

Balduzzi,

Moretto

et al. 2023

Molecules

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“…As shown in the FTIR spectra of the polymers (Figure 2), all of the copolyesters exhibited the following characteristic absorption peaks: 3073 cm À1 (aromatic C-H stretching vibration), 1735 cm À1 (ester C O stretching vibration), 1629, 1599, 1504, and 1471 cm À1 (C-C aromatic). 23,24 The peaks at 1179-1155 cm À1 and 1048-1011 cm À1 were attributed to asymmetrical and symmetrical C-O-C stretching vibrations, respectively. 25 The characteristic peak corresponding to a para-substituted aromatic structure at 883 cm À1 indicated that 4-HNA had been successfully grafted into the ternary copolyester.…”

Section: Structural Characterizationmentioning

confidence: 99%

Processability‐enhanced aromatic thermotropic liquid crystalline copolyesters via the introduction of the unsymmetrical units

Pan

Gao

Zhao

et al. 2023

J of Applied Polymer Sci

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A series of ternary thermotropic liquid crystalline copolyesters was synthesized through a simple one-pot melt condensation based on 4-hydroxybenzoic acid (HBA), 6-hydroxy-2-naphthoic acid (HNA) and 4-hydroxy-2-naphthoic acid (4-HNA). The structures were modified via the introduction of the asymmetric 4-HNA unit. High glass transition temperature values (>80 C) and relatively low melting temperature values (<265 C) were achieved with 4-HNA molar fraction of over 0.5%, and the copolymer exhibited 5% degradation temperatures of 442-453 C and the char yields of 35.80%-36.74% at 800 C. This indicated that the introduction of asymmetric 4-HNA blocks into the backbone provides a "torsion axis" to regulate the dense stacking between different main-chains, which was crucial for the mobility of polyester during thermal processes. Moreover, crystallinity decreased with the increase of 4-HNA content. The incorporation of 4-HNA also endowed the obtained copolyester fiber with a skin-core structure and microfiber morphology. Due to the excellent temperature resistance and fibrous morphology of P-HBA/HNA/4-HNA. This work provided a novel strategy to synthesize aromatic thermotropic liquid crystalline copolyesters, which can be promising candidates for processing additives or reinforcing materials with improved processing properties, and potential application in processing, personal protection, and other extreme temperature environments.

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“…The close resemblance of HAP to bones and teeth makes this material useful as an implant for dental and orthopedic applications [1][2][3]. Because of the HAP's poor mechanical qualities, significant improvements are achieved by adding various dopants like ZnO, ZrO2, Fe3O4, and Li to HAP [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. Htun et al [2] discovered that reinforced CaO-ZrO2/HAP is an effective material for improving the strength and toughness of the selected bio-composites.…”

Section: Introductionmentioning

confidence: 99%

Examining the HAP+ Fe2O3 Response in the Magnetic Field, Radiation Protection and Mechanical Properties

Malidarre

Akkurt²,

Korkmaz³

et al. 2023

Preprint

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HAP (Hydroxyapatite) bio-composite has been used extensively to repair and replace bone and teeth tissues in the human body. However, because of the poor mechanical features of HAP bio-composites, significant enhancements in the strength and toughness of pure HAP have been achieved by the insertion of various alloys and materials into HAP. Accordingly, the present study evaluates the radiation shielding and mechanical features of the Fe2O3 -reinforced HAP composite as an implant for 0.0, 2.5, 5.0, and 7.5 wt.% Fe2O3. Also, the composite response in a magnetic field has been investigated. Employing FLUKA Monte Carlo Code, radiation shielding factors are obtained. In addition, the mechanical characteristics of the studied composites are evaluated using the theoretical method. Findings reveal that increasing the Fe2O3 contents in HAP bio-composite enhances the preferred samples’ radiation shielding and mechanical qualities. Furthermore, in the absence of a magnetic field, the particles' spatial map exhibits symmetric behavior along the x-axis, however, a different trend is observed in the presence of a magnetic field with a value of Bx=5 microT.

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Structure of pumpkin pectin and its effect on its technological properties

Cited by 24 publications

References 42 publications

Towards Valorization of Food-Waste-Derived Pectin: Recent Advances on Their Characterization and Application

Towards Valorization of Food-Waste-Derived Pectin: Recent Advances on Their Characterization and Application

Processability‐enhanced aromatic thermotropic liquid crystalline copolyesters via the introduction of the unsymmetrical units

Examining the HAP+ Fe2O3 Response in the Magnetic Field, Radiation Protection and Mechanical Properties

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