Citrus pectin as a template for synthesis of colorful aluminates

Dalpasquale, Mariane; Mariani, Filipe Quadros; Müller, Marcelo Marques Lopes; Anaissi, Fauze Jacó

doi:10.1016/j.dyepig.2015.10.015

Cited by 16 publications

(7 citation statements)

References 36 publications

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“…The rough and wrinkled surface of pectin samples can be explained due to high temperature (90 °C) applied in the process of extraction [ 34 , 44 ]. Similar results were obtained by Dalpasquale et al [ 68 ] and Almeida et al [ 69 ]. However, under the traditional extraction, the pectin samples mainly remained as the cluster formation [ 69 ].…”

Section: Resultssupporting

confidence: 91%

The Influence of Extraction Conditions on the Yield and Physico-Chemical Parameters of Pectin from Grape Pomace

Spinei

Oroian

2022

Polymers

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Grape pomace is one of the most abundant by-products generated from the wine industry. This by-product is a complex substrate consisted of polysaccharides, proanthocyanidins, acid pectic substances, structural proteins, lignin, and polyphenols. In an effort to valorize this material, the present study focused on the influence of extraction conditions on the yield and physico-chemical parameters of pectin. The following conditions, such as grape pomace variety (Fetească Neagră and Rară Neagră), acid type (citric, sulfuric, and nitric), particle size intervals (<125 µm, ≥125–<200 µm and ≥200–<300 µm), temperature (70, 80 and 90 °C), pH (1, 2 and 3), and extraction time (1, 2, and 3 h) were established in order to optimize the extraction of pectin. The results showed that acid type, particle size intervals, temperature, time, and pH had a significant influence on the yield and physico-chemical parameters of pectin extracted from grape pomace. According to the obtained results, the highest yield, galacturonic acid content, degree of esterification, methoxyl content, molecular, and equivalent weight of pectin were acquired for the extraction with citric acid at pH 2, particle size interval of ≥125–<200 µm, and temperature of 90 °C for 3 h. FT-IR analysis confirmed the presence of functional groups in the fingerprint region of identification for polysaccharide in the extracted pectin.

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Section: Resultssupporting

confidence: 91%

The Influence of Extraction Conditions on the Yield and Physico-Chemical Parameters of Pectin from Grape Pomace

Spinei

Oroian

2022

Polymers

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“…4b), 373 cm −1 for NiAl 2 O 4 (Fig. 4c)) that were attributed to the Al–O octahedral vibration, 31,32 as well as a low-intensity band near 500 cm −1 that was attributed to metal–oxygen bonding, specifically to the symmetrical Al–O stretching related to octahedral groups, 17,33 verifying the X-ray diffractometry results. Bands near 400 cm −1 (Fig.…”

Section: Resultssupporting

confidence: 75%

Color stability of blue aluminates obtained from recycling and applied as pigments

et al. 2023

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“…200 ºC, and exotherms at 250, 320 and 480 ºC, due to the decomposition of pectin chains. (Dalpasquale et al, 2016). FTIR shows stretching ʋ O-H associated to surface OH groups at 3420-3450 cm -1 , C-H stretching of CH₂ groups at 2920-2940 cm -1 , at 1745-1750 cm -1 the bands of C=O in esterified carboxyl COO-R appear, and at 1636-1611 cm -1 the bands of symmetric stretching vibrations of the carboxyl groups COOH.…”

Section: Resultsmentioning

confidence: 97%

Multivalorization of apple pomace towards materials and chemicals. Waste to wealth

Yates

Gómez

Martín-Luengo

et al. 2017

Journal of Cleaner Production

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The work presented here uses apple pomace (AP), an industrial waste from apple juice and cider production as a renewable raw material (RRM), to obtain materials that can be utilized as biocompatible scaffolds for osteoblasts and chondrocytes, employed in tissue engineering, valuable extracts that can be used as nutraceuticals and pectin. All of these have much higher value than the original raw material, pectin can be priced up to 1 euro/g, chlorogenic acid is ca. 120 euros/g, caffeic acid 3-5 euros/g and especially the scaffolds that are usually made by synthetic methods using non-renewable raw materials with high fabrication costs and sold at prices higher than 100 euros/g, while the residues used here have prices lower than 100 euros per ton. Thus, there are clear environmental and financial incentives in transforming this waste material into valuable substances and materials. As indicated in the Graphical Abstract, the procedure followed consists in sequential extractions of antioxidants, pectin and finally the preparation of a biocompatible material, giving priority to the latter due to its importance as a renewable scaffold for tissue engineering. From a literature search, to date, although separate ways of valorisation have been applied to this kind of waste, the sequential multivalorization adopted here, has not been previously attempted. Furthermore, biocompatible scaffolds from AP have not been described.

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Citrus pectin as a template for synthesis of colorful aluminates

Cited by 16 publications

References 36 publications

The Influence of Extraction Conditions on the Yield and Physico-Chemical Parameters of Pectin from Grape Pomace

The Influence of Extraction Conditions on the Yield and Physico-Chemical Parameters of Pectin from Grape Pomace

Color stability of blue aluminates obtained from recycling and applied as pigments

Multivalorization of apple pomace towards materials and chemicals. Waste to wealth

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