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LDH-intercalated D-gluconate: generation of a new food additive-inorganic nanohybrid compound


Ghotbi, Mohammad Yeganeh and Hussein, Mohd. Zobir and Yahya, Asmah and Ab Rahman, Mohamad Zaki (2009) LDH-intercalated D-gluconate: generation of a new food additive-inorganic nanohybrid compound. Journal of Physics and Chemistry of Solids, 70 (6). pp. 948-954. ISSN 0022-3697; ESSN: 1879-2553


Intercalation of d-gluconate into the interlamellae of zinc–aluminum-layered double hydroxide for the formation of a food additive-inorganic layered nanohybrid was accomplished by both direct (co-precipitation) and indirect (ion-exchange) methods. Powder X-ray diffraction (PXRD) together with CHNS and Fourier transform infrared (FTIR) analyses showed that the hybridization of d-gluconate with pure phase and good crystallinity was successfully accomplished by a direct method within ranges of pH 7.5–10, Zn to Al initial molar ratio of 2–5 and DG concentration of 0.05–0.3 M. The same nanohybrid compound was also prepared using an indirect ion-exchange method by contacting the pre-prepared LDH with 0.1 M DG for 80 min. The basal spacing of the nanohybrid synthesized by the direct method ranged between 9 and 12.0 Å while that synthesized by the indirect ion-exchange method was 14.0 Å. The crystallinity of the latter was higher than the former and it inherited the crystallinity of the precursor. This work shows that a food additive, such as d-gluconate, can be hybridized into an inorganic host for the formation of a new nanohybrid compound, which can be used to regulate the release of acidity in the food industry.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Institute of Advanced Technology
DOI Number: https://doi.org/10.1016/j.jpcs.2009.05.007
Publisher: Pergamon Press
Keywords: Nanostructure; Inorganic compound; Chemical synthesis; X-ray diffraction
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 01 Aug 2015 00:04
Last Modified: 27 Nov 2015 08:36
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.jpcs.2009.05.007
URI: http://psasir.upm.edu.my/id/eprint/15426
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