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Thermal and structural characteristics of date-pits as digested by . | LitMetric

AI Article Synopsis

  • - The study aimed to create functional date-pits through mold digestion, testing both whole and defatted date-pits at 20°C, finding that defatted date-pits supported more mold growth.
  • - Mold digestion enhanced the water solubility and hygroscopicity of the date-pits compared to autoclaved samples, indicating a transformation to more hydrophilic properties.
  • - Thermal analysis revealed significant structural changes in both untreated and mold-digested date-pits, including multiple glass transitions and specific heat changes, suggesting that mold digestion increased the amorphous fraction in the defatted date-pits.

Article Abstract

The objective of this study was to develop functional date-pits by mold digestion for the potential use in food products. Whole date-pits (WDP) and defatted date-pits (DDP) were digested by mold at 20 °C. consumed date-pits as nutrients for their growth, and DDP showed higher growth of molds as compared to the WDP. The mold digested WDP and DDP samples showed an increased water solubility and hygroscopicity as compared to the samples prepared by autoclaved. This indicated that the mold digestion transformed date-pits to hydrophilic characteristics. Thermal analysis indicated a structural change at -3.2 °C for the untreated WDP and it was followed by a glass transition shift (i.e. onset: 138 °C and a specific heat change: 295 J/kg C), and an endothermic peak at 196 °C with enthalpy of 68 J/g for the solids melting-decomposition. Similar characteristics were also observed for treated samples with the two glass transitions. The total specific heat changes for WDP, autoclaved-WDP, and digested-WDP were observed as 295, 367, and 328 J/kg C, respectively. The total specific heat changes for DDP, autoclaved-DDP, and digested-DDP were observed as 778, 1329, and 1877 J/kg C, respectively. This indicated that mold digestion transformed more amorphous fraction in the DDP. The energy absorption intensities of the Fourier Transform Infrared (FTIR) spectra for the selected functional groups decreased by the mold digestion.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10979217PMC
http://dx.doi.org/10.1016/j.heliyon.2024.e28313DOI Listing

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