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Functional and preliminary characterisation of hydrocolloid from tamarillo (Solanum betaceum Cav.) puree


Gannasin, Sri Puvanesvari and Ramakrishnan, Yogeshini and Mohd Adzahan, Noranizan and Syed Muhammad, Sharifah Kharidah (2012) Functional and preliminary characterisation of hydrocolloid from tamarillo (Solanum betaceum Cav.) puree. Molecules, 17 (6). pp. 6869-6885. ISSN 1420-3049


Hydrocolloid from tamarillo (Solanum betaceum Cav.) puree was extracted using water and characterised for the first time. Proximate compositions of the extracted hydrocolloid were also determined. Functional characteristics such as water-holding capacity, oil-holding capacity, emulsifying activity, emulsion stability, foaming capacity and stability of the hydrocolloid were evaluated in comparison to that of commercial hydrocolloids. Its functional groups and degree of esterification were determined using Fourier Transform Infrared (FT-IR) spectroscopy. Monosaccharide profiling was done using reverse-phase high pressure liquid chromatography (RP-HPLC). Screening of various fruits for high hydrocolloid yield after water extraction resulted in tamarillo giving the highest yield. The yield on dry weight basis was 8.30%. The hydrocolloid constituted of 0.83% starch, 21.18% protein and 66.48% dietary fibre with 49.47% degree of esterification and the monosaccharides identified were mannose, ribose, rhamnose, galacturonic acid, glucose, galactose, xylose and arabinose. Higher oil-holding capacity, emulsifying activity and emulsion stability compared to commercial hydrocolloids propose its possible application as a food emulsifier and bile acid binder. Foaming capacity of 32.19% and good foam stabilisation (79.36% of initial foam volume after 2 h of foam formation) suggest its promising application in frothy beverages and other foam based food products. These findings suggest that water-extracted tamarillo hydrocolloid can be utilised as an alternative to low methoxyl pectin.

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Official URL or Download Paper: https://www.mdpi.com/1420-3049/17/6/6869

Additional Metadata

Item Type: Article
Divisions: Faculty of Food Science and Technology
DOI Number: https://doi.org/10.3390/molecules17066869
Publisher: MDPI
Keywords: Tamarillo; Hydrocolloid; Extraction; Functional; FT-IR; RP-HPLC
Depositing User: Nabilah Mustapa
Date Deposited: 01 Jun 2020 03:13
Last Modified: 01 Jun 2020 03:13
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.3390/molecules17066869
URI: http://psasir.upm.edu.my/id/eprint/77993
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