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Physicochemical Properties of Mammalian Gelatin in Relation to Membrane Process Requirement

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Abstract

In any of the membrane process application, understanding of the characteristics of the feed solution is essential in order to achieve desired level of separation performance. In this study, in an effort to substitute evaporation with membrane processes partially, experiments were carried out to investigate the physicochemical properties of gelatins, namely, molecular weight distribution, pH, viscosity, isoelectric point, and gel strength, which are, of foremost, important parameters in the characterization of gelatin. Two different mammalian gelatins, i.e. from bovine (type B) and porcine (type A) sources, were used in this study. The pH was significantly varied for all gelatins in the vicinity of 4.75–5.51 (±0.01). Experimental result revealed that both sources of mammalian gelatin contained components of different molecular weights with wide distribution ranging from 10 to 400 kDa. Analysis of the molecular weight distribution result also showed strong correlation between average molecular weight and gel strength of gelatin. The isoelectric points of gelatins from bovine were 4.60 ± 0.08 to 5.25 ± 0.43 and porcine gelatins were in the range of 7–9.3, which agreed well with the results obtained from other researchers. The high bloom strength mammalian gelatins were also significantly more viscous and thus, had a higher melting point.

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Acknowledgment

The authors would like to acknowledge the financial grant funded by Universiti Kebangsaan Malaysia via grant UKM-GUP-KPB-08-32-129 and TF0206A084. The authors would also like to acknowledge Halagel (M) Sdn Bhd for their donation of the gelatin.

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Authors and Affiliations

  1. Scale-up and Downstream Processing Research Group Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600, UKM Bangi, Selangor, Malaysia

    Ying Pei Lim & Abdul Wahab Mohammad

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  1. Ying Pei Lim
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  2. Abdul Wahab Mohammad
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Correspondence to Abdul Wahab Mohammad.

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Ying Pei Lim was on study leave from Faculty of Chemical Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia.

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Lim, Y.P., Mohammad, A.W. Physicochemical Properties of Mammalian Gelatin in Relation to Membrane Process Requirement. Food Bioprocess Technol 4, 304–311 (2011). https://doi.org/10.1007/s11947-009-0285-9

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  • DOI: https://doi.org/10.1007/s11947-009-0285-9

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