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  • Title: Using Cellulose Nanofibers and Its Palm Oil Pickering Emulsion as Fat Substitutes in Emulsified Sausage.
    Author: Wang Y, Wang W, Jia H, Gao G, Wang X, Zhang X, Wang Y.
    Journal: J Food Sci; 2018 Jun; 83(6):1740-1747. PubMed ID: 29745986.
    Abstract:
    UNLABELLED: Nano cellulose is attracting great interest in food and nutraceutical fields and also provides a potential additive to develop functional meat products such as low fat sausage. Here, we compared 1 wt% aqueous dispersion of cellulose nanofiber (CNF) and its palm oil Pickering emulsion (CPOE) at the ratio of 1:1 (water: oil, v:v) for being fat alternatives replacing 30% and 50% of the original fat of the emulsified sausage. Replacing fat by CPOE and CNF resulted in lower fat content, lower cooking loss and higher moisture content and higher lightness values (P ≤ 0.05) at both fat levels. Textural analysis indicated that the products formulated with CPOE showed higher hardness, springiness, chewiness and the texture was enhanced by the addition of CNF, especially when 30% fat was substituted. Compared with the full-fat control, the sausages formulated with CPOE became more elastic and compact, especially by the incorporation of CNF according to the rheology and scanning electron microscope results. The reformulated products with CPOE and CNF at the 30% level showed higher sensory scores (P ≤ 0.05) while at the 50% level produced comparable quality to the control, but no significant differences were found in the overall acceptability. In summary, CNF and its Pickering emulsion provide the potential as potential fat alternatives for developing low fat meat products. PRACTICAL APPLICATIONS: Cellulose nanofibers present a variety of distinguishing properties, such as large surface area, great stability and high strength. The ability to stabilize emulsions and good biocompatibility enlarge its application in food. In this study, we attempted to use cellulose nanofibers and its palm oil Pickering emulsion as fat substitutes to partly replace the original fat of pork emulsified sausages, hoping to provide some basic information for using cellulose nanofibers and its Pickering emulsion as fat substitute to high fiber, low fat meat products.
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