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  • Title: O/W Pickering emulsions stabilized by Flammulina velutipes polysaccharide nanoparticles as a fat substitute: the effects of phase separation on emulsified sausage's techno-functional and sensory quality.
    Author: Yang Y, Wang W, Wu Z, Wang X, Zhang K, Li Y.
    Journal: J Sci Food Agric; 2020 Jan 15; 100(1):268-276. PubMed ID: 31512249.
    Abstract:
    BACKGROUND: The application of Pickering emulsion stabilized by food-derived particles is of great interest in the food field, including meat processing. However, the creaming phenomenon is a thorny problem and may impact the resulting product quality. Here, we used polysaccharide nanoparticles from Flammulina velutipes (FVPN) as a stabilizer to prepare a oil/water Pickering emulsion and partly replace the original fat of common emulsified sausage, focusing on exploring the influence of phase separation on the sausage's techno-functional and sensory quality, with the aim of developing a new alternative fat substitute. RESULTS: Reformulated sausages showed increases in moisture (53.24-64.85%) and protein content (11.97-12.76%), but were reduced in fat content (27.28-18.76%). The increased FPOE (FVPN-palm oil emulsion; substitution rate 5-37%) amount in sausages resulted in significantly reduced (P < 0.05) cooking loss (18.87-8.63%). Meanwhile, emulsion improved the springiness and cohesiveness of sausage and significantly reduced (P < 0.05) hardness and chewiness when the replacement amount was less than 20%. Experimental sausages attained a more compact pore structure without harming sensory characteristics. Compared with creaming emulsion, pristine emulsion resulted in a sausage with higher moisture content, lower cooking loss, better elasticity and denser structure. CONCLUSION: The characteristics of sausages could be influenced by emulsion stability. Emulsion, especially with no creaming, can be effectively used as fat substitute at a level of 20% or less without adversely affecting the sensory characteristics of emulsified sausages. The incorporation of FPOE provides the potential for developing a new alternative approach for animal fat improvement in meat products. © 2019 Society of Chemical Industry.
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