Farahmandfar Reza, Asnaashari Maryam, Salahi Mohammad Reza, Khosravi Rad Tandis
Department of Food Science and Technology, Sari Agricultural Sciences & Natural Resources University (SANRU), Sari, Iran.
Department of Food Science and Technology, Ferdowsi University of Mashhad (FUM), Mashhad, Iran.
Int J Biol Macromol. 2017 May;98:820-828. doi: 10.1016/j.ijbiomac.2017.02.046. Epub 2017 Feb 14.
This study focuses on the physical, textural and rheological properties of low fat (LF) whipped cream with 30% fat content developed with Basil seed gum (BSG), Cress seed gum (CSG) and Quince seed gum (QSG) at the concentration of 0.1 and 0.3% (w/w) and comparison with high fat (HF) whipped cream sample (55%) as control. Flow curves were analyzed using Herschel bulkey and Carreau models through a fitting procedure. The rheological investigations confirmed that all samples were shear thinning fluid exhibiting a yield stress and thixotropy properties. The frequency sweep test showed that at the same gum concentration, mixes containing BSG have higher G', G″ and η than those of mixes with QSG and CSG, and all mixes containing gum displayed weak gel-like behavior. Analysis showed that adding and increasing gums concentration caused to increased viscosity, hardness and overrun, leading to a better quality in the final products. Moreover, textural properties showed that the effect of BSG on hardness and adhesiveness was significantly greater than QSG and CSG at the same concentration. Based on obtained result, 0.3% concentration of added BSG had a much greater effects on the whipped cream properties than those of mixes with QSG and CSG.
本研究聚焦于以0.1%和0.3%(w/w)浓度的罗勒籽胶(BSG)、水芹籽胶(CSG)和榅桲籽胶(QSG)制备的脂肪含量为30%的低脂(LF)搅打奶油的物理、质地和流变特性,并与高脂肪(HF)搅打奶油样品(55%)作为对照进行比较。通过拟合程序,使用赫谢尔-布尔基模型和卡罗模型分析流动曲线。流变学研究证实,所有样品均为剪切变稀流体,表现出屈服应力和触变性。频率扫描测试表明,在相同的胶浓度下,含BSG的混合物比含QSG和CSG的混合物具有更高的G'、G″和η,并且所有含胶混合物均表现出弱凝胶状行为。分析表明,添加和增加胶的浓度会导致粘度、硬度和膨胀率增加,从而使最终产品质量更好。此外,质地特性表明,在相同浓度下,BSG对硬度和粘附性的影响明显大于QSG和CSG。基于所得结果,添加0.3%浓度的BSG对搅打奶油特性的影响远大于含QSG和CSG的混合物。