Key Laboratory of Jianghuai Agricultural Product Fine Processing and Resource Utilization, Anhui Engineering Research Center for High-Value Utilization of Characteristic Agricultural Products, School of Tea & Food Science and Technology, Anhui Agricultural University, Hefei, China.
Bioactivity and Applications Laboratory, Department of Biological Sciences, Faculty of Science and Engineering, University of Limerick, Limerick, Ireland.
Int J Biol Macromol. 2024 Nov;279(Pt 4):135344. doi: 10.1016/j.ijbiomac.2024.135344. Epub 2024 Sep 17.
This study aimed to utilize blueberry pectin and calcium chloride to design a gel network structure for loading nut oils (peanut and walnut oil, respectively). The optimization of emulsion gel preparation was conducted through orthogonal experiments, utilizing the oil-holding ratio and gel strength as critical indicators. The emulsion gel was applied to the ice cream production. It was revealed that the peroxide value of the nut oil emulsion gels was significantly lower than that of nut oils. Both nut oil emulsion gel ice creams exhibited higher expansion rates, lower melting rates, and decreased hardness than the nut oil ice creams. Notably, walnut oil emulsion gel ice cream demonstrated a melting rate similar to traditional butter-based ice cream. Emulsion gel ice cream has higher fat globule instability and viscosity. Overall, the comprehensive emulsion gel ice cream indicators were comparable to conventional butter ice cream and notably superior to peanut and walnut oil ice cream. Using emulsion gel as a fat substitute in ice cream was feasible. The implications of these results were significant for advancing the utilization of nut oil emulsion gel within the ice cream industry.
本研究旨在利用蓝莓果胶和氯化钙设计一种用于负载坚果油（分别为花生油和核桃油）的凝胶网络结构。通过正交实验，以持油率和凝胶强度为关键指标，对乳液凝胶的制备进行优化。将乳液凝胶应用于冰淇淋生产中。结果表明，坚果油乳液凝胶的过氧化物值明显低于坚果油。与坚果油冰淇淋相比，两种坚果油乳液凝胶冰淇淋的膨胀率更高，融化率更低，硬度更低。值得注意的是，核桃油乳液凝胶冰淇淋的融化率与传统的黄油基冰淇淋相似。乳液凝胶冰淇淋的脂肪球不稳定性和粘度更高。总的来说，综合乳液凝胶冰淇淋的指标与传统的黄油冰淇淋相当，明显优于花生和核桃油冰淇淋。在冰淇淋中使用乳液凝胶作为脂肪替代品是可行的。这些结果对于推动坚果油乳液凝胶在冰淇淋行业中的应用具有重要意义。
