[Objective] Relationship between extrusion texturization properties and physicochemical properties of soybeans varieties was investigated. The extrudate texturization properties include special mechanical energy, viscosity in slot die, and extrudates properties, such as texturization degree, tensile break strength, hardness, springiness, cohesiveness, and chewiness. [Method] Eighteen soybean varieties from Northeast China were studied using a Brabender DSE-25 twin-screw extruder and statistic method of correlation analysis. [Result] The results showed that the crude protein content was positively correlated with special mechanical energy and viscosity in slot die during extrusion (α=0.05). Crude protein content and water-soluble protein content were positively correlated with tensile break strength and anti-cut of extrudates (α=0.05). Crude fiber content was negatively correlated with cutting force vertical extrusion direction, texturization degree and springiness ofextrudates (α=0.05). Ash content was negatively correlated with special mechanical energy, viscosity in slot die during extrusion and cohesiveness of extrudates (α=0.05). [Conclusion] The conclusion is that the crude protein, crude fiber and water-soluble protein contents should be considered in breeding soybean varieties especially for extrusion. The soybean varieties that are suitable for extrudates with high texturization degree, tensile break strength and springiness should be high in protein, high in water-soluble protein and low in fiber content.%[目的]研究不同大豆品种籽粒理化特性、脱脂大豆粉理化特性与挤压组织化产品特性的关系,探讨用于评价加工挤压组织化大豆产品品种的特性指标.[方法]以东北三省18个大豆品种为原料,以德国Bradender DSE-25型同向啮合双螺杆挤压机为挤压组织化设备,分析不同大豆品种籽粒理化指标、脱脂粉理化指标与挤压组织化加工工艺系统参数、产品特性的相关关系.[结果]大豆籽粒、脱脂粉粗蛋白含量与挤压组织化单位机械能耗、表观黏度呈显著正相关(α=0.05).籽粒粗蛋白,水溶性蛋白及脱脂粉粗蛋白含量与产品的拉伸强度、抗剪切力呈显著正相关(α=0.05).脱脂粉粗纤维含量与产品的横切力、组织化度,弹性呈显著负相关(α=0.05).脱脂粉灰分含量与单位机械能耗、表观黏度呈显著负相关,与产品聚结性呈负相关(α=0.05).[结论]选择粗蛋白含量高、水溶性蛋白含量高、粗纤维含量较低的原料或大豆品种,可以生产出组织化度较好、弹性、拉伸强度较大的挤压组织化产品.选育适用于挤压组织化加工的大豆品种时,应重点考虑提高粗蛋白含量、水溶性蛋白含量,同时降低粗纤维含量.
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