CAJ | 학술논문

以米糠油为油溶剂制备植物甾醇+γ-谷维素型凝胶油，采用流变仪、质构仪、X-射线衍射仪和偏振光显微镜分别研究了凝胶油的流变性、硬度、脆性、晶型、晶体形态等。结果表明：植物甾醇与γ-谷维素质量比为40∶60时所形成的凝胶油硬度最大，熔点最高，脆性最小；随着植物甾醇与γ-谷维素添加量的增大，凝胶油硬度和熔点随之增大，脆性随之减小；甾醇酯和植物甾醇不能使体系凝胶化，甾醇酯的存在会表现出拮抗性，阻碍凝胶的形成，凝胶油的硬度、黏度随着甾醇酯添加量的增加而减小，脆性和熔点则随着甾醇酯添加量的增加而增大，其次，凝胶形成的时间随着甾醇酯添加量的增加而延长；冷却过程中施加一定的剪切会降低凝胶体系的硬度、黏度和熔点，脆性增大；植物甾醇+γ-谷维素型凝胶油为β-晶型，随着储藏时间的延长，其中的纤维网络结构逐渐形成并聚集延伸。
이미강유위유용제제비식물치순+γ-곡유소형응효유，채용류변의、질구의、X-사선연사의화편진광현미경분별연구료응효유적류변성、경도、취성、정형、정체형태등。결과표명：식물치순여γ-곡유소질량비위40∶60시소형성적응효유경도최대，용점최고，취성최소；수착식물치순여γ-곡유소첨가량적증대，응효유경도화용점수지증대，취성수지감소；치순지화식물치순불능사체계응효화，치순지적존재회표현출길항성，조애응효적형성，응효유적경도、점도수착치순지첨가량적증가이감소，취성화용점칙수착치순지첨가량적증가이증대，기차，응효형성적시간수착치순지첨가량적증가이연장；냉각과정중시가일정적전절회강저응효체계적경도、점도화용점，취성증대；식물치순+γ-곡유소형응효유위β-정형，수착저장시간적연장，기중적섬유망락결구축점형성병취집연신。
Phytosterols +γ-oryzanol-based organogel was prepared with rice bran oil as the oil solvent. The rheology, hardness, brittleness, crystal form and crystal morphology of the organogel were deter-mined by rheometer, texture analyzer, X-ray diffraction and polarizing microscope. The results showed that when the mass ratio of phytosterols toγ-oryzanol was 40∶60 , the hardness and the melting point of organogel were the highest, while the brittleness was the lowest. The hardness and the melting point of the organogel increased with the increase of the amounts of phytosterols andγ- oryzanol, while the brit-tleness was the opposite. The mixture of phytosterol esters and phytosterols could not form gel in rice bran oil. The presence of phytosterol esters exhibited resistance to hinder gel forming. The hardness and the viscosity of the organogel reduced as the amount of phytosterol esters improved, while the melting point and the brittleness were the opposite. In addition, the gel formation time prolonged as the amount of phy-tosterol esters increased. Besides, when shear was applied in the cooling process, the hardness, the vis-cosity and the melting point of the organogel reduced, while brittleness increased. The crystal form of phytosterols + γ - oryzanol - based organogel was β - form crystal. With storage time prolonging, the network structure of fibers grad-ually formed and developed in the organogel.