Transfer Research center for controlled release, Phenomena Laboratory (TPL), Department of Food Science, Technology and Engineering, College of Agriculture and Natural resources, University of Tehran, Iran.
Transfer Research center for controlled release, Phenomena Laboratory (TPL), Department of Food Science, Technology and Engineering, College of Agriculture and Natural resources, University of Tehran, Iran.
Carbohydr Polym. 2019 Feb 15;206:565-572. doi: 10.1016/j.carbpol.2018.11.035. Epub 2018 Nov 13.
A high molecular weight biopolymer was extracted from the fruits Opuntia ficus indica and characterized regarding physicochemical and rheological properties. Total carbohydrate, ash and moisture content of the polysaccharide extracted from the fruits of Opuntia ficus indica (OFIFG) were 88.85 ± 5.2%, 9.00 ± 1.30%, and 7.65 ± 0.74%, respectively. OFIFG had glucose (78.0%), arabinose (12.9%), xylose (4.8%), galactose (2.4%), and mannose (2.4%), suggesting an arabinoglucan structure. Weight average molecular weight of OFIFG was to be 3.67 × 10 g/mol. The intrinsic viscosity of OFIFG was 0.37 dL/g in deionized water at 25 °C. Steady shear measurement demonstrated that OFIFG is a shear thinning fluid. At low frequency, the gum solution exhibited a concentrated behavior. The anti-DPPH radicals activity of the gum sample was comparable to that of BHT and more than the data cited for other natural polymers. It can be found that OFIFG can be used as thickener, stabilizer and antioxidant agent in food and pharmaceutical systems.
从果实仙人掌中提取了一种高分子量的生物聚合物，并对其理化和流变性能进行了表征。从仙人掌果实中提取的多糖的总碳水化合物、灰分和水分含量分别为 88.85±5.2%、9.00±1.30%和 7.65±0.74%。OFIFG 含有葡萄糖（78.0%）、阿拉伯糖（12.9%）、木糖（4.8%）、半乳糖（2.4%）和甘露糖（2.4%），表明其具有阿拉伯半乳聚糖结构。OFIFG 的重均分子量为 3.67×10 g/mol。在 25°C 的去离子水中，OFIFG 的特性粘度为 0.37 dL/g。稳态剪切测量表明，OFIFG 是一种剪切稀化流体。在低频下，胶溶液表现出浓缩行为。该胶样的抗 DPPH 自由基活性可与 BHT 相媲美，且优于其他天然聚合物的相关数据。由此可见，OFIFG 可作为增稠剂、稳定剂和抗氧化剂应用于食品和制药系统。
