超临界流体萃取大蒜油的工艺研究

对温度、时间、压力对超临界二氧化碳萃取大蒜的影响进行了研究，通过正交试验得到最佳的工艺条件，并对试验所得产物进行测定。     

乙醇法提取苦丁茶超细粉体中茶多酚的研究

研究了苦丁茶超细粉体的有效成分棗茶多酚在乙醇中的溶出特性,测试提取时间、乙醇浓度等对溶出效果的影响,通过正交试验找出了提取工艺的最佳条件为粉体粒度为280~360目,温度为70,乙醇浓度为80%,时间为30min,液料比110。     

从马齿苋中提取叶蛋白工艺的研究

采用酸法及加热法，分析了从马齿苋中提取叶蛋白的工艺条件。结果表明：从马齿苋中提取叶蛋白工艺的最佳条件：加热时间为9min，加热温度为75℃，盐酸调pH值为3，液料比为4；该工艺提取叶蛋白的提取率为0.95％，叶蛋白的沉淀率为20.02％。     

响应面法优化超声提取芝麻叶黄酮的研究

采用响应面分析方法优化芝麻叶中黄酮化合物的超声辅助提取条件.利用中心组合设计研究乙醇浓度、液固比、超声提取时间、超声功率4个自变量对响应值黄酮得率的影响.用SAS 8.1进行结果分析.响应面的典型分析可知稳定点是最大值.决定系数为0.9007.分析回归系数可知：乙醇浓度对响应值的影响极其显著（p＜0.001）.黄酮最佳提取工艺条件为：乙醇浓度56%,液固比：25∶1,超声提取时间36 min,超声功率：330 W,在此条件下黄酮得率为3.460%.     

Extraction of lignans, proteins and carbohydrates from flaxseed meal with pressurized low polarity water

This study examined the application of pressurized low polarity water (PLPW) extraction of lignans, proteins and carbohydrates from defatted flaxseed meal. Key processing conditions included temperature (130, 160, 190 °C), solvent pH (4, 6.5 and 9), solvent to solid ratio (90, 150 and 210 mL/g) and introduction of co-packing material (0 and 3 g glass beads). The addition of 3 g glass beads increased the yields for all target compounds. The maximum yield of lignans (21 mg/g meal) was obtained at 170 °C with solvent to solid ratio of 100 mL/g meal at pH 9. Optimal conditions for protein extraction were pH 9, solvent to solid ratio of 210 mL/g meal and 160 °C. Total carbohydrates recovery was maximized at 215 mg/g meal (50% recovery) at pH 4 and 150 °C with solvent to solid ratio of 210 mL/g meal. The increase of temperature accelerated extraction, thus reducing solvent volume and time to reach equilibrium. For the extraction of proteins and carbohydrates, however, a temperature of 130-160 °C is recommended, as proteins and carbohydrates are vulnerable to thermal degradation.     

Carotenoid pigment loss of freeze-dried plant samples under different storage conditions

Enzyme extracted carotenoid pigments from orange peel, sweet potato and carrot samples were freeze-dried and stored at 25°C light, 25°C dark, 4°C and 40°C. Color losses of freeze-dried pigments under these storage conditions were compared with the non-dried samples. For the freeze-dried samples, the highest pigment loss was in carrot pigments stored at 40°C (98.1 g/100 g) while the lowest loss was in sweet potato pigments stored in 4°C (11.3 g/100 g) during 45 days of storage. For all three samples, pigment loss was minimum at 4°C and maximum at 40°C as expected. Storage under light did not have significant effect on the carotenoid loss compared with the samples stored at dark. Freeze-drying lowered the pigment loss for all samples under all storage conditions.     

微波对葡萄籽中低聚原花青素(OPC''''s)提取的影响

探索了微波对从葡萄籽中提取低聚原花青素的影响，实验结果为：功率为500W，时间为15in．料液比为1：9，在此条件下提取率达到38％，超过传统水煮法。     

大豆低聚糖的研究进展

大豆低聚糖对人体具有多种保健功效，因而在食品中的应用日趋广泛。文章论述了大豆低聚糖的分布、生物合成途径及其生理功能和理化性质，并从提取、纯化方法等方面综述了近年来大豆低聚糖制备的研究进展。     

绿茶杀青叶浸提物理化特性研究

研究了提取温度对绿茶杀青叶提取物的物理和化学特性的影响。结果表明,茶汤固形物、茶多酚、咖啡因、氨基酸和主要儿茶素类化合物的提取率随提取温度上升而提高;茶汤明度和绿色程度随提取温度上升而下降;冷后浑和黄色程度随提取温度上升而提高。结论:在50℃提取的绿茶杀青叶提取物作为绿茶饮料的原料较理想。