共查询到20条相似文献,搜索用时 140 毫秒
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Enzymatic process for extracting oil and protein from rice bran 总被引:16,自引:0,他引:16
P. Hanmoungjai D. L. Pyle K. Niranjan 《Journal of the American Oil Chemists' Society》2001,78(8):817-821
Enzymatic extraction of oil and protein from rice bran, using a commercial protease (Alcalase), was investigated and evaluated
by response surface methodology. The effect of enzyme concentration was most significant on oil and protein extraction yields,
whereas incubation time and temperature had no significant effect. The maximal extraction yields of oil and protein were 79
and 68%, respectively. Further, the quality of oil recovered from the process in terms of free fatty acid, iodine value, and
saponification value was comparable with solvent-extracted oil and commercial rice bran oil, but the peroxide value was higher. 相似文献
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葛根总黄酮的提取研究 总被引:1,自引:0,他引:1
用超声辅助提取葛根总黄酮,考察了超声功率、超声作用时间、提取温度和乙醇浓度等因素对葛根总黄酮提取率的影响。结果表明,超声提取葛根总黄酮的较佳工艺条件为:超声功率270 W,超声作用时间20 min,提取温度70℃,乙醇浓度为65%,此条件下总黄酮提取率为167.974 mg/100 g葛根粉。 相似文献
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P Hanmoungjai D
L Pyle K Niranjan 《Journal of chemical technology and biotechnology (Oxford, Oxfordshire : 1986)》2002,77(7):771-776
Enzymatic water‐extraction of oil and proteins from rice bran was studied in a laboratory‐scale set‐up. The effects of the following enzymes – Celluclast 1.5L, hemicellulase, Pectinex Ultra SP‐L, Viscozyme L, Alcalase 0.6L and papain – on oil and protein extraction yields, and the level of reducing sugars in the extract were investigated. The results showed that Alcalase was most effective in enhancing oil and protein extraction yields. Papain was found to be superior to all carbohydrase enzymes but it gave lower yields than Alcalase. Celluclast 1.5L, hemicellulase, Pectinex Ultra SP‐L and Viscozyme L did not affect yields significantly but increased the level of reducing sugars in the extract. © 2002 Society of Chemical Industry 相似文献
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米渣蛋白组成成分及提取工艺研究 总被引:1,自引:0,他引:1
以糖厂生产糖后米渣为原料,采用逐步提取法对米渣中各类蛋白质进行提取,研究了提取顺序、提取条件对蛋白提取率的影响。结果表明,提取顺序为清蛋白、醇溶蛋白、球蛋白、谷蛋白时,蛋白提取率最大;谷蛋白最佳提取工艺条件为:料液比为1∶13,NaOH浓度0.095 mol/L,提取温度为45℃,提取时间为4 h。并通过SAS软件分析各提取因素的影响及交互作用,表明料液比与碱浓度交互作用对谷蛋白提取率影响显著。 相似文献
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采用传统的溶剂浸提法提取白藜芦醇,以白藜芦醇的提取量为考察指标,进行正交试验,考察温度、乙醇浓度、液料比对白藜芦醇提取效果的影响。结果显示,乙醇浓度和料液比是影响白藜芦醇提取量的显著性因素。优化工艺参数为:温度70℃,乙醇浓度70%,液料比1∶20,提取时间1.5 h,该条件下,藜芦醇的得率为0.083%。该工艺稳定,可用于花生根中白藜芦醇的提取。 相似文献
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以木梨子果实为试验原料,采用浸提法从木梨子果实中提取胆碱,研究木梨子果实提取胆碱的最佳工艺条件。正交设计优选木梨子果实中胆碱的提取条件,用5%雷氏盐为对照品,测定波长在526nm处的吸光度。最佳提取条件是:硝酸水溶液比例为1∶5,提取时间5h,料液比为1∶20时胆碱提取量最高,为143mg/100g。 相似文献
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超声辅助皂化提取黑曲霉中辅酶Q_(10)的研究 总被引:2,自引:0,他引:2
通过高效液相色谱鉴定证实黑曲霉菌体中含有辅酶Q10。采用正交实验设计法,研究了超声辅助皂化提取黑曲霉中辅酶Q10的最佳工艺条件。实验表明,焦性没食子酸添加量、皂化温度、超声时间为影响皂化提取效果的显著因子。在75%乙醇溶剂下,最佳提取工艺条件为:焦性没食子酸加入量为培养物的8%,皂化温度40℃,皂化时间45 min,醇碱浓度7.5 g NaOH/75 mL乙醇,超声功率280 W。最优条件下辅酶Q10提取率为0.421 mg/g干培养基,明显优于常规皂化提取。 相似文献