In order to improve the comprehensive utilization value of water chestnut peel and the income of farmers. Contents of crude protein ( CP), total sugar and reducing sugar were taken as indicators. Effects of initial ...In order to improve the comprehensive utilization value of water chestnut peel and the income of farmers. Contents of crude protein ( CP), total sugar and reducing sugar were taken as indicators. Effects of initial pH, ratio of yeast to fungi species, incubation time and liquid volume on production of single cell pro- tein (SCP) feed was studied, and technological conditions on production of SCP feed by water chestnut peel were optimized by orthogonal test. Results showed that the production of SCP feed by water chestnut peel was optimal when pH was 5.0, ratio of yeast to fungi species was 2: 1, fermentation time was 2 d and the liquid volume was 70 mL / 250 mL. Under the optimum conditions, content of fermentation CP was 64.25%, content of total sugar was 19.8%, content of reducing sugar was 5.0%, content of coarse fibre was 0.0% and content of ash was 8.04%.展开更多
探讨了微波辅助提取马蹄皮总黄酮的工艺条件。采用分光光度法测定马蹄皮总黄酮的含量,在单因素实验的基础上确定微波辅助提取马蹄皮总黄酮的最佳工艺条件为:微波功率300 W,微波辐射时间5 m in,乙醇浓度40%,料液比1∶25。在最佳工艺条件...探讨了微波辅助提取马蹄皮总黄酮的工艺条件。采用分光光度法测定马蹄皮总黄酮的含量,在单因素实验的基础上确定微波辅助提取马蹄皮总黄酮的最佳工艺条件为:微波功率300 W,微波辐射时间5 m in,乙醇浓度40%,料液比1∶25。在最佳工艺条件下,马蹄皮总黄酮提取率达1.31%,比相同条件下普通浸提法提取2 h的提取率提高12.93%。微波辅助提取马蹄皮总黄酮是一种快速高效的新方法。展开更多
以低温烘干的荸荠皮为原料,利用纤维素酶法提取荸荠皮中的多糖,通过单因素实验和正交实验考察了p H、酶用量、液料比、酶解温度、酶解时间对多糖提取效果的影响。结果表明:当p H为5,酶用量为2.0%,液料比为30∶1 m L/g,酶解温度为60℃,...以低温烘干的荸荠皮为原料,利用纤维素酶法提取荸荠皮中的多糖,通过单因素实验和正交实验考察了p H、酶用量、液料比、酶解温度、酶解时间对多糖提取效果的影响。结果表明:当p H为5,酶用量为2.0%,液料比为30∶1 m L/g,酶解温度为60℃,酶解时间为2 h时,得率最高。在此条件下作了5次平行实验,平均得率可达32.33%,远大于相同条件下水提法的得率18.31%,而且实验重现性好。因此,用于荸荠皮中多糖提取的纤维素酶法是一种很有发展前途的提取方法。展开更多
基金Supported by Guangxi Science and Technology Development Project:Construction of Technology Services Platform of Hezhou Agricultural Science and Technology Park(14258003)Guangxi Higher Education Teaching Reform Project:Research on Regional Academic Specialty Biological Experiment Teaching Mode Innovation and Service of Local Economy(2014JGZ145)
文摘In order to improve the comprehensive utilization value of water chestnut peel and the income of farmers. Contents of crude protein ( CP), total sugar and reducing sugar were taken as indicators. Effects of initial pH, ratio of yeast to fungi species, incubation time and liquid volume on production of single cell pro- tein (SCP) feed was studied, and technological conditions on production of SCP feed by water chestnut peel were optimized by orthogonal test. Results showed that the production of SCP feed by water chestnut peel was optimal when pH was 5.0, ratio of yeast to fungi species was 2: 1, fermentation time was 2 d and the liquid volume was 70 mL / 250 mL. Under the optimum conditions, content of fermentation CP was 64.25%, content of total sugar was 19.8%, content of reducing sugar was 5.0%, content of coarse fibre was 0.0% and content of ash was 8.04%.
文摘探讨了微波辅助提取马蹄皮总黄酮的工艺条件。采用分光光度法测定马蹄皮总黄酮的含量,在单因素实验的基础上确定微波辅助提取马蹄皮总黄酮的最佳工艺条件为:微波功率300 W,微波辐射时间5 m in,乙醇浓度40%,料液比1∶25。在最佳工艺条件下,马蹄皮总黄酮提取率达1.31%,比相同条件下普通浸提法提取2 h的提取率提高12.93%。微波辅助提取马蹄皮总黄酮是一种快速高效的新方法。