One trial was conducted to study nutrition digestibility of Euchsaena mexicana Schrad (EMC) diets for Wulong Goose. Thirty-two geese of 9 months old were selected and divided into four groups randomly, with eight gees...One trial was conducted to study nutrition digestibility of Euchsaena mexicana Schrad (EMC) diets for Wulong Goose. Thirty-two geese of 9 months old were selected and divided into four groups randomly, with eight geese in each group. Four groups were fed with the isocaloric and isonitrogenous diets of different EMC contents (12, 19, 25 and 31%), respectively. The results showed that, as dietary EMC increased, dry matter (DM) digestibility was decreased significantly, meanwhile the digestibility of crude fiber (CF), neutral detergent fiber (NDF) and acid detergent fiber (ADF) increased significantly (P<0.05). The ratio of apparent essential amino acid (EAA) digestibility (except Leu) among the four groups had significant difference (P<0.01). the content of NH3-N in feces dropped (P>0.05). There were no significant differences in net protein utilization (NPU), N apparent digestibility, N deposition and Ca apparent digestibility in different groups (P> 0.05). The apparent digestibility of P in different groups elevated, while there was significant difference between group D and A (P<0.01), and there was significant difference between group D and B (P<0.05).展开更多
In order to examine the most appropriate collecting time, HPLC\|ELSD and colorimetric methods were respectively used to determine the content of momordin Ic and total saponins in \%Kochia scoparia \%(L.) Schrad. fruit...In order to examine the most appropriate collecting time, HPLC\|ELSD and colorimetric methods were respectively used to determine the content of momordin Ic and total saponins in \%Kochia scoparia \%(L.) Schrad. fruit at different collecting times. It was shown that the best collecting time was when fruit just matured.展开更多
【目的】通过响应面法优化超声辅助纤维素酶提取扫帚菜多糖的工艺,评价多糖的抗氧化活性。【方法】在单因素试验的基础上,以多糖提取率为响应值,选择酶用量、超声温度、超声时间和液料比进行Box-Behnken试验设计,研究了各工艺条件及其...【目的】通过响应面法优化超声辅助纤维素酶提取扫帚菜多糖的工艺,评价多糖的抗氧化活性。【方法】在单因素试验的基础上,以多糖提取率为响应值,选择酶用量、超声温度、超声时间和液料比进行Box-Behnken试验设计,研究了各工艺条件及其交互作用对扫帚菜多糖提取率的影响,得到了二次多项式回归方程模型,并以猪油的抗氧化性能来评价多糖的抗氧化活性。【结果】扫帚菜多糖的最佳提取工艺条件为:酶用量2.1%、超声温度51℃、超声时间20 min、液料比25 m L/g,该条件下扫帚菜多糖的提取率为65.93 mg/g,与理论预测值的相对误差为0.21%。扫帚菜多糖对猪油有一定的抗氧化能力。【结论】利用响应面法优化超声辅助纤维素酶提取扫帚菜多糖的工艺有效、可靠,扫帚菜多糖能有效提高猪油产品的货架期。展开更多
文摘One trial was conducted to study nutrition digestibility of Euchsaena mexicana Schrad (EMC) diets for Wulong Goose. Thirty-two geese of 9 months old were selected and divided into four groups randomly, with eight geese in each group. Four groups were fed with the isocaloric and isonitrogenous diets of different EMC contents (12, 19, 25 and 31%), respectively. The results showed that, as dietary EMC increased, dry matter (DM) digestibility was decreased significantly, meanwhile the digestibility of crude fiber (CF), neutral detergent fiber (NDF) and acid detergent fiber (ADF) increased significantly (P<0.05). The ratio of apparent essential amino acid (EAA) digestibility (except Leu) among the four groups had significant difference (P<0.01). the content of NH3-N in feces dropped (P>0.05). There were no significant differences in net protein utilization (NPU), N apparent digestibility, N deposition and Ca apparent digestibility in different groups (P> 0.05). The apparent digestibility of P in different groups elevated, while there was significant difference between group D and A (P<0.01), and there was significant difference between group D and B (P<0.05).
文摘In order to examine the most appropriate collecting time, HPLC\|ELSD and colorimetric methods were respectively used to determine the content of momordin Ic and total saponins in \%Kochia scoparia \%(L.) Schrad. fruit at different collecting times. It was shown that the best collecting time was when fruit just matured.
文摘【目的】通过响应面法优化超声辅助纤维素酶提取扫帚菜多糖的工艺,评价多糖的抗氧化活性。【方法】在单因素试验的基础上,以多糖提取率为响应值,选择酶用量、超声温度、超声时间和液料比进行Box-Behnken试验设计,研究了各工艺条件及其交互作用对扫帚菜多糖提取率的影响,得到了二次多项式回归方程模型,并以猪油的抗氧化性能来评价多糖的抗氧化活性。【结果】扫帚菜多糖的最佳提取工艺条件为:酶用量2.1%、超声温度51℃、超声时间20 min、液料比25 m L/g,该条件下扫帚菜多糖的提取率为65.93 mg/g,与理论预测值的相对误差为0.21%。扫帚菜多糖对猪油有一定的抗氧化能力。【结论】利用响应面法优化超声辅助纤维素酶提取扫帚菜多糖的工艺有效、可靠,扫帚菜多糖能有效提高猪油产品的货架期。
