采用热水浸提法提取小刺猴头液体深层发酵浸膏多糖,在液料比、提取时间和提取温度单因素试验的基础上,利用SAS 9.2(the SAS System for Windows 9.2)软件设计响应面,以多糖得率作为响应值,优化得最佳提取条件:液料比(mL/g)2.29∶1,提取...采用热水浸提法提取小刺猴头液体深层发酵浸膏多糖,在液料比、提取时间和提取温度单因素试验的基础上,利用SAS 9.2(the SAS System for Windows 9.2)软件设计响应面,以多糖得率作为响应值,优化得最佳提取条件:液料比(mL/g)2.29∶1,提取时间4.52 h,提取温度79.5℃,2次平行多糖得率12.28%。通过乙醇分级、脱蛋白、透析、过凝胶柱分离多糖,采用醋酸纤维素薄膜电泳、柱层析、紫外光谱及反复冻融鉴定为均一多糖。展开更多
A water soluble polysaccharide (HPⅠ) was isolated from the Hericium caput-medusae and examined homogenously by Sephadex G-100 column chromatography,cellulose acetate film electrophoresis and specific optical rotation...A water soluble polysaccharide (HPⅠ) was isolated from the Hericium caput-medusae and examined homogenously by Sephadex G-100 column chromatography,cellulose acetate film electrophoresis and specific optical rotation measurement. This HPⅠconsists of Fuc,Glc and Gal in the molar ratios of 0.423∶1∶2.110. Its structural features were investigated by methylation and GC-MS analysis,periodate oxidation-Smith degradation,and partial acid-hydrolysis. In addition, enzymatic degradation experiments and GC analysis were applied. The following structure of the highly branched repeating unit was established: 6→)-Gal-(1→6)-Gal-(1→6)-Gal-(1→6)-Gal-(1→6)-Gal-(1→6)-Gal-(1→6)-Gal-(1→6)-Gal-(1→6)-Gal-(1→ 2 ↑ 1 2 ↑ 1 2 ↑ 1 Gal-(1→4)-Fuc Glc-(1→3)-Glc 2 Gal-(1→6)-Glc 3 The activities of HPⅠwere tested in mice. All the samples exhibited high effect of prevention and cure against chronic gastricism.展开更多
为研究小刺猴头菌[Hericium caput-medusae(Bull.:Fr.)Pers]发酵浸膏多糖的抗氧化活性。以工厂化小刺猴头菌发酵浸膏为原料,采用透析法分级,DEAE sepharose fast flow柱层析纯化,分别获得粗多糖组分HFCP1和中性多糖HFCP1-1;通过PMP柱前...为研究小刺猴头菌[Hericium caput-medusae(Bull.:Fr.)Pers]发酵浸膏多糖的抗氧化活性。以工厂化小刺猴头菌发酵浸膏为原料,采用透析法分级,DEAE sepharose fast flow柱层析纯化,分别获得粗多糖组分HFCP1和中性多糖HFCP1-1;通过PMP柱前衍生-高效液相色谱法和红外光谱法对单糖组成和结构进行分析,单糖组成均以葡萄糖和半乳糖为主。化学法检测多糖抗氧化活性,结果显示:HFCP1和HFCP1-1清除羟基自由基、超氧阴离子自由基、2,2′-联氮-二(3-乙基-苯并噻唑-6-磺酸)二铵盐(2,2′-azinobis-3-ethylbenzthiazoline-6-sulphonate,ABTS+)和1,1-二苯基-2-三硝基苯肼(1,1-diphenyl-2-picrylhydrazyl,DPPH)的IC50值分别为7.66和6.77mg/mL、6.16和5.30mg/mL、0.63和0.85mg/mL、0.39和2.62mg/mL。以RAW264.7细胞建立H2O2诱导损伤模型,细胞抗氧化结果表明:HFCP1和HFCP1-1处理组与模型组相比均显著增强细胞活力(P<0.05),浓度为100和200mg/L时MDA含量与模型组相比均显著下降(P<0.05);HFCP1浓度为100和200mg/L时与模型组相比显著增加SOD和GSH-Px的活性(P<0.05);HFCP1-1浓度为200mg/L时与模型组相比显著增加SOD活性(P<0.05);也能增加GSH-Px的活性,但未达到显著水平(P>0.05)。展开更多
为研究小刺猴头菌发酵浸膏多糖(Polysaccharides from the fermentation extract of Hericium caputmedusae,HFP)对肉鸡血清脂类指标、腹脂沉积、盲肠短链脂肪酸以及肝脏、肌肉、粪便中脂肪含量的影响,选用1日龄AA肉鸡240只,随机分为4...为研究小刺猴头菌发酵浸膏多糖(Polysaccharides from the fermentation extract of Hericium caputmedusae,HFP)对肉鸡血清脂类指标、腹脂沉积、盲肠短链脂肪酸以及肝脏、肌肉、粪便中脂肪含量的影响,选用1日龄AA肉鸡240只,随机分为4个处理,每处理3个重复,每重复20只,分别饲喂含HFP为0、0.1%、0.3%和0.5%的日粮,试验期为42d。结果表明:1)日粮中添加HFP可显著降低14、28和42日龄肉鸡血液甘油三酯(TG)含量(P<0.05),0.3%和0.5%水平的HFP添加组可显著降低肉鸡肝脏TG含量(P<0.05);2)0.3%和0.5%水平的HFP添加组肉鸡的腹脂率显著低于对照组(P<0.05);3)日粮中添加HFP对肉鸡体重、腿肌脂肪含量、胸肌脂肪含量、粪便脂肪含量无显著影响(P>0.05);4)添加HFP可显著增加肉鸡盲肠丙酸含量(P<0.05),显著降低盲肠乙酸和丙酸的比例(P<0.05);5)变量间相关性分析表明,14日龄时,肉鸡盲肠丙酸含量与腹脂率显著负相关(r=-0.992),乙酸和丙酸的比例与腹脂率显著正相关(r=0.989);28日龄时,盲肠丙酸含量与血液TG含量显著负相关(r=-0.985),乙酸和丙酸的比例与血液TG含量显著正相关(r=0.996);42日龄时,乙酸和丙酸的比例分别与血液TG含量、腹脂率显著正相关(r=0.951,0.979)。以上结果提示,在肉鸡日粮中添加HFP可以显著降低血液TG含量,降低腹脂沉积,可能是通过调节肉鸡盲肠短链脂肪酸的含量和比例而促进机体脂类代谢。展开更多
文摘采用热水浸提法提取小刺猴头液体深层发酵浸膏多糖,在液料比、提取时间和提取温度单因素试验的基础上,利用SAS 9.2(the SAS System for Windows 9.2)软件设计响应面,以多糖得率作为响应值,优化得最佳提取条件:液料比(mL/g)2.29∶1,提取时间4.52 h,提取温度79.5℃,2次平行多糖得率12.28%。通过乙醇分级、脱蛋白、透析、过凝胶柱分离多糖,采用醋酸纤维素薄膜电泳、柱层析、紫外光谱及反复冻融鉴定为均一多糖。
文摘A water soluble polysaccharide (HPⅠ) was isolated from the Hericium caput-medusae and examined homogenously by Sephadex G-100 column chromatography,cellulose acetate film electrophoresis and specific optical rotation measurement. This HPⅠconsists of Fuc,Glc and Gal in the molar ratios of 0.423∶1∶2.110. Its structural features were investigated by methylation and GC-MS analysis,periodate oxidation-Smith degradation,and partial acid-hydrolysis. In addition, enzymatic degradation experiments and GC analysis were applied. The following structure of the highly branched repeating unit was established: 6→)-Gal-(1→6)-Gal-(1→6)-Gal-(1→6)-Gal-(1→6)-Gal-(1→6)-Gal-(1→6)-Gal-(1→6)-Gal-(1→6)-Gal-(1→ 2 ↑ 1 2 ↑ 1 2 ↑ 1 Gal-(1→4)-Fuc Glc-(1→3)-Glc 2 Gal-(1→6)-Glc 3 The activities of HPⅠwere tested in mice. All the samples exhibited high effect of prevention and cure against chronic gastricism.
文摘为研究小刺猴头菌[Hericium caput-medusae(Bull.:Fr.)Pers]发酵浸膏多糖的抗氧化活性。以工厂化小刺猴头菌发酵浸膏为原料,采用透析法分级,DEAE sepharose fast flow柱层析纯化,分别获得粗多糖组分HFCP1和中性多糖HFCP1-1;通过PMP柱前衍生-高效液相色谱法和红外光谱法对单糖组成和结构进行分析,单糖组成均以葡萄糖和半乳糖为主。化学法检测多糖抗氧化活性,结果显示:HFCP1和HFCP1-1清除羟基自由基、超氧阴离子自由基、2,2′-联氮-二(3-乙基-苯并噻唑-6-磺酸)二铵盐(2,2′-azinobis-3-ethylbenzthiazoline-6-sulphonate,ABTS+)和1,1-二苯基-2-三硝基苯肼(1,1-diphenyl-2-picrylhydrazyl,DPPH)的IC50值分别为7.66和6.77mg/mL、6.16和5.30mg/mL、0.63和0.85mg/mL、0.39和2.62mg/mL。以RAW264.7细胞建立H2O2诱导损伤模型,细胞抗氧化结果表明:HFCP1和HFCP1-1处理组与模型组相比均显著增强细胞活力(P<0.05),浓度为100和200mg/L时MDA含量与模型组相比均显著下降(P<0.05);HFCP1浓度为100和200mg/L时与模型组相比显著增加SOD和GSH-Px的活性(P<0.05);HFCP1-1浓度为200mg/L时与模型组相比显著增加SOD活性(P<0.05);也能增加GSH-Px的活性,但未达到显著水平(P>0.05)。
文摘为研究小刺猴头菌发酵浸膏多糖(Polysaccharides from the fermentation extract of Hericium caputmedusae,HFP)对肉鸡血清脂类指标、腹脂沉积、盲肠短链脂肪酸以及肝脏、肌肉、粪便中脂肪含量的影响,选用1日龄AA肉鸡240只,随机分为4个处理,每处理3个重复,每重复20只,分别饲喂含HFP为0、0.1%、0.3%和0.5%的日粮,试验期为42d。结果表明:1)日粮中添加HFP可显著降低14、28和42日龄肉鸡血液甘油三酯(TG)含量(P<0.05),0.3%和0.5%水平的HFP添加组可显著降低肉鸡肝脏TG含量(P<0.05);2)0.3%和0.5%水平的HFP添加组肉鸡的腹脂率显著低于对照组(P<0.05);3)日粮中添加HFP对肉鸡体重、腿肌脂肪含量、胸肌脂肪含量、粪便脂肪含量无显著影响(P>0.05);4)添加HFP可显著增加肉鸡盲肠丙酸含量(P<0.05),显著降低盲肠乙酸和丙酸的比例(P<0.05);5)变量间相关性分析表明,14日龄时,肉鸡盲肠丙酸含量与腹脂率显著负相关(r=-0.992),乙酸和丙酸的比例与腹脂率显著正相关(r=0.989);28日龄时,盲肠丙酸含量与血液TG含量显著负相关(r=-0.985),乙酸和丙酸的比例与血液TG含量显著正相关(r=0.996);42日龄时,乙酸和丙酸的比例分别与血液TG含量、腹脂率显著正相关(r=0.951,0.979)。以上结果提示,在肉鸡日粮中添加HFP可以显著降低血液TG含量,降低腹脂沉积,可能是通过调节肉鸡盲肠短链脂肪酸的含量和比例而促进机体脂类代谢。