Xylose crystal was obtained from cottonseed hull by the ethanol solventing-out crystallization process.The crystal was analyzed and determined by infrared spectrometer (IR),melting point tester,environmental scanning ...Xylose crystal was obtained from cottonseed hull by the ethanol solventing-out crystallization process.The crystal was analyzed and determined by infrared spectrometer (IR),melting point tester,environmental scanning electron microscope (ESEM),high performance liquid chromatography (HPLC),and particle analyzer.The results showed that this xylose crystal is similar to that came from corncob in the IR spectroscopy and melting point,but their shape is different,the former likes long prism and the later is square.Under the optimized operation conditions,the purity of the crystal could be up to 99.64%(mass),and the yield 77.6%.The particle size at mediam is 151 μm with the variation 47%.These data indicate that ethanol solventing-out crystallization can be an industrial potential method for production of xylose.展开更多
以草炭∶蛭石2∶1为基础基质和对照,设计了1.5、1、0.5、0体积的基础基质分别与0.5、1、1.5、2体积的棉籽壳菇渣复配4种基质处理,分别编号为T1、T2、T3、T4,对各复配基质基本理化性质进行了分析,并研究了对黄瓜幼苗生长发育和幼苗质量...以草炭∶蛭石2∶1为基础基质和对照,设计了1.5、1、0.5、0体积的基础基质分别与0.5、1、1.5、2体积的棉籽壳菇渣复配4种基质处理,分别编号为T1、T2、T3、T4,对各复配基质基本理化性质进行了分析,并研究了对黄瓜幼苗生长发育和幼苗质量的影响。结果表明,各菇渣复配基质的容重随菇渣含量增加呈递减趋势,其中T1、T2、T3大于对照。总孔隙度、通气孔隙度、持水孔隙度均随着菇渣含量增加而降低,其中,4个处理的总孔隙度、通气孔隙度均小于对照,T1、T2、T3持水孔隙度高于对照,4个处理的气水比在1∶3.75~1∶4.47之间。pH值、EC值和碱解氮、有效磷、速效钾含量均随着菇渣比例增加而明显升高,pH值在5.02~7.41之间,EC值在2.81~5.21 m S·cm^(-1)之间,营养丰富。不同菇渣基质配方培育的黄瓜幼苗茎粗度由粗到细表现为T1>T2>T3>CK>T4,植株高度由高到低表现为T1>T2>CK>T3>T4,T4出现生长受抑制的趋势。生物量和壮苗指数由大到小均为T1>T2>T3>T4>CK。说明T1、T2配方可以替代草炭-蛭石配方用于黄瓜育苗。展开更多
文摘Xylose crystal was obtained from cottonseed hull by the ethanol solventing-out crystallization process.The crystal was analyzed and determined by infrared spectrometer (IR),melting point tester,environmental scanning electron microscope (ESEM),high performance liquid chromatography (HPLC),and particle analyzer.The results showed that this xylose crystal is similar to that came from corncob in the IR spectroscopy and melting point,but their shape is different,the former likes long prism and the later is square.Under the optimized operation conditions,the purity of the crystal could be up to 99.64%(mass),and the yield 77.6%.The particle size at mediam is 151 μm with the variation 47%.These data indicate that ethanol solventing-out crystallization can be an industrial potential method for production of xylose.
文摘以草炭∶蛭石2∶1为基础基质和对照,设计了1.5、1、0.5、0体积的基础基质分别与0.5、1、1.5、2体积的棉籽壳菇渣复配4种基质处理,分别编号为T1、T2、T3、T4,对各复配基质基本理化性质进行了分析,并研究了对黄瓜幼苗生长发育和幼苗质量的影响。结果表明,各菇渣复配基质的容重随菇渣含量增加呈递减趋势,其中T1、T2、T3大于对照。总孔隙度、通气孔隙度、持水孔隙度均随着菇渣含量增加而降低,其中,4个处理的总孔隙度、通气孔隙度均小于对照,T1、T2、T3持水孔隙度高于对照,4个处理的气水比在1∶3.75~1∶4.47之间。pH值、EC值和碱解氮、有效磷、速效钾含量均随着菇渣比例增加而明显升高,pH值在5.02~7.41之间,EC值在2.81~5.21 m S·cm^(-1)之间,营养丰富。不同菇渣基质配方培育的黄瓜幼苗茎粗度由粗到细表现为T1>T2>T3>CK>T4,植株高度由高到低表现为T1>T2>CK>T3>T4,T4出现生长受抑制的趋势。生物量和壮苗指数由大到小均为T1>T2>T3>T4>CK。说明T1、T2配方可以替代草炭-蛭石配方用于黄瓜育苗。
