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邻菲咯啉是一种二肽酶抑制剂。本试验用体外法测定了不同浓度邻菲咯啉对瘤胃微生物发酵产气量、氨氮浓度、真蛋白含量及饲料干物质降解率的影响。结果表明 ,邻菲咯啉浓度与产气量呈直线负相关(Y=-16.75X +29.52 ,r=0.7976,P<0.05);与发酵液氨氮浓度呈直线负相关(Y= -0.5757X +3.3036,r=0.8384,P<0.05) ;与发酵管内容物真蛋白含量呈直线正相关(Y=1.35X +11.45,r=0.8423,P<0.05) ;与内容物饲料干物质降解率呈直线负相关(Y= -10.14X +55.08,r=0.9275,P<0.01)。 相似文献
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Several methods for determination of extractable iron (Fe; or so-called “active Fe”) have been proposed. In this study, three methods of Fe extraction were tested: 1.5% phenanthroline (pH 3) and 1 M hydrochloric acid (HCl) from fresh leaves, and 1 M HCl from oven-dry leaves. A six-year-old avocado orchard (cultivar ‘Hass’), grown on a calcareous soil in the proximity of Cabildo (Valparaíso region, Chile), was selected for the study. Samples of mature (5–7 moths-old) leaves of different degree of chlorosis were collected. Total Fe concentrations in chlorotic leaves were similar or even greater than in green leaves. Regressions between the extractable Fe concentrations and the leaf SPAD-color were statistically significant for phenanthroline method, while non-significant for HCl methods. Thus, phenanthroline method was superior over others for diagnosis of Fe deficiency in avocado. Phenanthroline-extractable Fe concentration of 6 mg kg?1 was considered as a critical value for mature avocado leaves. 相似文献
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以稀土氧化物、对羟基苯甲酸、5-磺基水杨酸、8-羟基喹啉、邻菲咯啉为原料,在乙醇水溶液中反应制备了4种新型稀土三元配合物Ce（H2SSA）hq2、La（p-OBA）hq2、La（p-OBA）3phen、Ce（p-OBA）3phen.对其进行元素分析和红外光谱测试,并对其抑菌效果进行研究,结果表明,4种配合物对大肠杆菌和白色假丝酵母的抑菌效果均优于原料试剂. 相似文献
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