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芦竹磺化化机浆工艺条件 总被引:1,自引:0,他引:1
芦竹是芦苇与竹子杂交生成,形似竹,系多年生粗壮草本植物。其繁,对土壤要求不严格。主、湖泊附近,尤其我,可以大面积我们在实验室中对芦竹AP-浆和KP浆进行了大量的研究,:芦竹用于化学制浆时蒸,浆得率低,用碱量高。在用20%,蒸煮温度160℃下,蒸2.5h,KMnO4值仍高于18,,这也是芦竹迄今没能大。为了充,我们对芦竹制浆工艺进行了研究,以使芦竹,取自东营油田盐碱地,,敲碎,切成长20~,风干,备用。芦竹的主要化:苯醇抽出物:11.36%热水抽出物:16.38%Klason木素:18.89%1%NaOH抽出物:38.47%综纤维素:52.50%灰分:4.13%表… 相似文献
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《造纸信息》2004,(5):40-41
原料与备料杨木特性及其制浆工艺探讨蒋忠道等湖北造纸2003,1:8废纸利用及废纸处理王鸿文湖北造纸2003,1:37几种亚热带速生乡土阔叶树种的制浆特性评价周志春等中国造纸2003,2:8制浆速生材鄂育375、芦苇、意杨木蒸煮漂白对比实验报告应润芬等湖北造纸2003,1:4配用阔叶材改善针叶材CTMP特性蒋忠道等湖北造纸2003,1:20微生物和酶在制浆造纸工业中的应用劳嘉葆农垦造纸2003,1:21麦草碱法蒸煮使用液体绿氧的试验效果董晖等造纸化学品2003,1:39用于新闻纸的蓝桉CTMP关颖等中国造纸2003,2:3芦竹、芦苇烧碱法混合制浆马厚悦等中国造纸2003,2:13… 相似文献
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为了解决连续蒸煮系统原料单一问题,重点对麦草、芦苇5:5混合蒸煮制浆工艺进行实验。通过对生产过程控制数据检测和蒸煮工艺技术参数的合理调整确定,使得草、苇混合蒸煮制浆的各项实际检测数据符合拟定的工艺技术要求,且浆料的滤水性能得到改善,在后续草、苇混合蒸煮过程中,均无异常波动,漂白浆各项工艺标准符合下道工序的要求。 相似文献
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本文对芦苇碱性亚硫酸钠添加蒽醌衍生物制浆工艺采用四因子三水平正交设计实验.同时采用相同条件对芦苇碱性亚硫酸钠添加蒽醌做了对比实验.对蒽醌衍生物在蒸煮过程中做为一种化学助剂进行了可行性研究. 相似文献
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继蒸煮助剂蒽醌(AQ)和改性蒽醌衍生物(MAQ)及CT1等应用于碱法蒸煮以来,90年代又出现了一种新的蒸煮助剂———绿氧,本文在实验室条件下,对芦苇进行了绿氧—烧碱法制浆工艺的应用试验。2.1芦苇L9(34)绿氧烧碱法正交试验结果原料取自沅江造纸厂... 相似文献
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不同蒸煮方式对藜麦营养特性及风味的影响 总被引:2,自引:0,他引:2
研究常压蒸煮、高压蒸煮、微波蒸煮三种不同蒸煮方式对藜麦的营养特性(VB1、VB2的损失;酚类物质含量和组成;淀粉水解率)的影响,并采用固相微萃取联用气相色谱-质谱技术对样品的风味物质进行分析。结果表明:与其他两种蒸煮方式相比,常压蒸煮藜麦可保留较多的VB1、VB2,有较低的淀粉水解指数,可产生更多的风味物质。但在酚类物质的保留上,常压蒸煮不及高压蒸煮。因此,常压蒸煮可能是一种较适于藜麦的烹调方式。 相似文献
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提出一种研究蒸煮反应动力学的实验和计算新方法。通过对不同恒温条件下的反应速率常数计算,采用与实际蒸煮反应相同的液比,用较短的时间周期的有效碱浓度变化值和木素含量变化值计算得出了硫酸盐法和烧碱蒽醌法棉秆蒸煮反应的活化能。棉秆硫酸盐法蒸煮反应的活化能和棉秆烧碱蒽醌法蒸煮反应的活化能在整个脱木素阶段基本是一致的。硫酸盐法蒸煮反应的活化能为95.0kJ/mol。烧碱蒽醌法蒸煮反应的活化能是138.1kJ/mol,高于硫酸盐法蒸煮反应活化能,说明硫酸盐法蒸煮脱木素反应比烧碱蒽醌更容易。 相似文献
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Kinetics of cooking of green peas, carrot, radish and knolkol were determined from the compression force ratio of the vegetables before and after cooking. The kinetics of rice and potato cooking, both starchy products were found to be suitable in explaining the kinetics of cooking of vegetables. The degree of cooking was correlated to cooking time and the reaction rate constant, K, value was determined for four vegetables. With this K value the degree of cooking at various other cooking times was predicted. The R2 value and standard error of estimate were determined. 相似文献
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Changes in the amounts of water-soluble umami-related substances in porcine longissimus and biceps femoris muscles during moist heat cooking 总被引:1,自引:0,他引:1
Time course changes in amounts of glutamic acid, total free amino acid, inosine monophosphate (IMP), and 2%-trichloroacetic acid-soluble oligopeptides in whole, muscle only, and cooking juice during wet-heat cooking in pork longissimus and biceps femoris muscles were investigated because the movements of umami-relevant substances during cooking treatment had not previously been clarified in detail. The amounts of glutamic acid, total free amino acid, and IMP significantly (P<.05) decreased and increased in muscle and cooking juice during 180min of cooking, respectively. The whole amounts of glutamic acid and total free amino acid remained unchanged during cooking treatment. The whole amount of IMP, however, increased significantly at 10min of cooking (P<.05) and was maintained after the 10-min period. The extramuscular oligopeptides amount increased significantly in response to the cooking treatment (P<.05). The intramuscular amount of oligopeptides decreased at 30min of cooking but increased significantly (P<.05) after 60min. The whole meat oligopeptides amount increased significantly during a 180-min cooking treatment (P<.05). These results indicate that glutamate, total free amino acid, and IMP were released from the muscle during cooking, and that IMP levels increased in the initial phase of cooking. In addition, oligopeptides increased during wet-heat cooking of pork muscles. 相似文献
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The effect of cooking water on textural and cooking properties of spaghetti was examined using four different salt concentrations 0, 1, 2, 3 and 4% in the cooking water and two types of spaghetti. Brand A was normal durum wheat spaghetti and brand B was spaghetti enriched with bran. Regardless of the cooking water used, brand B was harder, less sticky than brand A and it absorbed less water. Brand A required less cooking time. As salt concentration increased cooking time and hardness scores increased. Adhesiveness values were highest at the early stages of cooking and declined as cooking time increased. 相似文献
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目的:比较3种烹饪方式对8种蔬菜中维生素C含量的影响。方法:选取8种常见蔬菜,分别采用较新型烹饪方式(不锈钢炒锅加盖密闭式)、模拟传统烹饪方式(不锈钢炒锅不加盖)与传统烹饪方式(铁锅急火快炒不加盖)进行烹调,不添加食盐仅添加烹调油,严格控制其它烹饪条件。采用GB/T 5009.86—2003 2,4—二硝基苯肼法测定烹饪前后8种蔬菜中维生素C含量的变化。结果:相同条件下,采用3种不同烹饪方式对同种蔬菜进行烹调的结果显示,不同烹调方式都会造成蔬菜中维生素C损失,且维生素C含量与烹饪前相比,差异具有统计学意义(P<0.05)。新型烹饪方式与传统烹饪方式相比,蔬菜中维生素C含量较高,且据有显著性差异(P<0.05),新型烹饪方式组蔬菜中维生素C保存率最高(8种蔬菜分别为58.52%、73.21%、85.14%、68.66%、87.17%、82.78%、44.54%、74.91%);传统烹饪方式组蔬菜中维生素C保存率最低(对应上述8种蔬菜分别为29.26%、61.91%、52.58%、38.53%、43.58%、59.60%、24.66%、40.62%)。结论:不同烹饪方式对蔬菜中维生素C损失影响不同,新型烹饪方式对蔬菜中维生素C损失最小,保存率最高。 相似文献
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以肉糜为材料,研究腌制、常压蒸煮、高压蒸煮单元加工条件及NaNO2 添加量对肉糜中NaNO2 残留量的影响。考察建立NaNO2 添加量、腌制时间、煮制时间、蒸煮温度对NaNO2 残留量影响的预测模型,并对模型进行验证。结果表明:腌制阶段NaNO2 残留量与NaNO2 添加量呈显著正相关,与腌制时间呈显著负相关;蒸煮阶段NaNO2 残留量与NaNO2 添加量呈显著正相关,与蒸煮温度与时间呈负相关;动力学模型分析表明,高压蒸煮对NaNO2 残留量下降速率的影响比常压蒸煮大,不同温度对NaNO2 残留量的影响极其显著(P < 0.01);80℃与121℃条件下建立的预测模型R2 分别为0.939、0.888。预测模型试验值与回归值符合得比较好,相对误差小于10%。 相似文献