碱法提取榆黄蘑可溶性膳食纤维的研究

以榆黄蘑为原料,采用碱法提取榆黄蘑中可溶性膳食纤维,研究碱液质量浓度、料液比、提取时间和提取温度对可溶性膳食纤维得率的影响,通过正交试验优化出的最佳提取工艺条件为碱液质量浓度2 g/100 mL,料液比1∶25,提取时间80 min,提取温度70℃。在此条件下,榆黄蘑可溶性膳食纤维得率达到15.03%。     

菠萝皮渣可溶性膳食纤维的提取及物化特性研究

以干菠萝皮渣为原料,运用纤维素酶解法提取菠萝皮渣中的可溶性膳食纤维,通过单因素试验和正交试验,确定最优的提取工艺为纤维素酶添加量0.9%,料液比1∶35(g∶m L),酶解液pH值6.0,酶解时间75 min。在此工艺条件下,菠萝皮渣中可溶性膳食纤维的提取率可达10.03%,样品的持水力、持油力和溶胀性分别为8.698 g/g,5.07 g/g,12.02 m L/g,同时对胆固醇也具有一定的吸附能力。     

碱法提取凉茶残渣中水不溶性膳食纤维的工艺研究

以凉茶残渣淡竹叶和金钱草为原料,在单因素试验的基础上,通过正交试验优化淡竹叶和金钱草中水不溶性膳食纤维(IDF)的提取工艺条件,并对提取的IDF进行相关指标测定。结果表明,淡竹叶中水不溶性膳食纤维的最佳提取工艺条件为:料液比1∶10(g/m L),碱液浓度5 mg/m L,水解时间2.0 h,浸提温度70℃。在该工艺条件下,淡竹叶IDF的提取率为63.75%±0.94%,持水力为(4.00±0.22)g/g,膨胀力为(7.87±0.33)m L/g,高于标准麸皮的相关功能性指标。金钱草中水不溶性膳食纤维的最佳提取工艺条件为:料液比1∶20(g/m L),碱液浓度5 mg/m L,水解时间1.5 h,浸提温度50℃。在该工艺条件下,金钱草膳食纤维的提取率为60.16%±0.39%,持水力(3.67±0.17)g/g,膨胀力为(8.67±0.37)m L/g。虽然金钱草水不溶性膳食纤维的持水力略低于标准麸皮,但溶胀性高于标准麸皮。总体而言,碱法提取水不溶性膳食纤维的工艺稳定性高,可节约能源,适于工业应用,为进一步开发高附加值产品奠定了一定的基础。     

超声波辅助碱法提取蕨菜中水溶性膳食纤维

采用超声波辅助碱法提取蕨菜中的水溶性膳食纤维(SDF),通过单因素试验探讨料液比、超声功率、碱液质量浓度、提取温度4个因素对SDF得率的影响,再通过正交试验对提取工艺条件进行优化。结果表明,超声波辅助碱法提取蕨菜中的SDF最佳工艺条件为氢氧化钠质量浓度0.06 g/mL,超声功率120 W,料液比1∶30(g∶mL),提取温度65℃,实际测得SDF得率为36.01%。     

红枣可溶性膳食纤维饮料的研制

以红枣为原料,经过水提醇沉工艺得到红枣可溶性膳食纤维,同时运用单因素统计方法优化提取工艺;运用正交统计方法优化提取工艺制备红枣可溶性膳食纤维饮料。最佳提取工艺条件确定为料液比1∶3,提取时间30 min,提取温度60℃,可溶性膳食纤维得率60%。优化得出工艺参数为可溶性膳食纤维含量6 g/100 m L,蔗糖含量3 g/100 m L,柠檬酸添加量1.5%,黄原胶添加量0.06%。     

葵花子皮中水溶性膳食纤维初步研究

为了提高葵花子皮中水溶性膳食纤维得率,在单因素实验基础上,通过响应面法对水溶性膳食纤维提取工艺进行优化研究。结果表明：提取瓜子皮中水溶性膳食纤维的最佳工艺参数为NaOH的质量分数为7.83%、提取时间为69.46 min、提取温度为42.10℃、液料比为40 mL/g;在最优工艺条件下水溶性膳食纤维的得率可达31.1112%,同时经测定得知葵花子皮膳食纤维具有良好的持水性和溶胀性：持水性为7.293 g/g,溶胀性为3.997 mL/g。因此瓜子皮可以作为提取水溶性膳食纤维的良好来源。     

A precise finite element modeling approach for analyzing linear rolling guideway dynamics

以燕麦加工产品的剩余滤渣为原料,研究酶-碱结合法制备燕麦麸膳食纤维的提取工艺。在单因素试验的基础上,通过正交试验,确定提取燕麦麸膳食纤维的最佳工艺条件为:料水比1∶10,α-淀粉酶添加量1.5%,溶液pH 6.5,65℃条件下酶解30 min,酶解液加3%浓度为1 mol/L的NaOH溶液,60℃条件下碱解40 min。制得的燕麦麸膳食纤维的提取率可达56.43%,持水力为3.414 9 g/g,溶胀性为3.13 mL/g。     

苜蓿弃用粗茎水溶性膳食纤维的提取

苜蓿营养丰富,富含叶蛋白、叶黄素及膳食纤维。以"肇东"紫花苜蓿弃用粗茎为原料,采用酸热法提取苜蓿水溶性膳食纤维。研究水浴时间、水浴温度、酸液浓度和酸液用量对苜蓿水溶性膳食纤维得率的影响。利用正交设计试验,确定了最佳提取工艺,其最佳工艺参数为:加热时间100 min,加热温度80℃,酸液体积分数3%,酸液用量60 mL。在该最佳条件下,苜蓿水溶性膳食纤维的得率为6.46%。     

豆渣中水溶性膳食纤维的提取

采用化学方法从大豆豆渣中提取水溶性膳食纤维,研究了碳酸钠溶液浓度、提取时间、提取温度和提取液用量4个因素,以及不同沉淀剂对水溶性膳食纤维提取量的影响,并确立了制备水溶性膳食纤维的最佳工艺条件为碳酸钠质量分数3%,浸提温度80℃,提取液用量25 m L/g,提取时间60 min。     

苦荞麦壳不溶性膳食纤维的理化性能及其结合酚提取工艺优化

分别采用酸法、碱法、酶法对苦荞麦壳不溶性膳食纤维（F-IDF）进行提取,并评价了其理化性质,在单因素试验基础上,采用响应面法优化了苦荞麦壳不溶性膳食纤维结合酚（F-DFPP）的提取工艺。结果表明：采用α-淀粉酶-木瓜蛋白酶复合酶法提取F-IDF,得率可达59.45%±0.87%;采用不同方法获得的F-IDF理化性质差异显著,酶法和酸法提取的F-IDF具有较高的持油性;碱法提取的F-IDF持水性和膨胀性最佳;提取F-DFPP的最佳工艺参数为料液比1∶20（g/mL）,纤维素酶添加量8%,超声功率180 W,提取时间2 h,按此工艺提取的结合酚含量为（7.45±0.05）mg/g;纤维素酶可使膳食纤维结构变得疏松多孔,从而利于结合酚的提取和制备。本研究为苦荞麦壳的综合利用提供了数据支持。     

冷冻干燥速溶蛋花汤的加工技术

介绍了运用冷冻干燥技术进行速溶蛋花汤的加工,研究了生产工艺、特点以及影响产品质量的主要因素。试验表明,采用冷冻干燥技术加工的速溶蛋花汤,具有营养丰富、风味独特、方便快捷等特点。     

Measuring of Quantity of Matter-mass and the Measuring of Inertia of Matter-momentclm

A new definition of inertia,i.e. the momentum is the measuring of inertia of matter, is proposed. The article through and etc., subjects, the correctness of the new notion of inertia:The monentum is the measuring of inertia has been demonstrated, and the unsolved contradictions of the traditional definition of inetia. And the mass is the measuring of inertia has been revealed.     

香蕉遗传转化方法研究进展

香蕉是热带亚热带发展中国家重要的粮食作物和碳水化合物来源。但近年来,香蕉生产受到严重的病虫危害。大多数香蕉栽培品种是三倍体,生长周期长,而且不孕。由于没有种子,给繁殖和育种带来一定的困难。遗传转化技术的发展为香蕉品种的改良提供了一种有效的手段。香蕉的遗传转化方法有电激法、基因枪法、农杆菌介导法等。农杆菌介导法的应用是香蕉品种改良的一个重大突破。香蕉遗传转化的外植体也发展到多种,有原生质体,胚性细胞悬浮系,分生组织,以及横切薄片等。近几年,随着分子生物学的发展,出现了转化效率更高,重复性更好的香蕉遗传转化技术。如农杆菌和基因枪结合法,离心辅助农杆菌介导法、真空渗透技术等。这些新技术新方法的出现,必将推动香蕉产业高速发展。     

壳聚糖对石榴果汁澄清效果的影响

利用壳聚糖的絮凝作用对壳聚糖在甜石榴汁澄清中的应用效果进行了研究,试验结果表明,壳聚糖用量为0.3g/L、澄清时间为60min、温度为35℃时,甜石榴汁透光率可达85%以上,且通过对壳聚糖处理前后可溶性固形物、总酸、VC等营养成分含量的比较,确定以上工艺参数为甜石榴汁澄清的最佳选择。     

新疆布尔津县土地利用格局特征研究

基于RS与GIS技术,利用景观生态学理论及景观格局指数对布尔津县土地利用现状进行定量分析。结果显示为：（1）布尔津县以草地、林地为主要景观类型,镶嵌着耕地、水域等景观类型。（2）四个分区（即高山区、丘陵区、平原区、荒漠区）的林地资源组成差异明显,耕地、居民、交通及工矿用地集中分布在丘陵区和平原区（3）从各项指数来看,高山区的多样性指数较低;平原区是受人文因素最多的区域,景观优势度低,各种土地利用类型比例差异不大,有利于生态可持续发展,但要合理的开发利用;荒漠区生态环境相对脆弱,要加强生态环境的保护与改善。通过该研究对布尔津县的土地利用现状作一个了解,为该县乃至整个地区的景观规划和可持续发展战略提供科学依据。     

酸枣幼根原生质体的制备

以生长6～9 d的酸枣种子幼根为试验材料,0.7 mol·L-1甘露醇作为渗透压稳定剂、pH值5.5～6.0、28℃恒温水浴条件下,以光学显微镜观察的水解总时间、初始产生原生质体的时间、原生质体产量及细胞碎片量为指标,研究通过酶水解来制备酸枣幼根原生质体的方法.结果表明,在含1％果胶酶+4％纤维素酶R-10+3％纤维素...     

影响核桃贮藏品质因素的分析

介绍了几种核桃贮藏方法,综述了影响核桃贮藏品质的几个主要因素,以及针对上述影响因素提出若干解决对策.     

The Simulation of Comfort of Nine DOF of Automobile

Automobile comfort dynamic simulation is necessary when we predict and evaluate the comfort of a automobile or optimize performance of automobile. The nine DOF vibration model of automobile is established , which acts root mean square value of body in multiple work conditions as comfort evaluation indices. Based on the comfort simulation, the Hongyan 1160 is predicted in the way of comfort. The programmes can be used in many different automobiles . The computational result indicates that the model can simulate vibration of automobile truly. It is significant to research automobile comfort evaluation to optimize performance of automobile and comfort simulation .The computational program can be applied to optimize or simulate which has some reference value.     

Efficiency of water use of early plantings of sunflower

Rain fed crop production in Mediterranean environments depends to a large extent on strategies that avoid the intense summer drought. Early plantings of sunflower have given consistently higher yields in such environments, but the basis for such yield increases has not been explored. We conducted two field experiments at Cordoba (Spain) to investigate the effects of an early and a late planting date on the components of water-limited crop productivity; namely, water use (T), water use efficiency (TE) and harvest index (HI) of sunflower. The results were generalized by simulating rain fed sunflower yields, under early (1 January) and late (15 March) plantings, for a 25-year period with the aid of a simulation model of the Ceres type (OILCROP-SUN) which has been validated in Cordoba. Experimental seed yields of early plantings in 1989 and 1996 were 2.0 and 3.0 t ha⁻¹, while late plantings yields were 1.3 and 2.4 t ha⁻¹, for the 2 years. Average simulated yields were 2.7 ± 1.1 and 1.9 ± 0.7 t ha⁻¹ for early and late plantings, respectively. For the 2 years, T of early plantings was higher than that of late plantings, but the response of TE and HI to planting date was not the same in the two experiments. In the simulation exercise, T and TE of early plantings were consistently higher than those of late plantings, while there were no differences in the HI for the two planting dates. We conclude that early plantings of sunflower increase rain fed yields by increasing both T and TE, while the impact of planting date on HI very much depends on the crop water stress pattern, which is quite variable from year to year even in the predictable Mediterranean environment.     

Establishment of High-frequency Regeneration System of Explants of Alfalfa

The cotyledon and hypocotyl of eight varieties of alfalfa( Medicago sativa L. )are used to study the effect of different cultivation procedures and genotypes on embryogenic callus and embryoid induction,plant development and transplant of alfalfa.The varieties of alfalfa with high embryoid induction rate and high differentiation rate are screened. A high frequency regeneration system for alfalfa tissue culture is established:which is benifical to the gene transformation of alfalfa.