串叶松香草营养成分及其营养价值分析

串叶松香草犤SilphiumperfoliatumL.犦已经在我国各个省区广泛种植。营养价值非常高,其粗蛋白含量高,占干重的17.83%～23.6%,接近或超过多数豆科牧草。其蛋白质中含有人体所需全部必需氨基酸,尤其是限制性氨基酸赖氨酸含量特别高,占蛋白质含量的5.28%,可以弥补谷物类食品在赖氨酸方面的严重不足。干样分析串叶松香草的钙含量为2.5%～3.22%,磷含量为0.28%～0.6%,钾含量为2%～2.8%。胡萝卜素含量达到4.26mg/kg,维生素C含量达到52.3～52.8mg/kg,维生素E65mg/kg。串叶松香草的各种营养成分都具有重要的营养价值,加工产品适口性好,作为食品进行深入研究开发很有经济价值。     

串叶松香草种子产量构成因子分析

采用方差分析、相关分析、通径分析和逐步回归分析对串叶松香草种子产量构成因子进行了研究,结果表明:在串叶松香草株高、每株生殖枝数、每株花序数、每花序种子数、千粒重和单株种子产量这6个产量因子中,除株高和千粒重在不同生长年限之间不存在显著差异外,其它因子均存在显著差异;每株花序数和每花序种子数与单株种子产量间存在极显著相关,是串叶松香草种子产量的主要影响因子;串叶松香草单株种子产量的回归模型为:Y=-87.50047+0.14578X3+4.19497X4(F=23.51,Pr0.0001)。     

寿命长产量高的牧草——香槟草

<正>香槟草属菊科多年生草本植物,茎上对生叶片的基部相连呈杯状,茎从两叶中间贯穿而出,且鲜草有特异的松香味,花朵似菊花,故又名串叶草、串叶松香草、松香草、菊花草,适于我国南北方各地种植。辽宁省丹东市种畜场20多年的生产实践证明,香槟草寿命长、易管     

笃斯越橘果汁饮料的研制

以笃斯越橘(蓝莓)为原料,经破碎、榨汁、澄清、调配、精滤和杀菌等工艺制得笃斯越橘果汁饮料.饮料配方经正交试验结果表明,笃斯越橘果汁含量15%,糖度10%,总酸0.3%时产品风味良好.笃斯越橘原汁澄清处理采用明胶225 mg/和膨润土2 250 mg/L的澄清效果最为理想.     

铁皮石斛饮料杀菌工艺研制及品质分析

通过不同高温高压条件和添加抑菌剂筛选出6种铁皮石斛饮料杀菌方式，重点研究了M3(121℃15 min)、M5[0.2 g/kg乳酸链球菌素(Nisin)+100℃]和M7[100℃+0.25 g/kg二甲基二碳酸盐(DMDC)+0.2 g/kg Nisin] 3种杀菌方式的铁皮石斛饮料在贮藏期内菌落总数、多糖及总酚含量的变化和色泽稳定性，以筛选出较佳的杀菌方式。上述3种杀菌方式处理的铁皮石斛饮料在25℃、16周贮藏期内菌落总数均符合《食品安全国家标准饮料》(GB 7101—2022)，多糖含量明显下降，总酚含量变化平稳，样品的L值、a绝对值和b值减小，饮料贮藏时间的色泽变化稳定性好，品质保持良好。M3和M5处理的pH、色泽变化趋势均较M7处理稳定，为较好的杀菌方式。     

笃斯越橘果汁饮料的研制

以笃斯越橘（蓝莓）为原料,经破碎、榨汁、澄清、调配、精滤和杀菌等工艺制得笃斯越橘果汁饮料.饮料配方经正交试验结果表明,笃斯越橘果汁含量15%,糖度10%,总酸0.3%时产品风味良好.笃斯越橘原汁澄清处理采用明胶225 mg/和膨润土2 250 mg/L的澄清效果最为理想.     

山苦茶饮料澄清技术的研究

采用不同方法对山苦茶饮料进行澄清化处理。试验结果表明,采用β-环糊精添加量0.7%,木瓜蛋白酶添加量0.3 g/kg,果胶酶添加量0.075 g/kg进行澄清处理,山苦茶的透光率可达95%。将其冷藏于4℃下3个月,未见沉淀产生。     

核桃饮料加工工艺优化

以广西本地核桃为材料,采用单因素和正交试验对核桃饮料去皮、打浆、调配及稳定性等加工工艺条件进行研究。结果表明,最佳去皮工艺条件为:NaOH浓度0.4%,热烫温度90℃,热烫时间3 min;最优打浆方案为:料液比1∶20(g/g),打浆温度80℃,打浆时间6 min;最佳调配配方为:5%白砂糖+0.2%植脂末;最佳复合稳定剂添加量为:0.06%复配增稠剂(果胶∶CMC-Na∶黄原胶=4∶1∶0.8)+0.10%复配乳化剂(蔗糖脂肪酸酯∶单甘酯=3∶1)+0.15%微晶纤维素。在该工艺条件下生产的核桃饮料为乳白色,核桃风味浓郁,口感爽滑,稳定性良好。     

薏苡仁枸杞饮料加工工艺对稳定性的影响研究

为了提高薏苡仁和枸杞饮料的稳定性,改进其加工工艺与配方,经单因素试验和正交试验,优选出饮料的配方和制备方法。结果表明,采用下列的配方与工艺组合:不过筛的薏苡仁粉用量为2.8%,蔗糖用量为7%,枸杞预煮时间(杀菌时间和预煮时间)为40 min,不添加稳定剂,调配温度为100℃可得到风味优良和稳定性较好的饮料。     

温度及赤霉素处理对兰香草种子萌发特性的影响

兰香草(Caryopteris incana (Thunb.) Miq.)作为莸属的广布种,是优良的观赏、蜜源和药用植物。本研究在对兰香草种子的长、宽、千粒重及吸水性能测定的基础上,探索不同温度和不同浓度赤霉素处理对种子萌发的影响。结果表明:兰香草种子的平均长度、宽度分别为2.43 mm和1.94 mm,千粒重为0.57 g;兰香草种子在吸水4 h后达到饱和;兰香草种子在15℃～30℃均可萌发,在35℃以上基本不萌发,20℃～25℃最适宜种子萌发;赤霉素处理可显著提高兰香草的萌发率,尤其是在低温(15℃)和高温(35℃)的条件下,可用100～200 mg/L的赤霉素处理提高种子萌发率,缩短种子的萌发周期。本研究为兰香草的播种繁殖提供重要的理论支撑,也为以后兰香草推广种植和品种改良培育等方面提供理论基础。     

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.