共查询到20条相似文献，搜索用时 31 毫秒
2.
山药蛋糕预混粉是指按配方将烘焙所用的部分原辅料预先混合好的复配半成品,蛋糕制作时只需要加水,简化了蛋糕制作工艺。通过对蛋清粉、粉末油脂、山药粉、单甘脂四因素的正交试验研究,以蛋糕制品的感官评值进行正交分析,得出山药蛋糕预混粉的最佳配方为：蛋清粉18%、山药粉8%、单甘酯0.4%、绵白糖20%、食盐0.5%、塔塔粉0.2%、泡打粉0.3%、面粉45%、粉末油脂4%、脱脂奶粉3.5%、香精0.1%。 相似文献
3.
目的:研究不同浓度的硼酸对根用芥菜种子萌发的影响。方法:以临泉花叶根用芥菜种子为材料,以不同浓度(0、10、20、100、1000、5000μmol/L)硼酸对根用芥菜种子进行浸种处理,调查了种子发芽指标,测定了萌发种子中脱氢酶和酸性磷酸酶活性以及幼苗总抗氧化能力、脯氨酸(Pro.)和丙二醛(MNDA)的含量。结果:随着硼酸浓度的升高,根用芥菜种子的发芽势、发芽率、脱氢酶活性、酸性磷酸酶活性、幼苗总抗氧化能力和Pro.含量均呈先升后降趋势,MDA含量呈先降后升趋势;当硼酸浓度为100μmol/L时,种子的发芽势、发芽率、脱氢酶活性、幼苗总抗氧化能力和Pro含量均达到最大值,MDA含量达最低值,均与其它处理差异显著;当硼酸浓度为10μmol/L时酸性磷酸酶活性达到最大值,硼酸浓度在10~1000μmol/L范围内酸性磷酸酶活性差异不显著,随后下降,但仍高于CK。结论:根用芥菜种子用100μmol/L浓度的硼酸浸种最为适宜。 相似文献
4.
丙烯基芥末油生产工艺研究 总被引：1，自引：0，他引：1
本文介绍了从十字花科植物芥菜种籽中提取丙烯基芥末油的方法并对其生产工艺进行了新的研究。经过多次实验验证了文献记载的工艺“水解——蒸馏法”在常温常压下出油率低,进而根据影响反应的关键探索出了可行性提油生产工艺“水解——油萃法”。 相似文献
5.
HASEEB Akhtar SHARMA Anita SHUKEA Prabhat Kumar 《Journal of Zhejiang University. Science. B》2005,6(8):736-742
INTRODUCTION Green gram (Vigna radiata) is an important short duration pulse crop. Due to its high nutritive value, it is grown throughout the tropical countries of South and Southeast Asia, particularly in India (Vavilov, 1951). Among various pests and diseases, nematodes-fungus disease complex particularly of Meloidogyne incognita and Fusarium oxysporum poses a great problem to the cultivation of pulse crops by inflicting severe yield losses (Perveen et al., 1999; De et al., 2000; … 相似文献
6.
目的:研究南方根结线虫对薄皮甜瓜幼苗生长、发病指数的影响,对6种不同品种薄皮甜瓜的综合抗性作出评价。方法:采用6个不同品种的薄皮甜瓜为实验材料,采取盆栽人工接种方式,通过对甜瓜幼苗的植株鲜重、根瘤数、根结指数、卵粒指数、病情指数、根系电导率、根系MDA含量进行测定,并利用隶属函数对此进行综合分析。结果:接种南方根结线虫45 d后,不同品种的甜瓜幼苗长势、发病指数等差异较大。结论:地方栽培的常规品种中,‘九道沟’与‘羊角酥’甜瓜对南方根结线虫的抗性较强,‘绿宝石’、‘苹果酥’以及‘海南3号’甜瓜对南方根结线虫抗性居中,‘甜宝’甜瓜对南方根结线虫的抗性最差。 相似文献
7.
本文比较分析了滇池两种水葫芦的形态特征和生物量分配。结果表明,紫根水葫芦和普通水葫芦在根长、叶柄长、叶片长和叶片宽以及根冠比等的差异均达到极显著(p0.01)。紫根水葫芦的各个部分的干重都比普通水葫芦低,其中全株、叶柄、叶片干重的差异达到极显著水平(p0.01),根的干重差异达到了显著水平(p0.05)。紫根水葫芦和普通水葫芦在生物量分配上存在显著差异。两种水葫芦叶柄/全株和叶/全株差异达到显著水平(p0.05),根/全株、叶柄/根、叶/根、叶柄/叶表现出极显著差异(p0.01)。研究结果表明诱变育种措施显著地改变了水葫芦的生物量分配,较大的根系生物量分配应该是紫根水葫芦净化富营养化水体的生物学基础。 相似文献
8.
采用正交试验和感官评价等方法,对苦荞发芽糙米无糖蛋糕的生产工艺进行了优化研究。结果表明,苦荞粉和发芽糙米粉用量比为6∶4、蛋粉比为1.7∶1、添加2%CMC、50%水、0.4%阿斯巴甜为最佳产品配方。 相似文献
9.
Haseeb Akhtar Sharma Anita Shukla Prabhat Kumar 《Journal of Zhejiang University. Science. B》2005,6(8):736-742
Studies were conducted under pot conditions to determine the comparative efficacy of carbofuran at 1 mg a.i./kg soil, bavistin
at 1 mg a.i./kg soil, neem (Azadirachta indica) seed powder at 50 mg/kg soil, green mould (Trichoderma harzianum) at 50.0 ml/kg soil, rhizobacteria (Pseudomonas fluorescens) at 50.0 ml/kg soil against root-knot nematode,Meloidogyne incognita-wilt fungus,Fusarium oxysporum disease complex on green gram,Vigna radiata cv ML-1108. All the treatments significantly improved the growth of the plants as compared to untreated inoculated plants.
Analysis of data showed that carbofuran andA. indica seed powder increased plant growth and yield significantly more in comparison to bavistin andP. fluorescens. Carbofuran was highly effective against nematode, bavistin against fungus,A. indica seed powder against both the pathogens and both the bioagents were moderately effective against both the pathogens. 相似文献
10.
Nadeem Hera Malan Pieter Khan Amir Asif Mohd Ahmad Siddiqui Mansoor Tuhafeni Angombe Simon Ahmad Faheem 《Journal of Zhejiang University. Science. B》2021,22(7):563-574
This study focused, for the first time, on the effect of ultrasonic features on the extraction efficiency of secondary metabolites in mustard seed cake(MSC). The nematostatic potential of sonicated seed cake was examined against the second-stage juveniles(J2 s) of root-knot nematode, Meloidogyne javanica. The results show that a 35 ppm(parts per million) concentration of a sonicated extract(SE) sample of MSC caused 65% J2 s mortality at 18 h exposure period in vitro. It also significantly suppressed the root-knot index(RKI=0.94) in tomato roots. The lethal concentration values for SE were 51.76, 29.79, and 13.34 ppm,respectively, at 6, 12, and 18 h of the exposure period, and the lethal concentration values for the non-sonicated extract(NSE)sample were 116.95, 76.38, and 55.59 ppm, respectively, at similar exposure time. Sinapine and gluconapin were identified as the major compounds in ultrasonic-assisted MSC. Because of the high extraction efficiency of metabolites in the SE, all treatments of SE were shown to be antagonistic to J2 s. Thus, this study of ultrasonication activity-based profiling of MSC may help generate target-based compounds at a scale relevant to the control of disease caused by nematodes in economic crops. 相似文献
11.
研究了不同浓度铅胁迫下补血草种子萌发及幼苗的膜透性,结果表明:铅胁迫对补血草的种子萌发具有低浓度下的激活效应和高浓度下的抑制效应;对幼苗苗长具有胁迫初期低浓度下的激活效应,随着胁迫时间的延长,转而表现为抑制效应,对幼苗根长具有显著的抑制效应.幼苗的生长状况比种子萌发更能体现铅毒性的大小.而根长的变化可作为植物受重金属毒性影响的一个重要指标.幼苗的膜透性的影响是随着铅浓度的增加,膜的通透性增加,选择通透的能力下降. 相似文献
12.
Changes of root morphology and Pb uptake by two species of Elsholtzia under Pb toxicity 总被引：2，自引：1，他引：2
Elsholtzia argyi and Elsholtzia splendens, which are Chinese endemic Pb/Zn mined and Cu mined ecotype respectively, were investigated on the aspect of their response to Pb toxicity in the presence or absence of EDTA addition. After 8 d's Pb treatment, root length, root surface area and root volume of E. splendens decreased much more than those ofE. argyi, and reduced considerably with increase of Pb, while no marked change was noted for root average diameter. Compared to E. argyi, length of root with diameter (D)＜0.2 mm was significantly reduced for E. splendens as Pb increased. D＜0.1 mm E. splendens root had cross-sectional surface area at Pb≥10 mg/L, while for E. argyi, it was at Pb＞25 mg/L. With increase ofPb, DW ofE. splendens decreased much more than that of E. argyi. E. argyi exhibited much more tolerance to Pb toxicity than E. splendens. Treatment with 100 mg/L Pb plus 50 mmol/L EDTA significantly decreased the length and surface area of D≤0.2 mm root, increased the length and surface area of 0.2≤D≤0.8 mm root for the case ofE. argyi, while for E. splendens, length and surface area of D＜0.6 mm root reduced, as compared to 100 mg/L Pb treatment, alone. At 100 mg/L Pb, shoot Pb accumulation in E. splendens and E. argyi were 27.9 and 89.0 μg/plant DW respectively, and much more Pb was uptaken by the root and translocated to the stem ofE. argyi as compared to E. splendens. Treatment of the plant with 100 mg/L Pb plus 50 mmol/L EDTA increased leaf Pb accumulation from 16.8 to 84.9 g/plant for E. splendens and from 18.8 to 52.5 g/plant for E. argyi, while both root and stem Pb pronouncedly reduced for both Elsholtzia species. The increased translocation of Pb to the leaf ofE. splendens being than that ofE. argyi after treatment with 100 mg/L Pb plus 50 mmol/L EDTA should be further investigated. 相似文献
13.
红树植物无瓣海桑北移种植的生长适应研究 总被引：1，自引：0，他引：1
分析了北移种植在福建省霞浦、连江、泉港、集美、漳浦5个样地无瓣海桑（Sonneratiaapetala）的存活率、株高、根长、冠幅、生物量及生物量分配,结果表明：无瓣海桑人工引种北界在26°47′N～26°16′N之间,且存活率随着纬度的增高而降低;各样地无瓣海桑营养器官的含水量为：叶〉根〉茎,其含水量均值分别为86．4％、71．0％、63．0％,植株有机质在根茎叶器官分配为茎〉根〉叶;根部的长度和重量随着纬度的升高而下降;株高、冠幅随着纬度的升高有所变化,但没有显著性差异． 相似文献
14.
Copper accumulation and intracellular distribution in Elsholtzia splendens, a native Chinese Cu-tolerant and accumulating plant species, was investigated by transmission electron microscope (TEM) and gradient centrifugation techniques.Copper concentrations in roots, stems and leaves of E. splendens increased with increasing Cu levels in solution. After exposure to 500 μmol/L Cu for 8 d, about 1000 mg/kg Cu were accumulated in the stem and 250 mg/kg Cu in the leaf of E. splendens. At 50μmol/L Cu, no significant toxicity was observed in the chloroplast and mitochondrion within its leaf cells, but separation appeared at the cytoplasm and the cell wall within the root cells. At ＞250 μmol/L Cu, both root and leaf organelles in E. splendens were damaged heavily by excessive Cu in vivo. Copper subcellular localization in the plant leaf after 8 days' exposure to 500 μmol/L Cu using gradient centrifugation techniques was found to be decreased in the order: chloroplast＞cell wall＞soluble fraction＞other organelles. The plant root cell wall was found to be the site of highest Cu localization. Increase of Cu exposure time from 8 d to 16d, increased slightly Cu concentration in cell wall fraction in roots and leaves, while that in the chloroplast fraction decreased in leaves of the plants grown in both 0.25 μmol/L and 500 μmol/L Cu. TEM confirmed that much more Cu localized in cell walls of E. splendens roots and leaves, but also more Cu localized in E. splendens' chloroplast when the plant is exposed to Cu levels＞250μmol/L, as compared to those in the plant grown in 0.25 μmol/L Cu. Copper treatment at levels＞250 μmol/L caused pronounced damage in the leaf chloroplast and root organelles. Copper localization in cell walls and chloroplasts could mainly account for the high detoxification of Cu in E. splendens. 相似文献
15.
探究不同移栽密度对诸葛菜的生长和籽粒产量的影响,确定适宜的移栽密度,为沿淮地区诸葛菜高产栽培提供参考。采用单因素随机区组试验,设置五种不同的移栽密度(11.68万株/hm~2、14万株/hm~2、16.33万株/hm~2、18.66万株/hm~2、21万株/hm~2)的处理测定诸葛菜的生长指标和产量指标。随着移栽密度的增加,诸葛菜的株高、无效分枝、主花序有效长度、主花序有效角果数、秸秆干重、每角果粒数及产量均呈现先增加再降低的趋势,而根颈粗、千粒重、二次分枝数等呈现下降趋势。在江淮地区诸葛菜种植密度为16.33万株/hm~2时,产量达到最高为674.09 kg/hm~2。 相似文献
16.
宁波年糕一直是一方百姓喜欢的传统食品,民间常用木质材料雕刻而成的年糕板来制作各种花样年糕,图案喜庆、吉祥,造型千姿百态,使年糕赋予了非物质文化的内涵。随着社会的发展,年糕以机器生产逐渐代替了手工年糕板生产,虽然产量提高了,但褪去了传统年糕的特色,也阻碍了行业的特色发展。如何使民间年糕板重新应用于现代年糕生产,使该产业打破单一模式,凸显文化特色,拓展更广阔的市场,是本文想要探讨的问题。 相似文献
17.
A hydroponic experiment carried out to study the effect of five Cd levels on growth and photosynthesis of two tomato cultivars showed that the addition of 0.1 μmol/L Cd induced a slight increase in plant height of Hezuo 903 and the SPAD (the Soil-Plant Analyses Development) value of the 2 cultivars. However, at higher Cd levels, i.e., 1 and 10 μmol/L, root length and volume, plant height, and SPAD value were all significantly reduced. On an average of the 2 cultivars, exposure to 1 and 10μmol/L Cd for 33 d reduced plant height by 18.9% and 46.4% and SPAD value by 11.2% and 31.6%, compared with control,respectively. Similarly, root length was reduced by 41.1% and 25.8% and root volume by 45.2% and 63.7%, respectively. The addition of Cd in the growth medium also had significant deleterious effect on net photosynthetic rate (Pn) and intracellular CO2concentration (Ci), with Pn being reduced by 27.2% and 62.1% at 1 μmol/L and 10 μmol/L Cd treatments compared to the control,respectively, while Ci increased correspondingly by 28.4% and 39.3%. 相似文献
18.
植物几丁质酶及其基因工程研究进展 总被引：4，自引：0，他引：4
几丁质是构成大多数真菌细胞壁的主要成分.几丁质酶广泛存在于植物、动物及微生物细胞和组织中,参与多种生理过程.研究发现,许多微生物都可以产生几丁质酶,几丁质酶的生物活性可显著抵抗植物真菌病害.目前有多种植物、微生物几丁质酶基因已经被克隆出来,并有部分已经转化应用于植物抗病,有些显现出良好效果. 相似文献
19.
在缺苞箭竹紫果云杉原始林下选取3个密度的缺苞箭竹,研究了密度对缺苞箭竹生物学特性的影响．结果表明,箭竹各年龄株高、基径、节数和平均单株地上生物量随密度增大逐渐增高,1～6龄幼竹数量所占比例均较高,表明三个密度均属于增长型种群,但老龄竹所占比例随密度增大不断增大．在空间层次上,各密度枝、叶在100～200cm,竹杆在100cm以下空间占有较大比例的生物量,地上／地下生物量比率总体随密度增大而增大．（140±8）株／m ^2和（220±11）株／m^2密度箭竹各构件器官生物量排序均为竹杆〉竹鞭〉根系〉枝〉叶,而低密度（80±5）株／m^2则为竹鞭〉竹杆〉根系〉枝〉叶．总之,密度变化对缺苞箭竹生物学特性产生了影响． 相似文献
20.
喷干系统是蛋粉加工过程中最重要的一个环节。在探索出该系统中压力随温度变化规律的基础上，开发了相应的智能PID控制算法，从而实现了蛋粉生产过程中质量、出粉率以及能耗3项性能指标的最佳协调控制。 相似文献