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叶黄素是万寿菊中的主要提取物,它广泛用于饲料添加剂和食品添加剂领域。据统计,我国每年叶黄素的产量在8亿 g 左右,占世界总产量的85%;而每年世界上的叶黄素需求量在13亿~15亿g,缺口在3亿~5亿 g。作为万寿菊深加工产品,叶黄素晶体(食品医药原料)每吨售价在1500万元左右,国际市场上,1g叶黄素的价格与1g黄金相当,效益十分可观。尤其是近几年来,人们生活水平显著提高,消费观念相应转变,追求天然、无公害产品已成为主要需求方向,天然叶黄素作为食品、饲料、医药领域的高科技产品,越来越被国内外知名企业看好。据专家预测,21世纪是绿色消费时代,天然叶黄素必然代替人工合成色素。生产天然叶黄素的万寿菊市场前景十分广阔。 相似文献
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天然色素植物万寿菊丰产高效栽培模式 总被引:2,自引:0,他引:2
万寿菊(Tagetes erectaL·)是菊科万寿菊属1年生草本植物。其花瓣中提取的植物天然叶黄素是一种性能优异的抗氧化剂,具有抗癌作用;可预防人体因器官衰老而引起的一系列疾病;同时还可以作为食品、药品和化妆品的色素添加剂。目前国内外对从万寿菊中提取的叶黄素的需求量日益增大 相似文献
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收集适性区内遗存的艾纳香品种进行生长及艾粉提取率试验,结果表明:艾纳香人工种植以第2-3年产量最高;栽培驯化会促进艾叶中艾粉的积累和龙脑含量的提高;艾纳香的生产种植首选大艾,其次为马其艾。 相似文献
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不同品系万寿菊花中叶黄素和叶黄素酯含量的测定 总被引:2,自引:0,他引:2
采用反相高效液相色谱法测定不同颜色万寿菊花(包括花瓣和花萼)中叶黄素和叶黄素酯的含量.通过与叶黄素标准品比较,并利用相同色谱条件下的色谱图确定万寿菊花中含有叶黄素和6种叶黄素二酯,即月桂酸-肉豆蔻酸酯、二肉豆蔻酸酯、肉豆蔻酸-棕榈酸酯、二棕榈酸酯、棕榈酸-硬脂酸酯及二硬脂酸酯.不同颜色万寿菊花中叶黄素和叶黄素酯的含量差别较大,黄绿色花色素含量为 0.024 %,橙色花色素含量高达1.148 %(均以干花粉计),颜色越深,叶黄素酯含量越高.万寿菊花的色素含量与脂肪含量呈明显正相关(R2=0.974). 相似文献
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在田间试验条件下,采用裂区设计,以三倍体毛白杨无性系S1、S6、S8、S11为试验材料,以二倍体毛白杨S10为对照,采用7种种植密度A1(2 m×2 m)、A2(2 m×3 m)、A3(2 m×3.5 m)、A4(3 m×4 m)、A5(2 m×4 m)、A6(2 m×5 m)、A7(3 m×3 m),研究了不同品种和种植密度对三倍体毛白杨叶片营养元素含量的影响。结果表明:不同的无性系对三倍体毛白杨叶片中N、P、K、Ca、Mg的含量均有极显著的影响。叶片中N含量最高的是S6(27.41 g/kg),P含量最高的是S1(1.88 g/kg),K含量最高的是S8(3.59 g/kg),Ca、Mg含量最高的分别是S10(10.48 g/kg)、S11(4.61 g/kg)。不同种植密度对叶片中N元素的含量有显著的影响,其中叶片含N量最多的是A6,达26.97 g/kg。而不同种植密度的无性系叶片中P、K、Ca、Mg的含量无显著差异。相关性分析表明,各元素之间存在一定的相关性,Mg与Ca之间呈显著正相关,与K之间呈显著负相关。 相似文献
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不同地类毛竹移栽母竹造林试验表明,新竹株数由多至少依次为:杨梅园、地瓜山、柑桔园、李园、普通山地;新竹质量好坏顺序为杨梅园、柑桔园、地瓜山、李园、普通山地;新竹最大扩展范围由大至小顺序为杨梅园、地瓜山、柑桔园、李园、普通山地。从造林的总体质量看,杨梅园、地瓜坡耕地是最好的毛竹栽植地,柑桔园、李园的毛竹栽植效果也较好,位普通山地造林效果最差。结果可为破耕地及果园套种毛竹提供指导。 相似文献
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Mohammad Shaheed Hossain Chowdhury Shampa Biswas Md. Abdul Halim S. M. Sirajul Haque Nur Muhammed Masao Koike 《林业研究》2007,18(1):27-30
Status of organic carbon (C), total nitrogen (N), available potassium (K), calcium (Ca) and phosphorus (P) in three different depths (0-5 cm, 5-15 cm and 15-30 cm) on two hill slopes of 35% and 55% in orange orchard cultivated by the Mro tribe of Chittagong Hill. Tracts (CHTs) were evaluated and compared with those in degraded bush forests, through digging three profiles in each land use. The content of all the five nutrients was found to be higher in the soil of orange orchard than in the soil of forest. But the variation was not consistent for both the slopes. The content varied depth wise also, having the highest value in surface soil in case of both the land uses on both the slopes. A mean available K content was significantly higher in orange orchard than in forest on 55% slope, while it was lower on 35% slope. Surface soil contained the nutrients of K and Ca with the amount of 0.2905-mg·g^-1 soil and 3.025-mg·g^-1 soil respectively in the orchard, while 0.1934-mg·g^-1 soil and 1.6083-mg·g^-1 soil were respectively in the forest. Organic carbon and total nitrogen were found more or less similar in surface soil on both the land uses showing a slight difference. Available P was found only in orange orchard, and in forest it was too little in amount to detect by the spectrophotometer. The degraded forests were poor in nutrient content due to high rate of soil erosion, which would be possible to be improved by bringing it under tree cover as proved by the adaptation of orange orchard there. 相似文献
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沼肥对促进脐橙生长及提高产量与品质的效果研究 总被引:1,自引:0,他引:1
对沼肥在脐橙上的施肥效果进行分析研究,得出沼肥对脐橙根、茎、叶的生长及花蕾的形成有明显的促进作用,对提高脐橙产量,增加糖分含量,改善果品品质,减少病虫害的发生有明显的作用。 相似文献
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Mohammad Shaheed Hossain Chowdhury Md. Abdul Halim Shampa Biswas S. M. Sirajul Haque Nur Muhammed Masao Koike 《林业研究》2007,18(3):245-248
The physical properties of soil on two hill slopes of 35% and 55% in orange orchard cultivated by the Mro tribe of Chittagong Hill Tracts (CHTs) were evaluated and compared with those of bushy hill forests. Soil samples were collected from three different depths (0-5 cm, 5-15 cm and 15-30 cm), digging three profiles in each land use for determining moisture content, organic matter content and particle density. Maximum water holding capacity, field capacity, dry and moist bulk density and porosity were determined only for the surface soils. Moisture content at all the soil depths was significantly higher (p≤ 0.05) in orange orchard than in forest on both the slopes. Orange orchard contained lower mean soil organic matter than forest on 55% slope, while it contained higher values on 35% slope compared to forest. The highest value of the above two properties was found at surface soil in both the land uses on both the slopes, decreasing with the increase of soil depth. On both the slopes maximum water holding capacity and porosity of surface soil and particle density at all soil depths were lower in orange orchard compared to those in forest. Field capacity values of surface soil did not show consistency in trend for the differences between the two land uses on both the slopes. Bulk density value of moist and dry surface soil was higher in orange orchard than in forest on both the hill slopes. 相似文献
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抗锈色粒肩天牛国槐优株的生物碱含量测定 总被引:1,自引:0,他引:1
锈色粒肩天牛Apriona germari(Hope)是危害国槐的最重要的蛀干害虫,近年来在山东省发生危害十分严重。本研究对抗虫优株及感虫株国槐树皮进行总生物碱的含量进行了测定。有机溶剂法结果为每500g干物质样品抗虫株得到生物总碱2.4880g,感虫株生物总碱为1.2220g;水提法每200g干物质样品抗虫株得到生物总碱0.0310g,感虫株生物总碱为0.018g。利用高效液相色谱法对抗虫和感虫树皮样品的总生物碱进行分离,结果表明,抗虫和感虫株样品中主要含两种生物碱,而且其相对含量相似。因此,我们认为国槐抗虫株中的抗虫性主要是由于其树皮中总生物碱的高含量引起的,而不是由于其树皮中含有特殊的生物碱单体造成的。 相似文献
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本文比较测定了对叶枯病具有高度抗性的侧柏单株叶片中木质素和纤维素含量、苯丙氨酸解氨酶(PAL)和超氧化物歧化酶(SOD)、以及细胞含水量和肉质化程度。结果表明,抗病单株叶片细胞中木质素和纤维素的含量显著地高于普通的感病侧柏;抗病单株的PAL活性和SOD活性也明显高于感病株。并且发现PAL活性和木质素含量之间具有高度相关性。抗病单株的细胞含水量和肉质化程度则显著地低于感病株。综上指标说明,抗病单株在生理生化和遗传上,明显地区别于普通感病株。 相似文献
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将脐橙、温州蜜柑、Peng柑叶片比重的测定结果与1991 ̄1992年的冻害程度进行比较,并将叶片比重作为评价脐橙品种抗寒性的一个指标的可行性进行了讨论。 相似文献