天然保健品中的黑马-螺旋藻

科学家发现,1克螺旋藻的营养成分相当于1000克水果和蔬菜的综合含量,是营养均衡的天然食品。其中的多种氨基酸、维生素和多种微量元素,能消除疲劳,恢复和激活脑细胞活性。螺旋藻中维生素含量丰富,种类多,包括维生素B1、B2、B3、B6、B12。及维生素E。其中富含其他植物罕见的藻蓝素、酵素,可增强人体的免疫力。有抗衰老、提高机体免疫力、防癌、抗癌的作用。     

具有美容功效的中药

芦荟 味苦，性寒。归肝经、大肠经。芦荟含有大量的天然蛋白质、维生素、叶绿素、矿物质、氨基酸、脂肪酸、活性酶、微量元素等营养成分，还含有芦荟素、芦荟黏多糖、芦荟甙、活性水等多种使皮肤美白的特殊功效成分，其中脂肪酸和维生素E是芦荟中含量最高的成分，它们恰恰是表皮细胞所需的营养，可以及时修复晒后受损的皮肤。[第一段]     

药食两用话金蝉

<正>金蝉,又名知了猴、知了龟,素有唐僧肉的美誉。金蝉含有多种微量元素,具有特殊的营养价值。据中国食品营养学院理化分析与研究发现:每100克黄金蝉若虫富含蛋白质72克、脂肪15克、灰分1.8克;此外,还含有人体必需的钙、磷、铁和多种维生素。经科学分析,蚱蝉体内含有丰富的氨基酸、蛋白质及微量元素,人体必需的氨基酸占氨基酸总含量的46.63%。     

东北地区大米中微量硒的荧光光谱法测定

<正>大米含有丰富的淀粉、维生素、氨基酸、蛋白质、脂肪、黄酮和多种矿物质元素,具有较高的营养价值。硒是人体必需的微量元素之一,分布于除脂肪以外的所有组织中,各种组织器官中的硒含量与膳食摄人量及所处的地理环境有关。硒是谷胱甘肽过氧化物酶(GSHPx)的重要组分,具有很强的抗氧化、消除自由基作用,硒能保护心血管和心脏的正常功能。硒和维生素E对心肌纤维、小动脉及微循环的结构和功能均有协同保护作用。硒还有保护视力器官、刺激免疫     

石榴开口笑 全身都是宝

正石榴在我国栽培历史悠久,目前大约有70多个品种,分为观赏和食用两大类。石榴营养丰富,含有多种人体所需的营养成分,果实中含有维生素C及B族维生素、有机酸、糖类、蛋白质、脂肪,以及钙、磷、钾等矿物质。据分析,石榴果实中含碳水化合物17%,水分79%,其中维生素C的含量比苹果高1~2倍,而脂肪、蛋白质的含量较少,果实以鲜吃为主,也可制成饮料,石榴汁含有多种氨基酸和微量元素,有抗胃溃疡、助消化、软化血     

螺旋藻粉尘致职业性变态反应性肺泡炎1例报告

天然螺旋藻因其含有极为丰富的蛋白质和人体所必需的微量元素、维生素、γ-亚油酸等,对人体保健具有很好的生物学效应而成为我省研究开发的一个珍贵资源.今报告1例螺旋藻粉生产作业人员职业性变态反应性肺泡炎(Occupaational exerinsic allergic alveolitis,OEAA).     

答读者问

胡健国同志: 你来信询问关于孩子缺锌的问题,现请由我省微量元素与健康研究会陈生茂、王克武医师答复如下: 本刊编辑部 1999.9.15 锌是人体必需的微量元素儿童缺锌现象比较普遍硫酸锌糖浆口服液是一种高效锌补给剂锌是人体必需的微量元素,如同人体离不开糖、脂肪、蛋白质、水、维生素一样,它参与机体多种生理生化过程,具有重要的生物学作用。一、锌与生长发育的关系:RNA和DNA聚合酶是一种含锌酶,锌缺乏可直接影响核酸及蛋白质的     

吃点野菜，为健康加分

有资料表明，野菜味道鲜美，营养丰富，不但含有人体必需的蛋白质、脂肪、糖、无机盐、微量元素和纤维素，且有的野菜所含胡萝卜素、维生素C、核黄素还高于一般家蔬。     

居家小贴士

山芋该怎么吃?山芋又名红薯。它含有大量的糖、脂肪、维生素C和胡萝卜素等,还有各种人体必需的微量元素。它所含的蛋白质超过大米、白面和玉米。所含的糖主要是麦芽糖和葡萄糖,甜味温和可口,山芋中的淀粉很丰     

螺旋藻提取物的短期毒性研究

辐拜尔胶囊系一种由螺旋藻提取物研制而成的新型保健食品 ,螺旋藻主要含有优质蛋白质 ,多种维生素 ,人体必需微量元素、螺旋藻多糖等生物活性物质 ,故螺旋藻被认为是“超级微型营养库”[1～ 2 ] 。具有改善人体免疫功能 ,增强体质等作用。当前 ,保健食品的法规日趋完善 ,但有关     

螺旋藻中氨基酸含量水平测定及其营养保健价值

目的:研究螺旋藻中各种氨基酸含量及其营养保健价值。方法:用氨基酸分析仪检测螺旋藻中各种氨基酸的组成。结果:螺旋藻中含有赖氨酸、天门冬氨酸、胱氨酸、谷氨酸、苯丙氨酸、苏氨酸、色氨酸、缬氨酸等18种氨基酸,氨基酸总含量为55.20%;其中人体必需氨基酸总含量为25.83%;非必需氨基酸总含量为29.37%;必需氨基酸含量占总氨基酸含量的46.79%;必需氨基酸与非必需氨基酸之比为87.95%。结论:表明螺旋藻在营养学上有一定的研究价值与保健功效,具有很好的开发应用前景。     

A work-site nutrition intervention: its effects on the consumption of cancer-related nutrients.

OBJECTIVES. In a work-site nutrition intervention targeting fat and fiber, we examined the intervention's effect on specific nutrients implicated in carcinogenesis, including trace metals, vitamins, and categories of fatty acids. The rationale was based on the association observed in a variety of epidemiologic studies between these nutrients and epithelial cancers. METHODS. Data were taken from eight control companies and five intervention companies that fully implemented the Treatwell intervention. Analyses of variance were used preserving the study's nested design. RESULTS. Significant intervention-related associations were observed for increased total vitamin A and carotene. Marginal intervention effects were observed for relative decreases in the percentage of calories from both saturated and monounsaturated fatty acids, a relatively smaller increase in the percentage of calories from polyunsaturated fatty acids, and an increase in the consumption of vitamin B6. CONCLUSIONS. Results indicate a broader effect of the intervention than on fat and fiber only. Increased intake of carotene, the single most important of these other nutrients, is plausibly related to a variety of epithelial cancers.     

山牛蒡中微量元素和维生素测定

目的:测定山牛蒡中微量元素和维生素的含量。方法:用ICP-MS电感耦合等离子体质谱仪测定微量元素含量,用HPLC法测定维生素。结果:锰的含量高,锌、铜次之;维生素C的含量最高,β-胡萝卜素、维生素E的含量次之。     

A randomized study to establish the effects of spirulina in type 2 diabetes mellitus patients

Spirulina is a microscopic and filamentous cyanobacterium that contains essential amino acids, essential fatty acids, vitamins, minerals and anti-oxidative components. The purpose of this study was to examine effects of spirulina intervention in Korean patients with type 2 diabetes. The subjects were 37 type 2 diabetic patients who visited a diabetic clinic in Seoul and randomly assigned into spirulina (8 g/day) or control group. During the intervention period of 12 weeks, subjects were asked to keep usual diet and prohibited to take any functional foods or dietary supplements. Spirulina supplementation for 12 weeks did not affect anthropometric parameters, however, lowered plasma triglycerides level significantly (p<0.05). Spirulina supplementation also resulted in a significant reduction in plasma malondialdehyde level (p<0.05) and an increase in plasma adiponectin level (p<0.1). The lipid lowering effect of spirulina supplementation was different according to serum lipid levels of the subjects before entering the intervention. The subjects with higher initial triglyceride level showed higher reduction in plasma triglyceride and blood pressure. The subjects with higher initial total cholesterol and LDL-cholesterol level showed higher reduction in plasma concentrations of total cholesterol, LDL-cholesterol, IL-6, and blood pressure. It seems that spirulina supplementation is more effective in subjects with dyslipidemia. This study provides the evidence for beneficial effects of spirulina supplementation on blood lipid profiles, inflammatory variables, and antioxidant capacity in Korean patients with type 2 diabetes. The results suggest that spirulina is a promising agent as a functional food for diabetes management.     

长白山区蹄叶橐吾及其嫩茎中维生素和微量元素的分析

[目的]研究长白山区野生蹄叶橐吾和种植蹄叶橐吾及其嫩茎中维生素和多种微量元素的含量。[方法]采用高效液相法和电感耦合等离子质谱法测定维生素和多种微量元素的含量。[结果]野生蹄叶橐吾叶中VB1、VB2、VC、VPP、VE和叶酸及胡萝卜素的含量高于种植的,叶中又高于茎中的;野生蹄叶橐吾的叶和嫩茎中微量元素总量明显高于种植的元素的。[结论]野生和种植蹄叶橐吾在食品工业与医药领域有潜在的开发利用价值。     

Maintenance of vitamin and trace element status in intravenous nutrition using a complete nutritive mixture

Complete nutritive mixtures (CNM) of all intravenous nutrients including fat emulsions are being used increasingly because of their convenience. However, this may lead to chemical interactions and reduce the amount of active vitamins and trace elements made available to the patient. We have studied the effects on micronutrient status of provision of all nutrients in one 3-liter bag (CNM: amino acids, dextrose, Intralipid 20%, a nine-element trace metal mixture, and complete fat- and water-soluble vitamin mixtures) in 10 postoperative surgical patients [median intravenous nutrition (IVN) 14.5 days, range 7-38]. A similar group received the fat emulsion plus water- and fat-soluble vitamins as a separate infusion (SI) from a 3-liter bag (median IVN 14.0 days, range 8-28). Serum and urine magnesium, zinc, copper, manganese, chromium, and selenium, serum vitamins A, E, C, folate, and B12, RBC B1, B2 B6, and folate and leukocyte vitamin C were measured at weekly intervals. All patients in both groups maintained or improved their status for all the micronutrients analyzed. No significant differences between the CNM and SI groups were found in blood concentrations of any of the elements or vitamins. Only for urine copper did the CNM lead to increased excretion (1.51 +/- 0.59 mumol/24 hr; copper input 20 mumol/day), compared to SI (1.00 +/- 0.70 mumol/day, p less than 0.001 Mann-Whitney test) suggesting possible interaction. It is concluded that micronutrient status was maintained during short-term IVN with the CNM and that it did not lead to a significantly greater loss of vitamins or essential trace elements than the SI system.     

常见微量元素与人体健康(综述)

目的:介绍关于微量元素与人体健康的知识.方法:查阅总结文献、资料、书籍,专门对微量元素的缺乏和过量会引起人体各种疾病的相关知识作系统阐述.结果:提高人们对有微量元素和人体健康知识的了解,对人们的健康有益.结论:人体特别是成人体内的各种必需微量元素的含量是一定值,它们既不能缺少,也不能过量,否则均会引起生理异常,从而产生疾病.     

硒与人体健康的研究进展

硒是人体三大抗氧化营养素之一,也是人体必需的微量元素.硒具有抗氧化、消除自由基、增强机体免疫等多种生理功能,同时在重金属解毒、保护心肌和心血管以及抗癌等方面也起到极为重要的作用.适当增加硒的摄入量,对维持身体健康、预防衰老、防治某些疾病的发生都具有重要意义.硒对机体具有双重作用,过量的摄入和补充硒可以导致硒中毒发生,应给与重视.     

Vitamin A equivalence of spirulina beta-carotene in Chinese adults as assessed by using a stable-isotope reference method

BACKGROUND: Spirulina is a high-protein food supplement that contains carotenoids. OBJECTIVE: The objective of the study was to determine the vitamin A equivalence of spirulina beta-carotene in humans. DESIGN: Spirulina was grown in a 23 atom% (2)H(2)O cultural solution. Spirulina beta-carotene showed the greatest enrichment as [(2)H(10)]trans beta-carotene. Ten healthy Chinese men with a mean (+/-SD) serum retinol concentration of 1.7 +/- 0.3 micromol/L and a body mass index (in kg/m(2)) of 23 +/- 3 consumed 5.8 micromol [(13)C(10)]retinyl acetate in oil as a reference dose with a breakfast containing 13 g fat. One week later, each subject consumed 7.9 mumol trans beta-carotene in spirulina with a breakfast containing 22 g fat. All subjects followed diets low in carotenoid and vitamin A. Forty blood samples were collected from each subject over a span of 56 d. Concentrations and enrichments of retinol and beta-carotene in serum samples were determined by using HPLC and a mass spectrometer. RESULTS: Compared with the serum response to [(13)C(10)]retinyl acetate dose, the mean conversion factor of spirulina beta-carotene to retinol was 4.5 +/- 1.6 (range: 2.3-6.9) by weight. It was estimated that 80% of the conversion occurred within the first 24 h after spirulina administration. CONCLUSION: In a group of well-nourished, normal-weight Chinese men following low-vitamin A diets, 4.5 mg spirulina beta-carotene consumed with 22 g fat has the same vitamin A activity as does 1 mg retinyl acetate.     

Les progrès de l'alimentation animale pour satisfaire les critères de qualité : du producteur au consommateur !

Consumers’expectations have drastically changed over the last twenty years. Animal products are more and more transformed into ready-to-cook even ready-to-eat products. To the performance target, have been added consumers’desires such as quality, health and transformers’constraints for homogeneity and capacity for further processing. The nutritionist becomes the scientist of the compromise. He has to reach performance with quality with the help of feed complements and additives such as amino acids, vitamins, trace minerals. He can use rapid evaluation tool to adapt complementation to the actual batch of raw materials as well as exogenous enzymes to better access the valuable nutrients. By modifying the feeding strategy and feed composition, the nutritionist is able to contribute to satisfy human needs: from polyunsaturated fatty acids to vitamins and health benefits. Furthermore, the overall target is to guarantee the sustainability of animal productions.