花粉是内服的美容剂

花粉是内服的美容剂女性到中年，由于内分泌失调，面部就会出现黄褐斑、粉刺、雀斑、蝴蝶斑、痤疮，这主要是缺乏维生素Ｂ１、Ｂ２、Ｂ６、维生素Ｃ所引起。而花粉又富含多种维生素、氨基酸，如果中年女性能经常食用蜂花粉，以上所缺乏的物质就会得到补充。所以凡是用过花...     

健身佳品蜂花粉

健身佳品蜂花粉花粉是高等植物的雄性配子，是植物的精华，经蜜蜂采集后与其分泌物的混合物。花粉中含有２１种氨基酸（其中有８种是人体所必需的氨基酸），Ａ．Ｂ１、Ｂ２、Ｃ、Ｅ等１５种维生素、碳水化合物以及钠、铁、铜、钙、钛等２０多种微量元素。花粉中含有的天然...     

花粉与美容

花粉营养成分十分丰富 ,在国际上被称为“完全营养品”。它富含氨基酸、胡萝卜素、维生素A、维生素C、维生素E、磷脂核酸等护肤成分。本文主要阐述了这些营养成分对皮肤的美容机理。     

青海油菜蜂花粉营养成分分析测定

青海油菜蜂花粉营养成分分析测定刘凤云，张坚，许子俊，康胜利，李晓红，王晋，张伯宁（青海高原医学科学研究所，西宁：８１００１２）花粉［１］是有花植物的雄性生殖细胞，直径为１０～２０微米，含有丰富的糖类、蛋白质、氨基酸、维生素、微量元素等营养成分，而且其...     

花粉中生长素的研究

花粉中生长素的研究①王开发张玉兰（同济大学花粉应用研究中心，邮编：２０００９２）蒋滢（苏州医学院生化教研室）花粉含丰富营养成分，已有不少文献加以论述，但花粉中的生长素报道不多，花粉所含生长素是其重要的营养成分之一。１人生长素人生长素是１９１个氨基酸残...     

马来西亚的油棕（Elaeis huneesis）花粉营养成分研究

对马来西亚油棕花粉进行了蛋白质、氨基酸、游离氨基酸、还原糖、蔗糖、粗脂肪、磷脂、维生素C、维生素E、类胡萝卜素、黄酮类、多糖、多肽以及矿物元素的测试和研究,结果表明油棕花粉营养成分丰富而全面,且具特色,很有利用价值。     

花粉——饲料添加剂的新资源

花粉──饲料添加剂的新资源同济大学花粉应用研究中心张玉兰花粉营养成分非常丰富，它含有蛋白质、氨基酸、碳水化合物、类脂、多种维生素、１００多种天然酵素、酶和辅酶、常量和微量矿物元素、有机酸、核酸、胡萝卜素、生长素、黄酮类、抗菌素等，是一种营养丰富的天然...     

花粉饲料添加剂在肉鸡饲喂中的使用效果

花粉是植物的繁殖细胞,是一种新资源。花粉营养丰富,含有蛋白质、氨基酸、磷脂、糖类、维生素、矿物元素、活性酶、胡萝卜素、黄酮素、生长素等营养成分,是一种天然营养品。在国际上有“完全营养素”之美誉。大量试验表明,花粉没有抗药性,具有提高机体免疫功能,促进...     

不同破壁法对花粉提取液中可溶性营养成分的影响

本文探讨了不同破壁法对不同花粉的破壁效果，以及对花粉提取液中可溶性营养成分的影响。用玉米、养麦、盐肤木等三种大小、形态、壁的厚薄及营养成分含量各异的花粉，分别进行水浸、机械破壁、温差破壁、酵母发酵、胃酶及米曲霉提取液消化等处理。不同破壁、提取方法作用的机理、强弱不同，花粉形态的变化也不一致。前三种方法属物理方法，花粉形态变化主要表现在破壁或内容物的外渗上，后三种本质上属酶消化法，花粉形态变化以内容物消化为主，其中以米曲霉提取液的消化现象最为典型。各处理中，机械破壁的效果显著优于其它处理；花粉水提液中可溶性氨基氮与维Ｃ含量，则以米曲霉组最高。此外，提取液中可溶性营养成分的多少，还受原花粉中营养成分含量高低的影响。     

人工合成蜜蜂饲料

人工合成蜜蜂饲料最近，日本北海道养蜂研究所研制成功一种蜜蜂用的人工饲料。该饲料配方如下（重量百分比）：白糖４５，大豆蛋白粉１５、花粉５，膨化玉米淀粉５，奎宁粉３，酪蛋白粉２，维生素族（包括维生素Ａ、Ｂ１、Ｂ２、Ｂ６、Ｂ１２、Ｃ、Ｄ、Ｅ等）０．３，矿物...     

火龙果营养成分及功能性物质研究进展

火龙果中含有丰富的蛋白质、氨基酸、矿质元素、维生素及脂肪酸等营养成分,同时还含有类黄酮、膳食纤维、植物多糖、植物甾醇和苷类化合物等多种功能性物质,在预防心血管疾病、排毒解毒、降低血浆胆固醇、预防便秘和结肠癌等方面具有良好的保健功效。本文就火龙果所含的营养成分和功能性物质方面的研究进行了综述。     

The efficacy of a subcutaneous injection of soluble Vitamin B12 in lambs

AIMS: To assess the efficacy of a soluble Vitamin B12 injection in lambs by measuring changes in the serum and liver Vitamin B12 concentrations. METHODS: Thirty-six lambs were injected subcutaneously with 2 mg of soluble Vitamin B12 while another group of 36 served as untreated controls. Blood and liver biopsy samples for Vitamin B12 determinations were collected just before the injection and at days 1, 2, 5, 8, 16, 24, 30 and 45. RESULTS: The serum Vitamin B12 concentrations of the Vitamin B12 treated lambs increased rapidly compared to the untreated lambs. Concentrations peaked at day 2, decreased rapidly to day 8, and then decreased more slowly until day 24 when there were no longer differences between the groups. Liver Vitamin B12 concentrations of the Vitamin B12 treated lambs were significantly greater over days 8-24. CONCLUSION: A subcutaneous injection of 2 mg of soluble Vitamin B12 was effective in increasing and maintaining the Vitamin B12 status of lambs for about 24 days. CLINICAL SIGNIFICANCE: This Vitamin B12 product is only effective for preventing cobalt deficiency in lambs for about 4 weeks.     

VB6对家蚕氮代谢的影响

用人工饲料无菌饲育方式，分析维生素B6（VB6）对家蚕丝腺生长、血淋巴蛋白质浓度、血淋巴游离氮基酸组成变化及氮代谢终产物尿酸形成的影响。结果表明：5龄期家蚕在缺乏VB6条件下，丝腺生长严重受阻碍，血淋巴蛋白质不能正常合成，使体内氨基酸转化利用率下降，氮代谢终产物尿酸的排泄量增加，血淋巴中部分游离氮基酸浓度下降，特别是合成丝蛋白质主要成分的Ala、Ser和Tyr等蚕体非必需氨基酸的组成比率显著减少，而Gly、Orn和Cysta等的浓度增加异常，导致血淋巴中游离氨基酸组成动态平衡破坏，显示蚕体内固VB6缺乏引起氨基酸谢代调。     

An evaluation of the efficacy of injectable microencapsulated vitamin B12 in increasing and maintaining the serum and liver vitamin B12 concentrations of lambs

AIM: To develop a long-acting Vitamin B12 injection to prevent Co deficiency in sheep. METHODS: Formulations of microencapsulated Vitamin B12 in lactide-glycolide polymers were injected intramuscularly or subcutaneously into the anterior neck region of groups of 10 lambs and their efficacy determined from changes in serum and liver Vitamin B12 concentrations. RESULTS: The 95:5 lactide glycolide and the 100 lactide formulations containing more than 12.5% Vitamin B12 w/w significantly increased and maintained serum Vitamin B12 concentrations for at least 210 days as well as liver Vitamin B12 concentrations in treated lambs when compared with untreated controls. CONCLUSIONS: Injections of microencapsulated Vitamin B12 in lactide/glycolide copolymers are able to increase and maintain the Vitamin B12 status of lambs for at least 210 days. CLINICAL SIGNIFICANCE: Another option for the prevention of Co deficiency in sheep is now available using a long acting injectable Vitamin B12.     

The effect of increasing the Vitamin B12 status of Romney ewes on foetal liver Vitamin B12, milk Vitamin B12 and liver Vitamin B12 concentrations in suckling lambs

AIM: To determine the effect of increasing the Vitamin B12 status of the ewe on the Vitamin B12 supply to the suckling lamb. METHODS: The Vitamin B12 status of the ewe was increased during gestation and lactation by three injections of a long-acting preparation of Vitamin B12 microencapsulated in an organic acid polymer. The Vitamin B12 status of the ewes and suckling lambs was assessed from changes in serum and liver Vitamin B12 concentrations. RESULTS: Compared to untreated animals, serum and liver Vitamin B12 concentrations of the treated ewes were increased at least 70% during gestation. Foetal liver Vitamin B12 concentrations were increased 270%. Over the lactation, ewe serum and milk Vitamin B12 concentrations were increased at least 200% and 44%, respectively. The liver Vitamin B12 stores of the newborn lambs from Vitamin B12-treated ewes were depleted within 58 days. There were no significant differences in the serum Vitamin B12 concentrations of suckling lambs from Vitamin B12-treated and untreated ewes. CONCLUSION: Ewes with a high Vitamin B12 status will ensure an adequate supply of Vitamin B12 to their lambs for at least the first 30 days of life. CLINICAL SIGNIFICANCE: In flocks grazing Co-deficient pastures, treating ewes with a long-acting Vitamin B12 supplement at mating will prevent Vitamin B12 (Co) deficiency in ewes, as well as their lambs, until they can be treated at tailing at 4-6 weeks of age.     

Multifunctional activity of vitamin E in animal and animal products: A review

Vitamin E is an essential nontoxic fat‐soluble micronutrient whose effects on livestock performance and products can be attributed to its antioxidant and nonantioxidant properties. Although it is needed in small quantity in the diet, its roles in livestock production are indispensable as it is required in boosting performance, nutritional qualities, and yield of animal and animal products. The dietary or oral supplementation of vitamin E is essential in reducing lipid oxidation in muscle, egg, and dairy products as well as lowering cholesterol concentrations and improving antioxidant status of livestock. Evidence has shown that bioavailability of vitamin E–enriched animal products could serve as an invaluable nutritional benefit to consumers; especially those in regions of limited resources where vitamin E deficiencies pose a risk that may be detrimental to some cellular activities of the body and on human health. It is therefore important to redirect research on the impact of vitamin E supplementation as antioxidant on livestock performance and animal products.     

VB_6对家蚕氮代谢的影响

用人工饲料无菌饲育方式 ,分析维生素B6(VB6)对家蚕丝腺生长、血淋巴蛋白质浓度、血淋巴游离氨基酸组成变化及氮代谢终产物尿酸形成的影响。结果表明 :5龄期家蚕在缺乏VB6条件下 ,丝腺生长严重受阻碍 ,血淋巴蛋白质不能正常合成 ,使体内氨基酸转化利用率下降 ,氮代谢终产物尿酸的排泄量增加 ,血淋巴中部分游离氨基酸浓度下降 ,特别是合成丝蛋白质主要成分的Ala、Ser和Tyr等蚕体非必需氨基酸的组成比率显著减少 ,而Gly、Orn和Cysta等的浓度增加异常 ,导致血淋巴中游离氨基酸组成动态平衡破坏 ,显示蚕体内因VB6缺乏引起氨基酸代谢失调。     

Effect of an injectable microencapsulated Vitamin B12 on serum and liver Vitamin B12 concentrations in calves

AIM: To evaluate the efficacy of a long-acting injectable microencapsulated formulation of Vitamin B12 in dairy calves. METHOD: Fifty calves, average liveweight 110kg, were randomly allocated to 5 groups of 10 animals and injected subcutaneously in the anterior neck with 0.12, 0.18, 0.24 and 0.3 mg Vitamin B12/kg liveweight using a formulation of microencapsulated Vitamin B12 in a lactide: glycolide copolymer. The untreated calves were injected with the same vehicle, without Vitamin B12. Subsequent changes in serum and liver Vitamin B12 concentrations were followed for 244 days. RESULTS: The microencapsulated Vitamin B12 significantly increased, then maintained serum and liver Vitamin B12 concentrations higher than those of untreated controls for at least 110 days. CONCLUSIONS: Injection of the microencapsulated Vitamin B12 at dose rates of 0.12 to 0.24 mg/kg liveweight will increase and maintain the Vitamin B12 status of calves for at least 110 days.     

驴奶的主要成分和价值及其在化妆品方面的应用研究进展

驴奶是纯天然乳中珍品,对人体多种器官有保健作用。驴奶不仅有较高的营养价值和药用价值,而且在护肤美容方面具有非常好的效果,是当前深受青睐的动物源性化妆品原料,因此,驴奶作为化妆品生产的功能成分原料具有广阔的开发应用前景。介绍了驴奶的主要成分、营养价值和药用价值以及在化妆品方面的应用研究进展,以期为驴奶在化妆品方面的开发应用及驴奶产业体系创造更高价值提供参考。