中草药多糖免疫调节剂研究进展   总被引：4，自引：0，他引：4  

高海  李秀岚 《动物医学进展》2003,24(5):55-57

中草药多糖是增强机体免疫的物质基础 ,对促进和恢复机体免疫机能的作用极为明显。它的重要性正引起广泛关注。文章主要从中草药多糖的研究状况、开发应用及存在问题等方面进行了探讨 ,对于进一步了解中草药多糖在生理和病理过程中的作用及其免疫调节机制有一定意义  相似文献   

反刍动物肽营养研究进展     

张香斋  李成会 《中国饲料》2005,(12):22-24

本文综述了反刍动物肽的吸收特点及影响因素,肽的吸收代谢机制,肽对瘤胃微生物的调控及对反刍动物生产性能发挥的作用,以及饲料蛋白源活性肽的开发应用。  相似文献   

花粉多糖注射剂质量标准中几个项目测定     

王开发  支崇远  陆明 《蜜蜂杂志》2004,(3):3-4

根据中国药典对注射剂的要求,对花粉多糖的蛋白质、鞣质、树脂、草酸盐、炽灼残渣、钾离子、砷盐、重金属含量进行测定,均符合规定,达到质量标准。  相似文献   

Biochemical proximates of pumpkin (Cucurbitaeae spp.) and their beneficial effects on the general well‐being of poultry species          下载免费PDF全文

M. C. Achilonu  I. C. Nwafor  D. O. Umesiobi  M. M. Sedibe 《Journal of animal physiology and animal nutrition》2018,102(1):5-16

There is a growing need to increase productivity in poultry. Growth hormones and antibiotics have the ability to improve health, weight gain and feed efficiency in meat‐producing animals. The growth‐promoting antibiotics are administered to poultry to improve the general performance of the chicken. However, the use of the xenobiotic drugs in food‐producing animals has been a concern and a sensitive issue of debate for several decades in the EU and many other regional blocks of the world. Consequently, the use of hormones in animal production has been banned in Italy, Denmark and Germany for over 4–5 decades, while Belgium and Greece had never permitted its use for livestock fattening purposes. Bioactive phytochemicals exhibit antimicrobial, antioxidant, antiparasitic, antiprotozoal, antifungal and anti‐inflammatory properties and consequently have several beneficial effects on appetite, growth and the immune status of the animal. In South Africa, different species of pumpkin are produced for food due to their high nutrient content. The flesh serves as a traditional food, while the seeds and peels are commonly discarded. Pumpkin seed extract is reported to be useful for immunomodulation, reproductive health, therapeutics over a wide range of disease conditions and stimulates metabolism of accumulated fats. Studies have also shown that pumpkin seeds are a valuable source of protein and fat. Their complexity and extent of bioactivity offers sustainable prospects for natural control of pathogenic/parasitic organisms, stimulate nutrition or enhance resistance to disease infections, and reduce abdominal fat and serum levels of harmful lipids, while increasing serum levels of beneficial lipids.  相似文献   

Processing traits and digestibility of extruded dog foods with soy protein concentrate          下载免费PDF全文

K. S. Venturini  M. F. Sarcinelli  M. A. Baller  T. C. Putarov  E. B. Malheiros  A. C. Carciofi 《Journal of animal physiology and animal nutrition》2018,102(4):1077-1087

Soya bean protein concentrate (SPC) with two particle sizes were evaluated on extrusion parameters, kibble formation, digestibility and palatability of dog foods. Eight diets were extruded: PBM—control diet based on poultry by‐product meal (PBM); GM—a diet in which corn gluten meal (GM) replaced 45% of the diet protein; cSPC15%, cSPC30% and cSPC45%—diets in which SPC of coarse particle size (600 μm) replaced 15%, 30% and 45% of the diet protein; and sSPC15%, sSPC30% and sSPC45%—diets in which SPC of small particle size (200 μm) replaced 15%, 30% and 45% of the diet protein. The digestibility of nutrients was evaluated for the PBM, GM, cSPC45% and sSPC45% diets, using six dogs per food. The PBM, GM and cSPC45% diets were compared for palatability. Data were submitted for analysis of variance, and the means were compared by polynomial contrasts or Tukey's test (p < .05). The cSPC increased the specific mechanical energy (SME) application, extrusion temperature and pressure linearly, resulting in lower kibble density and higher expansion and starch gelatinization (SG) (p < .01). When comparing the PBM, GM, cSPC45% and sSPC45% diets, higher SME, extrusion temperature and pressure, SG and kibble expansion were verified for the cSPC45% diet (p < .05). The DM, fat and crude protein digestibility were similar among diets. Faecal pH, ammonia and lactate did not differ, demonstrating that the removal of oligosaccharides and soluble non‐starch polysaccharides of SPC produces an ingredient with mostly non‐fermentable fibre. Dogs preferred the PBM to the GM diet (p < .05), but consumed the PBM and cSPC45% foods equally. In conclusion, SPC exhibited good extrusion functionality, favouring kibble expansion and SG, with high digestibility, similar to that of PBM. The removal of soluble compounds from soya beans resulted in an ingredient with low fermentable fibre content, which did not alter faecal formation or characteristics.  相似文献   

多糖提取及对家禽生长、免疫和产蛋性能影响研究进展     

欧蜀云  欧永春  姚长红 《饲料研究》2021,(4):141-143

多糖是由多个单糖通过糖苷键结合而成的高分子化合物。食用菌及植物的组织中均存在丰富的天然多糖类物质。多糖具有抗氧化、提高免疫力、改善肠道健康等多种生理功能,作为功能性添加剂在饲料中被广泛应用。文章对多糖的提取方法及对家禽生长、免疫、产蛋性能影响进行综述,为进一步获取优质多糖及在饲料中的应用提供参考。  相似文献   

6种大孔树脂对复方免疫增强剂多糖的吸附解吸性能     

李赞阳  李炳奇  刘红  龚晓武  谷新利 《西北农业学报》2011,20(12):16-18

筛选出对中药复方免疫增强剂多糖具有较好的吸附解吸效果的大孔树脂。通过静态吸附及解吸试验、动态吸附及解吸试验，利用苯酚 硫酸法跟踪检测多糖质量浓度，以吸附率与解吸率为评价指标，初步研究AB 8、LSA 5B、DM 18、CAD 40、LX 1、D941型大孔树脂对中药复方免疫增强剂中多糖的吸附及解吸性能。结果表明，在6种大孔树脂中， AB 8对中药复方免疫增强剂多糖的动态吸附率和解吸率最高，分别为54%和90%。说明AB 8型大孔树脂可以作为分离纯化多糖的材料。  相似文献   

Salt Effect on the Antioxidant Activity of Red Microalgal Sulfated Polysaccharides in Soy-Bean Formula     

Ariela Burg  Levy-Ontman Oshrat 《Marine drugs》2015,13(10):6425-6439

Sulfated polysaccharides produced by microalgae, which are known to exhibit various biological activities, may potentially serve as natural antioxidant sources. To date, only a few studies have examined the antioxidant bioactivity of red microalgal polysaccharides. In this research, the effect of different salts on the antioxidant activities of two red microalgal sulfated polysaccharides derived from Porphyridium sp. and Porphyridium aerugineum were studied in a soy bean-based infant milk formula. Salt composition and concentration were both shown to affect the polysaccharides’ antioxidant activity. It can be postulated that the salt ions intefer with the polysaccharide chains’ interactions and alter their structure, leading to a new three-dimensional structure that better exposes antiooxidant sites in comparison to the polysaccharide without salt supplement. Among the cations that were studied, Ca²⁺ had the strongest enhancement effect on antioxidant activities of both polysaccharides. Understanding the effect of salts on polysaccharides’ stucture, in addition to furthering knowledge on polysaccharide bioactivities, may also shed light on the position of the antioxidant active sites.  相似文献   

仙草多糖提取工艺条件优化研究     

林慧霞  肖玉娟  黄华斌  傅奇  何少贵 《热带作物学报》2016,(4):22-26

采用水提法浸提仙草，以仙草多糖的提取率为指标，研究料液比、浸提温度、浸提时间及浸提次数4个因素对其提取率的影响，并从中挑取合适的因素水平进行正交试验及SPSS分析。结果表明：在这4个因素中，对提取率影响最大的因素是浸提温度，然后是浸提时间，再次是料液比，最后是浸提次数；在料液比1:60、温度100 ℃、浸提时间3 h的最优条件下，仙草多糖的提取率高达17.89 %，此时仙草多糖的含量为44.13 %。  相似文献   

Marine-Derived Secondary Metabolites as Promising Epigenetic Bio-Compounds for Anticancer Therapy     

Mariarosaria Conte  Elisabetta Fontana  Angela Nebbioso  Lucia Altucci 《Marine drugs》2021,19(1)

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