Xem 1-10 trên 10 kết quả Carbohydrate polymers
  • Tuy nhiên, sự sắp xếp của các nguyên tử trong carbohydrates có ít để làm với các phân tử nước. Tinh bột và cellulose là hai carbohydrates chung. Cả hai đều là các đại phân tử với trọng lượng phân tử trong hàng trăm ngàn. Cả hai đều là polyme (vì thế " polysaccharides "), có nghĩa là, từng được xây dựng từ các đơn vị lặp đi lặp lại, monome , giống như một chuỗi được xây dựng từ các liên kết của nó. Các monome của cả hai tinh bột và cellulose đều giống nhau: đơn...

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  • To evaluate the immune activation and reactive oxygen species scavenging activity of Cordyceps militaris polysaccharides (CMP) in vivo, 90 male BALB/c mice were randomly divided into six groups. The mice in the three experimental groups were given cyclophosphamide at 80 mg/kg/d via intraperitoneal injection and 17.5, 35, or 70 mg/kg body weight CMP via gavage. The lymphocyte proliferation, phagocytic index, and biochemical parameters were measured.

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  • Cordyceps gunnii (berk.) Berk (C. Gunnii) is well known as a Chinese rare caterpillar fungus and has similar pharmacological activity with C. sinensis. In this work, a high-molecular-weight polysaccharide (CPS) was isolated and purified from the mycelia of C. gunnii. The total sugar content of CPS was amounted to 92.84%. The result of HPLC indicated that CPS was a homogeneous polysaccharide. The estimated average molecular weight of CPS was 3.72 ×106 Da. The specific rotation of CPS was recorded [˛]25 D = +134.2◦.

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  • Optimal conditions for the extraction of black fungus polysaccharides were 350 W, 5, 35 min and 90 ◦C, for ultrasonic power, ratio of water to sample, extraction time and extraction temperature, respectively. Gas chromatography (GC) analysis showed that black fungus polysaccharides contained glucose, xylose, mannose and ribose. Their molar percentages were 6.8%, 34.2%, 50.7% and 8.9%, respectively. FT-IR and NMR analysis showed typical chemical structure of black fungus polysaccharides.

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  • Analysis was conducted on all nutrients or nutrient groups for which numeric data were provided in at least 10 of the 137 crop studies that reported comparisons between organic and conventional crops (see Appendix 10).

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  • The water-soluble crude polysaccharides obtained from the liquid culture broth of Cordyceps militaris by ethanol precipitation were fractionated by DEAE cellulose and Sepharose CL-6B column chromatography. This fractionation process resulted in three polysaccharide fractions that were termed CPSN Fr I, CPSN Fr II, and CPSN Fr III. Of the fractions, CPSN Fr II was able to upregulate the functional events mediated by activated macrophages, such as production of nitric oxide (NO) and expression of cytokines (IL-1 and TNF-).

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  • The water soluble crude polysaccharide obtained from cultured mycelia of Cordyceps militaris (CPM) by hot water extraction followed by ethanol precipitation was fractionated by DEAE cellulose and Sepharose CL-6B column chromatography. This fractionation process resulted in four polysaccharide fractions that were termed CPMN Fr I, CPMN Fr II, CPMN Fr III, and CPMN Fr IV. Of these fractions, CPMN Fr III was able to upregulate the functional events mediated by activated macrophages, such as production of nitric oxide (NO) and expression of cytokines (IL-1b and TNF-a).

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  • Dextrin là một nhóm các phân tử thấp trọng lượng carbohydrate được sản xuất bởi sự thủy phân của tinh bột hoặc glycogen . Dextrin là hỗn hợp của polymer của D- glucose đơn vị liên kết bởi α-(1,4) hoặc α-(1 , 6) glycosidic trái phiếu

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  • Nguồn thức ăn cung cấp năng lượng cho lợn và gia cầm chủ yếu là ngũ cốc và phụ phẩm của ngũ cốc. Ngoài protein, lipid, chất dinh dưỡng cung cấp năng lượng chủ yếu của ngũ cốc và phụ phầm là carbohydrate. Tổng carbohydrate thực vật bao gồm: polysaccharide không phải tinh bột (non starch polysacharide: NSP), lingin và tinh bột. Nhóm NSP bao gồm cellulose, non-cellulosic polymers và pectic polysaccharides.

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  • After completing this chapter, students will be able to: Know what are the most abundant elements in biological systems; know the structures of the commonly occurring organic compounds, functional groups and linkages found in biochemical compounds; know the monomer, polymer and supramolecular structural relationships of lipids, proteins, nucleic acids, and carbohydrates; know the major differences between a prokaryotic and eukaryotic cell; know the major functions associated with the different organelles and cellular compartments of eukaryotic cells.

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