• 제목/요약/키워드: Biological applications

검색결과 1,056건 처리시간 0.038초

The Interaction of Polysaccharides Isolated from Auricularia Polytricha with Human Serum Albumin

  • Wang, Wei;Zhang, Guoguang;Zou, Jinmei
    • Journal of Applied Biological Chemistry
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    • 제57권1호
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    • pp.33-40
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    • 2014
  • Polysaccharides have attracted great attention for their wide range of applications in biological and medical fields. In this paper, the interaction of polysaccharides with human serum albumin (HSA) was systematically investigated by fluorescence (FL) spectroscopy and circular dichroism (CD) spectra under different conditions. The Stern-Volmer quenching constants ($K_a$) at different ionic strength and pH were calculated, and information of the structural features of HSA was discussed. FL and CD results indicate that both hydrophobic and electrostatic interactions play important roles during the binding process. The quenching of the fluorescence resulting the binding of polysaccharides and HSA is static.

Divergent Process for C10, C11 and C12 ω-Amino Acid and α,ω-Dicarboxylic Acid Monomers of Polyamides from Castor Oil as a Renewable Resource

  • Koh, Moo-Hyun;Kim, Hyeon-Jeong;Shin, Na-Ra;Kim, Hyun-Su;Yoo, Dong-Won;Kim, Young-Gyu
    • Bulletin of the Korean Chemical Society
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    • 제33권6호
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    • pp.1873-1878
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    • 2012
  • Polyamides have great potentials for diverse applications and the present production of their monomers mostly relies on resources from fossil fuel. Starting from undecylenic acid, a natural resource, we have developed both divergent and efficient processes for $C_{10}$, $C_{11}$ and $C_{12}$ ${\omega}$-amino acid and ${\alpha},{\omega}$-dicarboxylic acid monomers of the polyamides.

Bioactive Lipids and Their Derivatives in Biomedical Applications

  • Park, Jinwon;Choi, Jaehyun;Kim, Dae-Duk;Lee, Seunghee;Lee, Bongjin;Lee, Yunhee;Kim, Sanghee;Kwon, Sungwon;Noh, Minsoo;Lee, Mi-Ock;Le, Quoc-Viet;Oh, Yu-Kyoung
    • Biomolecules & Therapeutics
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    • 제29권5호
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    • pp.465-482
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    • 2021
  • Lipids, which along with carbohydrates and proteins are among the most important nutrients for the living organism, have a variety of biological functions that can be applied widely in biomedicine. A fatty acid, the most fundamental biological lipid, may be classified by length of its aliphatic chain, and the short-, medium-, and long-chain fatty acids and each have distinct biological activities with therapeutic relevance. For example, short-chain fatty acids have immune regulatory activities and could be useful against autoimmune disease; medium-chain fatty acids generate ketogenic metabolites and may be used to control seizure; and some metabolites oxidized from long-chain fatty acids could be used to treat metabolic disorders. Glycerolipids play important roles in pathological environments, such as those of cancers or metabolic disorders, and thus are regarded as a potential therapeutic target. Phospholipids represent the main building unit of the plasma membrane of cells, and play key roles in cellular signaling. Due to their physical properties, glycerophospholipids are frequently used as pharmaceutical ingredients, in addition to being potential novel drug targets for treating disease. Sphingolipids, which comprise another component of the plasma membrane, have their own distinct biological functions and have been investigated in nanotechnological applications such as drug delivery systems. Saccharolipids, which are derived from bacteria, have endotoxin effects that stimulate the immune system. Chemically modified saccharolipids might be useful for cancer immunotherapy or as vaccine adjuvants. This review will address the important biological function of several key lipids and offer critical insights into their potential therapeutic applications.

Applications of Microfluidics in the Agro-Food Sector: A Review

  • Kim, Giyoung;Lim, Jongguk;Mo, Changyeun
    • Journal of Biosystems Engineering
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    • 제41권2호
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    • pp.116-125
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    • 2016
  • Background: Microfluidics is of considerable importance in food and agricultural industries. Microfluidics processes low volumes of fluids in channels with extremely small dimensions of tens of micrometers. It enables the miniaturization of analytical devices and reductions in cost and turnaround times. This allows automation, high-throughput analysis, and processing in food and agricultural applications. Purpose: This review aims to provide information on the applications of microfluidics in the agro-food sector to overcome limitations posed by conventional technologies. Results: Microfluidics contributes to medical diagnosis, biological analysis, drug discovery, chemical synthesis, biotechnology, gene sequencing, and ecology. Recently, the applications of microfluidics in food and agricultural industries have increased. A few examples of these applications include food safety analysis, food processing, and animal production. This study examines the fundamentals of microfluidics including fabrication, control, applications, and future trends of microfluidics in the agro-food sector. Conclusions: Future research efforts should focus on developing a small portable platform with modules for fluid handling, sample preparation, and signal detection electronics.