鱼皮的硫酸多糖的结构性,功能性和生物活性特性,作为干燥技术的功能
Shahab Naghdi1, Masoud Rezaei1, Mehdi Alboofetileh2
1Seafood Processing Department Marine Sciences Faculty Tarbiat Modares University Noor 46414-356 Iran.
Global challenges (Hoboken, NJ)
|November 15, 2024
概括
干燥方法显著影响鱼皮中的硫酸多糖 (SP). 冷干燥产生最好的抗氧化特性,而微波和热空气干燥增强其他功能.
科学领域:
- 海洋生物技术 海洋生物技术
- 食品科学与技术 食品科学与技术
- 生物化学 生物化学
背景情况:
- 鱼皮是有价值的硫酸多糖 (SP) 的潜在来源.
- 干燥技术对于保持提取的SP的质量和生物活性至关重要.
- 了解不同干燥方法的影响对于优化SP应用至关重要.
研究的目的:
- 评估微波,冷干燥和热空气干燥对从Skipjack金枪鱼皮中提取的SP质量的影响.
- 通过不同的干燥方法获得的SP的提取产量,化学成分,结构特性和生物活性进行比较.
主要方法:
- 从Skipjack金枪鱼皮中提取硫酸多糖 (SP).
- 使用三种干燥技术:微波干燥 (M-KPP),冷干燥 (F-KPP) 和热空气干燥 (HA-KPP).
- 提取产量,水分含量,化学成分,单糖化合物成分,结构性质 (FTIR,XRD,DSC),抗氧化活性和功能/抗菌活性的分析.
主要成果:
- 提取产量有很大的不同 (M-KPP:3.30%,F-KPP:3.11%,HA-KPP:2.50%).
- 热空气干燥 (HA-KPP) 导致水分含量最低 (10.67%).
- 冷干燥 (F-KPP) 产生了具有最高抗氧化特性的SP,而热空气干燥提高了发泡能力和微波干燥改善了抗菌活性. 结构性质在各种方法中保持一致.
结论:
- 干燥技术极大地影响了金枪鱼皮的功能和生物活性概况.
- 选择最佳的干燥方法取决于预期的应用和所需的SP特性.
- 进一步的研究可以利用这些发现来针对性地生产和利用SP.
相关概念视频
Dehydration Synthesis
Dehydration synthesis (also called a condensation reaction) is the chemical process in which two molecules covalently link together to form a new molecule, along with the release of a water molecule. Many physiologically important compounds form by dehydration synthesis reactions, such as complex carbohydrates, proteins, DNA, and RNA.Synthesis of carbohydratesSugar molecules are covalently linked together by dehydration synthesis. During the reaction, the hydroxyl (-OH) group from one reactant...
Protein and Protein Structure
Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective. They may serve in transport, storage, or membranes; or they may be toxins or enzymes. Their structures, like their functions, vary greatly. They are all, however, amino acid polymers arranged in a linear sequence.
A protein's shape is critical to its function. For example, an enzyme can...
A protein's shape is critical to its function. For example, an enzyme can...
What are Proteins?
Proteins are polymers of amino acids linked together by peptide bonds. Proteins and polypeptides are interchangeably used to refer to long chains of amino acids. However, polypeptides have a molecular weight of fewer than 10,000 daltons, while proteins have greater molecular weight. Polypeptides with less than 20 amino acids are called oligopeptides or simply peptides. Interactions among the constituent amino acid side chains of proteins help them fold into a stable 3-dimensional structure...
Structural Protein Function
Structural proteins are a category of proteins responsible for functions ranging from cell shape and movement to providing support to major structures such as bones, cartilage, hair, and muscles. This group includes proteins such as collagen, actin, myosin, and keratin.
Collagen, the most abundant protein in mammals, is found throughout the body. In connective tissue, such as skin, ligaments, and tendons, it provides tensile strength and elasticity. In bones and teeth, it mineralizes to form...
Collagen, the most abundant protein in mammals, is found throughout the body. In connective tissue, such as skin, ligaments, and tendons, it provides tensile strength and elasticity. In bones and teeth, it mineralizes to form...
Preparation of Samples for Electron Microscopy
To be visualized by an electron microscope, either transmission or scanning, biological samples need to be fixed (stabilized) so the electron beam does not destroy them and dried thoroughly (desiccated/dehydrated) so the vacuum does not affect them. Fixation needs to be done as quickly as possible because the sample properties will start changing as soon as it is removed from its natural environment. For example, in a tissue sample, the oxygen levels begin decreasing, causing an altered...
Drying Shrinkage
When hardened concrete is exposed to air with a relative humidity of less than 100 percent, it begins to lose the free water within its capillaries. As this water evaporates, the water initially adsorbed onto the calcium silicate hydrates migrates towards these now empty spaces and eventually evaporates as well. Over time, as more water leaves, the volume of the concrete decreases, a phenomenon known as drying shrinkage.
A portion of this drying shrinkage can be reversed; if the concrete is...
A portion of this drying shrinkage can be reversed; if the concrete is...


