蛋清源生物活性肽功能及其构效关系研究进展
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华中农业大学食品科学技术学院

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国家自然科学基金项目(面上项目,重点项目,重大项目)


Biological function and structure-activity relationships of bioactive peptides derived from duck and chicken egg white proteins: A review
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    摘要:

    禽蛋为人类提供了丰富的营养物质,如蛋白质、脂质和维生素等,蛋清蛋白不仅具有许多需宜的加工功能性质,通过酶法制备获得的蛋清肽还具有丰富的生物活性。本文以鸭蛋蛋清蛋白和鸡蛋蛋清蛋白为对象,对蛋清肽的主要生物学功能如降血压、抗氧化、促进矿物质吸收、降血糖、调节肠道健康等进行了综述,并对其活性-结构关系进行了探讨,发现蛋清源血管紧张素转化酶(angiotensin-converting enzyme,ACE)抑制肽C端为脯氨酸、亮氨酸,N端为芳香族氨基酸或碱性氨基酸时均会影响其ACE抑制活性;蛋清源抗氧化肽N端含有疏水性氨基酸,一级结构中含有芳香族氨基酸则会大大提高肽段的抗氧化能力;蛋清源促钙吸收肽C端第一位为谷氨酸、序列中丝氨酸的磷酸化对于促钙吸收具有重要贡献。然而,通过水解得到的蛋清源生物活性肽往往具有不同的生物活性,产量较低、结构差异较大,难以获得普适的构效关系结论。因此,本文旨在为蛋清蛋白的高值化利用,即将蛋清源生物活性肽用作营养补充剂、功能性保健品和治疗药物提供理论依据,并为生物活性肽的研究提出新的展望。

    Abstract:

    Eggs provide various of nutrients for human beings, such as proteins, lipids, and vitamins. Besides of the processing properties from egg white, bioactive peptides obtained by the enzymatic hydrolysis method have diversiform biological functions. In this paper, biological functions such as of anti-oxidation, prevention of cardiovascular diseases, promoting mineral absorption, anti-diabetes, and regulating intestinal health were summarized, and the structure-activity relationships of egg white peptides from duck egg and chicken egg were also reviewed. It was found that egg white-derived angiotensin-converting enzyme (ACE) inhibitory peptides could affect their ACE inhibitory activity when the C-terminal was proline, leucine, and the N-terminal was aromatic or alkaline amino acid. Hydrophobic amino acids in N-terminal, and aromatic amino acids in the primary structure of antioxidant peptides from egg white can greatly improve the antioxidant capacity of the peptides. Glutamic acid in the first C-terminal, and phosphorylation of serine in the sequence of egg white-derived calcium absorption peptides have important contributions to the calcium absorption. However, bioactive peptides obtained by hydrolysis were confirmed to have different bioactivities, low yield and significantly different structures, making it difficult to obtain universal structure-activity relationship conclusions. Thus, the purpose of this paper is to provide a basis for the high-valued utilization of egg white, and a certain application for the production of egg white bioactive peptides as nutritional supplements, functional nutritional health products and therapeutic drugs, as well as to put forward a new prospect for the research of bioactive peptides.

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  • 收稿日期:2020-05-22
  • 最后修改日期:2020-06-29
  • 录用日期:2020-07-15
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