リン酸化サケ骨ポリペプチド:亜鉛キレートによる安定性と抗菌活性の向上
Lingyu Han1, Nuo Dong1, Bing Hu1
1Key Lab of Biotechnology and Bioresources Utilization of Ministry of Education, College of Life Science, Dalian Minzu University, Dalian, Liaoning 116600, China.
Food chemistry: X
|December 24, 2025
まとめ
サケ骨ペプチドをリン酸化し、亜鉛とキレート化して、安定した生理活性サプリメントを作成しました。この新しい亜鉛サプリメントは抗菌特性を示し、食品加工での経口摂取に安全です。
科学分野:
- 海洋バイオテクノロジー
- 生体材料科学
- 栄養生化学
背景:
- サケ骨は、未開発の生理活性ポテンシャルを持つ貴重な海洋廃棄物ストリームを表します。
- リン酸化および金属キレート化は、生体分子の機能特性を向上させることができます。
研究 の 目的:
- 亜リン酸化サケ骨ペプチドと亜鉛(P-SBPs-Zn)をキレート化して開発および特性評価を行うこと。
- P-SBPs-Znの安定性、消化性、抗菌活性、および安全性を食品用途への応用可能性について評価すること。
主な方法:
- サケ骨ペプチド(SBP)を様々なpHでリン酸化しました。
- フーリエ変換赤外分光法、蛍光分光法、CD分光法を用いた構造解析。
- 亜鉛キレート効率、安定性、消化性、抗菌活性、および細胞安全性評価を実施しました。
主要な成果:
- pH 4(P-SBPs4-Zn)でのホスホペプチド-亜鉛キレートは、優れた溶解性と亜鉛結合能(86.15 ± 0.47 mg/g 亜鉛)を示しました。
- P-SBPs4-Znは、模擬消化管内条件下で優れた安定性と消化性を示しました。
- 膜破壊に起因する大腸菌および黄色ブドウ球菌に対する有意な抗菌効果が観察されました。
- 安全性評価により、Caco-2およびRAW 264.7細胞との生体適合性が確認されました。
結論:
- P-SBPs4-Znは、海洋廃棄物由来の非常に効果的で安定した生体適合性の高い亜鉛サプリメントです。
- この新しいホスホペプチド-亜鉛複合体は、食品加工における抗菌剤および機能性成分としての可能性を示しています。
関連する概念動画
Essential Minerals for Bone Health
5.9K
The minerals contained in all of the food we consume are essential for our organ systems. However, certain essential minerals, such as calcium, phosphorus, magnesium, manganese, and fluoride, largely affect bone health.
Calcium and Phosphorus
Calcium is a critical component of bones, especially in the form of calcium phosphate and calcium carbonate. Since the body cannot make calcium, it must be obtained from the diet. However, calcium cannot be absorbed from the small intestine without...
Calcium and Phosphorus
Calcium is a critical component of bones, especially in the form of calcium phosphate and calcium carbonate. Since the body cannot make calcium, it must be obtained from the diet. However, calcium cannot be absorbed from the small intestine without...
5.9K
Phosphorylation
53.5K
The addition or removal of phosphate groups from proteins is the most common chemical modification that regulates cellular processes. These modifications can affect the structure, activity, stability, and localization of proteins within cells as well as their interactions with other proteins.
During phosphorylation, protein kinases transfer the terminal phosphate group of ATP to specific amino acid side chains of substrate proteins. Serine, threonine, and tyrosine are the most commonly...
During phosphorylation, protein kinases transfer the terminal phosphate group of ATP to specific amino acid side chains of substrate proteins. Serine, threonine, and tyrosine are the most commonly...
53.5K
Other Stress Responses in Bacteria
310
Bacteria have global regulatory systems that control several types of stress mechanisms. These include Pho regulon and the heat shock response, which are essential systems for environmental adaptation, such as nutrient limitation and proteotoxic stress. The Pho regulon and the heat shock response exemplify bacterial resilience, enabling rapid adaptation to fluctuating environmental conditions.Pho RegulonBacteria require phosphorus for essential cellular processes, including nucleic acid...
310
Bacterial Protein Maturation
409
Bacterial protein maturation is a tightly regulated process that ensures newly synthesized polypeptides achieve correct functional conformations. This maturation involves a series of modifications, folding events, and quality control steps, often assisted by specialized chaperone proteins.N-Terminal ModificationsThe maturation of bacterial polypeptides begins cotranslationally as the polypeptide exits the ribosome. The first amino acid, N-formylmethionine (fMet), is typically modified at the...
409
Antimicrobial Proteins
12.9K
Antimicrobial proteins are important components of the immune system. They aid the body in combating pathogens by either killing them directly or hindering their replication processes. Four main types of antimicrobial substances are interferons, the complement system, iron-binding proteins, and antimicrobial proteins.
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
12.9K
Protein Kinases and Phosphatases
14.8K
Proteins undergo chemical modifications that trigger changes in the charge, structure, and conformation of the proteins. Phosphorylation, acetylation, glycosylation, nitrosylation, ubiquitination, lipidation, methylation, and proteolysis are various protein modifications that regulate protein activity. Such modifications are usually enzyme-driven.
Protein kinases
Many proteins in the cell are regulated by phosphorylation, the addition of a phosphate group. A family of enzymes called kinases...
Protein kinases
Many proteins in the cell are regulated by phosphorylation, the addition of a phosphate group. A family of enzymes called kinases...
14.8K


