Details

Autor(en) / Beteiligte

• Chao Song, Zhi
• Zhang, Huan
• Fei Niu, Peng
• Shi, Lin Shan
• Yan Yang, Xue
• Hong Meng, Yong
• Yu Wang, Xiao
• Gong, Tian
• Rong Guo, Yu

Titel

Fabrication of a novel antioxidant emulsifier through tuning the molecular interaction between soy protein isolates and young apple polyphenols

Ist Teil von

• Food chemistry, 2023-09, Vol.420, p.136110-136110, Article 136110

Ort / Verlag

England: Elsevier Ltd

Erscheinungsjahr

2023

Quelle

MEDLINE

Beschreibungen/Notizen

• [Display omitted] •Soy protein-young apple polyphenol complexes are potential antioxidant emulsifiers.•YAP bound to SPI mainly by hydrogen bonding and hydrophobic interaction.•YAP improved the antioxidant and emulsifying properties of SPI.•YAP induced the unfolding of SPI’ native structure.•OH groups' number and location decided SPI-YAP complexes’ antioxidant capacity. Soy protein isolates (SPI) exhibit weaker emulsifying properties than those of animal proteins, thereby limiting their wide applicability. In this study, a novel plant-based antioxidant emulsifier was developed using SPI and young apple polyphenols (YAP), and its underlying interaction mechanisms were discovered using multispectral technology and molecular docking. YAP physically bound to SPI through hydrogen bonds and hydrophobic interactions, which significantly enhanced the free radicals scavenging, reducing, and metal ion chelating abilities of SPI by introducing free hydroxyl groups. Moreover, SPI modified by YAP exerted better emulsifying performance owing to a looser protein structure, reflected by a higher random coil and a lower α-helix content. In addition, YAP may bridge adjacent SPI molecules, promoting the adsorption and anchoring of SPI at the oil–water interface. SPI-YAP complexes are promising antioxidant emulsifiers that can be used to nano-deliver functional oils and nutrients, thereby broadening SPI and YAP applications in the food industry.