Xi Chuyu, Li Wenjie, Xu Zhiguo, Xie Jing, Gao Xiaoyu, Feng Dan, Tian Yang, Song Shuang
College of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, China.
Yunnan Key Laboratory of Precision Nutrition and Personalized Food Manufacturing, Yunnan Agricultural University, Kunming 650201, China.
Int J Mol Sci. 2025 Feb 14;26(4):1647. doi: 10.3390/ijms26041647.
leaves represent a novel and nutritious food. Prior research has demonstrated that leaves can elicit allergic responses in BALB/c mice. Based on these findings, further studies were conducted to investigate the effects of heat treatment on the allergenicity, particle size, zeta potential, total sulfhydryl (TSH) content, hydrophilicity and hydrophobicity, ultraviolet spectrum, and intrinsic fluorescence spectrum of leaf protein. Additionally, in vitro digestion experiments were carried out to gain further insights into the protein's behavior under these conditions. The experiment simulated the alterations in leaf protein during the processes of cooking and digestion. The findings of this experiment can provide certain guidance for the processing of leaf products. The hydrophilicity, hydrophobicity, transmembrane region, antigen index, calcium binding site, spatial structure, and homology of leaf fructose 1,6 bisphosphate aldolase (FBA) were simulated and calculated based on the amino acid sequence of the 36 kDa allergen. These parameters collectively serve to indicate the allergenic activity of the peptide. The findings of the analysis align with the outcomes of the sensitization experiments, suggesting that the FBA of leaves is indeed consistent. In conjunction with the heat treatment experiments, this research can inform the preparation of leaf foods and provide a foundation for further investigation into leaf allergens.
树叶代表一种新颖且营养丰富的食物。先前的研究表明,树叶可在BALB/c小鼠中引发过敏反应。基于这些发现,开展了进一步的研究,以探究热处理对树叶蛋白的致敏性、粒径、zeta电位、总巯基(TSH)含量、亲水性和疏水性、紫外光谱以及内在荧光光谱的影响。此外,还进行了体外消化实验,以进一步了解该蛋白在这些条件下的行为。该实验模拟了树叶蛋白在烹饪和消化过程中的变化。本实验的结果可为树叶产品的加工提供一定指导。基于36 kDa过敏原的氨基酸序列,模拟并计算了树叶果糖1,6-二磷酸醛缩酶(FBA)的亲水性、疏水性、跨膜区域、抗原指数、钙结合位点、空间结构和同源性。这些参数共同用于指示该肽的致敏活性。分析结果与致敏实验结果一致,表明树叶的FBA确实相符。结合热处理实验,本研究可为树叶食品的制备提供参考,并为进一步研究树叶过敏原奠定基础。