Study on the Analysis of the Relationship Between Functional Factors and Intestinal Flora in Freshly Stewed Bird's Nest Based on Fourier Transform Infrared Spectroscopy
ZHANG Xiao-xu1, LIN Xiao-xian3, ZHANG Dan2, ZHANG Qi1, YIN Xue-feng2, YIN Jia-lu3, 4, ZHANG Wei-yue4, LI Yi-xuan1, WANG Dong-liang3, 4*, SUN Ya-nan1*
1. Department of Nutrition and Health, China Agricultural University, Beijing 100193, China
2. College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
3. Beijing Xiaoxiandun Biotechnology Co., Ltd., Beijing 100020, China
4. Hebei Edible Bird's Nest Fresh Stew Technology Innovation Center, Langfang 065700, China
Abstract：Eating bird's nest （EBN）can regulate intestinal flora and improve human immunity. Excavating the key nutrients and effective functional groups in fresh stewed bird's nest （FSBN）can lay a research foundation for exploring the mechanism of bird's nest regulating intestinal flora. The functional groups and material composition of the two brands of FSBN products were analyzed by Fourier Transform Infrared Spectroscopy (FTIR) and high-resolution mass spectrometry (HRMS), respectively. In order to explore the effective functional groups and key regulatory substances in the regulation of intestinal flora after eating FSBN, the relationship between FTIR and HRMS results and the abundance of intestinal flora in C57BL/6N mice was established by correlation analysis. The results showed that after taking FSBN, the intestinal bacteria that differ greatly in the species level are as follows: beneficial bacteria Lactobacillus and Lachnospiraceae_NK4A136_group showed an upward trend, beneficial bacteria Faecalibaculumand Akkermansia showed a downward trend, and harmful bacteria Desulfovibrio, Enterorhabdus and Candidatus_Saccharimonas showed a downward trend. The infrared difference spectra of the two products were mainly concentrated in the 1 700～1 200 cm-1 band, which were mainly the distribution areas of the amide bond, aromatic CC and carboxylic acid CO group. These functional groups were positively correlated with beneficial bacteria Lactobacillus and Lachnospiraceae_NK4A136_group and negatively correlated with harmful bacteria Desulfovibrio and Enterorhabdus. After analysing small molecular substances in FSBN by metabolomics, it was found that the main components were amino acids, lipids, esters and sialic acids, which showed different correlations with intestinal bacteria. Generally speaking, lipids, especially some phosphate esters (Phosphate, Phosphatidylcholine, Phosphatidylethanolamine and Phosphatidylglycerol) and fatty acyl showed extremely significant negative correlation with harmful bacteria and a positive correlation with beneficial bacteria. The characteristic groups in these substances can also correspond to the FTIR results. The above results show that both Fourier transform infrared spectroscopy and metabolomics can provide a theoretical basis for studying nutrients on the regulation of intestinal flora.
张晓旭，林小仙，张 丹，张 琪，尹雪峰，阴佳璐，张维悦，李依璇，王东亮，孙亚楠. 基于傅里叶变换红外光谱技术解析鲜炖燕窝中功能因子与肠道菌群的关系[J]. 光谱学与光谱分析, 2023, 43(08): 2452-2457.
ZHANG Xiao-xu, LIN Xiao-xian, ZHANG Dan, ZHANG Qi, YIN Xue-feng, YIN Jia-lu, ZHANG Wei-yue, LI Yi-xuan, WANG Dong-liang, SUN Ya-nan. Study on the Analysis of the Relationship Between Functional Factors and Intestinal Flora in Freshly Stewed Bird's Nest Based on Fourier Transform Infrared Spectroscopy. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(08): 2452-2457.
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