Effect of Ultrahigh-Pressure on the Physicochemical Properties and Biological Activities of Dietary Fiber From Litchi Pomace
文献类型： 外文期刊
作者： Zuo, Yun-Hui 1 ; Xu, Yu-Juan 1 ; Wu, Ji-Jun 1 ; Wen, Jing 1 ; Zou, Bo 1 ; Li, Lu 1 ; Peng, Jian 1 ; Cheng, Li-Na 1 ; Bu, Zhi-Bin 1 ; Yu, Yuan-Shan 1 ; Hu, Teng-Gen 1 ;
作者机构： 1.Guangdong Acad Agr Sci, Minist Agr & Rural Affairs, Sericultural & Agrifood Res Inst, Guangdong Key Lab Agr Prod Proc,Key Lab Funct Food, Guangzhou, Guangdong, Peoples R China
2.South China Univ Technol, Sch Food Sci & Engn, Guangzhou, Guangdong, Peoples R China
3.Guangdong Lab Lingnan Modern Agr, Heyuan Branch, Heyuan, Guangdong, Peoples R China
4.Guangdong Lab Lingnan Modern Agr, Maoming Branch, Maoming 525000, Guangdong, Peoples R China
关键词： biological activities; litchi pomace soluble dietary fiber; physicochemical properties; ultrahigh-pressure
期刊名称：JOURNAL OF FOOD SCIENCE （ 影响因子：3.4； 五年影响因子：4.1 ）
ISSN： 0022-1147
年卷期： 2025 年 90 卷 6 期
页码：
收录情况： SCI
摘要： This study primarily investigated the effects of ultra-high pressure (UHP) treatment on the physicochemical properties and bioactivities of the soluble dietary fiber (SDF) derived from litchi pomace. Compared to SDF prepared using conventional methods (CSDF), there was minimal difference in monosaccharide composition; however, the molecular weight of SDF obtained through UHP-assisted extraction (PSDF) was lower, resulting in a rougher and looser internal structure. Moreover, PSDF exhibited superior water-holding capacity, swelling capacity, and cation exchange capacity compared to CSDF. These alterations in physicochemical properties contributed to enhanced biological activities of SDF. Specifically, PSDF demonstrated a more pronounced proliferative effect on Lacticaseibacillus rhamnosus and Lactobacillus acidophilus. In addition, PSDF showed greater efficacy in promoting probiotic proliferation and inhibiting the growth of harmful bacteria within the gut microbiota. For example, after 48 h of fermentation, the contents of Bifidobacterium longum, Bacteroides vulgatus, and Bifidobacterium adolescentis in the PSDF group were 1.12, 1.06, and 1.07 times higher than those in the CSDF group, respectively, while the content of Escherichia coli was only 80.94% of that in the CSDF group. This phenomenon was elucidated through the synthesis of short-chain fatty acids (SCFAs), primarily resulting from PSDF's upregulation of key enzyme expressions such as glucose-6-phosphate isomerase, fructose-bisphosphate aldolase, and phosphoglycerate kinase in the SCFAs synthesis pathways. These findings indicated UHP contributed to enhancing biological activities through altering the functional and physicochemical properties.
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