FOOD HYDROCOLLOIDS
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2023
·
IF 10.7
Bing Xu,Shiqing Song,Lingyun Yao,Huatian Wang,Min Sun,Haining Zhuang,Xiaowei Zhang,Qian Liu,Chuang Yu,Tao Feng
Previous studies have shown that Ficus carica polysaccharide (FCPS) extracted from common fig fruit exhibits antioxidant and immune-enhancing properties. Nevertheless, it remains uncertain whether FCPS can modulate the metabolism of gut microbiota. This study aims to assess whether the polysaccharides from two different types of figs can be broken down by the upper digestive system, including saliva, simulated stomach, and small intestinal conditions, and whether the gut microbiota can utilize them (Mw = 4.59 × 10 4 (LFCP, Low molecular weight), Mw = 6.08 × 10 4 (HFCP, High molecular weight)). The results revealed that FCPS retained its molecular weight and reducing sugar content even after passing through the upper digestive system, indicating its safe arrival in the gut without undergoing decomposition. In vitro FCPS fermentation of gut microbiota lowered the pH and produced more gas in the order of LFCPHFCP, respectively, indicating that it can be broken down and utilized by the microbiota. Additionally, the amount of short-chain fatty acids increased notably (LFCP < HFCP), indicating the higher the molecular weight, the stronger the acid production capacity. FCPS demonstrated the ability to significantly decrease the Firmicutes to Bacteroidetes ratio, potentially inhibiting obesity and inflammation. Therefore, FCPS is a promising functional food with potential to enhance health and prevent disease by promoting gut health.
研究领域:
食品科学
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微生物学
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营养学
✓ 已验证
产品关联
DOI
高影响因子
Food & Function
·
2020
·Vol. 11
·期 12
·10386-10396
·
IF 4.171
Huali Wang,Guijie Chen,Xiang Li,Fuping Zheng,Xiaoxiong Zeng
β-Glucan, an economical by-product of yeast, has various health-promoting activities. However, the digestion and fermentation characteristics of β-glucan from yeast are still unknown. Thus, simulated digestion under saliva, gastric and small intestinal solutions and fermentation by gut microbiota were studied in this work. The results showed β-glucan could not be hydrolyzed in saliva, gastric and small intestinal conditions. Then, β-glucan reaches the large intestine, where it is degraded and metabolized by gut microbiota. At the same time, β-glucan could modulate the structure and composition of gut microbiota by inhibiting the proliferation of harmful gut microbiota and promoting the growth of health-promoting gut microbiota. At the phylum level, β-glucan significantly decreased the ratio of Firmicutes to Bacteroidetes. Furthermore, both β-glucan and inulin could selectively promote the growth of Bifidobacterium. Unlike inulin, β-glucan was able to better promote the growth of Bifidobacterium_longum. Thus, β-glucan showed a similar probiotic activity to inulin and is expected to be a potential prebiotic for the modulation of gut microbiota.
研究领域:
营养学
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微生物学
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食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD HYDROCOLLOIDS
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2023
·
IF 10.7
Congli Cui,Mingju Li,Xiaoyang He,Na Ji,Yang Qin,Lei Dai,Liu Xiong,Qingjie Sun
This research prepared functional-resistant starch capsules by constructing multiple calcium alginate shells around calcium alginate/starch beads. Scanning electron microscopy revealed a dense structure for each layer of the calcium alginate shell, tightly encapsulating the calcium alginate/starch beads. The rapidly digestive starch content of three-layer calcium alginate shelled starch capsules decreased to 0.50 ± 1.14%, while the resistant starch content increased to 78.25 ± 1.55%. The estimated glycemic index (eGI) experiment suggested that the two-layer shell capsules (eGI: 59.91) and Three-layer shell capsules (eGI: 47.75) were classified as low-glycemic index foods . Furthermore, calcium alginate/corn starch multilayer capsules showed reduced microbial gas production and increased concentrations of propionic acid , isobutyric acid, and valeric acid compared to lactulose in vitro fecal fermentation experiment. Moreover, three-layer capsules and beads promoted a relative abundance of Bacteroidetes but inhibited the reproduction of Proteobacteria and Actinobacteria compared with lactulose and corn starch. These results suggest that constructing multi-layered sodium alginate shells for starch beads can effectively increase the digestive resistance of starch within the capsules and control its fermentation in the colon. This study will have a profound impact on the development of RS1-type resistant starch and be beneficial in the design and production of functional foods for prevention and assistance in the treatment of chronic diseases such as diabetes and obesity.
研究领域:
食品科学
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营养学
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微生物学
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生物技术
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2023
·
IF 8.2
Qingying Luo,Xuejiao Li,Hongyu Li,Keyang Kong,Cheng Li,Zhengfeng Fang,Bin Hu,Caixia Wang,Saiyan Chen,Wenjuan Wu,Xiaolin Li,Yuntao Liu,Zhen Zeng
Boletus auripes is edible and medicinal boletus mushrooms rich in diverse nutrients and bioactive compounds, of which indigestible dietary polysaccharides are the most abundant compounds involved the regulation of gut microbes. However, the physicochemical, digestive, and fermentation characteristics of Boletus auripes polysaccharide (BAP) are not well studied. This study aimed to investigate the influence of different digestive stages on BAP's physicochemical characteristics and biological activities, and its effect on intestinal flora. We found that mannose (0.23 %), glucose (0.31 %), galactose (0.17 %), and fucose (0.19 %) were the main monosaccharides of BAP, with a high-molecular-weight (Mw) and a low-Mw fraction of 2084.83 and 62.93 kDa, respectively. During the course of digestion, there were slight alterations in the chemical composition, monosaccharide composition, and Mw of BAP. Despite these changes, the fundamental structural features of BAP remained largely unaffected. Moreover, the antioxidant and hypoglycemic activities of BAP were weakened under simulated saliva-gastrointestinal digestion. However, gut microbiota decomposed and utilized BAP to generate various short-chain fatty acids during fermentation, which decreased the pH of fecal cultures. Meanwhile, BAP modulated the gut microbiota composition and increased the relative abundance of Bacteroidetes . These findings suggest that BAP have potential for maintaining intestinal health and protecting against interrelated diseases.
研究领域:
食品科学
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微生物学
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营养学
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生物化学
✓ 已验证
DOI
PubMed
高影响因子
Food & Function
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2016
·Vol. 7
·期 11
·4637-4643
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IF 2.686
Chun Chen,Qiang Huang,Xiong Fu,Rui Hai Liu
This study investigated the in vitro fermentation of polysaccharides from Morus alba L., the contribution of its carbohydrates to the fermentation, and the effect on the composition of gut microbiota. Over 48 h of fermentation, the pH value in the fecal culture decreased from 7.12 to 6.14, and the total short chain fatty acids (SCFA) and acetic, propionic, and butyric acids all significantly increased. After 48 h of fermentation, 45.36 ± 1.36% of the total carbohydrates in the polysaccharide, including 35.72 ± 1.51% of arabinose, 23.1 ± 1.19% of galactose, 41.43 ± 1.52% of glucose, 26.36 ± 1.93% of rhamnose and 65.57 ± 1.07% of galacturic acid, were consumed. The increase in acetic and butyric acids was primarily due to the fermentation of galactose and galacturonic acid in the polysaccharide, while the increase in propionic acid resulted mainly from the fermentation of arabinose and glucose. In addition, the polysaccharide could modulate the gut microbiota composition by increasing the Bacteroidetes population and decreasing the Firmicutes population. The results may facilitate the development of food products known as prebiotics, aimed at improving gastrointestinal health.
研究领域:
微生物学
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营养学
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食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Food & Function
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2024
·
IF 5.1
Xuening Yu,Guang Li,Shuling Zhou,Xiaoyang Liu,Fawen Yin,Deyang Li,Dayong Zhou
Zinc is essential for maintaining the integrity and repair of small intestinal epithelial cells while zinc deficiency could induce the inflammatory infiltration and imbalance of intestinal flora in the intestine. In this study, glycosylation between oyster protein hydrolysate (OPH) and chitosan oligosaccharide (COS) was conducted and used as the carrier of zinc ions (OCZn). The results of zeta potential and particle size distribution showed that the OPH-COS successfully bound to zinc ions to form OCZn with a surface zinc content of 0.56% (scanning electron microscopy). In addition, OCZn was found to exhibit good intestinal digestion by in vitro simulated digestion microscopy, while TSQ fluorescence staining revealed the presence of free zinc ions released from OCZn in the intestinal cells. In the zinc deficiency-induced mouse model, a moderate dose of OCZn (zinc: 6.96 mg kg−1) showed significant restorative effects on colonic inflammation (IL-1β: 28.20 pg per mg·protein, IL-6: 27.73 pg per mg·protein), protein expressions of HO-1 and ZO-1, oxidative stress (the liver and kidneys), and imbalance of the gut microbiota, increasing microbial diversity and abundance (ratio of Firmicutes/Bacteroides). Zinc deficiency triggered the abundance of Proteobacteria (risk of diseases), while the dominant bacteria were mainly restored to Bacteroides, Parabacteroides, Alistipes, Alloprevotella, and Muribaculaceae following the administration of OCZn. This study provided a theoretical basis for improving the inflammatory infiltration of the colon and the imbalance of intestinal flora caused by zinc deficiency.
研究领域:
营养学
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微生物学
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免疫学
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胃肠病学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD RESEARCH INTERNATIONAL
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2021
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IF 6.475
Chuang Zhu,Qi Guan,Chenwei Song,Lingyue Zhong,Xinwen Ding,Hui Zeng,Pan Nie,Lihua Song
Gut microbiota dysbiosis and oxidative stress may play important roles in the progression of nonalcoholic fatty liver disease (NAFLD). Fermented foods contain probiotics and other bioactive components that may improve gastrointestinal health and provide other health benefits. Here, we investigated the effect of Lactobacillus -fermented black barley on NAFLD rats. Adult Sprague Dawley rats were randomized into four groups: normal chow diet (NC), high-fat diet (HF), HF + fermented black barley treatment (HB) and HF + Lactobacillus treatment (HL). The rats in the HB and HL groups were continuously administered fermented black barley or Lactobacillus , respectively, for 12 weeks (1 mL/100 g·BW, containing 1 × 10 8 CFU/mL Lactobacillus ). Compared with the HF treatment, HB treatment effectively inhibited the increase in body weight, liver and abdominal fat indexes and hepatic lipids ( p < 0.01), increased hepatic SOD activity ( p < 0.05), decreased thiobarbituric acid reactive substances (TBARSs) ( p < 0.01) and improved liver function. Moreover, Lactobacillus -fermented black barley exhibited regulatory effect on high-fat diet-induced intestinal microbiota dysbiosis by increasing the relative microbiota abundance and diversity, increasing the relative abundance of Bacteroidetes , decreasing the Firmicutes/Bacteroidetes ratio, increasing the abundances of some intestinal probiotics (such as Akkermansia and Lactococcus ), and influencing some of the fecal metabolites related to hormones and lipid metabolism. The supplementation of fermented cereal food might be a new effective and safe preventive dietary strategy against NAFLD.
研究领域:
胃肠病学
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营养学
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微生物学
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肝病学
✓ 已验证
DOI
PubMed
高影响因子
Journal of Functional Foods
·
2024
·
IF 3.8
Zhenhua Yin,Juanjuan Zhang,Qingfeng Guo,Jiale Zhi,Xia Zhang,Wei Zhang,Lin Chen
Psoralea corylifolia polysaccharide (PPs) was the bioactive ingredient that conferred health benefits. In this study, simulated digestion and anaerobic fermentation models were employed to explore the digestion and fermentation characteristics of PPs and its effect on the intestinal microbiota. The results revealed that while the total and reducing sugar contents of PPs increased after simulated digestion, their molecular weight, monosaccharide composition, and overall structure remained unchanged, indicating that PPs was not degraded during digestion. On the other hand, during anaerobic fermentation, PPs was metabolized by intestinal microbiota, leading to the production of acetic acid and propionic acid, which subsequently reduced the pH of the fecal culture solution. Additionally, PPs modulated the composition of the intestinal flora, significantly decreasing the relative abundance of Proteobacteria while increasing the relative abundance of Bacteroidota and Firmicutes to varying degrees. This study highlighted the potential of PPs for development as functional foods and therapeutic agents.
研究领域:
食品科学
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微生物学
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营养学
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2024
·Vol. 29
·期 12
·2791
·
IF 4.2
Haijun Xu,Zhu Liu,Wen Xu,Yafei Zhang
The extract ofDendrobium huoshanense, a traditional Chinese medicinal and food homologous plant belonging to the family Orchidaceae, was previously reported to have hypoglycemic and antioxidant effects. In this study, the direct effects of polysaccharide (DHP) and non-polysaccharide (NDHP) components ofD. huoshanense, as well as its water extract (DHWE) were compared with that of metformin (an antidiabetic drug) on the gut microbiota (collected from fecal flora) of rats with streptozotocin-induced type 1 diabetes (T1D) using an in vitro fermentation method. The results showed that DHWE, DHP, and NDHP reduced pH and increased bacterial proliferation and short-chain fatty acid (SCFA) content in fermentation broth. DHWE, DHP, NDHP and metformin promoted the production of acetic and propionic acid, acetic acid, propionic acid and butyric acid, and propionic acid, respectively. DHWE, DHP, and NDHP reduced the abundance ofProteobacteria(subdominant pathogenic bacteria) and increased the abundance ofFirmicutes(dominant beneficial gut bacteria). NDHP also reduced the abundance ofBacteroidetes(beneficial and conditional pathogenic). Metformin increased the abundance ofProteobacteriaand reduced the abundance ofFirmicutesandBacteroidetes. At the genus level, NDHP promoted the proliferation ofMegamonasandMegasphaeraand decreased harmful bacteria (e.g.,Klebsiella), and DHP increased the abundance ofPrevotellaceae(opportunistic and usually harmless). By contrast, metformin increased the abundance of harmful bacteria (e.g.,Citrobacter) and reduced the abundance of beneficial bacteria (e.g.,Oscillospira). Our study indicates that DHWE, DHP, and NDHP are potentially more beneficial than metformin on the gut microbiota of T1D rats in vitro.
研究领域:
药理学
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微生物学
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糖尿病研究
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中药学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD RESEARCH INTERNATIONAL
·
2019
·
IF 3.579
Ruiqiu Zhao,Ninghui Cheng,Paul A. Nakata,Liyan Zhao,Qiuhui Hu
The objective was to determine the contribution of A. auricular polysaccharides (AAP) in modulating the composition and diversity of the intestinal microbe in mice. AAP was extracted from A. auricula freeze-dried powder and different amounts of AAP (40, 80, 160 mg AAP/kg body weight) were administered to 6 week-old male ICR mice by gavage feeding over a five-week period. AAP feeding changed the intestinal environment in the mice. The pH value of the intestinal compartments decreased while SCFAs concentrations increased in AAP-fed groups, in a dose dependent manner, compared to the controls ( P < .05). High throughput sequencing revealed an enrichment in the diversity and an alteration in the composition of the fecal microbiota in the AAP fed mice with a significant decrease in the Firmicutes/Bacteroidetes ratio ( P < .05). The relative abundances of Porphyromonadaceae and Bacteroidaceae also increased in the AAP fed mice which positively correlated with an increase in serum IgA and IgG concentrations ( P < .05). The findings from this study show that AAP modulates the mouse gut microbiota and may contribute, at least in part, to some of the reported beneficial effects from the consumption of the mushroom, A. auricula .
研究领域:
微生物学
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营养学
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免疫学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Biomedical Journal
·
2023
·
IF 5.5
Shi-Le Wang,Man-Man Zhang,Han Zhou,Guo-Qiang Su,Yi Ding,Guang-Hui Xu,Xu Wang,Cheng-Fu Li,Wei-Feng Huang,Li-Tao Yi
Background Inflammatory bowel disease (IBD) is a chronic, life-threatening inflammatory disease of gastrointestinal tissue characterized by inflammation of the gut. Recent studies have shown that gut microbiota is involved in the pathophysiology of IBD. However, it is unknown whether direct inhibition of NLR family pyrin domain containing 3 (NLRP3) inflammasome regulates IBD and alters gut microbiota. Methods Here, the NLRP3 expression was evaluated in the colon of IBD subjects. Then, we investigated the effects of NLRP3 inhibition by MCC950 on the gut microbiota and IBD-like symptoms induced by dextran sulfate sodium (DSS). Results Firstly, NLRP3 and IL-1β levels were increased in patients with IBD as compared with healthy individuals. Then, the animal experiment showed that NLRP3 inhibition by MCC950 significantly attenuated IBD-like symptoms such as diarrhea and colonic inflammation in DSS-induced mice. In addition, NLRP3 inhibition inhibited NLRP3/ASC/caspase-1/IL-1β signaling pathway in the colon, which was over-activated by DSS. Furthermore, MCC950 increased the abundance of phylum Firmicutes, decreased the abundance of phylum Bacteroidetes, and increased the Firmicutes/Bacteroidetes ratio, indicating that the inhibition of NLRP3 inflammasome could regulate the abundance of intestinal flora. According to correlation analysis, NLRP3 might produce its functional role in the regulation of oxidation indicators by changing the gut microbiota composition, especially the phylum Bacteroidota, genus Lactobacillus and species Lactobacillus reuteri . Conclusions This study suggests that NLRP3 inflammasome inhibition attenuates IBD-like symptoms by regulating gut microbiota, and provides a basis for the clinical application of NLRP3 as a target for the treatment of IBD.
研究领域:
免疫学
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胃肠病学
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微生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Soil Ecology Letters
·
2024
·Vol. 6
·期 3
·1-11
·
IF 4.5
Liao Hongkai,Zheng Chunli,Li Juan,Long Jian,Li Yaying
Phyla Proteobacteria and Bacteroidetes dominated in the rhizosphere of tomatoes under RSD amendment.
Stochastic processes dominated in bacterial community assembly for biochar and CF amendments.
It is important to monitor and manage soil conditions before planting after RSD amendment.
Reductive soil disinfestation (RSD) is an important tool for sustainable agricultural productivity. However, the differences in soil bacterial communities and their community assembly processes among RSD and other treatment strategies (e.g., biochar and chemical fumigation) are still subject to open questions. In this study, soils subjected to various treatments–untreated control (CK), chemical soil fumigation with CaCN 2 (CF), 1% biochar (1%B), 3% biochar (3%B), and reductive soil disinfestation (RSD) are investigated. Soil samples were collected, incubated, and then used for growth of tomato plants. The Sloan neutral community model indicates that stochastic processes dominate in bacterial community assembly for both biochar and CF amendments. In contrast, this work shows that RSD treatment can have a strong impact on soil bacterial community composition. The relative abundance of Firmicutes increased during unplanted soil incubation, whereas Proteobacteria and Bacteroidetes dominated in the rhizosphere after planting of tomatoes. Normalized stochasticity ratio reveals that deterministic selection played an important role in the bacterial assembly under RSD amendment. We found that RSD amendment yielded lower biomass than that for other treatments after 28 days of tomato growth. Our results suggest that although RSD treatment has great potential to rebuild soil bacterial ecology by shaping bacterial communities and their assembly processes, it is important to monitor and manage soil conditions (e.g., soil nutrients or physical properties) before planting to ensure plant productivity.
研究领域:
土壤微生物学
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植物-微生物互作
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农业可持续性
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微生物生态学
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土壤科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）