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Characterization of Polysaccharides from Feijoa Fruits (Acca sellowiana Berg.) and Their Utilization as Growth Substrates by Gut Commensal Bacteroides Species
Journal of Agricultural and Food Chemistry ( IF 5.7 ) Pub Date : 2018-12-05 00:00:00 , DOI: 10.1021/acs.jafc.8b05080 Tracey J. Bell 1 , Sarah L. Draper 1 , Manuela Centanni , Susan M. Carnachan 1 , Gerald W. Tannock 2 , Ian M. Sims 1
Journal of Agricultural and Food Chemistry ( IF 5.7 ) Pub Date : 2018-12-05 00:00:00 , DOI: 10.1021/acs.jafc.8b05080 Tracey J. Bell 1 , Sarah L. Draper 1 , Manuela Centanni , Susan M. Carnachan 1 , Gerald W. Tannock 2 , Ian M. Sims 1
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Polysaccharides from feijoa fruit were extracted and analyzed; the composition of these polysaccharides conforms to those typically found in the primary cell walls of eudicotyledons. The two major polysaccharide extracts consisted of mainly pectic polysaccharides and hemicellulosic polysaccharides [xyloglucan (77%) and arabinoxylan (16%)]. A collection of commensal Bacteroides species was screened for growth in culture using these polysaccharide preparations and placed into five categories based on their preference for each substrate. Most of the species tested could utilize the pectic polysaccharides, but growth on the hemicellulose was more limited. Constituent sugar and glycosyl linkage analysis showed that species that grew on the hemicellulose fraction showed differences in their preference for the two polysaccharides in this preparation. Our data demonstrate that the members of the genus Bacteroides show differential hydrolysis of pectic polysaccharides, xyloglucan, and arabinoxylan, which might influence the structure and metabolic activities of the microbiota in the human gut.
中文翻译：
从费约果果实多糖的表征（阿卡sellowiana伯格）及其利用的土壤基质由肠道共生杆菌物种
从飞jo果实中提取多糖并进行分析；这些多糖的组成符合在双子叶植物原代细胞壁中通常发现的那些多糖。两种主要的多糖提取物主要由果胶多糖和半纤维素多糖组成[木葡聚糖（77％）和阿拉伯木聚糖（16％）]。常见的拟杆菌属的集合使用这些多糖制剂筛选出的小球藻在培养物中的生长，并根据它们对每种底物的偏好将其分为五类。测试的大多数物种都可以利用果胶多糖，但在半纤维素上的生长受到更大的限制。组成糖和糖基键合分析表明，在半纤维素级分上生长的物种在该制剂中显示出对两种多糖的偏好差异。我们的数据表明，拟杆菌属的成员显示果胶，木葡聚糖和阿拉伯木聚糖的水解不同，这可能会影响人体肠道菌群的结构和代谢活性。
更新日期：2018-12-05
中文翻译：
从费约果果实多糖的表征（阿卡sellowiana伯格）及其利用的土壤基质由肠道共生杆菌物种
从飞jo果实中提取多糖并进行分析；这些多糖的组成符合在双子叶植物原代细胞壁中通常发现的那些多糖。两种主要的多糖提取物主要由果胶多糖和半纤维素多糖组成[木葡聚糖（77％）和阿拉伯木聚糖（16％）]。常见的拟杆菌属的集合使用这些多糖制剂筛选出的小球藻在培养物中的生长，并根据它们对每种底物的偏好将其分为五类。测试的大多数物种都可以利用果胶多糖，但在半纤维素上的生长受到更大的限制。组成糖和糖基键合分析表明，在半纤维素级分上生长的物种在该制剂中显示出对两种多糖的偏好差异。我们的数据表明，拟杆菌属的成员显示果胶，木葡聚糖和阿拉伯木聚糖的水解不同，这可能会影响人体肠道菌群的结构和代谢活性。
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